Positioning clamp for detecting high-speed marking stepping motor rotor

Abstract

The utility model discloses a positioning fixture for detecting a high-speed marking stepping motor rotor, which is applied to the field of rotor detection and comprises a base, a placement table penetrating to the top of the base is arranged in the base, a screw is rotatably connected in the placement table through a bearing, threaded blocks are in threaded connection with the surfaces of the two ends of the screw, and the threaded blocks are in threaded connection with the threaded blocks. When the high-speed marking stepping motor rotor is detected, an operator adheres to the opposite side of the detector, the rotor is placed between the two clamping pieces, then the rotary knob is rotated, when the two threaded blocks gradually get close to the clamping pieces, the contact layer makes contact with the rotor, and therefore the rotor is detected. And the rotor can be clamped and fixed. Through the arrangement, the fixing stability of the rotor can be improved, the fixing mode can be matched with rotors of different sizes for use, and the same position of the axes of the rotors of different sizes is kept, so that the subsequent detection and use of a detector are facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of rotor detection, in particular to a positioning fixture for detecting the rotor of a high-speed marking stepping motor. Background Art

[0002] The rotor of a stepper motor is composed of multiple rotor cores and magnets stacked between the cores. Since there are regularly distributed tooth combs on the circumference of the rotor core, there is a 180-degree phase difference between the two rotor core tooth combs. If there is no such phase difference, it will greatly affect the motor's rotational torque. Therefore, the rotor tooth combs need to be inspected with a fixture to avoid defective products.

[0003] Currently, there is a Chinese utility model with the announcement number CN219977435U. The utility model provides a positioning device for detecting motor rotors of new energy vehicles, belonging to the field of detection technology; it includes a detection device body, a motor is provided below the detection device body, a detector is provided on one side of the top of the detection device body, and a rotatable workbench is provided above the detection device body. The utility model sets up a workbench. After the motor rotor to be tested is placed in any fixed sleeve above the workbench and fixed, the user can start the motor to drive the workbench to rotate, so that the motor rotor fixed by the fixed sleeve rotates into the detector for testing. During the testing process, the user can place another motor rotor to be tested in another fixed sleeve for fixing. This eliminates the need for the user to wait for the test to be completed before disassembling and installing the device, thereby improving the detection efficiency.

[0004] When positioning the rotor, this positioning device uses a spring to achieve a tightening force. However, under the action of the spring, resonance has occurred, which has caused instability in the fixation of the rotor. In addition, when the motor drives the workbench, it is necessary to rely on the rotation of the motor to achieve self-locking after rotation. Under long-term use, it will bring a burden to the motor and affect the service life of the motor. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning fixture for high-speed marking stepper motor rotor detection, which has the advantages of improving fixing stability, facilitating subsequent detection, achieving angle self-locking, and reducing dependence on the rotating motor.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: A positioning fixture for detecting the rotor of a high-speed marking stepper motor, comprising a base, a placement table extending to the top of the base, a screw being rotatably connected to the inside of the placement table through a bearing, threaded blocks being threadedly connected to the surfaces of both ends of the screw, a clamping member being fixedly installed on the top of the threaded block, an internal gear being fixedly installed on the bottom of the placement table, an external gear being meshed with the inner side of the internal gear, a worm being provided at the bottom of the external gear, a worm being meshed with a worm on the surface of the worm wheel, a rotating motor being fixedly connected to the inside of the base at one end of the worm, and an output end of the rotating motor being fixedly sleeved with the worm through a coupling.

[0007] The above technical solution is adopted: when inspecting the rotor of a high-speed marking stepper motor, the operator adheres to the opposite side of the detector, places the rotor between the two clamps, and then turns the knob so that the knob drives the screw to rotate, thereby moving the two threaded blocks. The sliding connection between slider 1 and chute 1 cooperates with the threaded blocks to move and guide inside the placement table. The two ends of the screw are reversely threaded, which will realize the reverse movement of the two threaded blocks. When the two threaded blocks and the clamp gradually approach each other, the contact layer will realize contact with the rotor and clamp the rotor. The sliding connection between slider 2 and chute 2 cooperates with the clamp to move and guide on the top of the placement table. The contact layer increases the contact protection of one side of the clamp to avoid extrusion damage to the rotor. This setting can improve the stability of the rotor fixation, and the fixing method can be used with rotors of different sizes, and keep the axis of rotors of different sizes in the same position, so as to facilitate the subsequent detection and use of the detector. During the inspection of high-speed marking stepper motor rotors, the motor's operation drives the worm, which in turn rotates the worm wheel and connecting rod. The connecting rod then drives the outer gear. The meshing of the outer and inner gears synchronizes the inner gear and the placement table, which then rotates the clamped rotor. This drives the rotor opposite the tester to the bottom of the tester, completing the rotor inspection. After inspection, the rotor is unloaded by another staff member standing on one side of the tester. After unloading, the empty clamp is rotated again to the opposite side of the tester, where the rotor is loaded by a loading staff member. The staff member can load and unload the rotor within the gap between the tester and the rotor. This setup improves rotor inspection efficiency. The worm wheel and worm arrangement also facilitates angular self-locking when the placement table is stationary after rotation, reducing its dependence on the motor and ensuring the motor's service life.

