Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T8777-1998
Technical conditions of section-bending machine
Technical conditons of section-bending machine1998-07-17Promulgated
National Bureau of Machinery Industry
1998-12-91Implementation
JB/8TT71998
This standard was proposed and managed by the National Forging and Pressing Machine Standardization Technical Committee, and the drafting unit of this standard was Changzhao Press Tool Factory. The main drafters of this standard are Pan Xianping, Li Shiping, Wen Gaohong, and Li Changtuo. 1. Scope
Machinery Industry Standard of the People's Republic of China
Profile bending machine
Technical conditions of section-berdtag mlchine The technical standard defines the reform requirements for the design, manufacture and acceptance of profile bending machines. This standard is applicable to profile bending machines (hereinafter referred to as profile bending machines) that bend profiles under cold conditions. 2 Cited standards
JB/T8777—1998
The provisions contained in the following standards shall become the provisions of this standard through reference in this standard. The colors indicated at the time of publication of this standard are valid: all standards are subject to revision. Parties using this standard should consider using the latest versions of the following standards as possible: GB 191—90
GB 3766-83
GB/T5228.1—1998
GB 6576—85
GB/36-91
GB 17120-1997
JE362384
JB/T 5775—91
JE/T 6103--92
JR/T 8356.1—96
JB/T 8609—1997
ZB J50 C02—R7
2B 150 011--89
ZBJ5001389
7R J62 001-86
3 Technical requirements
3. 1 General provisions
Packing, storage and transportation
General technical conditions for hydraulic systems
Industrial machinery and electrical equipment Part 1 General technical cases Lubrication system
Safety technical conditions for press machines
Noise reduction of machines
Technical conditions for die casting of forging presses
Types and basic rates of profile bending machines
Technical conditions for machine tool packaging
Technical conditions for welding parts of press machines
Technical conditions for laser control systems of machine tools for painting
Technical conditions for anti-drying of machine tools
Cleanliness of hydraulic system of forging machines
3.1.1 The type of machine shall comply with the provisions of this standard and be prepared according to the drawings and technical documents approved in the prescribed order. 3.1.2 The product design and layout of the bending machine should take into account the requirements of process aesthetics and ergonomics, and be easy to use, maintain, assemble, disassemble and transport.
3.3 The bending machine should not cause danger to people during manufacturing, installation, transportation, storage and use, and must comply with the provisions of B17120.
3.2 General requirements
3.2.1 The mass-produced bending machine should be evaluated for feasibility in accordance with the provisions of relevant standards. Approved by the Bureau of Machinery Industry on July 17, 1908, implemented on December 1, 1998
JB/T8777—1998
3.2.1 The various main components on the code machine should take wear measures and comply with the provisions of relevant standards. 3.2.3 The design of the bending machine should comply with JB/T6103 or be designed according to the requirements of the technical acceptance. 3.3.4 The parameters and dimensions of the bending machine shall be consistent with the product drawings and technical documents. 3.3.5 The operation of the bending machine shall have sufficient rigidity. Under the condition of maximum load (referring to the maximum cross-sectional modulus of the bending profile of this product), it shall be able to ensure its working precision, and its machine performance shall not exceed the requirements of high-quality carbon steel 45. The precision and working error of the bending machine shall comply with the provisions of relevant standards or technical documents. 3.2.6 The operating force of the operating handle and hand wheel of the bending machine shall not exceed 40N. The manual force of the hand wheel shall not exceed 9N. 3.2.7 The spare parts and accessories of the bending machine shall be interchangeable and comply with the provisions of relevant standards or technical documents. 3.2.B
3.2.9 The purchased accessories shall obtain a certificate of conformity and shall be installed on the bending machine for operation test. The matching molds of the bending machine should be ordered separately by the customer and the manufacturer. 3.3.10
3.2.11 The random technical documents of the bending machine include the product's certificate of conformity, packing list and instruction manual. The content of the instruction card should include the requirements for installation, transportation, storage, use, maintenance, safety and hygiene. 3.3 Quality of welding parts
3.3.1 The parts of important parts should have a certificate of conformity. 3.3.2 The gray iron parts should comply with the provisions of JB/T5775, and the brand parts should comply with the provisions of JB/T8609. 3.3.4 Important bearing welded components and chain forgings should be treated to eliminate internal stress. 3.4 Processing quality
3.4.! The parts should not have burrs, and should not have defects that reduce strength and deteriorate appearance. Specific requirements for processing should be specified in the product specifications.
3.4.2 Sharp edges on machined parts, except for special requirements in the working drawings, sharp edges not shown in the product drawings should be removed.
