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GB/T 9061-1988 General technical requirements for metal cutting machine tools

Basic Information

Standard ID: GB/T 9061-1988

Standard Name: General technical requirements for metal cutting machine tools

Chinese Name: 金属切削机床通用技术条件

Standard category:National Standard (GB)

state:Abolished

Date of Release1988-04-18

Date of Implementation:1989-01-01

Date of Expiration:2006-08-01

standard classification number

Standard ICS number:Mechanical Manufacturing>>25.080 Machine Tools

Standard Classification Number:Machinery>>Metal Cutting Machine Tools>>J50 Machine Tools General

associated standards

alternative situation:Replaced by GB/T 9061-2006

Publication information

other information

Review date:2004-10-14

Drafting unit:Beijing Machine Tool Research Institute

Focal point unit:National Technical Committee for Metal Cutting Machine Tools Standardization

Publishing department:China Machinery Industry Federation

competent authority:China Machinery Industry Federation

Introduction to standards:

GB/T 9061-1988 General technical requirements for metal cutting machine tools GB/T9061-1988 standard download decompression password: www.bzxz.net

Some standard content:

National Standard of the People's Republic of China
General specifications for
metal-cutting machine tools
1 Subject content and scope of application
UDC 621. 91
GB 9061-88
This standard specifies the basic requirements for the design, manufacture and acceptance of metal-cutting machine tools (hereinafter referred to as machine tools, including machine tool accessories). This standard applies to machine tools. All types of machine tools should compile corresponding technical conditions based on the original test of this standard. 2. Reference standards
Metal cutting machine operating instructions symbol GB 3167
GB 3168
GB 4215
GB5226
GB 6477
GB6576
Metal cutting machine operating instructions symbol General technical conditions for the determination of sound power level of noise of metal cutting machines
Machine tool electrical equipment
Metal cutting machine tool terminology
Machine tool lubrication system
73 J50 004
ZBJ50005
ZBJ50006
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
JB8 product label
JB1838
JB2326
JB2524
JB2554
JB2693
JB2855
JB3207
JB4139
JB4168
Determination of noise sound pressure level| |tt||Determination of dust concentration
Compilation of random technical documents
Method for compiling metal cutting machine tool models
Method for compiling machine tool accessories models
Technical conditions for machine tool packaging
Technical conditions for machine tools and rust prevention
General technical conditions
Hydraulic system of metal cutting machine tools
Technical conditions for machine tool painting
General technical conditions for packaging of machine tool accessoriesTechnical conditions for safety protection of metal cutting machine tools and machine tool accessoriesMethod for compiling combined machine tool models
JB/Z189
JB/Z 276
Compilation of technical documents accompanying machine tool accessories
Precision classification of metal cutting machine tools
Parameter standards of various types of machine tools
Precision standards of various types of machine tools
3 Basic requirements
Model, name and parameters
Approved by the State Machinery Industry Commission on March 17, 198817]
Implementation on January 1, 1989
GB 9061—88
The model and name of machine tools shall comply with the provisions of GB6477, JB1838, JB4168 and JB2326: The parameters of machine tools shall comply with the provisions of relevant machine tool parameter standards. The type and size of the connection parts between machine tools and workholding tools and accessories shall comply with the provisions of relevant standards. 3.2 Layout and shape
3.2.1 The shape of machine tools shall be beautiful, symmetrical, harmonious and pleasant. Exposed accessories and accessories should be coordinated with the machine tool. 3.2.2 The various components and devices of the machine tool should be reasonably arranged, of moderate height, and convenient for the operator to view the processing area. 3.2.3 The handwheels, handles and buttons of the machine tool should be reasonably arranged, easy to operate, and comply with relevant regulations. 3.2.4 The chip removal should be convenient when the machine tool is working. For machine tools that produce a large amount of chips, a chip removal device should be installed. 3.2.5 Machine tools transported as a whole or in parts should meet the requirements of transportation and loading. 3.2.6 The machine tool should be easy to assemble, disassemble, adjust and repair. 3.3 Performance, structure
The machine tool should meet the requirements of the user. Generally, it should have the performance and structure specified in the relevant technical documents. The accuracy and working performance of the machine tool should comply with the provisions of relevant standards and technical documents. The design of the machine tool should improve the level of serialization, generalization and standardization, and the various structures and devices of the machine tool should be stable and reliable.
3.4 ​​Accessories and tools
The machine tool should be equipped with accessories and tools to ensure basic performance. The accessories for installation and adjustment and the special tools for disassembly and assembly should be complete and supplied randomly. Special accessories that expand the performance of the machine tool should be supplied according to the user's requirements and agreement. Accessories and tools should generally be marked with the machine's mark or specifications.
The accessories and tools of the machine tool should ensure the interchangeability and performance of the connection parts. 3.5 Electrical system
The electrical system of the machine tool should comply with the provisions of relevant standards such as GB5226. 3.6 Hydraulic, pneumatic, cooling and lubrication systems 3.6.1 The hydraulic system of the machine tool should comply with the provisions of relevant standards such as JB2693. 3.6.2 The pneumatic system of the machine tool should comply with the provisions of relevant standards. 3.6.3 The lubrication system of the machine tool should comply with the provisions of relevant standards such as GB6576. Generally, there should be a device for observing the oil supply and an oil mark indicating the oil level, and the lubrication system should be able to ensure good lubrication. 3.6.4 The cooling system of the machine tool should be able to ensure sufficient and reliable cooling. 3.6.5 The hydraulic, pneumatic, cooling and lubrication systems and other parts of the machine tool shall not leak oil, water or air. Coolant shall not be mixed into the hydraulic system and lubrication system.
3.7 Measuring device
The measuring device of the machine tool and its accessories should be stable, reliable, easy to observe and operate, with a clear field of view, and reliable sealing devices should be installed where sealing is required.
3.8 Safety and Health
3.8.1 For parts of the machine tool that may cause damage to personnel or equipment, corresponding safety facilities or safety protection devices must be adopted and shall comply with the provisions of relevant standards such as JB4139. 3.8.2 There should be no abnormal sharp and impact sounds when the machine tool is in motion. Under idling conditions, for machine tools with accuracy levels of II and above, the noise sound pressure level shall not exceed 75dB (A); for machine tools with other accuracy levels, the noise sound pressure level shall not exceed 85dB (A). The determination method of the sound pressure level of machine tool noise shall be carried out in accordance with the provisions of ZBJ50004. Note: *The accuracy level of machine tools shall be divided according to JB/7.276. 3.8.3 For machine tools that often produce productive dust, the dust concentration shall not exceed 10mg/m3. The determination method of dust concentration shall be carried out in accordance with the provisions of 2BJ50005.
