Motor shaft machining clamp

Abstract

The utility model discloses a motor shaft machining clamp which comprises a base, a plurality of sliding blocks are in inclined sliding fit with the base, and the inner sides of the front ends of the sliding blocks are connected with clamping blocks. The rear side of the base is connected with a blocking cover; the rear side of the blocking cover is connected with a flange plate A; the base is provided with a center hole, a shaft sleeve is connected in the center hole, and one end of the shaft sleeve is connected with a tip. The outer wall of the shaft sleeve is connected with a telescopic sleeve, the rear end of the sliding block is connected to the telescopic sleeve, and the rear end of the telescopic sleeve is connected to a telescopic device. Compared with the prior art, during working, the motor shaft is convenient to disassemble and assemble, and the motor shaft is limited in the shaft sleeve, so that the out-of-round condition of the motor shaft is avoided, and the machining precision of an inner hole is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a machining fixture for a motor shaft. Background Technique

[0002] As a core component of new energy vehicles, the drive motor, the motor shaft is a key part in the whole drive motor, used to fix the rotor core and transmit torque.

[0003] As Figure 1 shown, one end of the inner hole of the motor shaft needs to be machined. In the prior art, the motor shaft is generally clamped by an ordinary three-jaw chuck. However, since the motor shaft is relatively long as a whole, when the cutting tool contacts the motor shaft, the motor shaft is subjected to a large force, and the rotating motor shaft will be out-of-round, affecting the machining accuracy of the inner hole. Content of the Utility Model

[0004] The purpose of the utility model is to provide a machining fixture for a motor shaft, which is convenient for disassembling and assembling the motor shaft, and the motor shaft is restricted in the shaft sleeve, avoiding the out-of-round situation of the motor shaft and ensuring the machining accuracy of the inner hole, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A machining fixture for a motor shaft includes a base, several sliders are inclined and slidably matched with the base, and a clamping block is connected to the inner side of the front end of the slider; a retaining cover is connected to the rear side of the base, and a flange A is connected to the rear side of the retaining cover; the base is provided with a central hole, a shaft sleeve is connected in the central hole, and a center point is connected to one end of the shaft sleeve; a telescopic sleeve is connected to the outer wall of the shaft sleeve, the rear end of the slider is connected to the telescopic sleeve, and the rear end of the telescopic sleeve is connected to a telescopic device.

[0007] A further improvement of the utility model is that the base is integrally in a disc shape with an open rear end, a receiving cavity is formed between the retaining cover and the rear end of the base, the chute is higher at the front and lower at the rear and communicates with the receiving cavity, and the front end of the slider protrudes from the front end of the base.

[0008] A further improvement of the utility model is that there are three chutes in total, and the chutes are annularly and arrayedly distributed with the axial center line of the base as the center.

[0009] A further improvement of the utility model is that a limiting groove is provided on the slider, and a limiting screw is connected to the base, and the limiting screw is slidably matched with the limiting groove.

[0010] A further improvement of the utility model is that a fixing disc is connected to the front end of the telescopic sleeve, the fixing disc is located in the receiving cavity, and the rear ends of the sliders are all connected to the fixing disc.

[0011] A further improvement of the present utility model is that the telescopic sleeve is slidably fitted on the outer wall of the shaft sleeve, and a fixing seat is threadedly fitted at the tail end of the telescopic sleeve.

[0012] A further improvement of the present utility model is that the telescopic device is an oil cylinder, and the fixing seat is connected to the piston rod of the oil cylinder.

[0013] A further improvement of the present utility model is that a flange B is provided at the front end of the shaft sleeve, and the flange B is connected to the front end of the base.

[0014] A further improvement of the present utility model is that the center point is threadedly fitted at the rear end of the shaft sleeve.

[0015] Advantages of the present utility model:

[0016] The machining fixture for the motor shaft of the present utility model facilitates the disassembly and assembly of the motor shaft, and the motor shaft is restricted in the shaft sleeve, avoiding the out-of-roundness of the motor shaft and ensuring the machining accuracy of the inner hole.

[0017] For the machining fixture of the motor shaft of the present utility model, the axial direction of the motor shaft is positioned by the center point, and the radial direction is positioned by the clamping block, further ensuring the machining accuracy of the inner hole.

[0018] For the machining fixture of the motor shaft of the present utility model, the clamping block is pushed and pulled through the telescopic sleeve to achieve clamping or loosening, which is more practical and convenient. Description of the drawings

[0019] Figure 1 It is a structural schematic diagram of the motor shaft.

[0020] Figure 2 It is a schematic diagram of the overall structure of the present utility model.

[0021] Figure 3 It is Figure 2 the right view of

[0022] In the figure: 1 - base, 101 - sliding groove, 102 - limit screw, 2 - slider, 201 - limit groove, 3 - clamping block, 4 - retaining cover, 5 - flange A, 6 - shaft sleeve, 601 - flange B, 7 - center point, 8 - telescopic sleeve, 801 - fixed disk, 9 - fixing seat, 10 - motor shaft, 1001 - inner hole. Specific embodiments

[0023] The present utility model will be further clarified below with reference to the drawings and specific embodiments.