3.4.3 The molds for the prototype machine should not have defects that affect the machine performance. 3.4.4 The front grinding surface should not have any marks of previous machining. The scraping points of the sliding guide surface, the adjustment fastener and the cabinet should be uniform in the entire plane. When inspected by the color method or when inspected by the matching surface, there should be no less than six front grinding points in a 25rm×mm square.
3.4.5 The bare hand wheel, wheel cover and operating part of the prototype machine should be treated with anti-rust measures such as restoration or bluing, but shall not be painted. 3.4.6 The scale lines, characters and marks of the scale parts should be accurate and clear. 3.5 Assembly quality
3.5. The bending machine should be assembled according to the assembly process specifications. The parts and components assembled on the bending machine should meet the quality requirements. During assembly or assembly, it is not allowed to install parts such as plates and sleeves that are not on the product drawings. 3.5.2 The parts and components on the bending machine must be deburred and trimmed before assembly (except for special requirements) to eliminate the floating debris such as iron filings, oxide scale and casting speed.
3.5.3 The thickness of the feeler gauge allowed to be inserted between the important connecting parts shall not exceed 0.05mm if there is no special requirement. The thickness of the feeler gauge allowed to be inserted shall not exceed 1/4 of the general surface. The length of the contact surface that can be torn into the gauge should not exceed 1/3 of the circumference. 3.5.4 The axial position of the gear should not be greater than that specified in Table 1. Table 1 Axial misalignment of gears
Constant wheel
W--150
Differential
3.5.5 Adjustable movable guide rail. The margin is used to compensate for the wear or take other measures to ensure normal working clearance.
3.6 Electrical equipment
JB/T8777-1998
The equipment of the type wear machine shall comply with the relevant provisions of GBT5226.1. 3. Digital control system
The digital control system shall comply with the relevant provisions of ZB1SU "K/2, 38 Hydraulic, lubrication and cooling system
3.8.1 The pressure system of the type bending machine shall comply with the relevant provisions of GB3766. 3.8.2 The oil temperature of the oil inlet of the type bending machine during operation shall not be higher than 60℃. However, when the humidity of the commercial pressure system does not affect or damage the working performance of the machine, the temperature is allowed to be higher than 6℃, but the maximum temperature shall not exceed 65℃. 3.8.3 In the liquid system, the height of the suction port should not be greater than 10m. 3.8.4 The cleanliness of the liquid system shall comply with the provisions of BS2001. 3.8.5 The lubrication system of the machine shall comply with the provisions of GB6576. 3.6 The lubrication of important friction parts of the engine should be provided by a centralized lubrication system. Only when it is impossible to use a centralized lubrication system, a decentralized lubrication device can be used.
3.8.7 Decentralized lubrication indicator plates should be installed separately. The lubrication parts should be indicated on the plates. 3.8 The cooling and lubrication systems and other parts should not be condensed. The coolant should not enter the filtration system and lubrication system. 3.9 Appearance quality
7.9.1 The appearance and layout of the engine should comply with the provisions of 3.1.2. 3.9.2 The outer surface of the plastic separator should not have any protrusions, depressions, unevenness or other damage not specified on the product sample. Method 9.3: The anti-expansion cover on the pellet machine should be flat and smooth, and should not exceed the west or sink. 3.9.4 The outer edges of the joints and parts on the machine should be neat and symmetrical, and there should be no obvious misalignment. The misalignment and unevenness should not exceed the requirements of Table 2. The dimensions of the joint sides and the door edges should be >50-1250-1256-3160. Note: This is the difference between the length of the joint and the length of the joint. The misalignment of the joint surface is not the difference between the length of the joint and the distance between ... 7
Complete treatment shall not be equal to the nominal value
3.9.8 The thickness of the surface shall not be different from the nominal value
3.9.8 The boundary line between the thick and thin surfaces shall be clear. The removable assembly joints shall be cut after painting, and shall not be damaged during disassembly.
3.9.9 The exposed pipes shall be straight and even,
3.9.30 The head of the head screw shall not protrude from the surface of the part, and there shall be no eccentricity between the head and the countersunk hole. The fixing pin shall protrude from the surface of the part, and the exposed parts shall be exposed as much as possible. The design shall be approximately 1/8 of the angular value of the shaft. 3.9.11 Electrical, lubricating, liquid and cooling pipes shall be arranged in a tight and neat manner according to the specifications or slightly, and fixed with pipe clamps. The pipes shall not be twisted or folded, and shall be smooth at the bends. ..9.12 The arm connected to the moving parts should be as short as possible and should not be in contact with the moving parts. m
B/T877-1998
3.9.13 The plate and various signs of the bending machine should be clear and the nameplate should be fixed in a conspicuous position. The fixing should be straight, firm and not hanging, and it should comply with the provisions of B/T13306.
