A rotor magnetic detection and positioning fixture

Abstract

A rotor magnetic detection positioning fixture includes a base with a positioning cavity and a rotating disk within it. The rotating disk and base form a circumferential rotation pair. The rotating disk has several arc-shaped limiting grooves spaced circumferentially around its central hole. The upper surface of the base has guide components equal in number to the limiting grooves, arranged circumferentially. Each guide component includes a guide groove and a clamping block. The clamping block and the guide groove form a radial sliding pair. A limiting rod is fixedly connected to the upper side of each clamping block, and each limiting rod is positioned in a corresponding limiting groove. This invention uses a rotating disk to control the positioning stroke of the clamping blocks, making it compatible with rotors of different diameters. It has a wide range of applications and good versatility, eliminating the need to change positioning fixtures of different models. This allows for rapid product switching in magnetic detection, improving production efficiency and test result stability during manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to tooling fixtures, especially a rotor surface magnetic detection and positioning tooling. Background Technology

[0002] In recent years, the new energy vehicle industry has experienced explosive growth, with rapid technological iteration. The rotor is a key component in the motor of a new energy vehicle. When a rotor rolls off the production line, its surface magnetic properties need to be tested. This testing can detect problems such as reverse assembly, missing parts, or lack of magnetization during the assembly process, ensuring a high rotor manufacturing pass rate. Surface magnetic testing is a crucial step in screening out defective rotor products. In existing technologies, surface magnetic testing equipment requires rotor positioning before testing its magnetic properties. Existing positioning fixtures have poor compatibility and versatility, unable to adapt to rotors of different diameters. Custom-made positioning fixtures are needed based on the rotor shaft dimensions. During the trial production and prototyping stage, the demand for new product manufacturing is high, and manufacturing multiple models of positioning fixtures is time-consuming, increasing project development costs and manufacturing cycles. Fixture changeovers are also time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this utility model is to provide a rotor magnetic detection and positioning fixture to solve the technical problem that the existing rotor magnetic detection and positioning fixtures cannot adapt to rotor products of different diameters.

[0004] This utility model provides a rotor magnetic detection and positioning fixture, including a base, a positioning cavity in the base, a rotating disk in the base, the rotating disk and the base forming a circumferential rotation pair, a central hole in the rotating disk, and a plurality of arc-shaped limiting grooves spaced circumferentially around the central hole on the rotating disk. The upper surface of the base has a number of guide components equal to the number of limiting grooves along the circumferential direction. The guide components include guide grooves and clamping blocks. The clamping blocks and guide grooves form a radial sliding pair. A limiting rod is fixedly connected to the upper side of any clamping block, and each limiting rod is disposed in a corresponding limiting groove. The base has a threaded hole, and a bolt is threaded into the threaded hole. The upper end of the bolt contacts the bottom surface of the rotating disk. A cover plate is fixedly mounted on the base, located above the rotating disk, with a gap between the cover plate and the rotating disk. A keyway pin passes radially through the side wall of the positioning cavity of the base.

[0005] Furthermore, the guide component is disposed on a fixed plate, which is located between the base and the rotating disk and is fixedly connected to the base.

[0006] Furthermore, the threaded hole is provided on the fixing plate.

[0007] Furthermore, the number of the limiting grooves is three.

[0008] Furthermore, a number of handles are spaced apart on the outer circumference of the rotating disk, and a groove corresponding to the handle is provided on the upper surface of the base. The handle is set in the groove and extends outward from the base.

[0009] Furthermore, the number of handles is three.

[0010] Furthermore, an opening is provided on one side of the bolt in the outer wall of the base.

[0011] Compared with existing technologies, the advantages of this invention are positive and significant. This invention uses a rotary disc to control the positioning stroke of the clamping block, making it compatible with rotor products of different diameters. It has a wide range of applications and good versatility, eliminating the need to change positioning fixtures of different models. This allows for rapid product switching during magnetic testing, improving production efficiency and the stability of test results. The keyway pin and clamping block work together to completely fix the rotor, ensuring precise positioning and preventing even slight rotor movement during magnetic testing, thereby enhancing the stability of test results. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a rotor magnetic detection and positioning fixture according to the present invention.

[0013] Figure 2 This is a schematic diagram of the removal of the cover plate of a rotor magnetic detection and positioning fixture according to the present invention.

[0014] Figure 3 This is a top view of the rotor magnetic detection and positioning fixture of this utility model, showing the removal of the cover plate and the turntable.

[0015] Figure 4 This is a front view schematic diagram of a rotor magnetic detection and positioning fixture according to the present invention. Detailed Implementation

[0016] The present invention will be further described below with reference to embodiments, but the present invention is not limited to these embodiments. Any similar variations using the present invention should be included within the protection scope of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of clear description and is not intended to limit the technical solution of the present invention.