[0024] Embodiment 1: As Figures 1 to 3As shown in the figure, a machining fixture for a motor shaft includes a base 1, several sliders 2 are inclined and slidably fitted to the base 1, and a clamping block 3 is connected to the inner side of the front end of the slider 2; a retaining cover 4 is connected to the rear side of the base 1, and a flange A 5 is connected to the rear side of the retaining cover 4; the base 1 is provided with a central hole, a bushing 6 is connected in the central hole, and a center point 7 is connected to one end of the bushing 6; a telescopic sleeve 8 is connected to the outer wall of the bushing 6, the rear end of the slider 2 is connected to the telescopic sleeve 8, and the rear end of the telescopic sleeve 8 is connected to a telescopic device.

[0025] The base 1 is integrally in a disc shape and has an open rear end. A receiving cavity is formed between the retaining cover 4 and the rear end of the base 1. The chute 101 is higher at the front and lower at the rear and communicates with the receiving cavity, and the front end of the slider 2 protrudes from the front end of the base 1.

[0026] There are three chutes 101 in total, and the chutes 101 are annularly arranged around the axial center line of the base 1.

[0027] The slider 2 is provided with a limiting groove 201, and a limiting screw 102 is connected to the base 1. The limiting screw 102 is slidably fitted in the limiting groove 201.

[0028] A fixing plate 801 is connected to the front end of the telescopic sleeve 8. The fixing plate 801 is located in the receiving cavity, and the rear ends of the sliders 2 are all connected to the fixing plate 801.

[0029] The telescopic sleeve 8 is slidably fitted to the outer wall of the bushing 6, and a fixing seat 9 is threadedly fitted to the tail end of the telescopic sleeve 8.

[0030] The telescopic device is an oil cylinder, and the fixing seat 9 is connected to the piston rod of the oil cylinder.

[0031] A flange B 601 is provided at the front end of the bushing 6, and the flange B 601 is connected to the front end of the base 1.

[0032] The center point 7 is threadedly fitted to the rear end of the bushing 6.

[0033] The specific working principle of the present utility model is as follows:

[0034] Before work, the flange A 5 is connected to the main shaft of the machine tool, and the fixing seat 9 at the rear end of the telescopic sleeve 8 is connected to the piston rod of the oil cylinder. During work, the operator inserts the motor shaft 10 into the bushing 6, and the tailstock abuts against one end of the motor shaft 10; the oil cylinder contracts, pulling the telescopic sleeve 8 to move backward, and the telescopic sleeve 8 pulls the slider 2 backward. Since the chute 101 is higher at the front and lower at the rear, the three clamping blocks 3 will contract toward the center and clamp the motor shaft 10. The clamping surfaces of the three clamping blocks 3 are in an arc shape; after the inner hole 1001 of the motor shaft 10 is machined, the oil cylinder extends, the telescopic sleeve 8 pushes the slider 2 forward, the clamping block 3 releases the motor shaft 10, and the operator can remove the motor shaft 10.

[0035] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A motor shaft machining fixture, characterized in that: The invention comprises a base (1), a plurality of sliders (2) which are slidably matched with the base (1), the inner side of the front end of the slider (2) being connected to a clamping block (3); the rear side of the base (1) being connected to a blocking cover (4), the rear side of the blocking cover (4) being connected to a flange A (5); the base (1) being provided with a central hole, the central hole being connected to a shaft sleeve (6), one end of the shaft sleeve (6) being connected to a top (7); the outer wall of the shaft sleeve (6) being connected to a telescopic sleeve (8), the rear end of the slider (2) being connected to the telescopic sleeve (8), and the rear end of the telescopic sleeve (8) being connected to a telescopic device.

2. The motor shaft machining fixture according to claim 1, characterized in that: The base (1) is disc-shaped as a whole and has an open rear end. A receiving cavity is formed between the blocking cover (4) and the rear end of the base (1). The slide groove (101) is higher at the front and lower at the rear and is connected to the receiving cavity. The front end of the slider (2) protrudes from the front end of the base (1).

3. The motor shaft machining fixture according to claim 2, characterized in that: There are three slide grooves (101) in total, and the slide grooves (101) are distributed in a ring array along the axial center line of the base (1).

4. The motor shaft machining fixture according to claim 1, characterized in that: The slider (2) is provided with a limiting groove (201), the base (1) is connected with a limiting screw (102), and the limiting screw (102) is slidably matched with the limiting groove (201).

5. The motor shaft machining fixture according to claim 2, characterized in that: The front end of the telescopic sleeve (8) is connected to a fixed disk (801), the fixed disk (801) is located in the accommodating cavity, and the rear ends of the sliders (2) are connected to the fixed disk (801).

6. The motor shaft machining fixture according to claim 1, characterized in that: The telescopic sleeve (8) is slidably fitted on the outer wall of the shaft sleeve (6), and the rear end of the telescopic sleeve (8) is threadedly fitted with a fixing seat (9).

7. The motor shaft machining fixture according to claim 6, characterized in that: The telescopic device is an oil cylinder, and the fixed seat (9) is connected to the piston rod of the oil cylinder.

8. The motor shaft machining fixture according to claim 1, characterized in that: The front end of the shaft sleeve (6) is provided with a flange plate B (601), and the flange plate B (601) is connected to the front end of the base (1).

9. The motor shaft machining fixture according to claim 1, characterized in that: The top tip (7) is threadably engaged with the rear end of the shaft sleeve (6).

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