An automatic testing device for a micro-motor and its testing method

Abstract

The present invention discloses a micro-motor automatic testing device and a testing method thereof, including a supporting bracket and a transposition bracket. The transposition bracket is slidably arranged above the supporting bracket. Two groups of testing brackets are fixedly arranged side by side on the front and rear sides of the top of the transposition bracket. Intermediate brackets are horizontally slidably arranged on the tops of the two groups of testing brackets, and a workbench is arranged on the top of the intermediate bracket. The supporting bracket includes two laterally arranged sliding frames, and the sliding frame is a C-shaped frame body with an upward opening. The beneficial effects are as follows: By arranging a slidable transposition bracket in the front and rear directions above the supporting bracket for supporting the motor during testing, and arranging two groups of testing brackets longitudinally on the top of the transposition bracket, the motor is supported by the workbench on the top side of the testing bracket for testing. The two workbenches are used as a testing structure with one in use and one in reserve. During the testing of the motor above one of the workbenches, the motor above the other workbench can be disassembled and assembled without stopping the detection action after the testing of one group of motors is completed, and continuous detection can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of motor testing equipment, and particularly to a micro-motor automatic testing device and a testing method thereof. Background Art

[0002] Motor testing is to use instruments, meters and related equipment to test the electrical performance, mechanical performance, safety performance and reliability and other technical indicators of semi-finished products and finished products in the motor manufacturing process, or supporting products with the motor as the main body according to relevant regulations. Through these tests, all or part of the relevant performance data of the tested motor can be reflected. With these data, it can be judged whether the tested motor meets the design requirements, the quality is good or bad, and the goals and directions for improvement. Motor testing and detection are important indispensable links in the process of motor research, production and maintenance.

[0003] The applicant of the present invention has found that there are at least the following technical problems in the prior art: Most of the existing motor testing equipment is a self-made test stand. After fixing the motor on the self-made test stand with bolts, connecting the motor leads and starting the motor, a digital tachometer is used to test the no-load speed of the motor, and the no-load characteristics and running smoothness are manually checked. However, during the inspection of multiple motor workpieces, disassembling and assembling the motor requires stopping the test process, which consumes a lot of time and is inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a micro-motor automatic testing device and a testing method thereof to solve the above problems. A transposition frame that can slide back and forth is arranged above the support bracket for supporting the motor for testing, and two groups of test stands are longitudinally arranged on the top of the transposition frame. The motor is supported by the workbench on the top side of the test stand for testing. The two workbenches are used as a one-open-one-backup test structure. During the motor testing process above one of the workbenches, the motor above the other workbench is disassembled and assembled, without stopping the detection action after one group of motor tests are completed, and continuous detection can be realized; and a coarse adjustment rod is provided to cooperate with the coarse adjustment hole to realize the rapid coarse adjustment process of the horizontal position of the intermediate frame and the workbench. Using this coarse adjustment structure, the workbench is roughly moved to near the set position, and then the workbench is slowly and accurately horizontally moved to the set position along the sliding groove by rotating the screw rod using the external thread. The adjustment speed is faster, it is more convenient to use, and it is suitable for fixing and testing multiple groups of motors with different sizes, and has strong practicability. See the following for details.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A micro-motor automatic testing device provided by the present invention includes a support bracket and a transposition frame. The transposition frame is slidably arranged above the support bracket. Two groups of test stands are fixedly arranged side by side on the front and rear sides of the top of the transposition frame. Intermediate frames are horizontally slidably arranged on the tops of the two groups of test stands, and a workbench is arranged on the top of the intermediate frame;

[0007] The supporting bracket includes two sets of sliding frames arranged horizontally. The sliding frame is a C-shaped frame body with an upward opening, and the sliding frame extends longitudinally. Two sets of connecting rods are fixed on the opposite sides of the two sets of sliding frames, and the two sets of sliding frames are connected by the connecting rods. The transposition frame includes a sliding bar that longitudinally penetrates inside the sliding frame and is slidably matched with the sliding frame.

[0008] Preferably, the sliding bar is a T-shaped long bar structure that fits the sliding frame. Fixed ears are provided at the front and rear parts on the outer sides of the two sets of sliding frames. The bottom side of the fixed ear is flush with the bottom edge of the sliding frame, and a screw hole vertically penetrates through the middle of the fixed ear.

