Rapid clamping tool for side hole machining of electric corrosion protection aluminum ring

Abstract

The utility model relates to the technical field of automobile motors, in particular to an electric corrosion protection aluminum ring side hole machining rapid clamping tool which comprises a base plate, a positioning table and a positioning column are sequentially arranged in the center of the base plate in the axial direction, and the base plate, the positioning table and the positioning column are coaxially arranged; the pressing plate is detachably arranged at the end of the positioning column, and the protective aluminum ring is clamped between the positioning table and the pressing plate. A positioning hole is formed in the positioning table, a positioning bolt is inserted into the positioning hole, and the positioning bolt is parallel to the axis of the positioning column; receding grooves are evenly distributed in the cylindrical surface of the positioning column in the circumferential direction and extend to the positioning table from the end of the positioning column in the axial direction. Through cooperation of the positioning table and the positioning column on the base plate and the pressing plate, the protective aluminum ring can be rapidly clamped between the positioning table and the pressing plate, and rapid clamping is achieved; due to the coaxial arrangement of the positioning table and the positioning column and the design of the positioning hole and the positioning plug pin, the positioning accuracy and stability are further improved, and the clamping time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of automotive motor technology, and in particular to a quick clamping fixture for machining the side holes of an aluminum ring with electro-erosion protection. Background Technology

[0002] The electric motors of new energy vehicles generate static electricity during long-term high-speed rotation, which can easily cause electrolytic corrosion on the motor shaft. To improve the stability of the most important motor component in new energy vehicles, an electrolytic corrosion protection ring with a superconducting fiber brush is embedded at the end of the shaft. This ring guides the shaft current on the motor shaft to the grounding end, thereby preventing the shaft current from discharging through the bearing, effectively solving the shaft voltage problem and preventing electrolytic corrosion damage to the bearing.

[0003] Superconducting fibers need to be embedded in multiple tiny side holes of the electro-erosion protective ring. With the increasing market demand, ordinary processing methods can no longer meet the needs of processing side holes of multi-hole and high-precision electro-erosion rings.

[0004] Chinese invention patent CN118437882A discloses a shaft grounding ring processing equipment, which includes a base, a frame, a clamping and feeding mechanism, a rivet placement mechanism, a riveting mechanism, and a fiber shearing mechanism. The clamping and feeding mechanism includes a fixed base, a rotary worktable, a drive assembly, and fixed fixtures. The drive assembly is located below the rotary worktable and is connected to the fixed base to drive the rotary worktable to rotate. The rotary worktable is provided with multiple fixed fixtures for fixing the shaft grounding rings to be processed. However, the processing equipment uses general-purpose fixtures, and each fixture can only clamp one electro-erosion protection ring. After clamping, it needs to be repositioned, resulting in low clamping efficiency and an increased defect rate after long clamping time. Utility Model Content

[0005] The purpose of this invention is to provide a quick clamping fixture for machining the side holes of an aluminum ring with electro-erosion protection, in order to solve the problems mentioned in the background art.

[0006] The above-mentioned objective of this utility model is achieved through the following technical solution: a quick-clamping fixture for machining the side holes of an aluminum ring with electro-erosion protection, mounted on the chuck of a clamping fixture, comprising:

[0007] A base plate is mounted on the chuck, and a positioning stage and a positioning post are sequentially arranged along the axial direction at the center of the base plate. The base plate, the positioning stage and the positioning post are coaxially arranged.

[0008] A pressure plate is detachably mounted at the end of the positioning column, clamping the protective aluminum ring between the positioning platform and the pressure plate;

[0009] The positioning platform is provided with a positioning hole, and a positioning pin is inserted into the positioning hole. The positioning pin is parallel to the axis of the positioning column.

[0010] The positioning column has uniformly distributed clearance grooves on its cylindrical surface, which extend axially from the end of the positioning column to the positioning platform.

[0011] Preferably, the positioning post has a threaded mounting hole at its center, and the pressure plate is fixed to the positioning post by bolts and the threaded mounting hole.

[0012] Preferably, the outer diameter of the positioning platform is greater than or equal to the outer diameter of the protective aluminum ring.

[0013] Preferably, the number of positioning holes is at least two, and they are distributed circumferentially around the outer periphery of the positioning post.

[0014] Preferably, the diameter of the pressure plate is larger than the diameter of the positioning post, but smaller than the diameter of the circumference of the positioning hole.

[0015] Preferably, the clearance groove is a rectangular groove or a U-shaped groove.

[0016] Preferably, the opening of the clearance groove is provided with a guide slope.

[0017] Preferably, an annular mounting groove is provided on the end face of the positioning post, the positioning hole is located at the center of the annular mounting groove, a compression spring is provided in the annular mounting groove, and one end of the compression spring abuts against the pressure plate.

[0018] The beneficial effects of this utility model are:

[0019] This utility model, through the cooperation of the positioning stage and positioning post on the base plate and the pressure plate, can quickly clamp the protective aluminum ring between the positioning stage and the pressure plate, thus achieving rapid clamping.