3.8.4 For machine tools that produce harmful gases or a large amount of oil mist during operation, effective exhaust or mist absorption measures shall be taken. 3.8.5 Within the range of travel, the operating force of the handwheel and handle shall not exceed the provisions of Table 1. The operating force of the handwheel and handle shall be balanced. 173
Frequency of use
Weight of machine tool, t
Frequent use
Infrequent use
Operating force, N
GB 9061—88
>2~5
Note: () The operating force of handwheels and handles used more than 25 times per shift shall be assessed according to the requirements of "frequently used" handwheels and handles. ② For handwheels and handles used for special requirements such as clamping, locking, tightening and increasing damping, the operating force shall be in accordance with the design requirements. @ For handwheels and handles used for adjustment or maintenance of large machine tools that are rarely used, the operating force shall be in accordance with the design requirements, but the maximum shall not exceed 200N. ?) For handwheels and handles of modified machine tools, the operating force shall be in accordance with the requirements of the basic model. 120
3.8.6 For machine tools using "static pressure" devices, it shall be ensured that the static pressure can be started only after it is established, and safety shall be ensured when the pressure changes exceed the regulations or the power is cut off.
3.9 Life
3.9.1 Under the condition of two-shift operation and compliance with the use rules, the time for the machine tool to maintain its accuracy within the range specified by the machine tool accuracy standard and the time for the machine tool to be repaired for the first time should not be less than the provisions of the relevant technical documents. 3.9.2 Wear-resistant measures should be taken for the important and easily worn guide rails of the machine tool and meet the requirements of relevant standards. Measures should also be taken for the main parts such as the machine tool spindle, lead screw, worm gear pair and high-speed and heavy-load gears to increase their life. 3.9.3 Protective devices should be installed for the machine tool guide rails, lead screws and other parts that are easily worn by chips. Protective devices should be installed for the machine tool shaft, lead screws and other parts that are easily worn by dust. 3.10 Nameplates and signs
The machine tool should have nameplates and signs indicating lubrication, operation, safety, etc. The content of the nameplate and signboard should be correct, and the marking should comply with the provisions of relevant standards and technical documents such as GB3167, GB3168. The signboard should comply with the provisions of JB8. Clear Chinese factory names and trademarks can be inlaid or cast on the machine tool.
3.11 Random technical documents
The random technical documents of the machine tool include the instruction manual, certificate of conformity and packing list. The compilation method should comply with the provisions of ZBJ50006 and JB/Z189.
4 Processing and assembly quality
4.1 The grades and mechanical properties of various parts materials on machine tools shall comply with the provisions of relevant standards. The processing of parts shall comply with the provisions of standards, drawings and process documents.
4.2 The quality of castings shall comply with the provisions of relevant standards. 4.3 The quality of heat-treated parts shall comply with the provisions of relevant standards. 4.4 The quality of welded parts shall comply with the provisions of relevant standards. 4.5 The planes of cold-worked parts shall be flat and not warped, and the edges shall be straight. 4.6 The quality of machined parts shall comply with the provisions of relevant standards. 4.7 The quality of machine tool assembly shall comply with the provisions of relevant standards. 5 Appearance quality
5.1 The appearance surface of the machine tool shall not have protrusions, depressions, roughness and other damage not specified in the drawings. 5.2 The protective cover of the machine tool shall be flat and symmetrical, and shall not be warped or depressed. 5.3 The edges of the exposed joint surfaces of machine tool parts and components shall be neat and symmetrical, and there shall be no obvious misalignment. The amount of misalignment and unevenness shall not exceed the provisions of Table 2.
The door and cover of the machine tool should fit the joint surface of the machine tool, and the gap value should not exceed the provisions of Table 2. The gap between the door and cover of the electrical cabinet, electrical box, etc. of the machine tool and its related parts should be uniform, and the gap unevenness value should not exceed the provisions of Table 2. 176
Joint surface edge and door and cover side length size
Misalignment
Misalignment unevenness
Joint gap value
Gap unevenness value
GB 9061 ---88
>500~1 250
>1 250~3 150
Note: When the length and width of the joint surface edge and the door and cover side length are inconsistent, the allowable value can be determined according to the long side size. 5.4 Exposed welds should be trimmed straight and uniform. mm
5.5 The screws inserted into the countersunk holes should not protrude from the surface of the parts, and there should be no obvious eccentricity between their heads and the countersunk holes. The fixing pins should generally protrude slightly from the outer surface of the parts. The tail end of the bolt should protrude slightly from the end face of the nut. The exposed shaft end should protrude from the end face of the containing part, and the protrusion value is approximately the chamfer value. The wall thickness between the inner hole surface and the shell flange should be uniform and symmetrical, and the difference in flange wall thickness should not be greater than 25% of the actual maximum wall thickness. 5.6 The surface of the exposed parts of the machine tool should not be bumped or rusted. The ends of screws, nails, and pins should not have defects such as twisting and hammering. 5.7 The rims of metal handwheels and control handles should have an anti-rust layer. 5.8 The color tones of plated parts, blued parts, and blackened parts should be consistent, and the protective layer should not fade or fall off. 5.9 The exposed parts of electrical, hydraulic, lubricating, and cooling pipelines should be tightly painted and arranged neatly. If necessary, they should be fixed with pipe disasters. The pipes should not be twisted or folded.
5.10 The unprocessed surface of machine tool parts should be painted. The painting should comply with the provisions of relevant standards and technical documents such as JB2855. The joints of the detachable assembly joint surface should be cut after painting, and the edges should not be torn when cutting. Various signs on the machine tool should be clear and durable. The nameplate should be fixed in a conspicuous position. The fixing position of the sign should be correct, flat and firm, and not tilted.
6 Acceptance inspection
6.1 Overview
6.1.1 Each machine tool should be inspected and qualified by the manufacturer before it can be shipped. In special cases, with the consent of the user, the acceptance inspection can also be carried out at the user's factory.
