GB/T 4997-1993 General technical requirements for permanent magnet low speed DC tachometer generators
Some standard content:
National Standard of the People's Republic of China
General Technical Conditions for Permanent Magnet Low Speed
Direct Current Tchogemerator,General apecitkcatlon tor
Subject Content and Scope of Application
GB/T 4997—93
Generation GB 4997—85
This standard specifies the general technical requirements, acid test methods, inspection rules and marking, packaging, transportation and storage of permanent magnet low speed direct current tchogemerator.
This standard is applicable to permanent magnet low speed direct current tchogemerator. This standard should be used together with the special technical conditions for permanent magnet low speed direct current tchogemerator (hereinafter referred to as motor). 2 Reference standards
GB5872 Technical conditions for packaging of controlled micromotors GB7345 Basic technical requirements for controlled micromotors GB 7346 Basic appearance and structure of controlled micromotors GB10405 Model naming method for controlled micromotors 3 Product classification
3.1 Model
The motor model consists of the following parts according to the provisions of GB10405 1
3.1.1 Frame number
Product code
Performance parameter codebzxZ.net
Product name code
Frame number
The motors in this standard take the split-type as the basic installation type. The frame number and the corresponding frame outer diameter are as specified in Table 1. Approved by Shandong Bureau of Technology Supervision on December 28, 1993, implemented on October 1, 1994
Frame number
Outer diameter of frame for assembled motor
Outer diameter of frame for assembled motor
3.1.2 Product name code
GB/T 4997—93
CYD—Permanent magnet low-speed DC tachometer generator (lead-set diamond), CYDX permanent magnet low-speed DC tachometer generator (rare earth). 3.1-3 Performance parameter code
Performance parameter code is represented by .01~99.
3.1-4 Derived code
Derived code is represented by capital Chinese phonetic letters AB, but "I\O" letters shall not be used. Letter Z represents assembled motor, and the meaning of other letters shall be specified by special technical conditions. 3.1.5 Model example
55CYD01 refers to the aluminum-nickel-drilled permanent magnet low-speed DC tachometer generator product with the first performance parameter of the 55 frame size, and 55CYDX01Z refers to the earth-moving permanent magnet low-speed DC tachometer generator assembly product with the first performance parameter of the 55 frame size. 3.2 Structural dimensions
3.2.1 Aluminum-drilled magnet steel assembled motor
It is installed with the stator outer circle and the rotor shaft hole. The installation type is shown in Figure 1 and Figure 2. The dimensions should comply with Table 2. 3.2.2 Aluminum-nickel-drilled magnet steel assembled motor
It is installed with the increase of the stop and screw hole. The installation type is shown in Figure 3. The dimensions should comply with the provisions of Table 3. It is installed with a square flange. The installation type is shown in Figure 4. The dimensions should comply with the specifications of Table 4. 3.2.3 Static earth magnet steel motor
The structural dimensions of the rare earth magnet steel motor are specified by special technical conditions. 3.2.4 Shaft extension type of assembled motor
The shaft extension type of assembled motor is flat keyway shaft extension. Flat keyway shaft extension is shown in Figure 5, and the size should comply with the provisions of Table 5. The performance is determined by the brush multiplication
Stator frame
GB/T 4997-93
Machine frame
GB/T 4997—93
Basic size
Limit deviation
Basic size limit deviation
Machine frame
Greater than
130130
160160
200200
320320
GB/T 4997--93
170154
200184
250224
380358
Not more than
Frame size
Shaft diameter
Basic size
Limiting plasticity
—0,020
-0,041
GB/T 4997--93
Basic size
Polar resistance deviation
The material of the key is steel with a compressive strength of not less than 588N/mm. 3.3 Circuit diagram
The circuit diagram is shown in Figure 6.
3.4 Technical performance parameters
The technical performance parameters of the motor shall be as specified in Appendix A (reference). 4 Technical requirements
4.1 Environmental conditions for use
Basic dimensions
Limited deviation
The environmental conditions for use of the motor shall comply with the provisions of 1a, 1 and 2 in Table 1 of Article 4.1 of GB7345. In special cases, the humidity and air pressure in the environmental conditions for use may be selected according to the numerical system specified in Article 4.1.2 of GB7345. 4.2 Lead wires or terminals
4.2.1 Lead wires, threaded terminals or terminals may be used as lead wires, and the length of the lead wires shall comply with the provisions of the special technical conditions. 4.2.2 Lead wire marking: Lead wires are red and black, threaded terminals are "+" and "-", and terminals are 1 and 2, indicating the positive and negative polarity of the motor respectively.
