JB/T 10274-2001 General technical requirements for AC servo motors for CNC machine tools
Some standard content:
JB/T 10274—-2001
The AC servo motors used in CNC machine tools can be divided into two categories: AC synchronous servo motors and AC asynchronous servo motors. Most AC synchronous servo motors are permanent magnet type. According to the different distribution of their excitation magnetic potential, this type of synchronous servo motor can be divided into sine wave type permanent magnet synchronous servo motors and square wave type permanent magnet synchronous servo motors. However, there are no international standards or standards of advanced foreign countries. This standard is compiled in China to make domestic products approach international standards and guide industry production. This standard is based on the requirements of JB/T8832-1999 "General Technical Conditions for Machine Tool Digital Control Systems", the International Electrotechnical Commission IEC60034-1 "Rating and Performance of Rotating Motors" (1996 Edition) and IEC72-1 "Dimensions and Power Levels of Rotating Motors" (1991 Edition), with reference to product samples of internationally renowned companies and combined with the production conditions of Chinese enterprises, and is as consistent as possible with the relevant provisions of the above-mentioned international standards. This standard adopts part of GB/T7345-1994 "Basic Technical Requirements for Controlling Micromotors". This standard is proposed and managed by the National Technical Committee for Industrial Automation System and Integration Standardization. The drafting unit of this standard is Beijing Machine Tool Research Institute. The main drafter of this standard is Li Chengzhao. This standard was first issued in June 2001. This standard is entrusted to Beijing Machine Tool Research Institute for interpretation. 616 1 Scope Machinery Industry Standard of the People's Republic of China General Technical Conditions for AC servo motors for CNC machine tools General specification for AC servo motors JB/T 10274—2001
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of AC servo motors for CNC machine tools.
This standard applies to AC servo motors (hereinafter referred to as motors) for CNC machine tools and similar purposes. 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 GB755---2000 Ratings and performance of rotating electrical machines (idtIEC60034-1:1996) GB/T756-1990 Cylindrical shaft extensions for rotating electrical machines GB/T757·1993 Conical shaft extensions for rotating electrical machines GB/T2423.3-1993 Basic environmental testing procedures for electrical and electronic products Test (a: Steady-state damp heat test method (eqvIEC60068-2-3:1984)
GB/T2423.16--1999 Environmental testing for electrical and electronic products Part 2: Test methods (idt IEC60068-2-10:1988)
Test" and guidelines: mildew
GB/T2828-1987 batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) GB4208-~-1993 enclosure protection grade (IP code) (eqvIEC529:1989) GB/T7345-1994 basic technical requirements for control micro motors GB/T73461998 basic shape and structure type of control motors GB/T10069.11988 determination method and limit of noise of rotating motors (neq ISO 61680-1 :1986)
GB/T10405-1989 Control micro motor model naming method JB/T8162-1999 Control micro motor packaging technical conditions 3 Definitions
This standard adopts the following definitions.
3.1 Working area
Noise engineering measurement method
Under the condition that the motor temperature rise does not exceed the allowable temperature rise, the area where the motor can work for a long time is called the continuous working area; outside the continuous working area, the area where the motor is allowed to run for a short time is called the intermittent working area. The working area is represented by the two-dimensional plane coordinates of torque and speed. 3.2 Rated power
The maximum power that the motor can output in the continuous working area. 3.3 Rated torque
Approved by China Machinery Industry Federation on June 4, 2001, implemented on October 1, 2001
JB/T10274--2001
The torque of the motor when it outputs rated power in the continuous working range. 3.4 Rated speed
The maximum speed allowed for the motor to work at rated torque in the continuous working range. 3.5 Continuous stall torque
The maximum torque that the motor can output when it stalls in the continuous working range. 3.6
Continuous stall current
The current corresponding to continuous stall torque in the continuous working range. 3.7 Rated voltage
The line voltage corresponding to the rated power of the motor in the continuous working range. 3.8 Maximum torque
The maximum torque allowed for the motor to output in a short time. 3.9 Maximum speed
The maximum speed that the motor can reach in the continuous working range. 3.10 Back EMF constant
The no-load back EMF value induced by the motor at unit speed. 3.11 Static friction torque
The maximum torque value when the motor applies torque on the shaft without causing rotation when it is not powered. 4 Classification
AC servo motors for machine tools can be divided into AC synchronous servo motors and AC asynchronous servo motors. Most AC synchronous servo motors are permanent magnet type, and are divided into square wave permanent magnet synchronous servo motors and sine wave permanent magnet synchronous servo motors. 4.2 Model naming
The model naming of the motor is in accordance with the provisions of GB/T10405, and consists of the machine frame number, product name code, performance parameter code and derived code.