6.1.2 The acceptance inspection of machine tools is divided into type inspection and factory inspection of normal production products. 6.1.2.1 Type inspection is to comprehensively evaluate the quality of the machine tool, whether the design and manufacture of the machine tool can meet the requirements of the user, whether it complies with the provisions of relevant standards and technical documents, and to evaluate the technical level of the machine tool. Type inspection shall be carried out in any of the following situations: when new products are trial-produced and finalized;
h. When the structure and performance of the machine tool have changed significantly. 6.1.2.2 The factory inspection of products produced normally is to assess whether the machine tool manufacturing complies with the provisions of relevant standards and technical documents, and to check whether the quality of the machine tool is stable.
6.1.3 The acceptance inspection contents of the machine tool are as follows: a.
Appearance quality;
Inspection of accessories and tools;
Inspection of parameters;
Idle running test of the machine tool;
Load test of the machine tool;
Precision test of the machine tool;
Working test of the machine tool;
h. Life test of the machine tool;
i. Others.
6.2 General requirements
GB 9061--88
6.2.1 During the acceptance inspection of machine tools, attention should be paid to prevent interference from airflow, light and heat radiation. Machine tools should be prevented from being affected by changes in ambient temperature. Machine tools with constant temperature requirements should be inspected under the specified constant temperature conditions, and the inspection fixture should be isothermal before use.
6.2.2 Before the acceptance inspection, the machine tool should be installed and adjusted. Generally, it should be leveled naturally so that the machine tool is in a horizontal position. 6.2.3 During the acceptance inspection, the mechanisms and parts that affect the performance and accuracy of the machine tool should not be adjusted. Otherwise, the items affected by the adjustment should be re-inspected.
6.2.4 During the acceptance inspection, the whole machine should be inspected and the machine tool should not be disassembled. However, parts, components and accessories that have no effect on the operating performance and accuracy are excluded.
6.2.5 When the machine tool is limited by the structure or does not have the specified test tools, a method with an effect equivalent to that specified in the standard can be used instead. 6.3 Appearance inspection
6.3.1 Layout and shape (only for type inspection) Evaluate the layout and shape of the machine tool in accordance with the provisions of Article 3.2. 6.3.2 Appearance quality
Inspect whether the appearance quality of each part of the machine tool meets the provisions of Chapter 5. 6.4 Inspection of accessories and tools
Inspect whether the random accessories and tools meet the provisions of Article 3.4. 6.5 Parameter inspection (spot check)
Inspect whether the parameters and connection part dimensions of the machine tool meet the requirements of the corresponding machine tool parameter standards, connection size standards and design documents. 6.6 Idle running test of the machine tool
Idle running test is to run the machine tool under no-load state to inspect the operating state, temperature change, power consumption, carbon activity, stability, reliability and safety of the operating mechanism. During the test, the main motion mechanism of the machine tool should be operated in sequence from the lowest speed, and the operation time of each speed level shall not be less than 2 minutes. Machine tools with interchangeable gears, belt drive speed change and stepless speed change can be operated at low, medium and high speeds. At the highest speed, the machine should be operated for a sufficient time (not less than 1 hour) to allow the spindle bearing (or ram) to reach a stable temperature. The feed mechanism should be tested for idling with the feed amount (or feed speed) changed in sequence. For products in normal production, only low, medium and high feed amounts (or feed speeds) can be tested during inspection. For mechanisms with rapid movement, rapid movement tests should be conducted. 6.6.1 Temperature rise test
When the spindle bearing reaches a stable temperature, the temperature and temperature rise of the spindle bearing shall be inspected. The values ​​shall not exceed the requirements of Table 3. Table 3
Bearing type
Sliding bearing
Rolling bearing
The temperature test of the hydraulic system shall comply with the requirements of JB2693 Note: After a certain period of operation, if the temperature rise of the machine tool does not exceed 5°C per hour, it can generally be considered to have reached a stable temperature. C
6.6.2 Inspection of main motion and feed motion (spot check) Check the correctness of the main motion speed and feed speed (feed amount), and check the rapid moving speed (or time). At all speeds, the machine tool working mechanism should be stable and reliable.
6.6.3 Action test
The action test of machine tools includes the following contents:
GB9061-88
Use an appropriate speed to check whether the start and stop (including braking, reversal and inching, etc.) of the main motion and feed motion are flexible and reliable.a.
Flexible and reliable;
Check whether the adjustment and action of the automatic mechanism (including automatic circulation mechanism) are flexible and reliable;c.
Repeatedly change the speed of the main motion and feed motion to check whether the speed change mechanism is flexible and reliable and the accuracy of the indication; check whether the movement of the indexing, positioning and indexing mechanism is flexible and reliable; check whether the adjustment mechanism, clamping mechanism, reading indicating device and other auxiliary devices are flexible and reliable; check whether the loading and unloading of workpieces, tools, measuring tools and accessories are flexible and reliable; the random accessories connected to the machine tool should be tested on the machine tool to check whether their mutual relationship meets the design requirements; check whether other operating mechanisms are flexible and reliable, and check the reverse idle travel of the handwheel with a scale device and the operating force of the handwheel and handle. The idle travel shall comply with the provisions of the relevant standards, and the operating force shall comply with the requirements of Article 3.8.5.
Note: In addition to the above inspections, CNC machine tools shall also be tested for action in accordance with relevant standards and technical documents. 6.6.4 Inspection of safety protection devices and insurance devices In accordance with the provisions of JB4139 and other standards, inspect whether the safety protection devices and insurance devices are complete and reliable. 6.6.5 Noise inspection
6.6.5.1 Determination of sound pressure level
Measure the sound pressure level of machine tool noise in accordance with the method specified in ZBJ50004. The measurement result shall not exceed the provisions of Article 3.8.2. 6.6.5.2 Determination of sound power level (the instrument is carried out during type inspection)Measure the sound power level of machine tool noise in accordance with the method specified in GB4215. 6.6.6 Idle power test (spot check)
After the main motion mechanism of the machine tool idles at various speeds until the power is stable, check the idle power of the main transmission system. For machine tools with feed motion and main motion separated, the idle power of the feed system shall also be checked when necessary. 6.6.7 Inspection of electrical system
