JB/T 8832-2001 General technical requirements for machine tool numerical control systems
Some standard content:
JB/T8832-2001
This standard is a combined revision of J13/T8832-1999 "General Technical Conditions for Machine Tool Digital Control Systems" and JB/T10055-1999 "Technical Conditions for Machine Tool CNC Systems Driven by Inlet and Outlet Motors". During the revision, the contents of the two standards were adjusted, merged, added and deleted. Compared with the original standard, the main differences in the internal aspects are: 1. The name of the standard is changed to "Technical Conditions for the Use of Machine Tool CNC Systems". 2. Electromagnetic compatibility (EMC) test items such as electrostatic discharge immunity, electrical fast transient pulse group immunity, voltage sag and short interruption immunity, and surge (impact) immunity are added to replace the original standard anti-interference ability test. 3. Requirements for color, wiring, protection, etc. are added, and items such as transportation test, leakage current test and stepper motor operation characteristic test are deleted.
4. The original standard appendix is replaced by the implementation rules. This standard replaces JB/F8832--1999 and JB/T10055--1999 from the date of implementation. Appendix A, Appendix B and Appendix C of this standard are all appendices of the standard. This standard is proposed and managed by the National Technical Committee for Standardization of Industrial Automation Systems and Integration. The drafting units of this standard are: Beijing Machine Tool Research Institute, National Machine Tool Quality Supervision and Inspection Center, etc. The main drafters of this standard are: Zheng Jiahu, Huang Zuguang, Shao Beiwei. This standard is entrusted to Beijing Machine Tool Research Institute for interpretation. This standard replaces the following versions: ZB150002.. 1987, JB/T8832-1999; ZB J50 007---1988. JB/T10055. 1999. 175
1 Scope
Machinery Industry Standard of the People's Republic of China
General technical requirements for numerical control systems of machine tools
JB/T 8832—2001
Replaces JB/T 8832-13990
JB/T 10053
This standard specifies the basic requirements for the design, manufacture and use of numerical control systems of machine tools, including technical requirements, inspection regulations, test methods, etc.
This standard is applicable to CNC machine tools for business purposes, including metal cutting machine tools, forging and pressing machine tools, woodworking machine tools and CNC systems for special processing machine tools. CNC systems for other purposes may also be implemented as a reference. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards, GB191--1990 Pictorial signs for packaging, storage and transportation
B/T3168-1993 Graphic symbols for operating instructions of digital control machine tools GB4208.-1993 Enclosure protection level (IP code) (eqVIEC529--1989) GB5080.7-:1986 Equipment reliability test Failure rate and mean time between failures under the assumption of constant failure rate verification test plan (idt IFC 605.7 ---1978)
GB/T5226.7--1996 Industrial machinery and electrical equipment Part 1: General technical conditions (eqvIEC2041:1992) GB/T81291997 Industrial automation system machine tool numerical control vocabulary (idtIS0) 2806:1994) GB8870-1988 Data format of machine tool digital control point, linear motion and contour control system (eqv is0 6983/1-1982)
GB9969.1--1998 General provisions for industrial product instructions
GB/T13384-1992 General technical conditions for packaging of electromechanical products GB/I 14436-1993
GB 15760-·- 1995
General provisions for industrial product assurance documents
General technical conditions for safety protection of metal cutting machine tools Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test GB/T 17626.2-1998
(idt IEC 61000-4-2:1995)
GB/T 17626. 4--- 1998
GB/T 17626.5—1999
Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test (idt IEC 61000-4-4: 1995)
Electromagnetic compatibility test and measurement technology Surge (shock) immunity test (idt IEC 61000-4-5:1995)
GB/T17626.11--:1999 Electromagnetic compatibility
Testing and measurement technology Voltage dips, short interruptions and voltage variations immunity test (idt IEC 61000-4-11:1994)JB/T3051--.1999
Nomenclature of coordinates and movement directions of CNC machine tools (eqvIS0841:1974)JB/T 3208---1999
Codes for preparatory function G and auxiliary function M in the program segment format of punched tape of CNC machine toolsApproved by China Machinery Industry Federation on September 3, 2001476
Implementation on December 1, 20013Definitions
This standard adopts the following definitions.