4.2.1 Machine frame number
The machine frame number and its corresponding flange mounting hole center base circle diameter and mounting stop diameter are recommended to be used in accordance with the provisions of Table 1. Table 1
65(70)
130(145)
Note: The data in brackets can be selected but are not recommended, 618
Flange mounting hole center base circle diameter
65(70)
130(145)
JB/T 10274--2001
The connection dimensions and tolerances of the motor shall comply with the provisions of GB/T756, GB/T757 and GB/T7346. 4.2.2 Product name code
The product name code is represented by capital Chinese phonetic letters: SJT--AC synchronous servo motor;
SJY-AC asynchronous servo motor.
The feedback element code is represented by the following letters. When the motor is equipped with more than two feedback elements, the order of the element codes is CM.XW:
C-----tachogenerator;
Mphotoelectric pulse encoderbZxz.net
X—rotary transformer;
a position sensor.
When the motor is equipped with a power-off brake, it is represented by the capital Chinese Pinyin letter Yi and is located after the feedback element code. 4.2.3 Performance parameter code
The performance parameter code is represented by two digits or Chinese Pinyin letters. Its meaning should be explained in the special technical conditions. 4.2.4 Derived code
Derived refers to structural derivation and performance derivation. Derived codes are represented by capital Chinese Pinyin letters A, B, C·, but the letter "" shall not be used. Its meaning should be explained in the special technical conditions. 4.2.5 Model example
AC synchronous servo motor with resolver and brake: 165
SJT-XZ
Derived code
Performance parameter code
Product name code
Frame size
4.3 Basic appearance structure and installation type
The installation type of the motor is end stop with flange. The basic shaft extension type of the motor is keyway shaft extension. The feedback element is installed in the rear cover of the motor, and one or more feedback elements can be configured as needed. 5 Technical requirements
5.1 Environmental adaptability
5.1.1 Climate and environmental adaptability
The working climate and environmental conditions of the motor and the climate and environmental conditions for storage and transportation are shown in Table 2. Table 2
Ambient temperature
Relative humidity
Atmospheric pressure
Working climate conditions
10~→40℃
30%～95% (no condensation)
86～106 kPa
Storage and transportation climate conditions
40+55℃
395%(40℃)
86~-106 kPa
Altitude
When the altitude does not exceed 1000m, the motor should be able to guarantee various technical indicators. When the altitude exceeds 1000m, the weakening of air cooling effect needs to be considered. At this time, the design and use should be carried out according to the agreement between the manufacturer and the user. 619
5.1.3 Vibration and shock
JB/T 10274--2001
The motor shall be able to withstand the vibration and shock tests specified in 6.33 and 6.34. After the test, an appearance inspection shall be carried out. No damage, deformation of parts and loose fasteners are allowed. The motor shall be able to work normally after power is turned on. 5.2 Appearance and assembly quality
5.2.1 Appearance
The motor surface shall not have rust, coating shedding, bruises and scratches. The fasteners shall be firmly connected. The markings and the handwriting and contents of the wiring device and the nameplate shall be clear and shall not fall off. 5.2.2 Appearance and installation dimensions
The symbols of the motor appearance and installation dimensions are shown in Figure 1. The dimensional tolerance shall comply with the provisions of Table 3. Xe
Figure 1 Motor Installation Dimensions
The meanings of the dimensional symbols are as follows:
The maximum distance between the motor diameter or the two sides; A,---The maximum distance from the motor center line to the edge of the terminal box (or other assembly); Note: From the motor shaft extension end, the terminal box should be on the top (bottom) or right side of the motor: B-· ... Diameter; - flange stop height.