[0009] Preferably, the test frame includes a receiving frame. The receiving frame is a C-shaped frame body with an upward opening. Four sets of disassembly and assembly ears are fixed at the four corners of the bottom side of the receiving frame. Multiple disassembly and assembly bolts are distributed along the length direction of the sliding bar in a threaded fit. The disassembly and assembly bolts vertically penetrate the disassembly and assembly ears and are in clearance fit with the disassembly and assembly ears.

[0010] Preferably, two rectangular sliding holes horizontally penetrate through both ends of the receiving frame, and multiple coarse adjustment holes are vertically penetrated through the inner bottom of the receiving frame and are evenly distributed horizontally. The intermediate frame includes a C-shaped inner frame with an upward opening. The inner frame is arranged inside the receiving frame, and two sliding rods horizontally penetrating through the sliding holes are fixed on both sides of the inner frame. The sliding rod is a rectangular long bar structure that is slidably matched with the sliding hole.

[0011] Preferably, a U-shaped coarse adjustment rod with a downward opening is arranged inside the inner frame. Both ends of the coarse adjustment rod vertically penetrate through the inner frame, and the coarse adjustment rod is in clearance fit with the inner frame. The bottom end of the coarse adjustment rod penetrates into the coarse adjustment hole, and the coarse adjustment rod is in clearance fit with the coarse adjustment hole. A retaining ring is fixed on the outer side of the end of the coarse adjustment rod below the inner frame, and a spring is sleeved on the outer side of the coarse adjustment rod between the retaining ring and the inner frame.

[0012] Preferably, the compression stroke of the spring is greater than the length of the end of the coarse adjustment rod penetrating into the coarse adjustment hole. Two sliding grooves for accommodating the workbench are arranged on both sides of the top of the inner frame. The sliding groove is a through groove structure that horizontally penetrates.

[0013] Preferably, the workbench is a T-shaped plate-like structure that is slidably matched with the sliding groove. A screw rod horizontally penetrates through the middle of the workbench. Both ends of the sliding rod are bent upward to form rotating seats. The two ends of the screw rod horizontally penetrate through the two sets of rotating seats respectively, and the screw rod is rotationally matched with the sliding rod through the rotating seats.

[0014] Preferably, external threads are provided on the outer side of the middle part of the screw rod. The screw rod is in threaded fit with the workbench through the external threads. On one side of the top of the workbench, two groups of vertically penetrating fixing screw holes are symmetrically arranged in the front and back, and on the other side of the top of the workbench, two groups of waist-shaped expansion holes are symmetrically arranged in the front and back.

[0015] Preferably, a rectangular frame-shaped enclosing frame is fixed on the top of the workbench. The expansion holes and the fixing screw holes are both arranged on the top of the workbench inside the enclosing frame. The front and back ends of the two groups of slide bars are symmetrically connected with two groups of C-shaped fixing rods with opposite openings.

[0016] The testing method of the micro motor automatic testing device includes the following steps:

[0017] a. When the motor needs to be tested, place the motor on the top surface of the workbench. Insert bolts into the fixing holes of the motor base to fix it in the fixing screw holes and the expansion holes, so as to fix the motor on the surface of the workbench. When the position of the motor needs to be adjusted to meet the testing requirements, lift the coarse adjustment rod upwards so that its end disengages from the coarse adjustment hole of the accommodating frame. At this time, the locking state between the testing frame and the middle frame is released. Then, support the middle frame as a whole to slide horizontally through the accommodating frame, and use the distance between adjacent coarse adjustment holes as the minimum adjustment unit to adjust the horizontal position of the middle frame, realizing the coarse adjustment process of the horizontal positions of the middle frame and the workbench;

[0018] b. After the coarse adjustment process of the horizontal positions of the workbench and the motor to be detected on its top side is completed, push the end of the coarse adjustment rod again into the corresponding coarse adjustment hole by the spring in the compressed state to fix the positions of the testing frame and the middle frame again;

[0019] c. When the horizontal positions of the workbench and the motor on its top side need to be finely adjusted, rotate the screw rod under the support of the slide rod, and use the threaded fit between the external threads on the outer side of the screw rod and the workbench to drive the workbench to slide horizontally under the guidance of the chute, and then finely adjust the horizontal positions of the workbench and the motor on its top side slowly. Thus, through the cooperation of rapid coarse adjustment and slow fine adjustment, the convenience of moving the workbench and the motor on its top side to the testing position is improved;

[0020] d. Support the two groups of workbenches above through the two groups of testing frames. Ensure that when the motor above one group of workbenches is in the testing state, the installation and disassembly of the motor can be carried out above the other group of workbenches. Slide the slide bars of the transposition frame back and forth through the slide frames of the supporting brackets to replace the positions of the two groups of testing frames and the two groups of workbenches, improving the influence of the motor disassembly process on the testing work when there is only one group of testing stations, thereby improving the motor testing efficiency.