3.1 CNC system
JB/T8832—2001
A control system that uses numerical data. During operation, numerical data is continuously introduced to achieve automatic control of the machine tool processing process. The basic components of the CNC system include controllers and drive devices. 3.2 Electric cabinets (boxes)
Shells used to install CNC system components and parts, which can protect against certain external influences and prevent direct electric shock from any direction. 3.3 Reliability
The ability of a CNC system to perform specified functions under specified conditions and within a specified time. 3.4 Mean time between failures (MTBF) The average value of the time when a CNC system works without failure. 3.5 Electromagnetic compatibility (EMC)
The ability of a CNC system to operate normally in its electromagnetic environment and not cause any electromagnetic disturbance that it cannot withstand to anything in the environment: 3.6 Immunity to disturbance
The ability of a CNC system to face electromagnetic disturbance without reducing its operating performance. 3.7 Electrostatic discharge
Charge transfer caused by objects with different electrostatic potentials approaching each other or in direct contact. 3.8 Pulse group
A series of clear pulses with a limited number of pulses or an oscillation with a limited duration 3.9 Coupling clamp
A device with specified dimensions and characteristics that couples interference signals to the test line in a common mode without any electrical connection to the test line.
3.10 Voltage sag
The voltage at a certain point in the electrical system suddenly drops, and returns to normal after a short duration of half a cycle to a few seconds. 3.11 Surge (impact)
A transient wave of current, voltage or power transmitted along the line, which is characterized by a rapid rise and then a slow drop. 4 Technical requirements
4.1 Environmental adaptability
4.1.1 Climate environment
The CNC system should be able to operate normally in the following climate environment: ambient temperature: 0-40℃;
Relative humidity: 30%-95% (no condensation); atmospheric pressure: 86-106kPa.
4.1.2 Storage and transportation environment
The CNC system can be transported and stored in the temperature range of -40-+55℃ and humidity ≤95% (no condensation). However, moisture-proof, anti-vibration and anti-impact measures should be taken to avoid damage to the CNC system. 4.1.3 Mechanical environment
The CNC system should be able to withstand the vibration and impact of the conditions listed in Table 1. After the test, its appearance and assembly quality remain unchanged and it can still operate normally 477
Frequency range
Sweep rate
Amplitude peak
Vibration direction
Number of sweep cycles
4.2 Function
Vibration (sine) test
10 -55 Hz
JB/T 8832—2001
Impact acceleration
1 octave/min
x, y,
10 times/axis
Impact waveform
Duration
Number of impacts
Impact test
300 m/k
Half sine wave
No bottom surface
4.2.1. CNC systems can be divided into lathes, milling machines, grinders, punching machines, electrical machining centers and other types according to their functions and uses. The definition of each function shall comply with the provisions of GB/T8129. The functions of the CNC system shall meet the use requirements of the controlled machine tools, and shall be stipulated in the contract by both the supplier and the buyer. The specific functions and related parameters shall be described in detail in the product manual. 4.2.2 The coordinate axis and movement direction of the CNC system shall comply with the provisions of JB3/T3051. 4.2.3 The codes of the preparation function G and auxiliary function M used by the CNC system shall comply with the provisions of JB/T3208. 4.2.4 The data format used by the CNC system shall comply with the provisions of GB8870. 4.2.5 The CNC system shall have automatic and manual operation functions, program editing functions, self-diagnosis functions and alarm display functions. 4.3 Manufacturing quality
4.3.1 Appearance
There shall be no obvious dents, scratches, cracks, deformations on the surface of the electric cabinet, panel and parts, and the surface coating and plating shall not have defects such as bubbles, cracks, shedding or rust, and the dimensions shall meet the design requirements. 4.3.2 Signs
Switches, buttons, lamps, plug sockets, printed boards, etc. in the electric cabinet and on the panel shall have signs indicating their functions and comply with regulations. These signs shall be firm, clear, beautiful and durable. When using figurative symbols, they shall comply with the provisions of CGB/T3168. 4.3.3 Color
The colors of the connecting wires, switches, buttons and lamps on the panel shall comply with the provisions of Chapter 10 and Chapter 15 of GB/T5226.1-1996.