[0008] The present invention is further configured such that a slider is fixedly mounted on the bottom of the threaded block, and a slide groove is provided inside the placement platform for cooperating with the slider.

[0009] The above technical solution is adopted: through the sliding connection between the slider 1 and the slide groove 1, the threaded block is cooperated to move and guide inside the placement table.

[0010] The utility model is further configured such that one end of the screw rod passes through the outside of the placement table and is fixedly mounted with a knob, and a contact layer is fixedly adhered to the inner side of the clamping piece.

[0011] By adopting the above technical solution, the screw rod is driven to rotate by rotating the knob, and the contact layer increases the contact protection of one side of the clamping part.

[0012] The present invention is further configured such that two sliders are fixedly mounted on both ends of the bottom of the clamping member, and a sliding groove is provided on the top of the placement table for cooperating with the sliding sliders.

[0013] The above technical solution is adopted: the sliding connection between the slider 2 and the slide groove 2 is used to cooperate with the clamping member to move and guide on the top of the placement table.

[0014] The present invention is further configured such that a detector is provided on the top of the placement table, and a fixing piece fixedly connected to the base is fixedly installed on the bottom of the detector.

[0015] The above technical solution is adopted: the rotor is detected by the detector, and the fixing piece supports and fixes the detector.

[0016] The present invention is further configured such that a connecting rod rotatably connected to the base is fixedly sleeved inside the external gear, and the connecting rod and the worm gear are fixedly sleeved with each other.

[0017] The above technical solution is adopted: the outer gear and the worm gear are supported by the connecting rod.

[0018] The present invention is further configured such that a sleeve ring is fixedly sleeved on the surface of the placement table and is rotatably connected to the inside of the base via a bearing.

[0019] The above technical solution is adopted: the placement table is supported by the sleeve ring, and the placement table is supported by the bearing.

[0020] The present invention is further configured such that the surface of the base is provided with heat dissipation holes for cooperating with the rotating motor to dissipate heat.

[0021] The above technical solution is adopted: heat dissipation is achieved by rotating the motor through the heat dissipation holes.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. When testing the rotor of a high-speed marking stepper motor, the operator stands opposite the tester, places the rotor between two clamps, and then turns the knob. As the two threaded blocks and the clamps gradually approach each other, the contact layer will contact the rotor and clamp it securely. This arrangement improves the stability of the rotor's fixation and can be used with rotors of different sizes, maintaining the same position of the rotor's axis for subsequent testing with the tester.

[0024] 2. In the detection of the rotor of a high-speed marking stepper motor, the utility model will rotate the motor to drive the clamped rotor to rotate, and drive the rotor located opposite the detector to the bottom of the detector to realize the detection of the rotor. After the rotor is detected by the detector, another staff member standing on the side of the detector will unload the rotor. After unloading, the empty clamping piece will be rotated to the opposite side of the detector again, and the loading staff will load the rotor. The staff can load and unload the rotor in the gap where the detector detects the rotor. This setting can improve the efficiency of the rotor detection. At the same time, the setting of the worm gear and worm will facilitate the self-locking of the angle of the placement table when it is stationary after rotation, reduce the dependence on the rotating motor, and ensure the service life of the rotating motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This utility model Figure 1 A in the middle is an enlarged schematic diagram;

[0027] Figure 3 It is an enlarged schematic diagram of the right side cross-section of the present utility model;

[0028] Figure 4 This is a top view of the internal gear and the external gear of the utility model;

[0029] Figure 5 It is a top view schematic diagram of the worm wheel and worm of the present invention.

[0030] Figure numerals: 1. base; 2. placement table; 3. detector; 4. screw; 5. threaded block; 6. clamping part; 7. slider 1; 8. slide groove 1; 9. knob; 10. contact layer; 11. fixing part; 12. slider 2; 13. slide groove 2; 14. internal gear; 15. external gear; 16. connecting rod; 17. worm gear; 18. worm; 19. rotating motor; 20. heat dissipation hole; 21. sleeve ring. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings.