Inspect the working condition of the electrical system of the machine tool, which shall comply with the provisions of GB5226. 6.6.8 Inspection of hydraulic, pneumatic, cooling and lubrication systemsInspect the working condition of the hydraulic, pneumatic, cooling and lubrication systems, which shall comply with the provisions of Article 3.6. 6.6.9 Inspection of measuring device
The working condition of the measuring device shall be inspected in accordance with the provisions of Article 3.7. 6.6.10 Continuous idle operation test of the whole machine
For automatic, semi-automatic and CNC machine tools, a continuous idle operation test shall be carried out, and no failure shall occur during the entire operation process. The continuous operation time shall comply with the provisions of Table 4. During the test, the automatic cycle shall include all functions and the entire working range, and the rest time between each automatic cycle shall not exceed 1 min.
Machine tool automatic control type
Time, h
6.7 Load test of machine tool
Mechanical control
Electro-hydraulic control
Digital control
General CNC machine tool
Machining center
GB 9061—88
Load test is to test the working performance and reliability of the machine tool when it is running under load, that is, the processing capacity, load-bearing capacity and its operating state (referring to the change of speed, vibration, noise, lubrication and sealing of the machine tool). 6.7.1 Operation test of the maximum weight of the workpiece carried by the machine tool (spot check) The maximum weight of the workpiece carried by the machine tool specified in the design is installed on the machine tool, and the machine tool is operated at low speed and high speed specified in the design to test whether the machine tool operates smoothly and reliably.
6.7.2 Torque test of the main transmission system of the machine tool The torque test includes:
a. Test of the maximum torque of the main transmission system of the machine tool; b. Test of the machine tool exceeding the maximum torque by 25% for a short time. During the test, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified torque. Check whether the transmission components and speed change mechanism of the machine tool transmission system are reliable, and whether the machine tool is stable and the movement is accurate.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum torque, but random inspection tests of the maximum torque and short-term exceeding 25% of the maximum torque should be carried out regularly.
6.7.3 Machine tool cutting resistance test
The machine tool cutting resistance test includes:
a. Test of the maximum cutting resistance of the machine tool;
b. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time. During the test, select a tool with suitable geometric parameters, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified cutting resistance. Check whether each motion mechanism and transmission mechanism is flexible and reliable, and whether the overload safety device is reliable.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum cutting resistance, but random inspection tests should be carried out regularly at the maximum cutting resistance and when the maximum cutting resistance exceeds 25% for a short time. 6.7.4 Test of the main transmission system of the machine tool at maximum power (random inspection) Select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, feed rates, and change the cutting depth one by one to make the machine tool reach maximum power (generally the rated power of the motor). Check the structural stability, metal removal rate, and electrical systems of the machine tool to see if they are reliable.
6.7.5 Anti-vibration cutting test (random inspection)
In addition to the maximum power test, some machine tools should also undergo the following tests: a. Limited power cutting test (the full power of the machine tool cannot be used due to process restrictions); b. Limit cutting width test,
According to the type of machine tool, select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, and feed rates to test and verify the stability of the machine tool structure. 6.7.6 Transmission efficiency test (only carried out during type inspection) When the machine tool is loaded until the motor reaches the maximum power, use special instruments to test the transmission efficiency of the main transmission system of the machine tool. Note: ① For machine tools that do not need to be fully tested in Article 6.7, they should be tested in accordance with special regulations. ② The cutting tests specified in Articles 6.7.2 to 6.7.5 can be replaced by instruments, but they should be regularly inspected using cutting test methods. ③ The maximum weight, maximum torque and maximum cutting resistance of the workpiece all refer to the maximum values ​​specified in the design. 6.8 Machine tool accuracy inspection
Machine tool accuracy inspection is to inspect the influence of various factors of the machine tool on the accuracy of the processed workpiece. 6.8.1 Geometric accuracy and transmission accuracy inspection
Inspect according to the provisions of relevant standards such as the accuracy of various types of machine tools. During the inspection, the movement of each part should be manual or slow-speed. The geometric accuracy of the machine tool should be inspected before and after the load test. For machines that are not subjected to load tests, the test should be conducted after the idle running test. The actual measured value of the last accuracy test shall be recorded in the certificate of conformity.
6.8.2 Inspection of unevenness of movement
Inspect in accordance with the provisions of relevant standards.
6.8.3 Vibration test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.4 Rigidity test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.5 Thermal deformation test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.6 Working accuracy inspection
GB 9061---88
Inspect in accordance with the provisions of relevant standards such as the accuracy of various types of machine tools. 6.8.7 Other precision inspections
Inspections shall be conducted in accordance with the provisions of relevant technical documents. Note: Machine tools that do not require comprehensive inspections in accordance with Article 6.8 shall be inspected in accordance with special provisions. 6.9 Working test of machine tools
The working test of machine tools is to inspect the working conditions of machine tools when they are working under various possible conditions. 6.9.1 General-purpose machine tools and specialized machine tools shall be tested with different cutting specifications and methods of processing different types of test pieces (generally conducted during type inspection).
6.9.2 Special-purpose machine tools shall be tested under the prescribed cutting specifications and under the conditions of achieving part processing quality. General specialized machine tools shall also be tested in this item.
During the working test, all mechanisms, electrical, hydraulic, lubrication and cooling systems, and safety protection devices of the machine tools shall work normally. At the same time, the machine tool's part processing accuracy, productivity, vibration, noise, dust, oil mist, etc. shall also be inspected. 6.10 Life test (spot check)
Mass-produced machine tools shall be spot checked at the production plant or the user's plant and shall comply with the provisions of Article 3.9. 6.11 Others
Inspection shall be carried out in accordance with the contents specified in the order technical conditions. 7 Packaging
7.1 Before packaging, the machine tool shall be treated with rust prevention. The rust prevention of the machine tool shall comply with the provisions of standards such as JB2554. 7.2 For each machine tool sent to the user, a set of technical documents shall generally be provided with it. For machine tools with complex structures, two sets of operating instructions shall be provided.