4.3.4 Wiring
Connecting wires and cables shall comply with the provisions of Chapter 14 of GB/15226.1~-1996, and wiring technology shall comply with the provisions of Chapter 15. 4.3.5 Protection
Electrical cabinets shall have measures to prevent foreign solid objects and liquids from entering, and their protection level shall not be lower than the requirements of IP54. If there are excessive pollutants (such as dust, acids, corrosive gases, salts) and radiation in the working, storage and transportation environment, the supply and demand parties shall enter into a special agreement. 4.3.6 Operation and maintainability
The design and installation of the electrical cabinet shall be convenient for operation and maintenance, and its requirements shall comply with the provisions of Chapter 13 of GB/T5226.1--1996. 4.4 Electrical safety requirements
4.4.1 Power supply safety
The electrical cabinet door shall have a special locking device, and the cabinet door must be opened with a key or special tool. When the door of the electric cabinet is opened, there must be an interlock switch to cut off the power supply. The live parts that cannot be disconnected by the interlock switch should have warning signs in accordance with the provisions of 18.2 of GB/T5226.1-1996 on the outside of their protective shells. The protection level of live parts in the motor to prevent direct electric shock should not be lower than IP2X. The accidental interruption and restoration of the power supply should not lead to safety accidents. Its safety protection requirements should comply with the provisions of Chapter 7 and Chapter 8 of GB15760--1995. 4.4.2 Protective grounding
There must be a protective grounding terminal in the electric cabinet, and it must have a PE mark. The power neutral line N must not be connected to the PE terminal inside the electric cabinet. The grounding wire connection in the electric cabinet should comply with the requirements of Chapter 8 of GB/T5226.1-1996. The continuity requirements of the protective grounding circuit should meet the requirements of 20.2 of this standard.
4.4.3 Insulation resistance
JB/T8832—2001
In various working climate environments, the insulation resistance measured when 500Vd.c is applied between the power circuit conductor and the protective grounding circuit of the CNC system should be greater than 1Mα.
4.4.4 Withstand voltage strength
The CNC system should be subjected to withstand voltage strength test, and its test conditions should comply with the provisions of 20.4 in GB/T5226.1---1996. The withstand voltage strength test time is set at 30s, and the leakage current is not greater than 5mA. There should be no breakdown and arcing during the test. 4.5 Power supply adaptability
The CNC system can operate normally under the following AC input power supply. Voltage change: rated input voltage +10%15% range; frequency change: 19~~51Hz continuous change. 4.6 Electromagnetic compatibility
4.6.1 Electrostatic discharge immunity test
When the CNC system is in operation, in accordance with the provisions of GB/T17626.2, an electrostatic discharge test is carried out between all parts frequently touched by the operator and the protective grounding terminal (PE). The contact discharge voltage is 6kV. The air discharge voltage is 8kV. During the test, the CNC system can operate normally. 4.6.2 Electrical fast transient pulse group immunity test When the CNC system is in operation, in accordance with the provisions of GB3/T17626.4, a peak value of 2kV and a repetition frequency of 5kHz pulse group are added between the AC power supply terminal and the protective grounding terminal (PE) for 1min; a peak value of 1kV is added to the I/O signal, data and control terminal cables with a coupling clamp, and the repetition frequency is 5kHz. Complex frequency 5kHz pulse group, time 1min. During the test, the CNC system can operate normally. 4.6.3 Surge (impact) immunity test
When the CNC system is running, in accordance with the provisions of GB/T17626.5, a surge (impact) voltage with a peak value of 1kV is superimposed between the AC input power phase lines; a surge (impact) voltage with a peak value of 2kV is superimposed between the AC input power phase line and the protective grounding terminal (PF). The surge (impact) repetition rate is 1 time/min, and the polarity is positive/negative. During the test, the positive/negative polarity is performed 5 times each, and the CNC system should be able to operate normally. 4.6.4 Voltage sag and short-time interruption immunity test When the CNC system is running, in accordance with the provisions of GB/T17626.11, the voltage of the AC input power supply at any time is superimposed. The amplitude drops to 70% of the rated value, the duration is 500ms, and the interval between successive drops is 10s; according to the provisions of 4.3 in GB/T5226.1--1996, the voltage is briefly interrupted for 3ms at any time in the AC input power supply, and the interval between successive interruptions is 10s. The voltage sag and short interruption are carried out 3 times each, and the CNC system should be able to operate normally.
