Fixture for machining tubular shaft

Abstract

The utility model relates to the technical field of clamps, and discloses a clamp for machining a tubular shaft, which comprises a vertical seat, a connecting seat is arranged at the upper end of the vertical seat, a sleeve body is mounted on the connecting seat, at least three strip-shaped grooves are formed in the outer side surface of the sleeve body, claw bodies are mounted in the strip-shaped grooves, and an elastic piece for pushing the claw bodies to rotate towards the inner side of the sleeve body is mounted on the sleeve body; the two ends of the tubular shaft are clamped through the two sets of clamps, and the tubular shaft is fixed; the elastic piece comprises a plurality of fixing blocks, push rods and springs, the fixing blocks correspond to the strip-shaped grooves in a one-to-one mode, the fixing blocks are welded to the outer surface of the sleeve body, guide holes corresponding to the strip-shaped grooves are formed in one sides of the fixing blocks, the push rods are installed in the guide holes, the springs are connected to the push rods in a sleeved mode, and the springs push the push rods to move towards the sides of the corresponding claw bodies. According to the utility model, the end part of the tubular shaft is firstly limited through the arranged elastic piece, the tubular shaft is kept in a centered state, and then the end part of the tubular shaft is fixed by tightening the rotating piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, specifically is a pipe shaft processing clamp. BACKGROUND

[0002] With the continuous development of modern industry, pipe shaft is more and more widely used in various fields. In the field of aerospace, as an important component of aircraft engine, the machining precision of pipe shaft is directly related to the performance and safety of engine.

[0003] In the traditional pipe shaft machining fixture, usually adopt relatively simple and direct fixed mode. Some fixtures only simply use bolt or chuck to fix pipe shaft. This fixed mode often can not guarantee the centering state of pipe shaft in the fixture. In the machining process, if the position of pipe shaft deviates from the center, it will lead to the decline of machining precision. For example, when turning the outer circle of pipe shaft, the eccentricity of pipe shaft will make the roundness of outer circle not meet the requirement, produce ellipse or irregular shape, affect the quality of pipe shaft. SUMMARY

[0004] To solve the above technical problem, the utility model is realized through the following technical scheme:

[0005] The utility model discloses a pipe shaft processing clamp, including stand, the upper end of stand is connecting seat, is installed with sleeve body on connecting seat, at least three strip grooves are seted up on the outside of sleeve body, installs the claw body in strip groove, is installed with the elastic member of the push claw body to the inboard of sleeve body on sleeve body;

[0006] Through two groups of fixtures, the pipe shaft both ends are clamped, and the pipe shaft is fixed.

[0007] Further, the elastic member includes fixed block, push rod and spring, the fixed block is equipped with several, the fixed block corresponds to strip groove one to one, and the fixed block is welded on the outer surface of sleeve body, and the side of fixed block is equipped with the guide hole corresponding to strip groove, and the push rod is installed in the guide hole, and the spring is sleeved on the push rod, and the spring pushes the end of push rod to move to the axis of sleeve body, and pushes the claw body around the connecting end in strip groove to rotate, until the vertical surface of claw body connecting end and the vertical side surface of strip groove are pasted, and the claw body is positioned;

[0008] When not clamping pipe shaft, the bottom end of push rod is equipped with the step surface and limits the end of spring, and the end of push rod is moved to the axis of sleeve body by the spring, and the claw body around the connecting end in strip groove is pushed to rotate, until the vertical surface of claw body connecting end and the vertical side surface of strip groove are pasted, and the claw body is positioned;

[0009] When inserting pipe shaft, the end of pipe shaft pushes the end of claw body and rotates upwards, so that the step surface provided on the end of push rod compresses the spring.

[0010] Further, the other end of the seat is provided with a rotating part, the rotating part is installed through the connecting seat and matched with the sleeve body, a push block is installed in the sleeve body, the moving rotating part pushes the push block to be close to the connecting end of the claw body;

[0011] The three claw bodies tighten the end part of the pipe shaft;

[0012] Since the end part of the sleeve body away from the claw body is provided with an internal thread, the internal thread is matched with the external thread arranged on the rotating part;

[0013] When clamping is needed, the rotating part is rotated to make the rotating part extend into the internal part of the sleeve body, so that the push block moves to the side of the connecting end of the claw body;

[0014] Since the end part of the push block close to the claw body is a conical surface, with the approach of the push block, the end part of the push block pushes the three claw bodies to be close to each other, so that the end part of the pipe shaft is clamped;

[0015] After the pipe shaft is fixed, the surface of the pipe shaft is conveniently processed.

