An accurate positioning device for a vehicle rotating shaft

Abstract

The utility model discloses a kind of automobile rotating shaft accurate positioning devices, including chuck, chuck is provided with dog, the dog clamping end is provided with buffer structure;The buffer structure includes rubber pad, the rubber pad is trapezoidal, and the rubber pad is clamped with the dog clamping end cooperation.The rubber pad is clamped with the dog clamping end, rubber pad is in the state of distraction, arc-shaped groove is opened in the rubber pad abutting segment inner side, the utility model has the advantage that rubber pad is clamped in dog clamping end by distraction, and rubber pad contacts automobile rotating shaft and protects.

Description

Technical Field

[0001] This utility model relates to the field of lathe machining technology, specifically to a precise positioning device for automotive shafts. Background Technology

[0002] A lathe is a machine tool that primarily uses a cutting tool to machine rotating workpieces. Drills, reamers, taps, dies, and knurling tools can also be used on a lathe for corresponding machining operations.

[0003] The car axle is clamped in the chuck of a lathe and precisely positioned by the jaws. The lathe rotates the chuck, causing the car axle held by the jaws to rotate as well. The lathe's cutting tool then processes the rotating car axle. The clamping ends of the jaws are in direct contact with the circumference of the car axle, and the metal-to-metal contact can easily cause deformation of the axle's circumference, affecting its quality.

[0004] In view of this, we propose a precise positioning device for automotive shafts. Utility Model Content

[0005] The purpose of this invention is to provide a precise positioning device for automotive shafts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precise positioning device for an automobile shaft, comprising a chuck, wherein the chuck is provided with jaws, and the jaws are provided with a buffer structure at their clamping ends;

[0007] The buffer structure includes a rubber pad, which is trapezoidal and engages with the gripper end.

[0008] Preferably, the rubber pad is clamped to the gripper end, and the rubber pad is in an open state.

[0009] Preferably, an arc-shaped groove is formed on the inner side of the rubber pad contact section.

[0010] Preferably, the buffer structure further includes connecting strips and fixing strips. The two connecting strips are respectively fixedly disposed at both ends of the rubber pad, and the two fixing strips are respectively fixedly disposed on both sides of the claw clamping end. A limiting strip is fixedly disposed on the outer side of the fixing strip. The connecting strip is inserted into the space between the fixing strip and the limiting strip. A spring is fixedly disposed on the inner side of the outer extension of the limiting strip, and the spring abuts against the connecting strip.

[0011] Preferably, a groove is formed on the inner side of the outer extension of the limiting strip.

[0012] Preferably, the spring is arc-shaped, and the arched section of the spring abuts against the groove opened on the outer side of the connecting strip.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting a rubber pad and an arc-shaped groove, has the advantages of the rubber pad being held by the claw by the spread rubber pad and the rubber pad contacting the car shaft for protection, thus solving the problem that the compression between metals can easily cause deformation of the circumference of the car shaft and affect the quality of the car shaft.

[0015] 2. This utility model, by setting connecting strips, fixing strips, limiting strips, spring pieces and slots, has the advantages of further fixing the rubber pad, keeping the rubber pad fixed and stable, and facilitating the installation and removal of the rubber pad. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation of the buffer structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the buffer structure of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the buffer structure of this utility model;

[0020] Figure 5 This is an exploded view of the buffer structure of this utility model.

[0021] In the diagram: 100, chuck; 200, chuck jaws; 300, buffer structure;

[0022] 301. Rubber pad; 302. Connecting strip; 303. Fixing strip; 304. Limiting strip; 305. Spring piece;

[0023] 3011, Arc-shaped groove;

[0024] 3021, Card slot;

[0025] 3041, Groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1, please refer to Figures 1 to 3An embodiment of this utility model is provided: a precise positioning device for an automobile shaft, including a chuck 100, a jaw 200 provided on the chuck 100, the jaw 200 being movably connected to the chuck 100, and a buffer structure 300 provided at the clamping end of the jaw 200.

[0028] The buffer structure 300 includes a rubber pad 301, which is trapezoidal in shape. The rubber pad 301 engages with the clamping end of the claw 200. When the rubber pad 301 is in an open state, an arc-shaped groove 3011 is provided on the inner side of the abutting section of the rubber pad 301. When the rubber pad 301 is in an open state, the arc-shaped groove 3011 is in an open state. Under the action of the open arc-shaped groove 3011, the two ends of the abutting section of the rubber pad 301, along with the two inclined sections of the rubber pad 301, have an inward clamping tendency. The open rubber pad 301 is clamped at the clamping end of the claw 200, and the open trapezoidal rubber pad 301 has a reverse force, which clamps and positions the clamping end of the claw 200.