Machine frame
65(70)
65(70)
5.2.3 Axial clearance
Basic size
JB/T10274-2001
Tolerance band
The axial clearance of the motor shall comply with the provisions of Table 4. Machine frame
Axial clearance
5.2.4 Shaft extension radial runout
Limit deviation
100~165
The radial runout of the outer circle matching surface of the motor shaft extension shall comply with the provisions of Table 5. Table 5
Machine frame
Shaft extension radial runout
Basic size
5.2.5 Coaxiality of the mounting matching surface and verticality of the mounting matching end surface The coaxiality of the machine installation mating surface and the verticality of the installation mating end surface shall comply with the provisions of Table 6. Hole
Limit deviation
TMaximum
Machine frame
Coaxiality of the installation mating surface
Verticality of the installation mating end surface
5.3 Wire outlet method and marking
JB/T10274—2001
130~215
The wire outlet method of the power supply terminal and feedback element of the motor is to lead out through the terminal box or plug socket. The terminal should be clearly marked and should be specified in the special technical conditions. 5.4 Electrical performance requirements
This standard only specifies the electrical performance requirements of the AC servo motor itself. The feedback elements installed in the motor should meet the requirements of the corresponding standards. ||tt| |5.4.1 Insulation resistance
Under normal test climate conditions and extreme low temperature conditions specified in special technical conditions, the insulation resistance of each motor winding to the housing and between each winding should be not less than 20MQ, under specified high temperature conditions, the insulation resistance should be not less than 5MQ, and the insulation resistance after the damp heat test should be not less than 1Mo.
The voltage value of the megohmmeter used for insulation resistance inspection should comply with the provisions of Table 7. Table 7
Test voltage during withstand voltage test
500～1000
Megohmmeter voltage
5.4.2 Withstand voltage test
The motor winding and the housing should be able to withstand the test voltage specified in Table 8. There should be no insulation breakdown or arcing during the withstand voltage test lasting 1 minute, and the effective value of the leakage current of the winding should comply with the provisions of Table 9. The insulation resistance should be measured immediately after the test and should comply with the provisions of 5.1.1. During factory inspection, the 1 minute withstand voltage test can be replaced by a 5s test, and the test voltage remains unchanged. When the withstand voltage test is repeated, the test voltage is 80% of the specified value.
Rated voltage
>60~115
>115~220
Frame size
Effective value of leakage current
5.4.3 Static friction torque
55~130
The static friction torque of the motor should not be greater than the value specified in the special technical conditions. 5.4.4 No-load current
Test voltage (effective value)
JB/T10274—2001
The no-load current of the motor should be specified in the special technical conditions. 5.4.5 Direction of rotation
The motor can rotate in both directions. Connect according to the wiring mark. From the motor shaft extension end, the rotation direction of the motor shaft is counterclockwise and is specified as the positive direction.
5.4.6 Rated speed and maximum speed
The maximum steady-state speed of the motor under rated torque in the forward and reverse directions shall not be less than the value specified in the special technical conditions. The maximum speed in the continuous working range shall be specified in the special technical conditions. 5.4.7 Rated torque
The rated torque of the motor shall be specified in the special technical conditions. 5.4.8 Rated power
The rated power of the motor shall be specified in the special technical conditions. 5.4.9 Continuous stall torque
The continuous stall torque of the motor shall be specified in the special technical conditions. 5.4.10 Continuous stall current
The continuous stall current of the motor shall be specified in the special technical conditions. 5.4.11 Rated voltage
The rated voltage of the motor shall be specified in the special technical conditions. 5.4.12 Maximum torque
The maximum torque of the motor shall be specified in the special technical conditions. 5.4.13 Working area
The working area of the motor consists of continuous working area and intermittent working area, which shall be specified in the special technical conditions. 5.4.14 Back electromotive force constant
The back electromotive force constant of the motor shall be specified in the special technical conditions. 5.4.15 Rotational inertia
The rotational inertia of the motor rotor shall be specified in the special technical conditions. 5.4.16 Electrical time constant
The electrical time constant of the motor shall be specified in the special technical conditions. 5.4.17 Torque fluctuation rate
The torque fluctuation rate of the motor shall be specified in the special technical conditions. 5.4.18 Overspeed
The motor shall be able to withstand a no-load overspeed test of 120% of the maximum speed for 2 minutes. After the test, the rotor shall not have harmful deformation that affects the performance.
5.4.19 Temperature rise
When the motor winding works continuously in the continuous working area, the temperature rise of the stator winding should not exceed the provisions of the special technical conditions. 5.4.20 High and low temperature operation
The motor should be able to operate continuously and reliably under the working climate conditions specified in 5.1.1. 5.4.21 High and low temperature storage
The motor should be able to withstand the storage high and low temperature limit temperature test specified in 5.1.1. After the test, the motor insulation resistance under the extreme high and low temperature conditions should meet the requirements of 5.4.1, and the motor should be able to operate normally without load. 5.4.22 Steady damp heat
The motor should be able to withstand a constant damp heat test with a severity level of (40 ± 2) °C and a relative humidity of 90%-95% for 96 hours. Before the test, the motor shaft extension and mounting mating surface should be coated with anti-rust grease. After the test, the insulation resistance measured in the box should meet the requirements of 5.4.1. After the motor is taken out of the box, check that there is no obvious deterioration in the surface quality and rust that affects normal operation. 623
5.4.23 Noise
JB/T10274—2001
The maximum noise of the motor shall not exceed 70dB(A), and the specific value shall be specified in the special technical conditions. 5.4.24 Reliability
The reliability of the motor is measured by the mean trouble-free working time MTBF. The MTBF of the motor should not be less than 10,000 hours. The specific value should be specified in the special technical conditions. After the test, check that the rated speed and rated torque of the motor should comply with the provisions of 5.4.6 and 5.4.7.