4.7 Continuous operation
The CNC system should be tested for continuous operation for no less than 48 hours without failure. The test conditions are shown in Table 2, the ambient temperature is 40% of Table 2
L. Operating voltage
Time h
Rated value
24 hours is one cycle, and there are 2 cycles in total.
4.8 Noise
Rated value +10%
Rated value
Rated value 15%
When the CNC system is running, the maximum noise shall not exceed 78dB (A). The specific value shall be specified by the enterprise product standards according to different CNC systems.
4.9 Reliability
The reliability of the CNC system is evaluated by the mean time between failures (MTBF). The MIBF of the CNC system produced by the standard is set at three levels: 3000h, 5000h and 10000h. According to the requirements of different CNC systems, the enterprise product standards stipulate that 4.10 Nameplate
The product should have a nameplate including the model, name, manufacturer name, manufacturing date, rated voltage, number of phases, rated current and power, etc. The text should be clear, beautiful and durable. The nameplate should be posted firmly and easy to observe. 479
4.11 Documents
JB/T 8832—2001
4.11.1 Technical documents
The manufacturer should provide the user with instructions including installation, connection, use and maintenance. The manual shall comply with the provisions of (G139969.1.
4.11.2 Guarantee documents
The manufacturer shall provide the user with the CNC system inspection report, certificate of conformity and warranty document in accordance with GB/T14436. 4.11.3 Packaging documents
The manufacturer shall provide the user with a packing list, which shall include the number of packing boxes, product model, name and quantity; name, model and quantity of random accessories; name and quantity of technical documents, etc. 5
Inspection regulations
5.1 Inspection classification
The inspection of CNC systems is divided into three types: finalization inspection, factory inspection and type inspection. The manufacturer shall conduct inspections in accordance with the provisions of this standard during product finalization and production.
5.2 Finalization inspection||tt| |5.2.1 The CNC system shall pass the finalization inspection when it is designed and produced. 5.2.2 The items of finalization inspection are shown in Table 3.
5.2.3 If any fault occurs during the finalization inspection, the cause must be found out and the inspection must be repeated after the fault is eliminated. 5.2.4 During the finalization inspection, there should be at least 3 samples to be inspected. 5.2.5 After the inspection, the inspection department shall submit the finalization inspection report and make an assessment of the inspection results in accordance with the provisions of the appendix of this standard. 5.3 Factory inspection
Each CNC system that has been finalized for production shall pass the finalization inspection before leaving the factory. 5.3.1
The items of factory inspection are shown in Table 3.
5.3.3 If any fault occurs during the inspection, the cause must be found out and the inspection must be repeated after the fault is eliminated. The system can leave the factory only after passing the inspection. 5.3.4 After passing the inspection, the inspection department shall submit the inspection report and certificate of conformity. 5.4 Type inspection
Products produced in batches shall be subject to type inspection regularly. Type inspection shall also be conducted when important designs and processes are changed. 5.4.1
Type inspection items are shown in Table 3.
Samples for type inspection shall be randomly selected from products that have passed the factory inspection, and the number shall not be less than 3 units. 5.4.4 If any fault occurs during the inspection, the cause shall be identified and the fault shall be eliminated before re-inspection. After the inspection, the inspection department shall submit a type inspection report and make an assessment of the inspection results in accordance with the provisions of the appendix to this standard. 5.4.5
Inspection items
Environmental adaptabilitywww.bzxz.net
Manufacturing quality
Electrical safety
Power adaptability
Electromagnetic compatibility
Continuous operation
Technical requirements
Table 3,
Type inspection
Factory inspection
Type inspection
Inspection items
Reliability
Integrity of random documents
Technical requirements
Note: ○ means to be inspected; not to be inspected; * means optional. 6 Packaging and Shipping
6.1 Packaging
JB/T8832—2001
Table 3 (end)
Type Inspection
Factory Inspection
The packaging box must be firm. It is recommended to use wooden boxes, and measures should be taken to prevent moisture, vibration and collision. There should be graphic signs such as "Handle with Care", "Upward" and "Avoid Swirl" on the packaging box. Type Inspection
The packaging box must indicate the contract number, number and quantity, name, consignor, consignee, departure station, arrival station, weight, size, etc., and there should be a packing list. All signs should be clear, obvious and firm, and comply with the provisions of GB191 and GB/T13384. 6.2 Storage
The storage conditions of products should comply with the provisions of this standard. At the manufacturer, products with a storage period of more than one year should be re-inspected and can only be shipped after passing the inspection.
