A motor assembly parallelism and runout value testing machine

Abstract

The present application relates to a kind of motor assembly parallelism and runout value testing machine, including support frame, support frame is provided with the tool of bearing positioning motor shell, support frame is provided with the first drive mechanism of driving the rotation of inner rotor in motor shell, first drive mechanism is provided with the transmission block of transmission to rotor, transmission block is provided with the self-centering inner support mechanism of centering and inner supporting rotor, support frame is provided with the second drive mechanism of driving transmission block and the abutment of rotor, support frame is also provided with the testing mechanism of testing the parallelism and runout value of rotor, self-centering inner support mechanism is centered to rotor, prevent the eccentricity when first drive mechanism drives rotor to rotate relative to motor shell, avoid parallelism test and runout value test to be influenced, while self-centering inner support mechanism inner supporting rotor shares the force of transmission of transmission block, reduce the pressure of transmission block on the abutment on rotor when rotor rotates, prevent the assembly of rotor and motor shell to have problem.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor testing, in particular to a motor assembly parallelism and run-out value testing machine. BACKGROUND

[0002] In the process of producing motors, the assembled motor assembly needs to be tested, and the parallelism and run-out value of the rotor relative to the motor housing will cause problems such as motor vibration and noise, and even make the motor unable to operate, so the parallelism test and run-out value test of the rotor relative to the motor housing cannot be ignored.

[0003] The existing testing machine tests the parallelism and run-out value of the rotor by pressing the rubber wheel on the rotor, so that the rotor rotates through the friction between the rubber wheel and the rotor, so that the testing mechanism tests the parallelism and run-out value of the rotor relative to the motor housing. The rubber wheel is pressed on the rotor, and under the action of the assembly gap between the rotor and the motor housing, the rotor is easy to be eccentric with the motor housing, which affects the parallelism test and run-out value test. SUMMARY

[0004] In view of the above defects of the prior art, a motor assembly parallelism and run-out value testing machine is provided.

[0005] The technical scheme adopted by the present application to solve its technical problems is: a motor assembly parallelism and run-out value testing machine, comprising a support frame, a jig for supporting and positioning a motor housing is arranged on the support frame, a first driving mechanism for driving a rotor in the motor housing to rotate is arranged on the support frame, a transmission block for transmitting power to the rotor is arranged on the first driving mechanism, a self-centering and inner supporting mechanism for centering and supporting the rotor is arranged on the transmission block, a second driving mechanism for driving the transmission block to abut against the rotor is arranged on the support frame, and a testing mechanism for testing the parallelism and run-out value of the rotor is further arranged on the support frame.

[0006] As a preferred, the self-centering and inner supporting mechanism comprises a rotating shaft and a disc, the rotating shaft is rotatably arranged in the transmission block, the first driving mechanism drives the rotating shaft to rotate, the disc is arranged on the rotating shaft and located in the transmission block, at least three arc grooves are arranged on the disc, the arc grooves are equidistantly arranged along the circumference of the disc, the arc grooves gradually move away from the center of the disc along the same circumference, a circular rod is matched and inserted into each arc groove, a slide rod is connected to each circular rod, the axis of the slide rod is perpendicular to the axis of the circular rod, the slide rod is slidably arranged in the transmission block along the radial direction of the disc, the slide rods are equidistantly arranged along the circumference of the disc, and the slide rods extend outward from the center of the disc.

[0007] As a preferred, a rubber pad is arranged on the end face of the slide rod away from the center of the disc.

[0008] As preferred, the testing mechanism comprises two testing sensors and a reference block for providing a reference surface for the motor housing parallelism test, the reference block is arranged on the support frame at a position right above the jig, the bottom surface of the reference block is the reference surface, the reference block is in a ring structure, the support frame is provided with two opposite moving mounting frames at positions on opposite sides above the reference block, and the two testing sensors are arranged on the two mounting frames correspondingly.

[0009] As preferred, the support frame is provided with a mounting block at a position on each of the opposite sides above the reference block, the mounting block is provided with a sliding groove, the two mounting frames are slidably arranged in the corresponding sliding grooves, and the two mounting blocks are threadedly connected with adjusting screws at the ends away from each other, the adjusting screws are threadedly connected with the corresponding mounting frames.