[0016] Further, when the connecting seat and the sleeve body are fixedly connected;

[0017] A plurality of screw holes are arranged on the connecting surface of the connecting seat;

[0018] One end of the sleeve body is provided with a stop ring, a plurality of through holes are arranged on the stop ring and are correspondingly distributed with the screw holes, and the bolts passing through the through holes are installed in the screw holes;

[0019] When the connecting seat and the sleeve body are fixedly connected, the fixed pipe shaft cannot rotate, the pipe shaft is prevented from moving in the drilling process, and the processing precision is improved.

[0020] Further, when the connecting seat and the sleeve body are rotatably connected;

[0021] One end of the sleeve body is provided with a convex ring, a bearing is sleeved on the outer side of the convex ring and is installed in the groove hole arranged on the installation surface of the connecting seat;

[0022] When the connecting seat and the sleeve body are rotatable, if a ring groove needs to be arranged on the local outer surface of the pipe shaft or the pipe shaft needs to be polished, the pipe shaft is driven to rotate by rotating the sleeve body, and the processing is facilitated.

[0023] The utility model has the following beneficial effects:

[0024] The utility model discloses the elastic element is arranged to realize the location of the end part of the pipe shaft first, keep the pipe shaft in the central state, and realize the fixation of the end part of the pipe shaft by tightening the rotating part.

[0025] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings described in the following are only some embodiments of the present application, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0027] Figure 1 It is a structural schematic diagram of the present application;

[0028] Figure 2 It is a partial schematic diagram of the present application;

[0029] Figure 3 It is a schematic diagram of the sleeve body of the present application;

[0030] Figure 4 It is a schematic diagram of the sleeve body and the pipe shaft connection of the present application;

[0031] Figure 5 It is a schematic diagram of the first embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the first embodiment connection of the present application;

[0033] Figure 7 It is a schematic diagram of the second embodiment of the present application;

[0034] Figure 8 It is a schematic diagram of the second embodiment connection of the present application;

[0035] In the drawings, the component list represented by each number is as follows:

[0036] In the drawings: 1, stand; 101, connecting seat; 102, screw hole; 103, slot hole; 2, sleeve body; 201, strip-shaped slot; 202, retaining ring; 203, through hole; 204, protruding ring; 3, rotating piece; 4, push block; 5, claw body; 6, fixed block; 7, push rod; 8, spring; 9, pipe shaft; 10, bearing. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the present application.

[0038] Please refer to Figures 1-4The utility model discloses a kind of clamps for pipe shaft machining, including pedestal 1,

[0039] The upper end of pedestal 1 is connecting seat 101, connecting seat 101 is installed with sleeve 2, at least three strip grooves 201 are formed on the outer side of sleeve 2, claw body 5 is installed in strip groove 201, and elastic member for rotating pawl body 5 to the inside of sleeve 2 is installed on sleeve 2.

[0040] Two ends of pipe shaft 9 are clamped by two sets of clamps, and pipe shaft 9 is fixed.

[0041] Elastic member includes fixed block 6, push rod 7 and spring 8, fixed block 6 is provided with several, fixed block 6 corresponds to strip groove 201 one by one, fixed block 6 is welded on the outer surface of sleeve 2, one side of fixed block 6 is provided with guide hole corresponding to strip groove 201, push rod 7 is installed in guide hole, and spring 8 is sleeved on push rod 7, and spring 8 pushes push rod 7 to move to the side of corresponding claw body 5.

[0042] When pipe shaft 9 is not clamped, the bottom end of push rod 7 is provided with step surface to limit the end of spring 8, the end of push rod 7 is moved to the axis of sleeve 2 by the installed spring 8, and claw body 5 is rotated around the connecting end in strip groove 201, until the vertical surface of the connecting end of claw body 5 is attached to the vertical side of strip groove 201, and claw body 5 is limited.

[0043] When pipe shaft 9 is inserted, the end of pipe shaft 9 pushes the end of claw body 5 to rotate upward, so that the step surface provided at the end of push rod 7 compresses spring 8.