7.3 The packaging of the machine tool shall comply with the provisions of standards such as JB2524 and JB3207. 8 Manufacturer's guarantee
Under the condition of complying with the transportation, storage, installation, commissioning, maintenance and use regulations of the machine tool, the manufacturer shall be responsible for repair, return or replacement if the machine tool is damaged or fails to work properly due to poor manufacturing and packaging quality within one year from the date of receipt by the user. Additional Notes:
This standard is proposed and managed by the National Technical Committee for Metal Cutting Machine Tools Standardization. This standard is drafted by the Beijing Machine Tool Research Institute. From the date of implementation of this standard, the former Ministry of Machinery Industry standard JB2278-78 "General Technical Requirements for Metal Cutting Machine Tools" will be invalidated. IS18 Inspection of hydraulic, pneumatic, cooling and lubrication systems The inspection of the working conditions of hydraulic, pneumatic, cooling and lubrication systems shall comply with the provisions of Article 3.6. 6.6.9 Inspection of measuring devices
The inspection of the working conditions of measuring devices shall comply with the provisions of Article 3.7. 6.6.10 Continuous idle operation test of the whole machine
For automatic, semi-automatic and CNC machine tools, a continuous idle operation test shall be carried out, and no failure shall occur during the entire operation process. The continuous operation time shall comply with the provisions of Table 4. During the test, the automatic cycle shall include all functions and the entire working range, and the rest time between each automatic cycle shall not exceed 1 min.
Machine tool automatic control type
Time, h
6.7 Load test of machine tool
Mechanical control
Electro-hydraulic control
Digital control
General CNC machine tool
Machining center
GB 9061—88
Load test is to test the working performance and reliability of the machine tool when it is running under load, that is, the processing capacity, load-bearing capacity and its operating state (referring to the change of speed, vibration, noise, lubrication and sealing of the machine tool). 6.7.1 Operation test of the maximum weight of the workpiece carried by the machine tool (spot check) The maximum weight of the workpiece carried by the machine tool specified in the design is installed on the machine tool, and the machine tool is operated at low speed and high speed specified in the design to test whether the machine tool operates smoothly and reliably.
6.7.2 Torque test of the main transmission system of the machine tool The torque test includes:
a. Test of the maximum torque of the main transmission system of the machine tool; b. Test of the machine tool exceeding the maximum torque by 25% for a short time. During the test, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified torque. Check whether the transmission components and speed change mechanism of the machine tool transmission system are reliable, and whether the machine tool is stable and the movement is accurate.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum torque, but random inspection tests of the maximum torque and short-term exceeding 25% of the maximum torque should be carried out regularly.
6.7.3 Machine tool cutting resistance test
The machine tool cutting resistance test includes:
a. Test of the maximum cutting resistance of the machine tool;
b. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time. During the test, select a tool with suitable geometric parameters, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified cutting resistance. Check whether each motion mechanism and transmission mechanism is flexible and reliable, and whether the overload safety device is reliable.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum cutting resistance, but random inspection tests should be carried out regularly at the maximum cutting resistance and when the maximum cutting resistance exceeds 25% for a short time. 6.7.4 Test of the main transmission system of the machine tool at maximum power (random inspection) Select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, feed rates, and change the cutting depth one by one to make the machine tool reach maximum power (generally the rated power of the motor). Check the structural stability, metal removal rate, and electrical systems of the machine tool to see if they are reliable.
6.7.5 Anti-vibration cutting test (random inspection)
In addition to the maximum power test, some machine tools should also undergo the following tests: a. Limited power cutting test (the full power of the machine tool cannot be used due to process restrictions); b. Limit cutting width test,
According to the type of machine tool, select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, and feed rates to test and verify the stability of the machine tool structure. 6.7.6 Transmission efficiency test (only carried out during type inspection) When the machine tool is loaded until the motor reaches the maximum power, use special instruments to test the transmission efficiency of the main transmission system of the machine tool. Note: ① For machine tools that do not need to be fully tested in Article 6.7, they should be tested in accordance with special regulations. ② The cutting tests specified in Articles 6.7.2 to 6.7.5 can be replaced by instruments, but they should be regularly inspected using cutting test methods. ③ The maximum weight, maximum torque and maximum cutting resistance of the workpiece all refer to the maximum values ​​specified in the design. 6.8 Machine tool accuracy inspection
Machine tool accuracy inspection is to inspect the influence of various factors of the machine tool on the accuracy of the processed workpiece. 6.8.1 Geometric accuracy and transmission accuracy inspection
Inspect according to the provisions of relevant standards such as the accuracy of various types of machine tools. During the inspection, the movement of each part should be manual or slow-speed. The geometric accuracy of the machine tool should be inspected before and after the load test. For machines that are not subjected to load tests, the test should be conducted after the idle running test. The actual measured value of the last accuracy test shall be recorded in the certificate of conformity.
6.8.2 Inspection of unevenness of movement
Inspect in accordance with the provisions of relevant standards.
6.8.3 Vibration test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.4 Rigidity test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.5 Thermal deformation test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.6 Working accuracy inspection
GB 9061---88
Inspect in accordance with the provisions of relevant standards such as the accuracy of various types of machine tools. 6.8.7 Other precision inspections
Inspections shall be conducted in accordance with the provisions of relevant technical documents. Note: Machine tools that do not require comprehensive inspections in accordance with Article 6.8 shall be inspected in accordance with special provisions. 6.9 Working test of machine tools
The working test of machine tools is to inspect the working conditions of machine tools when they are working under various possible conditions. 6.9.1 General-purpose machine tools and specialized machine tools shall be tested with different cutting specifications and methods of processing different types of test pieces (generally conducted during type inspection).