[0010] As preferred, the first driving mechanism comprises a motor, a transmission shaft and a buffer block, the motor is arranged on the support frame at a position right above the jig, the transmission shaft is arranged on the output shaft of the motor, the buffer block is provided with a groove, the buffer block is slidably arranged on the end of the transmission shaft away from the motor through the groove, a spring is arranged between the groove bottom of the buffer block and the transmission shaft, and the transmission block is arranged on the end of the buffer block away from the motor.

[0011] As preferred, the transmission block is right above the jig, the second driving mechanism is below the jig, the second driving mechanism comprises a driving cylinder and a driving block, the driving cylinder is arranged on the support frame, and the driving block is arranged on the output end of the driving cylinder and connected with the bottom surface of the jig.

[0012] As preferred, the support frame comprises a bottom plate, a top plate and a plurality of guide columns, the guide columns are vertically arranged on the top surface of the bottom plate, the jig is slidably arranged on the guide columns, the top plate is connected with the top ends of the guide columns, the testing mechanism is arranged on the top plate, the first driving mechanism is also arranged on the top plate, and the second driving mechanism is arranged on the bottom plate.

[0013] A motor assembly parallelism and runout value testing method, the method comprises the following steps:

[0014] S101, the motor housing is placed on the jig, the jig positions the motor housing, and the second driving mechanism makes the transmission block abut against the rotor.

[0015] S102, the self-centering inner support mechanism supports the inner wall of the rotor, and in the process of supporting the inner wall of the rotor, the self-centering inner support mechanism makes the rotor concentric with the self-centering inner support mechanism.

[0016] S103, the first driving mechanism drives the rotor to rotate through the transmission block, at this time, the testing mechanism tests the parallelism of the rotor relative to the motor shell, and the testing mechanism also tests the run-out value of the rotor at this time.

[0017] The application has the beneficial effects that: the self-centering inner support mechanism is used to center the rotor, the eccentricity of the rotor relative to the motor shell is prevented when the first driving mechanism drives the rotor to rotate, the parallelism test and the run-out value test are not affected, the self-centering inner support mechanism supports the rotor to share the force transmitted by the transmission block, the pressure of the transmission block abutting on the rotor when the rotor rotates is reduced, the influence of the transmission block pressure on the rotor is reduced, and the assembly problem of the rotor and the motor shell is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic diagram of the embodiment of the application;

[0019] Figure 2 is the enlarged schematic diagram of the A area in the embodiment of the application Figure 1

[0020] Figure 3 is the sectional structure schematic diagram of the A-A direction of the embodiment of the application;

[0021] Figure 4 is the enlarged schematic diagram of the B area in the embodiment of the application Figure 3

[0022] Figure 5 is the structure schematic diagram of the inside of the transmission block in the embodiment of the application.

[0023] Fig. 1 is a support frame, Fig. 10 is a bottom plate, Fig. 11 is a top plate, Fig. 12 is a guide column, Fig. 2 is a jig, Fig. 3 is a first driving mechanism, Fig. 30 is a motor, Fig. 31 is a transmission shaft, Fig. 32 is a buffer block, Fig. 320 is a groove, Fig. 33 is a spring, Fig. 4 is a transmission block, Fig. 5 is a self-centering inner support mechanism, Fig. 50 is a rotating shaft, Fig. 51 is a disc, Fig. 52 is a circular arc groove, Fig. 53 is a circular rod, Fig. 54 is a sliding rod, Fig. 6 is a second driving mechanism, Fig. 60 is a driving cylinder, Fig. 61 is a driving block, Fig. 7 is a testing mechanism, Fig. 70 is a testing sensor, Fig. 71 is a reference block, Fig. 8 is a mounting frame, Fig. 80 is a mounting block, Fig. 81 is a sliding groove, Fig. 82 is an adjusting screw, and Fig. 9 is a rubber pad. DETAILED DESCRIPTION

[0024] ​​To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention. In addition, the directional terms mentioned in the present invention, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying illustrations. The use of directional terms is for better and clearer explanation and understanding of the present invention, and is not intended to indicate or imply any necessary orientation of the present invention, and therefore should not be construed as a limitation of the present invention.