6.3 Transportation
When transporting products, they shall not be placed in an open-air environment. Attention shall be paid to prevent rain, snow, damage and mechanical damage. The transportation conditions shall comply with the provisions of this standard. 481
A1 Main Contents
IB/T 8832--2001
Appendix A
(Appendix of the standard)
Implementation Rules
The main contents include: judgment rules, inspection items, test methods, A2 Judgment Rules
In the judgment rules, the concept of "importance" is introduced. The so-called importance refers to the importance of the content required by the standard in the product quality. Here, it is divided into two levels of importance, A and B. A2.1 Level A importance
Key items that directly affect performance, immunity or directly endanger personal safety are included in the entry level importance: For the verification items listed as level A important, even if there are slight defects, they are judged as unqualified products. A2.2 B-level importance
Relevant inspection items that have no direct impact or little impact on the use of the product and have independent characteristics in the quality indicators are all listed as B-level importance. Two 1 levels are equivalent to one A level. That is, for inspection items listed as B-level importance, if two or more minor defects occur, they are also judged as unqualified products.
A3 Test conditions
General test conditions
In the implementation rules, except for special requirements for the test environment of individual test items, all other tests should be carried out under the following atmospheric conditions.
Ring baking temperature: 15~35℃.
Relative humidity: 45%~75%.
Human/card strength: 86～106kPa (below 1000m above sea level) Note: The electromagnetic conditions of the electromagnetic compatibility test shall not have an adverse effect on the test results. A3.2 Atmospheric conditions for arbitration tests
When determining the accuracy of the basic performance and technical parameters of the product or conducting arbitration tests, the following standard atmospheric conditions shall be used for reference temperature: 23℃±1℃.
Relative humidity: 48%--52%.
Atmospheric pressure: 86-106kPa (below 1000m above sea level). 44 Inspection items
See Table A1 for inspection items.
Inspection items
-General requirements (manufacturing quality basis)
【External
Signs and nameplates
Inspection items and importance
Inspection content and technical requirements
According to 4.3.2 and 1.15
Test methods
JB/T 8832—2001
Table A1 (end)
Test items
Operation and maintainability
Electrical safety
Power supply safety
Continuity of protective grounding circuit
Insulation resistance
Withstand voltage strength
Climate environment adaptability
Upper limit of working temperature
Lower limit of working temperature
Upper limit of transportation temperature
Lower limit of storage and transportation temperature
Standard damp heat
Mechanical environment adaptability
Power supply adaptability
Electromagnetic compatibility
Electrostatic discharge immunity
Electrical fast transient pulse group immunity
Surge (shock) immunity
Electrical Voltage sag and short interruption immunity
Continuous operation
Integrity of random documents
Reliability
General requirements (manufacturing quality) Inspection
Inspection content and technical requirements
Temperature 40℃
Temperature 0℃
Overflow 55℃
Temperature 10℃
Temperature 40℃Humidity 93%~95%
Importance
A5.1.1 Use visual inspection and other necessary means to inspect the CNC system according to the inspection contents and technical requirements of A4.1.1~A4.1.4 and A4,1.6. All inspection clauses shall comply with the relevant provisions of 4.3 and 1.10 of this standard Waterproof and dustproof test of cabinet shell
JB/T 8832-2001
According to the test methods in Chapter 12 and Chapter 13 of GB4208--1993, the enclosure of the electric cabinet shall be subjected to a waterproof and resistant test of not less than IP54. A5.2 Power supply safety inspection
Use visual inspection method according to A4.2.1 to inspect the numerical control system, and connect the power supply to conduct safety inspection on the electric cabinet door and power switch. Its safety shall comply with the relevant provisions of 4.4.1 of this standard. A5.3 Continuity test of protective grounding circuit A5.3.1 Test equipment and basic parameters
Protective grounding circuit continuity tester (PEI.V) Test error: ±0.05V
A5.3.2 Test procedure
a) Use visual inspection method to inspect the numerical control system according to A4.2.2. b) Test according to 20.2 of GB/T5226.1-1996. A5.4 Insulation resistance test
A5.4.1 Test equipment and basic parameters
a) Megaohmmeter 500+100V, accuracy level 1.0. b) Or use other equivalent test instruments instead. A5.4.2 Test method
Put the power switch or contactor of the CNC system in the on position (not connected to the power grid), use a megohmmeter between the input terminal of the CNC system AC power supply circuit and the protective grounding terminal, apply the test voltage for 1 minute, and read the insulation resistance value. The measured insulation resistance value should be greater than 1Ma. A5.4.3 Precautions
a) During the test, the contact points should be in reliable contact, and the insulation resistance between the test leads should be large enough to ensure accurate readings. b) After the test, the test object shall be safely discharged by wire. A5.5 Withstand voltage strength test
A5.5.1 Test equipment and basic parameters
a) Withstand voltage strength test device (AC) Applied voltage range: 0～3000V (adjustable); frequency: (50±1) Hz,
Voltage waveform: sine wave:
Distortion coefficient: <5%,
Output power: ≥0.5kVA.