[0017] like Figures 1-4As shown, this utility model provides a rotor magnetic detection and positioning fixture, including a base 1, a positioning cavity in the base 1, a rotating disk 2 in the base 1, the rotating disk 2 and the base 1 forming a circumferential rotation pair, a central hole in the rotating disk 2, and a plurality of arc-shaped limiting grooves 3 spaced circumferentially around the central hole on the rotating disk 2. The upper surface of the base 1 has a number of guide components equal to the number of limiting grooves 3 along the circumferential direction. The guide components include guide grooves 5 and clamping blocks 6. 6 and guide groove 5 form a radial sliding pair. Each clamping block 6 is fixedly connected to a limiting rod 7 on its upper side. Each limiting rod 7 is set in a corresponding limiting groove 3. The base 1 is provided with a threaded hole 8. A bolt 9 is threadedly connected to the threaded hole 8. The upper end of the bolt 9 contacts the bottom surface of the rotating disk 2. A cover plate 10 is fixedly provided on the base 1. The cover plate 10 is located above the rotating disk 2. A gap is provided between the cover plate 10 and the rotating disk 2. A keyway pin 11 is radially inserted into the side wall of the positioning cavity of the base 1.

[0018] Furthermore, the guide component is disposed on the fixed plate 4, which is located between the base 1 and the rotating disk 2 and is fixedly connected to the base 1.

[0019] Furthermore, the threaded hole 8 is provided on the fixing plate 4.

[0020] Furthermore, the number of the limiting grooves 3 is three.

[0021] Furthermore, a plurality of handles 12 are spaced apart on the outer circumference of the rotating disk 2, and a groove 13 corresponding to the handle 12 is provided in the upper end surface of the base 1. The handle 12 is disposed in the groove 13 and extends outward from the base 1.

[0022] Furthermore, the number of handles 12 is three.

[0023] Furthermore, an opening 14 is provided on one side of the bolt 9 in the outer wall of the base 1.

[0024] The working principle of this utility model:

[0025] Place the rotor shaft in the positioning cavity of the base 1, and manually rotate the rotating disk 2. The rotating disk 2 drives the clamping block 6 to move radially inward through the limiting groove 3 and the limiting rod 7. At the same time, adjust the position of the rotor shaft so that each clamping block 6 is in contact with the rotor shaft, ensuring that the rotor shaft is in the center position of the positioning cavity. Then adjust the bolt 9. The bolt 9 pushes the rotating disk 2 upward, so that the upper surface of the rotating disk 2 contacts the lower surface of the cover plate 10 to apply pressure, thereby pre-locking the rotating disk 2. At this time, the rotor shaft can rotate in the positioning cavity. Manually adjust the rotation angle of the rotor shaft so that the keyway of the rotor shaft is aligned with the keyway pin 11. Then manually insert the keyway pin 11 into the keyway of the rotor shaft to restrict the rotation of the rotor shaft in the positioning cavity. Then adjust the clamping block 6 and the bolt 9 to completely fix the rotor shaft, ensuring that the initial angle of each rotor shaft is consistent during testing.

[0026] This invention uses a rotating disk 2 to control the positioning stroke of the clamping block 6, making it compatible with rotor products of different diameters. It has a wide range of applications and good versatility, eliminating the need to change positioning fixtures of different models. This allows for rapid product switching during magnetic testing, improving production efficiency and test result stability. The keyway pin 11 and the clamping block 6 work together to completely fix the rotor shaft, ensuring precise positioning and preventing even slight movement of the rotor shaft during magnetic testing, thus enhancing the stability of the test results.

Claims

1. A rotor surface magnet detection positioning tool, characterized in that, The system includes a base with a positioning cavity and a rotating disk. The rotating disk and the base form a circumferential rotation pair. The rotating disk has a central hole, and several arc-shaped limiting grooves are spaced circumferentially around the central hole. The upper surface of the base has a number of guide components equal to the number of limiting grooves along the circumferential direction. The guide components include guide grooves and clamping blocks. The clamping blocks and guide grooves form a radial sliding pair. Each clamping block has a limiting rod fixedly connected to its upper side, and each limiting rod is set in a corresponding limiting groove. The base has a threaded hole with a bolt threaded into it. The upper end of the bolt contacts the bottom surface of the rotating disk. A cover plate is fixedly installed on the base, located above the rotating disk, with a gap between the cover plate and the rotating disk. A keyway pin passes radially through the side wall of the positioning cavity of the base.

2. The rotor surface magnetic detection positioning tool according to claim 1, wherein, The guide component is mounted on a fixed plate, which is located between the base and the rotating disk and is fixedly connected to the base.

3. The rotor surface magnetic detection positioning tool of claim 2, wherein, The threaded hole is provided on the fixing plate.

4. The rotor surface magnetic detection positioning tool of claim 1, wherein, The number of limiting grooves is three.

5. The rotor surface magnet detection positioning tool of claim 1, wherein, The rotating disk has several handles spaced apart on its outer circumference, and the upper surface of the base has grooves corresponding to the handles. The handles are set in the grooves and extend outward from the base.

6. The rotor surface magnetic detection and positioning fixture according to claim 5, characterized in that, The number of handles is three.

7. A rotor surface magnetic detection and positioning fixture according to any one of claims 1-3, characterized in that, An opening is provided on one side of the bolt in the outer wall of the base.

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