[0025] Examples of embodiments of the present invention Figures 1 to 5 As shown, a motor assembly parallelism and runout testing machine includes a support frame 1. A fixture 2 for supporting and positioning the motor housing is mounted on the support frame 1. A first drive mechanism 3 for driving the rotor inside the motor housing is mounted on the support frame 1. A transmission block 4 for transmitting power to the rotor is mounted on the first drive mechanism 3, i.e., the first drive mechanism 3 drives the rotor inside the motor housing to rotate via the transmission block 4. A self-centering internal support mechanism 5 for centering and internally supporting the rotor is mounted on the transmission block 4. A second drive mechanism 6 is mounted on the support frame 1 to drive the transmission block 4 to abut against the rotor. The friction generated by the pressure of the transmission block 4 against the rotor causes the first drive mechanism 3, in conjunction with the transmission block 4, to drive the rotor to rotate. A testing mechanism 7 for testing the parallelism and runout value of the rotor is also mounted on the support frame 1. The device 1 includes a base plate 10, a top plate 11, and multiple guide posts 12. Preferably, four guide posts 12 are provided, which are vertically arranged on the top surface of the base plate 10 in a rectangular pattern. The fixture 2 is slidably mounted on the four guide posts 12. The fixture 2 has four through holes, and each through hole contains a guide sleeve. The fixture 2 is slidably mounted on the guide posts 12 through the guide sleeves. The top plate 11 is connected to the top of the four guide posts 12. The testing mechanism 7 is mounted on the top plate 11. The first driving mechanism 3 is also mounted on the top plate 11. The second driving mechanism 6 is mounted on the base plate 10. The second driving mechanism 6 drives the fixture 2 to slide on the guide posts 12, thereby allowing the rotor inside the motor housing on the fixture 2 to abut against the transmission block 4 on the first driving mechanism 3.

[0026] Further improvements, such as Figures 3 to 5As shown in the figure, the self-centering inner support mechanism 5 comprises a rotating shaft 50 and a disc 51, the rotating shaft 50 is rotatably arranged in the transmission block 4, the first driving mechanism 3 drives the rotating shaft 50 to rotate, the disc 51 is arranged on the rotating shaft 50 and located in the transmission block 4, the disc 51 is provided with at least three arc grooves 52, preferably four arc grooves 52, the four arc grooves 52 are arranged equidistantly along the circumference of the disc 51, the four arc grooves 52 gradually move away from the center of the disc 51 along the same circumference, a round rod 53 is matched and inserted into each arc groove 52, the round rod 53 slides in the corresponding arc groove 52, each round rod 53 is connected with a slide rod 54, the axis of the slide rod 54 is perpendicular to the axis of the round rod 53, the slide rod 54 is arranged in the transmission block 4 and slides along the radial direction of the disc 51, the four slide rods 54 are arranged equidistantly along the circumference of the disc 51, the four slide rods 54 extend outward from the center of the disc 51, at this time, the transmission block 4 is rotatably connected to the first driving mechanism 3, the rotating shaft 50 penetrates through the transmission block 4 and is connected to the first driving mechanism 3, the end surface of the slide rod 54 away from the center of the disc 51 is provided with a rubber pad 9, the rotating shaft 50 is driven to rotate by the first driving mechanism 3, thereby driving the disc 51 to rotate, the disc 51 drives the corresponding four slide rods 54 to slide synchronously outward of the transmission block 4 through the four round rods 53, the four slide rods 54 slide out of the outer wall of the transmission block 4 and abut against the inner wall of the rotor, at this time, the self-centering inner support mechanism 5 centers the rotor through the synchronous sliding of the slide rods 54, prevents the rotor from being eccentric when the first driving mechanism 3 drives the rotor to rotate relative to the motor shell, at the same time, the self-centering inner support mechanism 5 supports the rotor through the slide rods 54, thereby sharing the force transmitted by the transmission block 4 through the friction between the slide rods 54 and the inner wall of the rotor, reducing the pressure of the transmission block 4 abutting on the rotor when the rotor rotates, reducing the influence of the transmission block pressure on the rotor, and preventing the slide rods 54 from pressing or scratching the rotor through the rubber pad 9.