6.9.2 Special-purpose machine tools shall be tested under the prescribed cutting specifications and under the conditions of achieving part processing quality. General specialized machine tools shall also be tested in this item.
During the working test, all mechanisms, electrical, hydraulic, lubrication and cooling systems, and safety protection devices of the machine tools shall work normally. At the same time, the machine tool's part processing accuracy, productivity, vibration, noise, dust, oil mist, etc. shall also be inspected. 6.10 Life test (spot check)
Mass-produced machine tools shall be spot checked at the production plant or the user's plant and shall comply with the provisions of Article 3.9. 6.11 Others
Inspection shall be carried out in accordance with the contents specified in the order technical conditions. 7 Packaging
7.1 Before packaging, the machine tool shall be treated with rust prevention. The rust prevention of the machine tool shall comply with the provisions of standards such as JB2554. 7.2 For each machine tool sent to the user, a set of technical documents shall generally be provided with it. For machine tools with complex structures, two sets of operating instructions shall be provided.
7.3 The packaging of the machine tool shall comply with the provisions of standards such as JB2524 and JB3207. 8 Manufacturer's guarantee
Under the condition of complying with the transportation, storage, installation, commissioning, maintenance and use regulations of the machine tool, the manufacturer shall be responsible for repair, return or replacement if the machine tool is damaged or fails to work properly due to poor manufacturing and packaging quality within one year from the date of receipt by the user. Additional Notes:
This standard is proposed and managed by the National Technical Committee for Metal Cutting Machine Tools Standardization. This standard is drafted by the Beijing Machine Tool Research Institute. From the date of implementation of this standard, the former Ministry of Machinery Industry standard JB2278-78 "General Technical Requirements for Metal Cutting Machine Tools" will be invalidated. IS18 Inspection of hydraulic, pneumatic, cooling and lubrication systems The inspection of the working conditions of hydraulic, pneumatic, cooling and lubrication systems shall comply with the provisions of Article 3.6. 6.6.9 Inspection of measuring devices
The inspection of the working conditions of measuring devices shall comply with the provisions of Article 3.7. 6.6.10 Continuous idle operation test of the whole machine
For automatic, semi-automatic and CNC machine tools, a continuous idle operation test shall be carried out, and no failure shall occur during the entire operation process. The continuous operation time shall comply with the provisions of Table 4. During the test, the automatic cycle shall include all functions and the entire working range, and the rest time between each automatic cycle shall not exceed 1 min.
Machine tool automatic control type
Time, h
6.7 Load test of machine tool
Mechanical control
Electro-hydraulic control
Digital control
General CNC machine tool
Machining center
GB 9061—88
Load test is to test the working performance and reliability of the machine tool when it is running under load, that is, the processing capacity, load-bearing capacity and its operating state (referring to the change of speed, vibration, noise, lubrication and sealing of the machine tool). 6.7.1 Operation test of the maximum weight of the workpiece carried by the machine tool (spot check) The maximum weight of the workpiece carried by the machine tool specified in the design is installed on the machine tool, and the machine tool is operated at low speed and high speed specified in the design to test whether the machine tool operates smoothly and reliably.
6.7.2 Torque test of the main transmission system of the machine tool The torque test includes:
a. Test of the maximum torque of the main transmission system of the machine tool; b. Test of the machine tool exceeding the maximum torque by 25% for a short time. During the test, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified torque. Check whether the transmission components and speed change mechanism of the machine tool transmission system are reliable, and whether the machine tool is stable and the movement is accurate.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum torque, but random inspection tests of the maximum torque and short-term exceeding 25% of the maximum torque should be carried out regularly.
6.7.3 Machine tool cutting resistance test
The machine tool cutting resistance test includes:
a. Test of the maximum cutting resistance of the machine tool;
b. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time. During the test, select a tool with suitable geometric parameters, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified cutting resistance. Check whether each motion mechanism and transmission mechanism is flexible and reliable, and whether the overload safety device is reliable.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum cutting resistance, but random inspection tests should be carried out regularly at the maximum cutting resistance and when the maximum cutting resistance exceeds 25% for a short time. 6.7.4 Test of the main transmission system of the machine tool at maximum power (random inspection) Select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, feed rates, and change the cutting depth one by one to make the machine tool reach maximum power (generally the rated power of the motor). Check the structural stability, metal removal rate, and electrical systems of the machine tool to see if they are reliable.
6.7.5 Anti-vibration cutting test (random inspection)
In addition to the maximum power test, some machine tools should also undergo the following tests: a. Limited power cutting test (the full power of the machine tool cannot be used due to process restrictions); b. Limit cutting width test,
According to the type of machine tool, select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, and feed rates to test and verify the stability of the machine tool structure. 6.7.6 Transmission efficiency test (only carried out during type inspection) When the machine tool is loaded until the motor reaches the maximum power, use special instruments to test the transmission efficiency of the main transmission system of the machine tool. Note: ① For machine tools that do not need to be fully tested in Article 6.7, they should be tested in accordance with special regulations. ② The cutting tests specified in Articles 6.7.2 to 6.7.5 can be replaced by instruments, but they should be regularly inspected using cutting test methods. ③ The maximum weight, maximum torque and maximum cutting resistance of the workpiece all refer to the maximum values ​​specified in the design. 6.8 Machine tool accuracy inspection
Machine tool accuracy inspection is to inspect the influence of various factors of the machine tool on the accuracy of the processed workpiece. 6.8.1 Geometric accuracy and transmission accuracy inspection
Inspect according to the provisions of relevant standards such as the accuracy of various types of machine tools. During the inspection, the movement of each part should be manual or slow-speed. The geometric accuracy of the machine tool should be inspected before and after the load test. For machines that are not subjected to load tests, the test should be conducted after the idle running test. The actual measured value of the last accuracy test shall be recorded in the certificate of conformity.
6.8.2 Inspection of unevenness of movement
Inspect in accordance with the provisions of relevant standards.