4 Test method
4.1 General requirements
4.1.1 During the test of the bending machine, the normal lubrication of each moving brush should be ensured, and the influence of the field on the control system should be prevented. 4.1.2 During the test, the agent and other parts that affect the performance of the bending machine should be adjusted, and the affected items should be rechecked. 4.1.3 The test should be carried out on the assembled machine. Except for the parts that are required to be disassembled during the inspection as specified in the standards and technical documents, other parts shall not be disassembled.
42 Appearance
The appearance quality of the inspection bending machine shall comply with the provisions of 3.9. 4.3 Accessories and spare parts
The accessories and spare parts of the inspection bending machine shall comply with the provisions of 3.2.8. 4.4 Number and size
The number and size of the inspection bending machine shall comply with the provisions of the sample and the relevant technical documents. 4.5 Assembly quality
45.1 The workmanship quality of the inspection bending machine parts shall comply with the standards of the product drawings and technical parts. 4.5.2 The assembly quality of the inspection bending machine shall comply with the provisions of 3.5. 4.6 Safety and protection
4.6.1 The front machine shall have reliable safety protection equipment and shall comply with the relevant provisions of GB1712. 4.6.7 Protective devices should be installed for gears, pulleys, etc. that may affect personal safety. When the working part moves to the extreme position, there should be safety protection devices. There should be reliable anti-loosening devices for parts that may come off. The hydraulic system of 4.6.3 type bending machine should have reliable overload protection device. It should be able to ensure that the machine belt works when fully loaded. When starting, it should be able to ensure that its parts will not be damaged. 4.6.4 The type bending machine shall have an interlocking device. 4. Idle operation test
4.7.1 Idle operation test time and action specifications) The continuous idle operation test time of the type bending machine shall not be less than 4h, of which the continuous operation time of the main transmission shall not be less than 2b, and its single operation time shall not be less than 1b. The operation time of the auxiliary transmission shall not be less than 1h. b) During the single operation time of the main transmission forward and reverse of the type bending machine, the number of times the brake is engaged is 10min--c) During the operation of the auxiliary transmission, the displacement test of the working data shall be carried out, and the cumulative time shall not be less than 0.5h. 4.7.2 Leakage change and absorption rise
Operate according to the action specifications specified in 4.7.2, and measure when the temperature reaches the specified value. 2) The guide rail and main shaft bearing plate and temperature rise of the type bending actuator shall comply with the provisions of Table 3. Table 3 Guide rail, bearing temperature and rise limit value to measurement part
Attached brake temporary learning
Attached brake temporary learning
1) The temperature of the high-efficiency brake should not be higher than, and the rise shall not exceed 5Uc) The pressure system should comply with the provisions of 3.5.2, 15
Note: When the whole machine passes through a period of time, if it is less than 57: small, the retreat speed reaches the secret value, 4.7.3 The action of each mechanism
JB/T87771998
A) When the type is installed according to the regulations, check whether the starting, stopping, forward and reverse operation, inching and other specifications of the actuator are correct, which can be followed:
b) Check whether the supporting yoke and other attached components are flexible and reliable! According to the upper limit lifting displacement display device, whether the quality is difficult to check, the regulation and cooling system work smoothly and can be measured: e) Check whether the electrical device is seasonal:
f! Check whether various limit, coupling, differential load protection devices and emergency stop cylinders and other safety devices are reliable. 4.8 Temperature rise and single drink free test comparison (chemical type inspection; 4.8.1 group for test
a) type bending machine Xin action disturbance range is continuous stroke; b) the external load is 70% of the standard force of the bending machine, the addition method should be simulated load, the test time is B five:) type Li machine's various mechanisms, auxiliary weights should be operated simultaneously: d) measure the temperature of each part, and its temperature rise should comply with the provisions of 4.7.2; electrical) check the action of the mechanism, and it should comply with the provisions of 4.7.3. 4.8.2 Single load test (
) type bending machine has a single stroke, and its operating specifications shall comply with the provisions of 4.7.1. The additional load shall not be less than 70% of the nominal force of the tested type, or 70% of the maximum load that the product can withstand. The test is for 8h; (c) type bending machine, the auxiliary device is intended to operate when: l) Check the action of each mechanism, and meet the requirements of 4.7.3. 4.8.3 For adjustable speed machines, test 4.1 and 4.R2 at the highest speed. Each working mechanism and auxiliary shaft device shall be tested at the maximum working capacity.
4.9 Noise
4.91 Determination of noise power system
The noise power level of the bending machine in each continuous operation under no-load operation shall be measured according to the method specified in IR3623. The value shall not be greater than 102IB (A).