[0021] The beneficial effects are as follows: In the present invention, a sliding transposition frame is arranged above the supporting bracket for testing the motor, and two groups of test frames are longitudinally arranged on the top of the transposition frame. The motor is supported by the workbench on the top side of the test frame for testing. The two workbenches are used as a test structure with one in use and one in reserve. During the testing of the motor above one workbench, the motor above the other workbench can be disassembled and assembled without stopping the detection action after the testing of one group of motors is completed, enabling continuous detection.

[0022] A coarse adjustment rod is provided to cooperate with the coarse adjustment hole to achieve a rapid coarse adjustment process for the lateral position of the intermediate frame and the workbench. Using this coarse adjustment structure, the workbench is roughly moved near the set position, and then the workbench is slowly and precisely transversely moved to the set position along the sliding groove by rotating the screw rod using the external thread. The adjustment speed is faster, it is more convenient to use, and it is suitable for fixing and testing multiple groups of motors with different sizes, with strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is the front view structure diagram of the present invention;

[0025] Figure 2 is the three-dimensional structure schematic diagram of the present invention;

[0026] Figure 3 is the structure splitting schematic diagram of the present invention;

[0027] Figure 4 is the three-dimensional structure schematic diagram of the supporting bracket of the present invention;

[0028] Figure 5 is the three-dimensional structure schematic diagram of the transposition frame of the present invention;

[0029] Figure 6 is the structure splitting schematic diagram of the workbench and the intermediate frame of the present invention;

[0030] Figure 7 is the top view structure diagram of the present invention.

[0031] The description of the reference numerals in the drawings is as follows:

[0032] 1. Bracket; 101. Slide frame; 102. Connecting rod; 103. Fixed ear; 2. Transposition frame; 201. Slide bar; 201a. Disassembly and assembly bolt; 202. Fixed rod; 3. Test frame; 301. Accommodating frame; 301a. Slide hole; 302. Coarse adjustment hole; 303. Disassembly and assembly ear; 4. Intermediate frame; 401. Inner frame; 401a. Slide groove; 402. Slide rod; 402a. Threaded hole; 403. Coarse adjustment rod; 404. Retaining ring; 405. Spring; 5. Workbench; 501. Fixed screw hole; 502. Expansion hole; 503. Enclosure frame; 6. Screw; 601. External thread; 602. Knob. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope protected by the present invention.

[0034] See Figures 1-7 As shown in the figure, the present invention provides a micro motor automatic test device, including a bracket 1 and a transposition frame 2. The transposition frame 2 is slidably arranged above the bracket 1. Two groups of test frames 3 are fixedly arranged side by side at the front and rear sides of the top of the transposition frame 2. An intermediate frame 4 is horizontally slidably arranged at the top of each of the two groups of test frames 3. A workbench 5 is arranged at the top of the intermediate frame 4. The workbench 5 is used to fix the motor and assist the staff to perform rotation tests on the energized motor.

[0035] The bracket 1 includes two groups of horizontally arranged slide frames 101. The slide frame 101 is a C-shaped frame body with an upward opening. The slide frame 101 extends longitudinally. Two groups of connecting rods 102 are fixed on the opposite sides of the two groups of slide frames 101. The two groups of slide frames 101 are connected by the connecting rods 102. The transposition frame 2 includes a slide bar 201 longitudinally inserted into the inside of the slide frame 101 and slidably matched with the slide frame 101. Further, the slide bar 201 is a T-shaped long bar structure matching the slide frame 101. Fixed ears 103 are arranged at the front, rear, left and right sides of the outer sides of the two groups of slide frames 101. The bottom side of the fixed ear 103 is flush with the bottom edge of the slide frame 101, and a screw hole is vertically penetrated through the middle of the fixed ear 103.