4.2.3 The strength of lead wires, threaded terminals and terminals shall comply with the provisions of Article 4.11 of GB7345. 4.3 Appearance and assembly quality
4.3.1 Appearance
The motor surface should not be rusted, dented, scratched, or coated. Fasteners should be firmly connected. Lead wires, threaded terminals or terminals should be intact and color and logo should be correct. The words and content on the chrome plate should be clear and not fall off. 4.3.2 Appearance and installation dimensions
The appearance and installation dimensions of the motor should comply with the provisions of Article 3.2. 4.3.3 Axial clearance
When special technical conditions have requirements, the diametral clearance of the assembled motor should comply with the provisions of the special technical conditions. 4.3.4 Axial clearance
The axial clearance of the assembled motor should comply with the provisions of Table 6. Table 6
Frame size
Axial discontinuity
4.3.5 Shaft extension radial runout
0.05~0.20
90~160
0.10~0.30
200320
0.15~0.40
130 and below frame size assembled motors’ radial runout should not exceed 0.02mm:160 and above frame size Newton motors’ radial runout should not exceed 0.03mm. 4.3.6 Coaxiality of mounting mating surface
The coaxiality of mounting mating surface of assembled motors shall comply with the requirements of Table 7. Table?
Frame number
Axis of mounting mating surface
4.3.7 Verticality of mounting mating end surface
The verticality of the mounting mating end surface of the assembled motor shall comply with the requirements of Table 8. Table 8
Machine base conductor
Verticality of installation mating end face
4.4 Insulation dielectric strength
90~130
200320
200~320
The motor should be able to withstand the test voltage specified in Table 9 and should comply with the provisions of Article 4.18 of GB7345, but the leakage current peak value of motors with frame sizes of 130 and below should not be greater than 5mA, and the current peak value of motors with frame sizes of 160 and above should not be greater than 10mA, Table 9
Output voltage value B0 and below at maximum linear operating speed
>60~115
>115~220
When repeating the insulation dielectric strength test, the test voltage value shall be 80% of the value specified in Table 9. 4.5 Insulation resistance
Test voltage (effective value)
Under the positive test atmospheric conditions and the extreme low temperature conditions specified in the special technical conditions, the insulation resistance between the armature winding and the motor shaft hole should be not less than 50MQ; under the corresponding high temperature conditions, the insulation resistance should be not less than 10MM. 4.6 Voltage polarity
Facing the commutator end, when the motor shaft rotates in the counterclockwise direction, the No. 1 terminal block, (red) lead wire or "ten" threaded terminal block should be positive, and the No. 2 terminal block, (black) lead wire or "two" threaded terminal block should be negative. 4.7 Armature resistance
The armature resistance should comply with the provisions of the special technical conditions, and its tolerance should be within ±12.5% of the specified value. 4.8 Excitation static friction torque
The excitation static friction torque should comply with the provisions of the special technical conditions. 4. 9. Output voltage asymmetry
Output voltage asymmetry should be no greater than 1%. 4.10 Output slope
The output slope shall comply with the special technical conditions. 4. 11 Ripple coefficient
The ripple coefficient shall not be greater than that specified in Table 10.