[0027] Further improvements, such as Figures 1 to 3As shown in the figure, the testing mechanism 7 comprises two testing sensors 70 and a reference block 71 providing a reference surface for the motor housing parallelism test, the reference block 71 is arranged on the support frame 1 above the jig 2, the bottom surface of the reference block 71 is the reference surface, the reference block 71 is annular structure, preferably, the reference block 71 is circular annular structure, the support frame 1 is provided with two opposite moving mounting frames 8 at positions above the reference block 71 on opposite sides, two testing sensors 70 are arranged on the two mounting frames 8 correspondingly, the testing sensor 70 is a laser sensor, the top plate 11 of the support frame 1 is provided with a laser-avoiding through hole for avoiding the laser of the laser sensor, the support frame 1 is provided with a mounting block 80 at positions above the reference block 71 on opposite sides, the mounting block 80 is located on the left and right sides of the top plate 11, the mounting block 80 is provided with a sliding groove 81, the sliding groove 81 extends in the left-right direction, the left end of the right sliding groove 81 is an opening, and the right end of the left sliding groove 81 is an opening, the two mounting frames 8 slide in the corresponding sliding grooves 81, the two mounting blocks 8 are both screw-connected with an adjusting screw 82 at the ends away from each other, that is, the left side wall of the left mounting block 80 is screw-connected with the adjusting screw 82, and the right side wall of the right mounting block 80 is screw-connected with the adjusting screw 82, the adjusting screw 82 penetrates into the sliding groove 81 and is rotationally connected with the corresponding mounting frame 8, the mounting frame 8 moves left and right in the corresponding sliding groove 81 by rotating the adjusting screw 82, so as to adjust the position of the testing sensor 70, so as to test different specifications of motor assemblies.

[0028] Further improvements, such as Figure 1 、 Figure 3 and Figure 4As shown in the first drive mechanism 3, the motor 30 is provided on the support frame 1 above the jig 2, the transmission shaft 31 is provided on the output shaft of the motor 30, the transmission shaft 31 is connected with the output shaft of the motor 30 through the shaft coupling, the buffer block 32 is provided with a groove 320, the buffer block 32 is a cylindrical structure, the groove 320 is located at the top end of the buffer block 32, the buffer block 32 is slidably sleeved on the end of the transmission shaft 31 away from the motor 30 through the groove 320, it should be noted that the buffer block 32 and the transmission shaft 31 are provided with a limiting mechanism for preventing the buffer block 32 from slipping off the transmission shaft 31, for example, the limiting mechanism includes a limiting groove and a limiting block, the limiting groove is provided on the inner side wall of the groove 320 of the buffer block 32, the limiting groove extends in the up-down direction, the limiting block is provided on the outer side wall of the transmission shaft 31, the limiting block slides in the limiting groove, the groove 320 of the buffer block 32 and the transmission shaft 31 are provided with a spring 33, the transmission block 4 is provided on the end of the buffer block 32 away from the motor, at this time the transmission block 4 is rotatably connected to the buffer block 32, when the second drive mechanism 6 drives the transmission block 4 to abut against the rotor, the transmission block 4 is buffered by the buffer block 32 and the spring 33, preventing the rotor from being deformed by the pressure of the transmission block 4.

[0029] Further improvements, as shown in Figure 1 and Figure 3 The transmission block 4 is located above the jig 2, the second drive mechanism 6 is located below the jig 2, the second drive mechanism 6 includes a drive cylinder 60 and a drive block 61, the drive cylinder 60 is provided on the support frame 1, the drive cylinder 60 is provided on the bottom surface of the bottom plate 10 of the support frame 1, the output end of the drive cylinder 60 penetrates the top surface of the bottom plate 10, the drive block 61 is provided on the output end of the drive cylinder 60, the drive block 61 is also connected with the bottom surface of the jig 2, the drive cylinder 60 drives the jig 2 to slide up and down through the drive block 61.

[0030] A motor assembly parallelism and runout value testing method, the method comprises the following steps:

[0031] S101, the motor housing is placed on the jig 2, the jig 2 positions the motor housing, the second drive mechanism 6 makes the transmission block 4 abut against the rotor.

[0032] S102, the inner wall of the self-centering inner support mechanism 5 supports the rotor, in the process of supporting the inner wall of the rotor, the self-centering inner support mechanism 5 makes the rotor concentric with the self-centering inner support mechanism 5, that is, the rotor is centered.

[0033] S103, the first drive mechanism 3 drives the rotor to rotate through the transmission block 4, at this time the testing mechanism 7 tests the parallelism of the rotor relative to the motor housing, and the testing mechanism 7 also tests the runout value of the rotor.