6.8.3 Vibration test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.4 Rigidity test (spot check)
Inspect in accordance with the provisions of relevant standards.
6.8.5 Thermal deformation test (spot check)bzxz.net
Inspect in accordance with the provisions of relevant standards.
6.8.6 Working accuracy inspection
GB 9061---88
Inspect in accordance with the provisions of relevant standards such as the accuracy of various types of machine tools. 6.8.7 Other precision inspections
Inspections shall be conducted in accordance with the provisions of relevant technical documents. Note: Machine tools that do not require comprehensive inspections in accordance with Article 6.8 shall be inspected in accordance with special provisions. 6.9 Working test of machine tools
The working test of machine tools is to inspect the working conditions of machine tools when they are working under various possible conditions. 6.9.1 General-purpose machine tools and specialized machine tools shall be tested with different cutting specifications and methods of processing different types of test pieces (generally conducted during type inspection).
6.9.2 Special-purpose machine tools shall be tested under the prescribed cutting specifications and under the conditions of achieving part processing quality. General specialized machine tools shall also be tested in this item.
During the working test, all mechanisms, electrical, hydraulic, lubrication and cooling systems, and safety protection devices of the machine tools shall work normally. At the same time, the machine tool's part processing accuracy, productivity, vibration, noise, dust, oil mist, etc. shall also be inspected. 6.10 Life test (spot check)
Mass-produced machine tools shall be spot checked at the production plant or the user's plant and shall comply with the provisions of Article 3.9. 6.11 Others
Inspection shall be carried out in accordance with the contents specified in the order technical conditions. 7 Packaging
7.1 Before packaging, the machine tool shall be treated with rust prevention. The rust prevention of the machine tool shall comply with the provisions of standards such as JB2554. 7.2 For each machine tool sent to the user, a set of technical documents shall generally be provided with it. For machine tools with complex structures, two sets of operating instructions shall be provided.
7.3 The packaging of the machine tool shall comply with the provisions of standards such as JB2524 and JB3207. 8 Manufacturer's guarantee
Under the condition of complying with the transportation, storage, installation, commissioning, maintenance and use regulations of the machine tool, the manufacturer shall be responsible for repair, return and replacement if the machine tool is damaged or cannot work normally due to poor manufacturing and packaging quality within one year from the date of receipt by the user. Additional Notes:
This standard is proposed and managed by the National Technical Committee for Metal Cutting Machine Tools Standardization. This standard is drafted by the Beijing Machine Tool Research Institute. From the date of implementation of this standard, the former Ministry of Machinery Industry standard JB2278-78 "General Technical Requirements for Metal Cutting Machine Tools" will be invalidated. IS1a. Test of the maximum torque of the main transmission system of the machine tool; b. Test of the machine tool exceeding the maximum torque by 25% for a short time. During the test, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and change the feed rate or cutting depth step by step to make the machine tool reach the specified torque. Check whether the transmission components and speed change mechanism of the machine tool transmission system are reliable, and whether the machine tool is stable and the movement is accurate.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum torque, but random inspection tests of the maximum torque and short-term exceeding 25% of the maximum torque should be carried out regularly.
6.7.3 Machine tool cutting resistance test
The machine tool cutting resistance test includes:
a. Test of the maximum cutting resistance of the machine tool;
b. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time. During the test, select a tool with appropriate geometric parameters, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified cutting resistance. Check whether each motion mechanism and transmission mechanism are flexible and reliable, and whether the overload safety device is reliable.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum cutting resistance, but random inspection tests of the maximum cutting resistance and short-term exceeding 25% of the maximum cutting resistance should be carried out regularly. 6.7.4 Test (spot inspection) of the main transmission system of the machine tool to reach the maximum power Select the appropriate processing method, test piece (material and size), tool (material and geometric parameters), cutting speed, feed rate, and change the cutting depth one by one to make the machine tool reach the maximum power (generally the rated power of the motor). Check the structural stability of the machine tool, the metal removal rate, and the reliability of the electrical system.
6.7.5 Vibration resistance cutting test (spot check)
In addition to the maximum power test, some machine tools should also be subject to the following tests: a. Limited power cutting test (due to process conditions, the full power of the machine tool cannot be used); b. Limit cutting width test,
According to the type of machine tool, select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, and feed rates to test and verify the stability of the machine tool structure. 6.7.6 Transmission efficiency test (only carried out during type inspection) When the machine tool is loaded to the maximum power of the motor, use special instruments to test the transmission efficiency of the main transmission system of the machine tool. Note: ① For machine tools that do not need to be fully tested in Article 6.7, they should be tested in accordance with special regulations. ② The cutting tests specified in Articles 6.7.2 to 6.7.5 can be replaced by instruments, but they should be regularly inspected by cutting test methods. ③ The maximum weight, maximum torque and maximum cutting resistance of the workpiece all refer to the maximum values ​​specified in the design. 6.8 Precision test of machine tools
Precision test of machine tools is to test the influence of various factors of machine tools on the precision of machined workpieces. 6.8.1 Geometric precision and transmission precision test
The test shall be carried out in accordance with the provisions of relevant standards for the precision of various types of machine tools. During the test, the movement of each part shall be manual or motorized at low speed. The geometric precision of the machine tool shall be tested before and after the load test. For machine tools that do not undergo load test, the test shall be carried out after the idle running test. The actual measured value of the last precision test shall be recorded in the certificate of conformity.
6.8.2 Motion non-uniformity test
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.3 Vibration test (spot check)
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.4 Stiffness test (spot check)
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.5 Thermal deformation test (spot check)
Test according to the relevant standards.
6.8.6 Working accuracy test
GB 9061---88
Test according to the relevant standards for the accuracy of various types of machine tools. 6.8.7 Other accuracy tests
Test according to the relevant technical documents. Note: Machine tools that do not need to be fully tested in Article 6.8 should be tested in accordance with special regulations. 6.9 Working test of machine tools