Machine seat
Ripple coefficient
4.12 Linear error
The linear error shall not be greater than that specified in Table 11. Seat
National
Linear error
4.13 Armature moment of inertia
The armature moment of inertia shall comply with the special technical conditions. 4. 14 Weight
The weight of the motor shall comply with the special technical conditions. 4.15 Low temperature
160~200
The motor shall be able to withstand the limit low overflow test specified in the special technical conditions. After the test, its insulation resistance shall comply with the provisions of Article 4.5, and there shall be no cracks on the armature surface that affect the normal operation of the motor. 4.16 The motor should be able to withstand the plate limit high voltage test specified in the special technical conditions. The insulation resistance of the motor after the test should comply with the provisions of Article 4.5; the motor is taken out of the box and the insulation dielectric strength test is immediately carried out according to the retest voltage. The grease in the bearing of the assembled motor is not allowed to overflow. 4.17 The motor should be able to withstand the dynamic test specified in Table 5 of Article 4.25 of GB7345. After the test, the motor should not have loose parts or damage, and the ripple factor and output slope should comply with the provisions of the special technical conditions. 4.18 Impact The motor should be able to withstand the impact test specified in Table 6 of Article 4.26 of GB7345. After the test, the motor should not have loose parts or damage, and the ripple factor and output slope should comply with the provisions of the special technical conditions. 4.19 Steady damp heat
GB/T 4997-93
The motor should be able to withstand the steady damp heat test specified in Article 4.28.1 of GB7345. After the test, the insulation resistance is measured in the box, and its value should not be less than 1MO. The motor should not have obvious surface quality changes and rust that affects normal operation. 4.20 Life
The motor runs at 50% of the maximum linear operating speed without load. Without replacing the brush, the motor of 55~130 frame size should be able to work normally and continuously for 500h; the motor of 160~320 frame size should be able to work normally and continuously for 1000h. After the test, check that the ripple coefficient should comply with the provisions of Article 4.11, and check that the output slope should comply with the provisions of the special technical conditions. 4.21 Salt
When the special technical conditions require it, the motor should be able to withstand a 48h salt spray test. After the test, the motor should be disassembled for inspection, and no obvious signs of corrosion and destructive deterioration should be found in any part. 5 Test method
5.1 Test conditions
5.1.1 Climate conditions
The climate conditions shall comply with the provisions of 5.1.1, 5.1.2 and 5.1.3 of GB7345. 5.1.2 Installation of motor
Unless otherwise specified, the motor shall be installed horizontally on the test bracket during the test. 5.1.3 Accuracy of test instruments
Generally, the speed accuracy of the steady-speed turntable shall not be less than 0.5%. For the performance index with the measured accuracy requirement of not less than 0.5%, the speed accuracy of the turntable shall not be less than 0.1%, and the accuracy of other test instruments shall not be less than 0.5. 5.2 Lead wires or terminals
5.2.1 Lead wire marking
The lead wire marking of the motor shall comply with the provisions of 4.2.2. 5.2.2 Strength of lead wires
The motor shall be inspected according to the method specified in Article 5.10.1 of GB7345. After the test, it shall meet the requirements of Article 4.2.3. 5.2.3 Strength of threaded terminals
The motor shall be tested according to the method specified in Article 5.10.2 of GB 7345. After the test, it shall meet the requirements of Article 4.2.3. 5.2.4 Strength of terminal lugs
The motor shall be tested according to the method specified in Article 5.10.3 of GB7345. After the test, it shall meet the requirements of Article 4.2.3. 5.3 Appearance and assembly quality
5.3.1 Appearance
Visually inspect the appearance of the motor and it shall meet the requirements of Article 4.3.1. 5.3.2 Appearance and installation dimensions
Use a measuring tool that can ensure the dimensional accuracy requirements to check the appearance and installation dimensions of the motor, which shall comply with the requirements of Article 4.3.2.5.3.3 Radial distance
The motor housing is fixed, and the measuring head of the dry gauge is placed on the shaft and as close to the bearing position as possible. The force specified in the special technical conditions is vertically applied to the shaft, first in one direction, then in the opposite direction. The difference between the two readings of the dry gauge shall comply with the requirements of Article 4.3.3. Other equivalent methods are allowed to be used for measurement.
5.3.4 Axial distance
The motor is fixed, and the measuring head of the dry gauge is placed on the top of the shaft extension. The force axis specified in the special technical conditions is applied to the rotating shaft, first in one direction, then in the opposite direction. The difference between the two readings of the dry gauge shall comply with the requirements of Article 4.3.4. Other equivalent methods are allowed to be used for measurement. 5.3.5 Shaft extension radial runout
The motor armature is fixed. When the shaft is slowly rotated, use a micrometer to measure the radial runout at three locations on the shaft extension fitting position. The maximum value shall meet the requirements of Article 4.3.5.
5.3.6 Coaxiality of the mounting fitting surface
GB/T 4997-93
Turn the motor armature over, place the measuring head of the micrometer on the mounting fitting extension surface, rotate the stator, and the difference between the maximum and minimum readings of the micrometer shall meet the requirements of Article 4.3.6.
5.3.7 Verticality of the mounting fitting end surface
Fix the motor armature, place the measuring head of the micrometer on the mounting fitting end surface, rotate the stator, and the difference between the maximum and minimum readings of the micrometer shall meet the requirements of Article 4-3.7.