[0034] It is to be understood that the above description is intended to be illustrative and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. The scope of the application should, therefore, be determined not with reference to the above description, but instead with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A test machine for the parallelism and runout of a motor assembly, comprising a support frame; characterized in that, The support frame is equipped with a fixture for supporting and positioning the motor housing; the support frame is equipped with a first drive mechanism for driving the rotor inside the motor housing to rotate; the first drive mechanism is equipped with a transmission block for transmitting power to the rotor; the transmission block is equipped with a self-centering internal support mechanism for centering and internally supporting the rotor; the support frame is equipped with a second drive mechanism for driving the transmission block to abut against the rotor; the support frame is also equipped with a test mechanism for testing the rotor parallelism and runout value, the self-centering internal support mechanism includes a rotating shaft and a disk; the rotating shaft is rotatably disposed within the transmission block; the first drive mechanism drives the rotating shaft to rotate; the disk is disposed on the rotating shaft and located within the transmission block; the disk is provided with at least three arc grooves; the plurality of arc grooves are arranged at equal intervals along the circumference of the disk; the plurality of arc grooves are arranged at at least three arc grooves. The arc grooves gradually move away from the center of the disk along the same circumference; a round rod is inserted into each of the arc grooves; each round rod is connected to a sliding rod; the axis of the sliding rod is perpendicular to the axis of the round rod; the sliding rod is slidably disposed within the transmission block along the radial direction of the disk; multiple sliding rods are arranged at equal intervals along the circumference of the disk; multiple sliding rods extend outward from the center of the disk; the first drive mechanism includes a motor, a transmission shaft, and a buffer block; the motor is disposed on the support frame at a position directly above the fixture; the rotating shaft is disposed on the output shaft of the motor; the buffer block is provided with a groove; the buffer block is slidably sleeved on the end of the rotating shaft away from the motor through the groove; a spring is disposed between the bottom of the groove of the buffer block and the rotating shaft; the transmission block is disposed at the end of the buffer block away from the motor.

2. The motor assembly parallelism and runout testing machine according to claim 1, characterized in that, A rubber pad is provided on the end face of the slide bar away from the center of the disk.

3. The motor assembly parallelism and runout testing machine according to claim 1, characterized in that, The testing mechanism includes two test sensors and a reference block that provides a reference surface for testing the parallelism of the motor housing; the reference block is set on the support frame at a position directly above the fixture; the bottom surface of the reference block is the reference surface; the reference block has a ring structure; the support frame has two relatively movable mounting brackets located on opposite sides above the reference block; the two test sensors are correspondingly set on the two mounting brackets.

4. A test machine for parallelism and runout of a motor assembly according to claim 3, characterized in that, The support frame has mounting blocks on opposite sides above the reference block; each mounting block has a sliding groove; the two mounting frames slide in the corresponding sliding grooves; each of the two mounting blocks has an adjusting screw threaded to its opposite end; the adjusting screw passes through the sliding groove and is rotatably connected to the corresponding mounting frame.

5. A test machine for the parallelism and runout of a motor assembly according to claim 1, characterized in that, The transmission block is located directly above the fixture; the second drive mechanism is located below the fixture; the second drive mechanism includes a drive cylinder and a drive block; the drive cylinder is mounted on a support frame; the drive block is mounted on the output end of the drive cylinder; the drive block is also connected to the bottom surface of the fixture.

6. A test machine for parallelism and runout of a motor assembly according to claim 1, characterized in that, The support frame includes a base plate, a top plate, and multiple guide columns; the multiple guide columns are vertically arranged on the top surface of the base plate; the fixture is slidably mounted on the multiple guide columns; the top plate is connected to the top of the multiple guide columns; the testing mechanism is mounted on the top plate; the first driving mechanism is also mounted on the top plate; the second driving mechanism is mounted on the base plate; the second driving mechanism drives the fixture to slide on the guide columns.

7. A method for testing the parallelism and runout of a motor assembly, based on the motor assembly parallelism and runout testing machine according to any one of claims 1-6, characterized in that, The method includes the following steps: S101, the motor housing is placed on the fixture, the fixture positions the motor housing, and the second drive mechanism causes the transmission block to abut against the rotor; S102, the self-centering inner support mechanism supports the inner wall of the rotor. During the process of supporting the inner wall of the rotor, the self-centering inner support mechanism makes the rotor concentric with the self-centering inner support mechanism. S103, the first drive mechanism drives the rotor to rotate through the transmission block. At this time, the test mechanism tests the parallelism of the rotor relative to the motor housing. The test mechanism also tests the runout value of the rotor.

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