[0029] This utility model, by setting a rubber pad 301 and an arc-shaped groove 3011, has the advantage that the rubber pad 301, which is spread out, is stuck at the clamping end of the claw 200, and the rubber pad 301 contacts the car shaft for protection. This solves the problem that the compression between metals can easily cause deformation of the circumference of the car shaft, affecting the quality of the car shaft.

[0030] Example 2, please refer to Figures 2 to 5 This utility model provides an embodiment of a precise positioning device for an automotive axle. The buffer structure 300 further includes connecting strips 302 and fixing strips 303. Two connecting strips 302 are respectively fixedly disposed at both ends of a rubber pad 301. Two fixing strips 303 are respectively fixedly disposed on both sides of the clamping end of a claw 200. A limiting strip 304 is fixedly disposed on the outer side of the fixing strip 303. The connecting strip 302 is inserted into the space between the fixing strip 303 and the limiting strip 304. A spring piece 305 is fixedly disposed on the inner side of the outer extension of the limiting strip 304, and the spring piece 305 abuts against the connecting strip 302. The spring piece 305 is arc-shaped, and its arched section abuts against a groove 3021 opened on the outer side of the connecting strip 302. The arc-shaped spring piece 305 is easily bent when compressed, and the abutment between the spring piece 305 and the groove 3021 further fixes the rubber pad 301. A groove 3041 is provided on the inner side of the outer extension of the limiting strip 304, and the groove 3041 provides space for the spring sheet 305 to be compressed.

[0031] This utility model, by setting a connecting strip 302, a fixing strip 303, a limiting strip 304, a spring piece 305, and a slot 3021, has the advantages of further fixing the rubber pad 301, keeping the rubber pad 301 fixed and stable, and facilitating the installation and removal of the rubber pad 301.

[0032] Working principle: After the rubber pad 301 is expanded, it is snapped into the clamping end of the jaw 200. The connecting strip 302 is inserted into the space between the fixing strip 303 and the limiting strip 304. The arc-shaped spring piece 305 is squeezed and bent during insertion until the connecting strip 302 is fully inserted into the space between the fixing strip 303 and the limiting strip 304. The arched section of the spring piece 305 abuts against the slot 3021. When the car shaft is inserted into the chuck 100, the multiple jaws 200 clamp the car shaft, and the rubber pad 301 contacts the car shaft and holds it in place.

[0033] When disassembling an excessively worn rubber pad 301, simply pull out the rubber pad 301. The connecting strip 302 will be pulled out from the space between the fixing strip 303 and the limiting strip 304, and the spring piece 305 will be squeezed out of the slot 3021. Then, replace it with a new rubber pad 301.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A precise positioning device for automotive axles, characterized in that: Includes a chuck (100), wherein the chuck (100) is provided with jaws (200), and the clamping end of the jaws (200) is provided with a buffer structure (300); The buffer structure (300) includes a rubber pad (301), which is trapezoidal and engages with the clamping end of the claw (200).

2. The precise positioning device for an automobile shaft according to claim 1, characterized in that: The rubber pad (301) is clamped by the gripper (200), and the rubber pad (301) is in an open state.

3. The precise positioning device for an automobile shaft according to claim 2, characterized in that: The rubber pad (301) has an arc-shaped groove (3011) on the inner side of the contact section.

4. The precise positioning device for an automobile shaft according to claim 1, characterized in that: The buffer structure (300) further includes a connecting strip (302) and a fixing strip (303). The two connecting strips (302) are respectively fixedly disposed at both ends of the rubber pad (301), and the two fixing strips (303) are respectively fixedly disposed on both sides of the clamping end of the claw (200). A limiting strip (304) is fixedly disposed on the outer side of the fixing strip (303). The connecting strip (302) is inserted into the space between the fixing strip (303) and the limiting strip (304). A spring piece (305) is fixedly disposed on the inner side of the outer extension of the limiting strip (304). The spring piece (305) abuts against the connecting strip (302).

5. The precise positioning device for an automobile shaft according to claim 4, characterized in that: The inner side of the extension of the limiting strip (304) is provided with a groove (3041).

6. The precise positioning device for an automobile shaft according to claim 5, characterized in that: The spring piece (305) is arc-shaped, and the arched section of the spring piece (305) abuts against the slot (3021) opened on the outer side of the connecting strip (302).

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