5.4.25 Electromagnetic interference
When the special technical conditions require it, the electromagnetic interference of the motor should comply with the provisions of 4.31 of GB/T7345-1994. 5.4.26 Salt spray
When the special technical conditions require it, the motor should be able to withstand an 18-hour salt spray test. After the test, the motor should be disassembled and inspected. No part should have obvious signs of corrosion and destructive deterioration. 5.4.27 Mildew
When the special technical conditions require, the motor shall be able to withstand a 28-day mildew test. After the test, the mildew shall not exceed the level 2 specified in GB/T2423.15.
5.4.28 Motor housing protection level
The protection level shall be selected in accordance with GB1208, but shall not be lower than IP54, and shall be specified in the special technical conditions. The motor must be in accordance with 10.1 of GB755--2000 Grounding is required and should be clearly marked. 5.4.29 Mass
The mass (g) of the motor shall be specified in the special technical conditions. 6 Test methods
6.1 Test conditions
6.1.1 Atmospheric conditions for normal tests
All tests, unless otherwise specified, shall be carried out under the following climatic conditions: Ambient temperature: 15~35℃;
Relative humidity: 45%~75%;
Air pressure: 86~106 kPac
6.1.2 Standard atmospheric conditions for arbitration tests
When there is a dispute over the test results due to climatic conditions, the test results under the following conditions shall be used as the basis for determining the product: Ambient temperature: (20±1)℃;
Relative humidity: 63%~67%;
Air pressure: 86~106 kPa.
6.1.3 Reference standard atmospheric conditions
The reference atmospheric conditions used as the basis for calculation are as follows: ambient temperature: 20℃;
Relative humidity: 65%;
Air pressure: J01.3kPa.
6.1.4 Servo unit used for test
The AC servo unit used as test equipment shall comply with the provisions of the relevant standards. 6.1.5 Measuring instruments
During the test, the accuracy of the electrical measuring instruments used shall not be lower than Class 0.5 (except for megohmmeters), the accuracy of three-phase wattmeters shall not be lower than Class 1.0, the accuracy of mutual inductors shall not be lower than Class 0.2, the accuracy of digital speed meters (including decimal frequency meters) shall not be lower than 0.1%1 word, the accuracy of torque meters and dynamometers shall not be lower than 1%, and the accuracy of dynamometers shall not be lower than 1. 0 level, the error of thermometer 624
is within 1℃.
JB/T10274—2001
When selecting the instrument, the measured value should be within the range of 20% to 95% of the instrument range. When measuring three-phase power with the two-wattmeter method, the measured voltage and current values should be not less than 20% of the voltage range and current range of the wattmeter respectively. During the test, the readings of each instrument are read at the same time. When measuring three-phase voltage or three-phase current, the average value of the three-phase readings should be taken as the actual value of the measurement.
6.1.6 Installation of the motor
Unless otherwise specified, the motor should be installed horizontally on the standard test bracket shown in Figure 2 or Figure 3 during the test. The corresponding dimensions are shown in Table 10 and Table 11.
6.2 Appearance inspection
The appearance of the motor should be visually inspected to comply with the provisions of 5.2.1. 6.3 Check of appearance and installation dimensions
Use measuring tools that can ensure the requirements of dimensional accuracy to check the appearance and installation dimensions of the motor, which shall comply with the provisions of 5.2.2. Others
Heat sink
Insulation board
Countersunk hole 890
Heat sink, sleeve, support material: aluminum alloy, with black anodized surface. M6-6H
Figure 255~Standard bracket C for motors with frame No. 130
Counterbore 12×90°
Counterbore 11 depth 4
Heat sink
Insulation board
4XM4-6H
JB/T 10274—2001
3XM4-6H
Counterbore 8×90
Material for heat sink, sleeve and support: aluminum alloy, with surface anodized in black. ?