The working test of machine tools is to test the working conditions of machine tools when they are working under various possible conditions. 6.9.1 General-purpose machine tools and specialized machine tools should be tested with different cutting specifications and methods of processing different types of test pieces (generally carried out during type inspection).
6.9.2 Special-purpose machine tools should be tested under the specified cutting specifications and under the conditions of achieving part processing quality. General specialized machine tools should also be tested in this item.
During the working test, all the mechanisms, electrical, hydraulic, lubrication and cooling systems and safety protection devices of the machine tool should work normally. At the same time, the machine tool's parts processing accuracy, productivity, vibration, noise, dust, oil mist, etc. should also be tested. 6.10 Life test (spot check)
Machine tools produced in batches should be spot checked at the manufacturer or user's factory and comply with the provisions of Article 3.9. 6.11 Others
Inspect according to the contents specified in the order technical conditions. 7 Packaging
7.1 Before packaging, the machine tool should be treated with anti-rust treatment. The anti-rust treatment of the machine tool should comply with the provisions of JB2554 and other standards. 7.2 Each machine tool sent to the user should generally be provided with a technical document. For machine tools with complex structures, two instruction manuals should be provided.
7.3 The packaging of the machine tool should comply with the provisions of JB2524, JB3207 and other standards. 8 Guarantee of the manufacturer
Under the condition of complying with the transportation, storage, installation, commissioning, maintenance and use regulations of the machine tool, the manufacturer is responsible for repair, return and replacement of the machine tool if it is damaged or cannot work normally due to poor manufacturing and packaging quality within one year from the date of receipt by the user. Additional remarks:
This standard is proposed and coordinated by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is drafted by the Beijing Machine Tool Research Institute. From the date of implementation of this standard, the former Ministry of Machinery Industry standard JB2278-78 "General Technical Conditions for Metal Cutting Machine Tools" will be invalid. IS1a. Test of the maximum torque of the main transmission system of the machine tool; b. Test of the machine tool exceeding the maximum torque by 25% for a short time. During the test, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and change the feed rate or cutting depth step by step to make the machine tool reach the specified torque. Check whether the transmission components and speed change mechanism of the machine tool transmission system are reliable, and whether the machine tool is stable and the movement is accurate.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum torque, but random inspection tests of the maximum torque and short-term exceeding 25% of the maximum torque should be carried out regularly.
6.7.3 Machine tool cutting resistance test
The machine tool cutting resistance test includes:
a. Test of the maximum cutting resistance of the machine tool;
b. Test of the machine tool exceeding the maximum cutting resistance by 25% for a short time. During the test, select a tool with appropriate geometric parameters, select an appropriate speed within the speed range less than or equal to the calculated speed of the machine tool, and gradually change the feed rate or cutting depth to make the machine tool reach the specified cutting resistance. Check whether each motion mechanism and transmission mechanism are flexible and reliable, and whether the overload safety device is reliable.
For machine tools produced in batches, it is allowed to test at 2/3 times the maximum cutting resistance, but random inspection tests of the maximum cutting resistance and short-term exceeding 25% of the maximum cutting resistance should be carried out regularly. 6.7.4 Test (spot inspection) of the main transmission system of the machine tool to reach the maximum power Select the appropriate processing method, test piece (material and size), tool (material and geometric parameters), cutting speed, feed rate, and change the cutting depth one by one to make the machine tool reach the maximum power (generally the rated power of the motor). Check the structural stability of the machine tool, the metal removal rate, and the reliability of the electrical system.
6.7.5 Vibration resistance cutting test (spot check)
In addition to the maximum power test, some machine tools should also be subject to the following tests: a. Limited power cutting test (due to process conditions, the full power of the machine tool cannot be used); b. Limit cutting width test,
According to the type of machine tool, select appropriate processing methods, test pieces (materials and dimensions), tools (materials and geometric parameters), cutting speeds, and feed rates to test and verify the stability of the machine tool structure. 6.7.6 Transmission efficiency test (only carried out during type inspection) When the machine tool is loaded to the maximum power of the motor, use special instruments to test the transmission efficiency of the main transmission system of the machine tool. Note: ① For machine tools that do not need to be fully tested in Article 6.7, they should be tested in accordance with special regulations. ② The cutting tests specified in Articles 6.7.2 to 6.7.5 can be replaced by instruments, but they should be regularly inspected by cutting test methods. ③ The maximum weight, maximum torque and maximum cutting resistance of the workpiece all refer to the maximum values ​​specified in the design. 6.8 Precision test of machine tools
Precision test of machine tools is to test the influence of various factors of machine tools on the precision of machined workpieces. 6.8.1 Geometric precision and transmission precision test
The test shall be carried out in accordance with the provisions of relevant standards for the precision of various types of machine tools. During the test, the movement of each part shall be manual or motorized at low speed. The geometric precision of the machine tool shall be tested before and after the load test. For machine tools that do not undergo load test, the test shall be carried out after the idle running test. The actual measured value of the last precision test shall be recorded in the certificate of conformity.
6.8.2 Motion non-uniformity test
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.3 Vibration test (spot check)
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.4 Stiffness test (spot check)
The test shall be carried out in accordance with the provisions of relevant standards.
6.8.5 Thermal deformation test (spot check)
Test according to the relevant standards.
6.8.6 Working accuracy test
GB 9061---88
Test according to the relevant standards for the accuracy of various types of machine tools. 6.8.7 Other accuracy tests
Test according to the relevant technical documents. Note: Machine tools that do not need to be fully tested in Article 6.8 should be tested in accordance with special regulations. 6.9 Working test of machine tools
The working test of machine tools is to test the working conditions of machine tools when they are working under various possible conditions. 6.9.1 General-purpose machine tools and specialized machine tools should be tested with different cutting specifica
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