b) A DC voltage test device that matches the peak value of the AC test voltage can also be used. A5.5.2 Test procedure
a) The CNC system and test instrument to be tested shall be placed on an insulating workbench or insulating material board (withstand voltage strength exceeds 3000V) h) During the test, the power switch or contactor of the CNC system shall be placed in the on position, but its power input terminal shall not be connected to the power grid. c) Before the test, components that are not suitable for high voltage testing and components used for overvoltage protection between the power supply and the PE terminal should be disconnected. d) Apply a test voltage of 1000V (50Hz) between the AC power input terminal and the protective grounding terminal of the CNC system and maintain it for 30s. The test results should comply with the provisions of 4.4.4 of this standard. A5.5.3 Precautions
a) During the test, the test voltage should be gradually increased to 1000V within 5 to 10s; after the test, the test voltage should be gradually reduced within 5 to 10s, and the test power supply should be disconnected after it is lower than the rated voltage value. b) After the test, the test product should be safely discharged using the grounding wire. A5.6 Climate and environmental adaptability test
A5.6.1 General requirements
During the climate and environmental test, the following relevant requirements should be followed: 484
JB/T 8832--2001
a) During the test, unless otherwise specified in the standard, the CNC system shall not be protected by any packaging. b) During the test, if the temperature is changed, the heating or cooling rate shall not exceed 1℃/min. Condensation and icing shall not occur during the temperature change process.
c) If condensation and icing are unavoidable, the CNC system may be sealed with polystyrene film without affecting the test. If necessary, an appropriate amount of moisture absorbent may be added to the sealed bag. d) The CNC system is powered on and operated under no-load conditions. A5.6.2 Lower limit of working temperature
A5.6.2.1 Test equipment and basic parameters
Low temperature test chamber
Low temperature range: 0-10℃, with a deviation of 2℃. The volume ratio of the CNC system is greater than 3:1. A5.6.2.2 Test method
a) Place the CNC system in the low temperature chamber and connect the power supply as required. b) Lower the temperature of the low temperature test chamber to 0℃. c) Start timing after 30 minutes of protection, and power on the CNC system to run the inspection program for 4 hours. d) During the test, the CNC system should operate normally. A5.6.3 Storage and transportation temperature lower limit
A5.6.3.1 Test equipment and basic parameters
Low temperature test box
Low temperature range: 40~45℃, deviation 12℃. The volume ratio of the volume to the CNC system is greater than 3:1. A5.6.3.2 Test procedure
a) Place the CNC system in the low temperature box, and seal it with polyethylene film if necessary. b) Lower the temperature of the low temperature test box to ~-40℃, keep it for 30 minutes, and then start timing. c) After the CNC system is stored for 4 hours, let the temperature in the box gradually rise to normal atmospheric conditions, and restore it to the initial state under this condition. d) Check the appearance, power on the inspection procedure, and it should run normally. A5.6.4 Working temperature upper limit and continuous operation A5.6.4.1 Test equipment and basic parameters
a) High temperature test box
High temperature range: 35~50℃, deviation ±2℃. Relative humidity: 30%~75%.