[0036] As an alternative embodiment, the test rack 3 includes a receiving frame 301. The receiving frame 301 is a C-shaped frame body with an upward opening. Four groups of disassembly and assembly ears 303 are fixed at the four corners of the bottom side of the receiving frame 301. A plurality of disassembly and assembly bolts 201a distributed along its length direction are in threaded fit with the top of the slide bar 201. The disassembly and assembly bolts 201a vertically penetrate through the disassembly and assembly ears 303 and are in clearance fit with the disassembly and assembly ears 303. Thus, the receiving frame 301 is fixed to the top side of the slide bar 201 through the disassembly and assembly bolts 201a. Two rectangular sliding holes 301a penetrate horizontally through both ends of the receiving frame 301. A plurality of coarsely adjusting holes 302 uniformly distributed horizontally are vertically penetrated through the inner bottom of the receiving frame 301. The intermediate frame 4 includes an inner frame 401 in the shape of an upward-opening C-shaped frame. The inner frame 401 is arranged inside the receiving frame 301, and two slide bars 402 horizontally penetrating through the sliding holes 301a are fixed on both sides of the inner frame 401. The slide bars 402 are rectangular strip structures slidably fitted with the sliding holes 301a;

[0037] An upward-opening U-shaped coarsely adjusting rod 403 is arranged inside the inner frame 401. Both ends of the coarsely adjusting rod 403 vertically penetrate through the inner frame 401, and the coarsely adjusting rod 403 is in clearance fit with the inner frame 401. The bottom end of the coarsely adjusting rod 403 penetrates into the coarsely adjusting hole 302, and the coarsely adjusting rod 403 is in clearance fit with the coarsely adjusting hole 302. A retaining ring 404 is fixed on the outer side of the end of the coarsely adjusting rod 403 below the inner frame 401. A spring 405 is sleeved on the outer side of the coarsely adjusting rod 403 between the retaining ring 404 and the inner frame 401. The compression stroke of the spring 405 is greater than the length of the end of the coarsely adjusting rod 403 penetrating into the coarsely adjusting hole 302, ensuring that the end of the coarsely adjusting rod 403 can be disengaged from the coarsely adjusting hole 302 when the coarsely adjusting rod 403 is lifted upward. Two chutes 401a for accommodating the workbench 5 are arranged on both sides of the top of the inner frame 401. The chutes 401a are through groove structures penetrating horizontally;

[0038] The workbench 5 is a T-shaped plate-like structure slidably fitted with the chutes 401a. A screw rod 6 horizontally penetrates through the middle of the workbench 5. Both ends of the slide bar 402 are bent upward to form rotating seats. The two ends of the screw rod 6 horizontally penetrate through the two rotating seats respectively, and the screw rod 6 is rotationally fitted with the slide bar 402 through the rotating seats. An external thread 601 is arranged on the outer side of the middle of the screw rod 6. The screw rod 6 is in threaded fit with the workbench 5 through the external thread 601. Two vertically penetrating fixing screw holes 501 are symmetrically arranged in the front and back on one side of the top of the workbench 5, and two waist-shaped expansion holes 502 are symmetrically arranged in the front and back on the other side of the top of the workbench 5. A rectangular frame-shaped enclosure frame 503 is fixed on the top of the workbench 5. The expansion holes 502 and the fixing screw holes 501 are both arranged on the top of the workbench 5 inside the enclosure frame 503. Two C-shaped fixing rods 202 with opposite openings are symmetrically connected to the front and back ends of the two slide bars 201, facilitating the staff to grab the fixing rods 202 to pull the slide bar 201 to slide back and forth inside the supporting frame 1.

[0039] The test method of the micro motor automatic test device includes the following steps:

[0040] a. When the motor needs to be tested, place the motor on the top surface of the workbench 5. Insert bolts through the fixing holes of the motor base and fix it in the fixing screw holes 501 and the expansion holes 502, so as to fix the motor on the surface of the workbench 5. When it is necessary to adjust the position of the motor to meet the test requirements, lift the coarse adjustment rod 403 upward so that its end disengages from the coarse adjustment hole 302 of the accommodation frame 301. At this time, the locking state between the test frame 3 and the intermediate frame 4 is released. Then, support the overall lateral sliding of the intermediate frame 4 through the accommodation frame 301, and use the spacing between adjacent coarse adjustment holes 302 as the minimum adjustment unit to adjust the lateral position of the intermediate frame 4, realizing the coarse adjustment process of the lateral positions of the intermediate frame 4 and the workbench 5;

[0041] b. After the coarse adjustment process of the lateral positions of the workbench 5 and the motor to be detected on its top side is completed, the end of the coarse adjustment rod 403 is pushed by the spring 405 in the compressed state and is inserted into the coarse adjustment hole 302 corresponding to this position again to fix the positions of the test frame 3 and the intermediate frame 4 again;