5.4 Insulation dielectric strength
The insulation dielectric strength test shall be carried out in accordance with the method specified in Article 5.17 of GB7345, and the test results shall comply with the requirements of Article 4.4. 5.5 Insulation resistance
Use a 600V megohmmeter to measure the insulation resistance between the motor winding and the housing and the shaft hole, and its value shall comply with the requirements of Article 4.5. 5.6 Voltage polarity
According to Article 4.6, the motor shall be operated at a speed not exceeding the maximum linear operating speed, and the polarity of the motor shall comply with the provisions of Article 4.6. 5.7 Armature resistance
The armature is stationary at three different positions. Use a digital multimeter to measure the armature resistance of the two lead wires or terminals of the motor. The average value should meet the requirements of Article 4.7
5.8 Excitation static friction torque
Fix a disc at the end of the motor shaft extension. According to the requirements of special technical conditions, hang corresponding weights on the disc. Make the shaft rotate from any position at a speed not exceeding 6 minutes without stopping. During the test, rotate at least three times in each direction. The excitation static friction torque should comply with the provisions of Article 4.8:
5.9 Output voltage asymmetry measurement
Connect the motor to the steady-state table coaxially, clamp the stator, and connect the wires according to the diagram. The load resistance and the parallel resistance of the thick test instrument shall not be less than 100 times the armature resistance. Drive the steady-speed table and measure the positive and reverse output voltages (as shown in Figure 8) when the motor is at the maximum linear working trace. The output voltage asymmetry is calculated and determined by formula (1), and its value should comply with the requirements of Article 4.9. Test table
- Output voltage asymmetry, %
Wherein, K—
U+Output voltage value at the maximum linear working speed between positive and negative directions, VU_—Output voltage value at the maximum linear working speed between negative and positive directions, V, 5.10 Output slope
GB/T 4997--93
Connect the motor and the steady-speed turntable coaxially, and clamp the stator, and connect the wires according to Figure 7. The parallel resistance of the negative resistor and the internal resistance of the test instrument shall not be less than 100 times the armature resistance. Drive the steady-speed turntable to make the motor run within the maximum linear working speed range, and measure the output voltage of the motor at unit speed (expressed in V/(r·min-1)). Its value should meet the requirements of 4.10. 5.11 Ripple coefficient
Connect the motor to the steady-speed turntable coaxially, clamp the stator, and connect the wires according to Figure 7. The parallel resistance of the negative cut resistance and the test table internal resistance shall not be less than 100 times the negative cut resistance. Drive the steady-speed turntable to make the motor of 55~130 frame size run at 1% (rounded) of the maximum linear working speed; the motor of 160~320 frame size runs at 10% (rounded) of the maximum linear working speed. Use an XY function recorder to record the motor output voltage waveform (as shown in Figure 9), read the maximum and minimum output voltage within a week, and calculate the ripple coefficient according to formula 2). The measured data refers to two sets of data in the positive and negative directions. The ripple coefficient should meet the requirements of Article 4.11. Figure 9
Where, K ripple coefficient, %,
U maximum output voltage, V
Umm minimum output voltage, V.
5.12 Linearity error
GB/T 4997—93
Connect the motor to the speed-stabilizing turntable coaxially, clamp the stator, and connect the wires according to Figure 7. The parallel resistance of the load resistance and the internal resistance of the test instrument shall not be less than 100 times the armature resistance. Drive the speed-stabilizing turntable and use a direct-playing digital voltmeter to measure the output voltage at 100%, 80%, 65%, 50%, 40%, 35%, 30%, 20%, and 10% of the motor's maximum linear operating speed (as shown in Figure 10). The linear error is determined by formula (3), and its value shall comply with the provisions of Article 4.12.
U++U,+*+U..+U
+n*+shoot
Where, - linear error, %
U—output voltage at speed crown, V
U, - output voltage at speed n, V
—output voltage at speed, V,
U,—output voltage at maximum linear working speed, V. 5.13 Armature rotation
Mount the motor armature on a connection group with as low inertia as possible (its inertia can be measured or calculated), and the connector and armature should be rigidly connected to a steel wire of at least 3m and suspended (appropriately select the wire diameter so that the steel wire can be straightened after the armature is suspended), so that the armature draw line coincides with the steel wire. The suspension should be protected from air flow and external vibration to prevent perturbation. Twist the connector and armature assembly around the axis, record the time of 10 twists, and calculate the average twist period. Use the same method and the same connector to measure the torsion period of the cylindrical sample rod with known inertia. The armature moment of inertia is calculated by formula (5), and its value should meet the requirements of Article 4.13. (J+J)x
Where J, armature moment of inertia, kg·m
J, sample moment of inertia, kg·m
D-—sample rod diameter, m;
L-sample length, m
(5)
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