The volume ratio of the CNC system is greater than 3:1. b) The capacity of the three-phase voltage regulator is greater than 5kVA.
c) The capacity of the three-phase AC voltage regulator is greater than 5kVA.
A5.6.4.2 Test procedure
a) Place the CNC system in the high temperature test chamber and connect the power supply according to the requirements of the CNC system. b) Raise the temperature of the high temperature test chamber to 40℃. c) Power on the CNC system and run the inspection procedure for 48h, and check it every 4h. During the test, it should operate normally. The 24h voltage fluctuation is shown in Table A2.
T Operating voltage
Time h
A5.6.5 Storage and transportation temperature upper limit
Rated value
A5.6.5.1 Test equipment and basic parameters
High temperature test box
High temperature range: 50～60℃, deviation +2℃. Relative humidity: 30%~~55%.
JB/T 8832-2001
Table A2 Technical conditions for continuous operation
Volume and volume ratio of CNC system: 3:1. A5.6.5.2 Test procedure
Rated value
a) Put the CNC system into the high temperature box, heat it to 55℃, keep it for 30min, then start timing. Road
b) After the CNC system is stored for 4h, let the temperature in the box gradually drop to normal atmospheric conditions, and restore it to the initial state under the condition of pyrolysis. c) Check the appearance, power on and run the inspection program, which should run normally. 45.6.6 Fixed humidity test
A5.6.6.1 Test equipment and basic parameters
Humidity test chamber
High temperature range: 35~50℃, constant temperature deviation ±2℃Humidity: 35%~95%, constant humidity deviation 12%. The volume ratio of the volume to the CNC system is greater than 3:1. A5.6.6.2 Test conditions
a) The resistivity of the water used to generate humidity in the test is not less than 500Q·m. b) The discharged condensed water shall not be used as mixed source water before purification. A5.6.6.3 Test procedure
a) After the initial inspection, the CNC system is placed in the test chamber and the power supply is connected according to the requirements of the CNC system. b) Adjust the temperature and astringency in the test chamber according to A4.3.5 and keep it constant within the allowable deviation range. c) When the temperature and humidity reach the specified requirements, power on the CNC system and run the inspection program for 2 hours. It should run normally. d) After meeting the above conditions, the CNC system is stored for 46 hours without power. e) After the test period expires, the A5.4 test should be carried out immediately, and the test results should comply with the relevant provisions of this clause. [ ] Let the temperature and humidity in the box gradually return to normal atmospheric conditions. g) Check the appearance, power on and run the inspection program, it should run normally. A5.7 Mechanical environment adaptability test
A5.7. 1 Vibration test (sine) test
A5.7.1.1 Test equipment and basic parameters
a) Vibration test bench
Basic movement: sine function of time;
Motion axis: X, y, z three directions;
Frequency range: 5~75Hz;
Frequency speed: 1 octave/min±10%. b) Fixture
A5.7.1.2 Test method
a) After the initial inspection, the CNC system is fixed on the vibration table according to the working position, b) Sweep frequency endurance test.2 Test procedure
a) Place the CNC system in the high temperature test box and connect the power supply according to the requirements of the CNC system. b) Raise the temperature of the high temperature test box to 40℃. c) Power on the CNC system and run the inspection program for 48h, and check it every 4h. During the test, it should operate normally. The voltage fluctuation of 24h is shown in Table A2.
T Operating voltage
Time h
A5.6.5 Storage and transportation temperature upper limit
Rated value
A5.6.5.1 Test equipment and basic parameters
High temperature test box
High temperature range: 50～60℃, deviation +2℃. Relative humidity: 30%~~55%.