4.9.2 Determination of noise pressure level
The noise pressure level of the bending machine in the no-load stroke shall be measured according to the method specified in 133623. The value shall not be greater than 102IB (A). 4.10 Electrical system
The air system of the bending machine shall be tested in accordance with the relevant provisions of 5226.1. 4.11 Digital control system
The digital control system of the bending structure shall be tested in accordance with the relevant provisions of 2H15002. 4.12 Filtering and cooling system
The working conditions of the pressure, cooling and lubrication systems of the bending machine shall comply with the relevant provisions of 3.8. 4.13 Rigidity
Under the maximum working load, the working rigidity shall be checked and the relative rigidity shall not be less than 11CCD. 4.14 Load testbzxZ.net
4.141 During the load test: the workpiece with the maximum bending diameter and the minimum bending diameter specified in 7B/DIN 1103 shall be rolled, and the full load test shall be carried out according to the closed mold loading method. The number of negative load tests shall not exceed 10:3, and the simulation load test time shall not exceed 10:5:4.【4.2 During the load test, the actions of each machine and the working system shall be coordinated. The operation of each auxiliary device shall be positive. 4.15 1. Blood test
The machine should be tested in accordance with the relevant standards or technical documents. 5.
4.16 Working sugar content test
JB/T 8777-1998
) The working precision should be tested in accordance with the provisions of relevant standards or technical documents. b) Working precision test is also carried out on the machine to process or manufacture the parts, and the whole or random inspection is carried out on the geometric size, quality, etc. of the raw materials or parts.
4.1T Super load
According to the nominal force of 110, the simulation loading test is carried out to test the sensitivity and reliability of the super load protection device. 4.16 Other technical parts of the connected machine products shall be tested in accordance with the relevant contents listed in the contract between the two parties. S Inspection and Testing
Bending machine inspection is divided into factory inspection and type inspection 5.1 Factory inspection
5.1.1. The purpose of the factory inspection is to check whether the manufacturing quality of the machine complies with the requirements of relevant standards and technical documents and whether the product quality is guaranteed.
5.1.2 The chain-type bending machine can leave the factory after passing the factory inspection. If the inspection cannot be carried out in the factory due to special reasons, it can be used in a wide range of applications! "Inspection, and delivery for use only after passing the inspection. 5.1.3 The factory inspection contents of plastics and machines include:) external
h) accessories:
c) parameters and dimensions:
d) processing and assembly quality:
e) safety protection device:
f) idling test;
g) noise test;
h) self-pneumatic system:
i) digital control system,
j) hydraulic. lubrication, cooling system:
k) load test:
1) geometric test!
m) others.
5.2 type inspection
9.2. 1. Type inspection is to comprehensively evaluate the quality of bending machines, to evaluate whether their design and manufacturing quality can meet the requirements of the production process and users, and whether they meet the requirements of standards and technical documents. 5.2.2. In any of the following situations, type inspection shall be carried out, and production shall be approved only after the type inspection is qualified. e. When new products or old products are transferred to production for trial production and adjustment; 1) After formal production, if there are major changes in structure, materials, and processes that may affect product performance c) When the product is resumed after one year of suspension; 2) When the inspection results are significantly different from the previous type control, the national quality supervision agency has issued a new inspection requirement. 5.23 The scope of type inspection of bending machines includes: 1) ; 2) ; 3) ; 4) ; 5) ; 6) ; 7) ; 8) ; 9) ; 10) ; 11) ; 12) ; 13) ; 14) ; 15) ; 16) ; 17) ; 18) ; 19) ; 20) ; 21) ; 22) ; 23) ; 24) ; 25) ; 26) ; 27) ; 28) ; 29) ; 30) ; 31) ; 32) ; 33) ; 34) ; 35) ; 36) ; 37) ; 38) ; 39) ; Accessories and spare parts;
Teaching and measuring
Assembly workshop
)Safety protection device:
f》Temperature rise and total load test:
g)Noise sound pressure level, sound power level!
10,000)Transmission efficiency:
)Electrical system;
1>Digital control system:
k)Hydraulic, pneumatic, lubrication, cooling system, 1 degree;
mGeometry
Working room:
0)Load test:
6Mark
JB/T 8777—199B
6.1 A label should be fastened on the outside of each bending machine. The label should indicate the following information: a) the name and address of the manufacturer; b) the model and the number of the product; and c) the year and number of production.
1.2 There should be a trademark on each bending machine. The trademark can also be printed on the label. 7 Packaging and storage and transportation
7.1 The packaging and storage and transportation of the bending machine should comply with the provisions of JB/TR356.1 and 191, and the storage method should comply with the relevant provisions of the product technical requirements.
7.2 The packaging should be sealed before packaging, and the sealing method should be selected according to ZBJ5C013. T.3 Before packaging, liquid lubrication, cooling, etc. should be completely discharged.
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