[0032] Example 1:

[0033] refer to Figure 1 、 Figure 2 and Figure 3 A positioning fixture for detecting the rotor of a high-speed marking stepper motor includes a base 1. The base 1 is provided with a placement table 2 extending to the top of the base 1. The placement table 2 is rotatably connected to a screw 4 via a bearing. The surfaces of both ends of the screw 4 are threadedly connected to threaded blocks 5. A clamping member 6 is fixedly installed on the top of the threaded block 5. When detecting the rotor of a high-speed marking stepper motor, the operator adheres to the opposite side of the detector 3, places the rotor between the two clamping members 6, and then turns the knob 9. When the two threaded blocks 5 and the clamping member 6 gradually approach each other, the contact layer 10 will contact the rotor and clamp the rotor. This setting can improve the stability of the rotor fixation, and the fixing method can be used with rotors of different sizes, and keep the axis of the rotors of different sizes in the same position, so as to facilitate the subsequent detection of the detector 3.

[0034] refer to Figure 3 A slider 7 is fixedly installed at the bottom of the threaded block 5, and a slide groove 8 is opened inside the placement table 2 to cooperate with the slider 7 to slide. Through the sliding connection between the slider 7 and the slide groove 8, the threaded block 5 is moved and guided inside the placement table 2.

[0035] refer to Figure 1 One end of the screw rod 4 passes through the outside of the placement table 2 and is fixedly installed with a knob 9. The inner side of the clamping part 6 is fixedly adhered with a contact layer 10. The rotation of the knob 9 will drive the screw rod 4 to rotate. The contact layer 10 increases the contact protection of one side of the clamping part 6.

[0036] refer to Figure 1 , sliders 2 12 are fixedly installed at both ends of the bottom of the clamping member 6, and a slide groove 2 13 is provided on the top of the placement table 2 for sliding with the slider 2 12. Through the sliding connection between the slider 2 12 and the slide groove 2 13, the clamping member 6 is guided to move on the top of the placement table 2.

[0037] refer to Figure 1 A detector 3 is provided on the top of the placement table 2, and a fixing part 11 fixedly connected to the base 1 is fixedly installed on the bottom of the detector 3. The rotor is detected by the detector 3, and the fixing part 11 supports and fixes the detector 3.

[0038] A brief description of the operating process: When testing the rotor of a high-speed marking stepper motor, the operator stands opposite the tester 3, places the rotor between two clamps 6, and then turns the knob 9, causing the knob 9 to rotate the screw 4, thereby moving the two threaded blocks 5. The sliding connection between the slider 1 7 and the chute 1 8 cooperates with the threaded blocks 5 to move and guide them within the placement table 2. The screw 4 has opposite threads at both ends, which will enable the two threaded blocks 5 to move in opposite directions. As the two threaded blocks 5 gradually approach the clamp 6, the contact layer 10 will come into contact with the rotor and clamp it. The sliding connection between the slider 2 12 and the chute 2 13 cooperates with the clamp 6 to guide it on the top of the placement table 2. The contact layer 10 increases the contact protection of one side of the clamp 6, preventing extrusion damage to the rotor. This arrangement can improve the stability of the rotor fixation. This fixing method can be used with rotors of different sizes, and the axis of the rotors of different sizes are kept in the same position, facilitating subsequent testing with the tester 3.

[0039] Example 2:

[0040] refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 A positioning fixture for testing the rotor of a high-speed marking stepper motor comprises a base 1, a placement table 2 having an internal gear 14 fixedly mounted on the bottom thereof, an external gear 15 meshing with the inner side of the internal gear 14, a worm gear 17 provided at the bottom of the external gear 15, a worm gear 17 meshing with the surface of the worm gear 17, and a rotating motor 19 fixedly connected to the interior of the base 1 at one end thereof. The output end of the rotating motor 19 is fixedly sleeved with the worm gear 18 via a coupling. During the testing of the rotor of the high-speed marking stepper motor, the placement table 2 is driven by the rotation of the rotating motor 19 to rotate the clamped rotor, driving the rotor located opposite the detector 3 to the bottom of the detector 3, thereby completing the rotor testing process. After being tested by the detector 3, the rotor is unloaded by another staff member standing on one side of the detector 3. After unloading, the empty clamp 6 is rotated again to the opposite side of the detector 3, and the rotor is loaded by a loading staff member, who can load and unload the rotor in the gap between the detector 3 and the rotor. This arrangement can improve the efficiency of the rotor detection. At the same time, the arrangement of the worm wheel 17 and the worm 18 will facilitate the placement table 2 to achieve angular self-locking when it is stationary after rotation, and reduce dependence on the rotating motor 19, thereby ensuring the service life of the rotating motor 19.