Figure 3165500 motor standard push bracket G
12×90°
/countersunk hole 12×905
Table 1055～130 engine base for heat sink size ℃ and E regulations Engine base number
Engine base number
165～500 engine base for heat sink size C and E regulations 215
6.4 Axial clearance inspection
Measure the axial clearance according to the method specified in 5.5 of GB/T7345--1994, which shall comply with the provisions of 5.2.3. Other equivalent methods are allowed to measure.
JB/T 10274—2001
6.5 Inspection of radial runout of shaft extension
Measure the radial runout of shaft extension according to the method specified in 5.6 of GB/T7345--1994. Its maximum value shall comply with the provisions of 5.2.4. 6.6 Inspection of coaxiality of mounting surface and verticality of mounting end surface According to the methods specified in 5.7 and 5.8 of GB/T7345-1994, the coaxiality of mounting surface and verticality of mounting end surface shall comply with the provisions of 5.2.5.
6.7 Inspection of outlet mode
Visually inspect the outlet mode and marking of the motor. They shall comply with the provisions of 5.3. 6.8 Insulation resistance test
Select the corresponding megohmmeter according to the provisions of 5.4.1 and measure the insulation resistance values of each winding of the motor to the housing and between each winding. They shall comply with the provisions of 5.4.1.
6.9 Withstand voltage test
The high voltage power supply used for the test has a frequency of 50Hz and the power waveform is as sinusoidal as possible. The power supply power and output impedance should be able to ensure that there is no significant waveform distortion and significant voltage change under various loads. The test equipment should be able to distinguish between winding leakage current and surge current. The motor is applied with test voltage according to the provisions of 5.4.2. The voltage value should start from no more than half of the full value of the test voltage, and then increase to the full value evenly or step by step not exceeding 5% of the full value. The time for the voltage to increase from half value to full value should be no less than 10$, and it should be maintained at the full value for 1 minute. During the entire test process, the voltage peak should not exceed 1.5 times the specified effective value, and the fault indicator should be monitored to determine whether the motor has breakdown discharge. And monitor the leakage current value, which should comply with the provisions of 5.4.2. At the end of the test, the test voltage should be gradually reduced to zero to avoid surges. After the test, measure the insulation resistance according to 6.8, which shall comply with the provisions of 5.4.1. 6.10 Static friction torque test
The motor is not powered on, and a torque is applied to the shaft by a hanging weight or other method. The torque value when the motor shaft is about to rotate but does not rotate continuously is the static friction torque of the motor. At least one point is selected at the test position, and a total of six data are measured in the forward and reverse directions. The values shall comply with the provisions of 5.4.3.
6.11 No-load current test
The motor is running at no-load and maximum speed, and the no-load current on the motor stator winding is measured. The maximum value shall comply with the provisions of 5.4.4.
6.12 Rotation direction test
The motor is wired and powered on according to the provisions of 5.3. When the servo unit gives a positive command, the rotation direction of the motor shaft shall comply with the provisions of 5.4.5.
6.13 Rated speed test and maximum speed test The motor is fixed on a standard test bracket and forms a servo device with the servo unit. The test environment should not be affected by external radiation and airflow. The servo unit inputs the rated speed command, and then gradually increases the load to the rated value. Under the condition that the temperature rise of the motor does not exceed the provisions of 5.4.19, the speed measured at this time should comply with the rated speed specified value of 5.4.6. The servo unit inputs the maximum speed command, and then gradually increases the load to the maximum torque value allowed at the maximum speed. Under the condition that the temperature rise of the motor does not exceed the provisions of 5.4.19, the speed measured at this time should comply with the maximum speed specified value of 5.4.6.
6.14 Rated torque test
The motor is fixed on a standard test bracket and forms a servo device with the servo unit. The test environment should not be affected by external radiation and airflow. The servo unit inputs the rated speed command, and then gradually increases the load. Under the condition that the temperature rise of the motor does not exceed the provisions of 5.4.19, the maximum torque at the rated speed is measured. The value should comply with the provisions of 5.4.7. 6.15 Rated power and rated voltage test
The motor is fixed on a standard test stand and forms a servo device with the servo unit. The test environment should not be affected by external radiation and airflow. The motor runs at rated speed and rated torque. When the temperature rise of the motor does not exceed the provisions of 5.4.19, the output power value of the motor should comply with the provisions of 5.4.8. At this time, the input voltage of the motor should comply with the provisions of 5.4.11. 6.16 Continuous stall torque and continuous stall current test 627
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