[0042] c. When it is necessary to finely adjust the lateral positions of the workbench 5 and the motor on its top side, rotate the screw rod 6 under the support of the sliding rod 402. Utilize the thread matching effect between the external thread 601 on the outer side of the screw rod 6 and the workbench 5 to drive the workbench 5 to slide laterally under the guidance of the sliding groove 401a, and then finely adjust the lateral positions of the workbench 5 and the motor on its top side slowly. Thus, through the cooperation of rapid coarse adjustment and slow fine adjustment, the convenience of moving the workbench 5 and the motor on its top side to the test position is improved;

[0043] d. Support the upper two groups of workbenches 5 through two groups of test frames 3. Ensure that when the motor above one group of workbenches 5 is in the test state, the installation and disassembly of the motor above the other group of workbenches 5 can be carried out. Support the sliding bar 201 of the position replacement frame 2 to slide back and forth through the sliding frame 101 of the supporting bracket 1 to replace the positions of the two groups of test frames 3 and the two groups of workbenches 5, improving the influence of the motor disassembly process on the test work when there is only one group of test stations, thereby improving the motor test efficiency.

[0044] By setting a position replacement frame 2 that can slide back and forth above the supporting bracket 1 for supporting the motor to be tested, and longitudinally arranging two groups of test frames 3 on the top of the position replacement frame 2, and supporting the motor for testing through the workbench 5 on the top side of the test frame 3, using the two groups of workbenches 5 as a test structure with one for use and one for standby, during the testing process of the motor above one group of workbenches 5, the disassembly and assembly of the motor above the other group of workbenches 5 can be carried out, without stopping the detection action after one group of motor tests is completed, and continuous detection can be realized;

[0045] The coarse adjustment lever 403 is provided to cooperate with the coarse adjustment hole 302 to achieve the rapid coarse adjustment process of the horizontal positions of the middle frame 4 and the workbench 5. The workbench 5 is roughly moved to the vicinity of the set position by using this coarse adjustment structure. Then, by rotating the screw rod 6, the workbench 5 is driven to slowly and accurately move horizontally along the sliding groove 401a to the set position. The adjustment speed is faster, it is more convenient to use, and it is applicable to fixing and testing multiple groups of motors with different sizes, and has strong practicability.

[0046] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A micro-motor automatic testing device, characterized in that: it includes a supporting bracket (1) and a position-changing bracket (2), the position-changing bracket (2) is slidably arranged above the supporting bracket (1), two groups of testing brackets (3) are fixedly arranged in parallel on the front and rear sides of the top of the position-changing bracket (2), an intermediate bracket (4) is slidably arranged horizontally on the top of each of the two groups of testing brackets (3), and a workbench (5) is arranged on the top of the intermediate bracket (4); the supporting bracket (1) includes two groups of horizontally arranged sliding frames (101), the sliding frame (101) is a C-shaped frame body with an upward opening, the sliding frame (101) extends longitudinally, two groups of connecting rods (102) are fixed on the opposite sides of the two groups of sliding frames (101), the two groups of sliding frames (101) are connected by the connecting rods (102), and the position-changing bracket (2) includes a sliding strip (201) longitudinally penetrating into the inside of the sliding frame (101) and slidably matched with the sliding frame (101); the testing bracket (3) includes a receiving frame (301), the receiving frame (301) is a C-shaped frame body with an upward opening, four groups of disassembly and assembly ears (303) are fixed at the four corners of the bottom side of the receiving frame (301), a plurality of disassembly and assembly bolts (201a) distributed along its length direction are in threaded cooperation with the top of the sliding strip (201), the disassembly and assembly bolts (201a) vertically penetrate through the disassembly and assembly ears (303) and are in clearance fit with the disassembly and assembly ears (303); two groups of rectangular sliding holes (301a) penetrate horizontally through both ends of the receiving frame (301), a plurality of coarsely adjusting holes (302) uniformly distributed horizontally are vertically penetrated through the inner bottom of the receiving frame (301), the intermediate bracket (4) includes a C-shaped frame-shaped inner frame (401) with an upward opening, the inner frame (401) is arranged inside the receiving frame (301), and two groups of sliding rods (402) horizontally penetrating through the sliding holes (301a) are fixed on both sides of the inner frame (401), and the sliding rods (402) are rectangular strip structures slidably matched with the sliding holes (301a); A U-shaped coarse adjustment rod (403) with an opening facing downward is arranged inside the inner frame (401); both ends of the coarse adjustment rod (403) vertically penetrate the inner frame (401); the coarse adjustment rod (403) and the inner frame (401) are clearance-matched; the bottom end of the coarse adjustment rod (403) penetrates into the coarse adjustment hole (302); the coarse adjustment rod (403) and the coarse adjustment hole (302) are clearance-matched; a retaining ring (404) is fixed to the outer side of the end of the coarse adjustment rod (403) below the inner frame (401). A spring (405) is sleeved on the outer side of the coarse adjustment rod (403) between the retaining ring (404) and the inner frame (401); the compression stroke of the spring (405) is greater than the length of the end of the coarse adjustment rod (403) inserted into the coarse adjustment hole (302); two groups of slide grooves (401a) for accommodating a workbench (5) are arranged on both sides of the top of the inner frame (401); the slide grooves (401a) are transversely penetrating through groove structures; the workbench (5) is a slide groove (401a) that slidably matches the slide grooves (401a). The workbench (5) has a T-shaped plate structure, wherein a screw rod (6) is passed through the middle of the workbench (5) transversely, and both ends of the slide rod (402) are bent upward to form a rotating seat, and both ends of the screw rod (6) are passed through two sets of rotating seats transversely, and the screw rod (6) is rotatably matched with the slide rod (402) through the rotating seat; an external thread (601) is provided on the outer side of the middle of the screw rod (6), and the screw rod (6) is threadably matched with the workbench (5) through the external thread (601), and one side of the top of the workbench (5) is symmetrical front to back. Two groups of vertically penetrating fixing screw holes (501) are provided, and two groups of waist-shaped hole-shaped expansion holes (502) are symmetrically provided on the other side of the top of the workbench (5); a rectangular frame-shaped enclosure frame (503) is fixed on the top of the workbench (5), and the expansion holes (502) and the fixing screw holes (501) are both provided on the top of the workbench (5) inside the enclosure frame (503); and two groups of C-shaped fixing rods (202) with openings facing each other are symmetrically connected at the front and rear ends of the two groups of sliding bars (201).