[0041] refer to Figure 3 The inner part of the outer gear 15 is fixedly sleeved with a connecting rod 16 rotatably connected to the base 1 . The connecting rod 16 and the worm gear 17 are fixedly sleeved with each other, and the outer gear 15 and the worm gear 17 are supported by the connecting rod 16 .

[0042] refer to Figure 3 The surface of the placement table 2 is fixedly sleeved with a sleeve ring 21 that is rotatably connected to the inside of the base 1 through a bearing. The placement table 2 is supported by the sleeve ring 21, and the placement table 2 is supported by the bearing.

[0043] refer to Figure 1 The surface of the base 1 is provided with heat dissipation holes 20 for cooperating with the rotating motor 19 to dissipate heat, and the heat dissipation holes 20 are used to cooperate with the rotating motor 19 to dissipate heat.

[0044] Brief description of the usage process: During the inspection of the high-speed marking stepper motor rotor, the worm 18 will be driven to rotate by the operation of the rotating motor 19. The worm 18 will drive the worm wheel 17 and the connecting rod 16 to rotate. The connecting rod 16 will drive the outer gear 15 to rotate. The meshing of the outer gear 15 and the inner gear 14 will make the inner gear 14 and the placement table 2 rotate synchronously. The placement table 2 will drive the clamped rotor to rotate, and the rotor located opposite the detector 3 will be driven to the bottom of the detector 3 to complete the rotor inspection. After the rotor is inspected by the detector 3, it will be unloaded by another staff member standing on the side of the detector 3. After unloading, the empty clamp 6 will be rotated again to the opposite side of the detector 3, and the rotor will be loaded by the loading staff. The staff can load and unload materials in the gap between the detector 3 and the rotor. This arrangement can improve the efficiency of the rotor detection. At the same time, the arrangement of the worm wheel 17 and the worm 18 will facilitate the placement table 2 to achieve angular self-locking when it is stationary after rotation, and reduce dependence on the rotating motor 19, thereby ensuring the service life of the rotating motor 19.

[0045] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A positioning fixture for high-speed marking stepper motor rotor detection, comprising a base (1), characterized in that: The base (1) is provided with a placement platform (2) extending to the top of the base (1), the placement platform (2) is rotatably connected to a screw (4) through a bearing, the surfaces of both ends of the screw (4) are threadedly connected to threaded blocks (5), the top of the threaded block (5) is fixedly installed with a clamping member (6), the bottom of the placement platform (2) is fixedly installed with an internal gear (14), the inner side of the internal gear (14) is meshed with an external gear (15), the bottom of the external gear (15) is provided with a worm wheel (17), the surface of the worm wheel (17) is meshed with a worm (18), one end of the worm (18) is provided with a rotating motor (19) fixedly connected to the inside of the base (1), and the output end of the rotating motor (19) is fixedly sleeved with the worm (18) through a coupling.

2. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: A slider (7) is fixedly mounted on the bottom of the threaded block (5), and a slide groove (8) is provided inside the placement platform (2) for cooperating with the slider (7) for sliding.

3. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: One end of the screw rod (4) passes through the outside of the placement table (2) and is fixedly mounted with a knob (9), and the inner side of the clamping member (6) is fixedly adhered with a contact layer (10).

4. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: Two sliders (12) are fixedly mounted on both ends of the bottom of the clamping member (6), and a second slide groove (13) for cooperating with the second slider (12) is provided on the top of the placement platform (2).

5. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: A detector (3) is provided on the top of the placement platform (2), and a fixing member (11) fixedly connected to the base (1) is fixedly installed on the bottom of the detector (3).

6. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: A connecting rod (16) rotatably connected to the base (1) is fixedly sleeved inside the external gear (15), and the connecting rod (16) and the worm gear (17) are fixedly sleeved with each other.

7. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: The surface of the placement table (2) is fixedly sleeved with a sleeve ring (21) that is rotatably connected to the inside of the base (1) via a bearing.

8. The positioning fixture for detecting a high-speed marking stepper motor rotor according to claim 1, characterized in that: The surface of the base (1) is provided with heat dissipation holes (20) for cooperating with the rotating motor (19) to dissipate heat.

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