JB/T 8832-2001
Table A2 Technical conditions for continuous operation
Volume ratio to CNC system volume 3:1. A5.6.5.2 Test procedure
Rated value
a) The CNC system is placed in a high temperature box, heated to 55℃, and kept for 30 minutes before starting the timing. Road
b) After the CNC system is stored for 4 hours, the temperature in the box is gradually reduced to normal atmospheric conditions, and restored to the initial state under the condition of pyrolysis. c) Check the appearance, power on and run the inspection program, which should run normally. 45.6.6 Fixed humidity test
A5.6.6.1 Test equipment and basic parameters
Humidity test box
High temperature range: 35~50℃, constant temperature deviation ±2℃, relative humidity: 35%~95%, constant humidity deviation 12%. The volume ratio to the volume of the CNC system is greater than 3:1. A5.6.6.2 Test conditions
a) The resistivity of the water used to generate humidity in the test is not less than 500Q·m. b) The discharged condensed water shall not be used as mixed source water before being purified. A5.6.6.3 Test procedure
a) After the initial inspection, the CNC system is placed in the test box and the power supply is connected according to the requirements of the CNC system. b) Adjust the temperature and astringency in the test box according to A4.3.5 and keep it constant within the allowable deviation range. c) When the temperature and astringency reach the specified requirements, power on the CNC system and run the inspection program for 2 hours. It should operate normally. d) After the above conditions are met, the CNC system is stored for 46 hours without power. e) After the test period expires, the A5.4 test should be carried out immediately, and the test results should comply with the relevant provisions of this clause. [ ] Let the temperature and humidity in the box gradually return to normal atmospheric conditions. g) Check the appearance, power on the inspection program, and it should operate normally. A5.7 Mechanical environment adaptability test
A5.7. 1 Vibration test (sine) test
A5.7.1.1 Test equipment and basic parameters
a) Vibration test bench
Basic motion: sine function of time;
Movement axis: three directions of X, y and z;
Frequency range: 5～75Hz;
Frequency speed: 1 octave/min±10%. b) Fixture
A5.7.1.2 Test method
a) After the initial inspection, the CNC system is fixed on the vibration table according to the working position, b) Sweep frequency endurance test.2 Test procedure
a) Place the CNC system in the high temperature test box and connect the power supply according to the requirements of the CNC system. b) Raise the temperature of the high temperature test box to 40℃. c) Power on the CNC system and run the inspection program for 48h, and check it every 4h. During the test, it should operate normally. The voltage fluctuation of 24h is shown in Table A2.
T Operating voltage
Time h
A5.6.5 Storage and transportation temperature upper limit
Rated value
A5.6.5.1 Test equipment and basic parameters
High temperature test box
High temperature range: 50～60℃, deviation +2℃. Relative humidity: 30%~~55%.
JB/T 8832-2001
Table A2 Technical conditions for continuous operation
Volume ratio to CNC system volume 3:1. A5.6.5.2 Test procedure
Rated value
a) The CNC system is placed in a high temperature box, heated to 55℃, and kept for 30 minutes before starting the timing. Road
b) After the CNC system is stored for 4 hours, the temperature in the box is gradually reduced to normal atmospheric conditions, and restored to the initial state under the condition of pyrolysis. c) Check the appearance, power on and run the inspection program, which should run normally. 45.6.6 Fixed humidity test
A5.6.6.1 Test equipment and basic parameters
Humidity test box
High temperature range: 35~50℃, constant temperature deviation ±2℃, relative humidity: 35%~95%, constant humidity deviation 12%. The volume ratio to the volume of the CNC system is greater than 3:1. A5.6.6.2 Test conditions
a) The resistivity of the water used to generate humidity in the test is not less than 500Q·m. b) The discharged condensed water shall not be used as mixed source water before being purified. A5.6.6.3 Test procedure
a) After the initial inspection, the CNC system is placed in the test box and the power supply is connected according to the requirements of the CNC system. b) Adjust the temperature and astringency in the test box according to A4.3.5 and keep it constant within the allowable deviation range. c) When the temperature and astringency reach the specified requirements, power on the CNC system and run the inspection program for 2 hours. It should operate normally. d) After the above conditions are met, the CNC system is stored for 46 hours without power. e) After the test period expires, the A5.4 test should be carried out immediately, and the test results should comply with the relevant provisions of this clause. [ ] Let the temperature and humidity in the box gradually return to normal atmospheric conditions. g) Check the appearance, power on the inspection program, and it should operate normally. A5.7 Mechanical environment adaptability test
A5.7. 1 Vibration test (sine) test
A5.7.1.1 Test equipment and basic parameters
a) Vibration test bench
Basic motion: sine function of time;
Movement axis: three directions of X, y and z;
Frequency range: 5～75Hz;
Frequency speed: 1 octave/min±10%. b) Fixture
A5.7.1.2 Test method
a) After the initial inspection, the CNC system is fixed on the vibration table according to the working position, b) Sweep frequency endurance test.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.