2. According to the micro motor automatic testing device described in claim 1, Features: The slide bar (201) is a T-shaped long strip structure that matches the slide frame (101), and the front and rear parts of the outer sides of the two groups of slide frames (101) are both provided with fixing ears (103), the bottom side of the fixing ears (103) is flush with the bottom edge of the slide frame (101), and a screw hole is vertically penetrated in the middle of the fixing ears (103).

3. The testing method of the micro motor automatic testing device according to claim 2, It is characterized in that The following steps are involved: a. When the motor needs to be tested, place the motor on the top surface of the workbench (5). Insert bolts through the fixing holes of the motor base and fix it in the fixing screw holes (501) and the expansion holes (502), so as to fix the motor on the surface of the workbench (5). When it is necessary to adjust the position of the motor to meet the test requirements, lift the coarse adjustment rod (403) upward so that its end disengages from the coarse adjustment hole (302) of the accommodation frame (301). At this time, the locking state of the test frame (3) and the intermediate frame (4) is released. Then, support the overall lateral sliding of the intermediate frame (4) through the accommodation frame (301), and use the spacing between adjacent coarse adjustment holes (302) as the minimum adjustment unit to adjust the lateral position of the intermediate frame (4), realizing the coarse adjustment process of the lateral positions of the intermediate frame (4) and the workbench (5). b. After the coarse adjustment process of the lateral positions of the workbench (5) and the motor to be detected on its top side is completed, push the end of the coarse adjustment rod (403) by the spring (405) in the compressed state to snap into the coarse adjustment hole (302) corresponding to this position again, and fix the positions of the test frame (3) and the intermediate frame (4) again. c. When it is necessary to finely adjust the lateral positions of the workbench (5) and the motor on its top side, rotate the screw rod (6) under the support of the sliding rod (402). Utilize the thread matching effect between the external thread (601) on the outer side of the screw rod (6) and the workbench (5) to drive the workbench (5) to slide laterally under the guidance of the sliding groove (401a), and then finely adjust the lateral positions of the workbench (5) and the motor on its top side slowly. Thus, through the cooperation of rapid coarse adjustment and slow fine adjustment, the convenience of moving the workbench (5) and the motor on its top side to the test position is improved. d. Support the two upper workbenches (5) through two groups of test frames (3). Ensure that when the motor above one group of workbenches (5) is in the test state, the installation and disassembly of the motor can be carried out above the other group of workbenches (5). Support the sliding bar (201) of the position-changing frame (2) to slide back and forth through the sliding frame (101) of the support bracket (1), so as to replace the positions of the two groups of test frames (3) and the two groups of workbenches (5), improve the influence of the motor disassembly process on the test work when there is only one group of test workstations, and thus improve the motor test efficiency.

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