[0020] The coaxial arrangement of the positioning stage and positioning column, as well as the design of the positioning hole and positioning pin, further improves the accuracy and stability of positioning, reduces clamping time, and the high-precision clamping reduces processing waste caused by loose clamping or inaccurate positioning, thereby further improving production efficiency and product quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation of the protective aluminum ring in Embodiment 1 of this utility model;

[0022] Figure 2 This is an exploded view of the clamping fixture in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the substrate, positioning platform, and positioning post in Embodiment 1 of this utility model;

[0024] Figure 4 This is an exploded view of the clamping fixture in Embodiment 2 of this utility model;

[0025] In the diagram: 1-Chuck, 2-Base plate, 3-Positioning stage, 301-Positioning hole, 4-Positioning post, 401-Threaded mounting hole, 402-Clearing groove, 403-Guide slope, 404-Annular mounting groove, 5-Positioning pin, 6-Pressure plate, 7-Bolt, 8-Protective aluminum ring, 9-Compression spring. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

[0028] Example 1:

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, a quick clamping fixture for machining the side hole of an aluminum ring with electro-erosion protection is mounted on the chuck 1 of the fixture, and includes: a base plate 2 and a pressure plate 6, wherein the base plate 2 is used to mount on the chuck 1.

[0030] A positioning platform 3 and a positioning post 4 are sequentially arranged along the axial direction at the center of the substrate 2. The substrate 2, the positioning platform 3 and the positioning post 4 are arranged coaxially, and the substrate 2, the positioning platform 3 and the positioning post 4 adopt an integrated structure.

[0031] The pressure plate 6 is detachably mounted at the end of the positioning post 4, clamping the protective aluminum ring between the positioning table 3 and the pressure plate 6. The length of the positioning post 4 is greater than the thickness of at least two protective aluminum rings, which is determined by the actual processing requirements.

[0032] The outer diameter of the positioning platform 3 is greater than or equal to the outer diameter of the protective aluminum ring. The diameter of the pressure plate 6 is greater than the diameter of the positioning post 4, but smaller than the diameter of the circumference of the positioning hole 301.

[0033] The positioning platform 3 is provided with a positioning hole 301, and a positioning pin 5 is inserted into the positioning hole 301. The positioning pin 5 is parallel to the axis of the positioning column 4. Similarly, the protective aluminum ring has the same through hole. During installation, the positioning pin 5 passes through the through hole of the protective aluminum ring and the positioning hole 301.

[0034] There are multiple positioning holes 301, which are distributed in a circle around the outer periphery of the positioning post 4. In this embodiment, there are two positioning holes 301.

[0035] The center of the positioning post 4 is provided with a threaded mounting hole 401, and the pressure plate 6 is fixed to the positioning post 4 by bolts 7 and the threaded mounting hole 401.

[0036] The positioning post 4 has evenly distributed clearance grooves 402 on its cylindrical surface, which extend axially from the end of the positioning post 4 to the positioning platform 3. The clearance grooves 402 are rectangular or U-shaped, and guide ramps 403 are provided at the opening of the clearance grooves 402. The two guide ramps 403 at the opening of the clearance grooves 402 increase the size of the opening of the clearance grooves 402, so that the drill bit can smoothly enter the clearance grooves 402 during drilling.

[0037] Example 2:

[0038] like Figure 4 As shown, as a further improvement, an annular mounting groove 404 is provided on the end face of the positioning post 4, and the positioning hole 301 is located at the center of the annular mounting groove 404. A compression spring 9 is provided in the annular mounting groove 404, and one end of the compression spring 9 abuts against the pressure plate 6. When the pressure plate 6 is installed in place, the compression spring 9 is compressed, generating a thrust on the pressure plate 6 in the axial direction to prevent the bolts from loosening due to vibration during processing.

Claims

1. A quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection, mounted on the chuck (1) of a fixture, comprising: The substrate (2) is mounted on the chuck (1). The center of the substrate (2) is provided with a positioning stage (3) and a positioning post (4) in sequence along the axial direction. The substrate (2), the positioning stage (3) and the positioning post (4) are coaxially arranged. The pressure plate (6) is detachably disposed at the end of the positioning post (4) to clamp the protective aluminum ring between the positioning table (3) and the pressure plate (6); The positioning platform (3) is provided with a positioning hole (301), and a positioning pin (5) is inserted into the positioning hole (301). The positioning pin (5) is parallel to the axis of the positioning column (4). The positioning column (4) has uniformly distributed clearance grooves (402) on its cylindrical surface. The clearance grooves (402) extend axially from the end of the positioning column (4) to the positioning platform (3).

2. The quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection according to claim 1, characterized in that: The positioning post (4) has a threaded mounting hole (401) at its center, and the pressure plate (6) is fixed to the positioning post (4) by bolts (7) and the threaded mounting hole (401).

3. The quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection according to claim 1, characterized in that: The outer diameter of the positioning platform (3) is greater than or equal to the outer diameter of the protective aluminum ring.

4. The quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection according to claim 3, characterized in that: The number of positioning holes (301) is at least two, and they are distributed in a circular pattern on the outer periphery of the positioning post (4).

5. The quick-clamping fixture for machining the side holes of an aluminum ring with electro-erosion protection according to claim 4, characterized in that: The diameter of the pressure plate (6) is greater than the diameter of the positioning post (4) and smaller than the diameter of the circumference of the positioning hole (301).

6. The quick-clamping fixture for machining the side holes of an aluminum ring with electro-erosion protection according to claim 1, characterized in that: The clearance groove (402) is a rectangular groove or a U-shaped groove.

7. The quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection according to claim 6, characterized in that: The opening of the clearance groove (402) is provided with a guide slope (403).

8. The quick-clamping fixture for machining side holes of an aluminum ring with electro-erosion protection according to claim 1, characterized in that: An annular mounting groove (404) is provided on the end face of the positioning column (4), the positioning hole (301) is located at the center of the annular mounting groove (404), and a compression spring (9) is provided in the annular mounting groove (404), one end of the compression spring (9) abuts against the pressure plate (6).

Images