[0044] The other end of pedestal 1 is provided with rotating member 3, rotating member 3 passes through connecting seat 101 and is matched and installed with sleeve 2, push block 4 is installed in the inside of sleeve 2, and rotating member 3 pushes push block 4 to be close to the connecting end of claw body 5.

[0045] Three claw bodies 5 are tightened to clamp the end of pipe shaft 9.

[0046] Since the end of sleeve 2 away from claw body 5 is provided with internal thread, the internal thread is matched with external thread provided with rotating member 3.

[0047] When clamping is needed, rotating rotating member 3 realizes that rotating member 3 extends into the inside of sleeve 2, so as to push push block 4 to move to the side of the connecting end of claw body 5.

[0048] Since the end of push block 4 close to claw body 5 is conical surface, with the approach of push block 4, the end of push block 4 pushes three claw bodies 5 to approach each other, so as to clamp the end of pipe shaft 9.

[0049] After fixing pipe shaft 9, it is convenient to process the surface of pipe shaft 9.

[0050] Embodiment one

[0051] As Figures 5-6 shown, the connecting seat 101 is fixedly connected with the sleeve 2;

[0052] A plurality of screw holes 102 are formed on the connecting surface of the connecting seat 101;

[0053] One end of the sleeve 2 is provided with a stop ring 202, a plurality of through holes 203 are formed on the stop ring 202, the through holes 203 are correspondingly distributed with the screw holes 102, and the bolts passing through the through holes 203 are installed in the screw holes 102;

[0054] When the connecting seat 101 is fixedly connected with the sleeve 2, the fixed pipe shaft 9 cannot rotate, and in the process of drilling, the pipe shaft 9 is prevented from moving, and the machining precision is improved.

[0055] Embodiment two

[0056] The difference from the embodiment one is as follows, as Figures 7-8 shown, the connecting seat 101 is rotatably connected with the sleeve 2;

[0057] One end of the sleeve 2 is provided with a convex ring 204, the convex ring 204 is sleeved with the bearing 10 on the outside, and is installed in the groove hole 103 formed on the mounting surface of the connecting seat 101;

[0058] After the connecting seat 101 is rotatably connected with the sleeve 2 and the pipe shaft 9 is fixed, if the local outer surface of the pipe shaft 9 needs to be formed with a ring groove or polished, the pipe shaft 9 is driven to rotate by rotating the sleeve 2, and the machining is facilitated.

[0059] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and specifically described in the specification, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A pipe shaft machining clamp comprising a stand (1), characterized in that: the upper end of the stand (1) is a connecting seat (101); a sleeve body (2) is installed on the connecting seat (101); at least three strip-shaped grooves (201) are formed on the outer side of the sleeve body (2), and a claw body (5) is installed in each strip-shaped groove (201); and an elastic member is installed on the sleeve body (2) to push the claw body (5) to rotate to the inner side of the sleeve body (2).

2. The pipe shaft machining clamp according to claim 1, characterized in that: The elastic member comprises a fixing block (6), a push rod (7) and a spring (8); a plurality of fixing blocks (6) are arranged, and each fixing block (6) corresponds to a strip-shaped groove (201); the fixing block (6) is welded on the outer surface of the sleeve body (2); one side of the fixing block (6) is provided with a guide hole corresponding to the strip-shaped groove (201), the push rod (7) is installed in the guide hole, and the spring (8) is sleeved on the push rod (7); the spring (8) pushes the push rod (7) to move to the side of the corresponding claw body (5).

3. The clamp for machining a tube shaft according to claim 1, characterized in that: The other end of the stand (1) is provided with a rotating member (3), and the rotating member (3) is installed in cooperation with the sleeve body (2) through the connecting seat (101); a push block (4) is installed in the sleeve body (2), and the rotating member (3) pushes the push block (4) to move close to the connecting end of the claw body (5).

4. The clamp for machining a tube shaft according to claim 1, characterized by: The three claw bodies (5) are tightened to clamp the end of the pipe shaft (9).

5. The pipe shaft machining clamp according to claim 1, characterized in that: When the connecting seat (101) and the sleeve body (2) are fixedly connected; a plurality of screw holes (102) are formed on the connecting surface of the connecting seat (101); one end of the sleeve body (2) is provided with a check ring (202), a plurality of through holes (203) are formed in the check ring (202), the through holes (203) are distributed correspondingly with the screw holes (102), and a bolt passing through the through hole (203) is installed in the screw hole (102).

6. The pipe shaft machining clamp according to claim 1, characterized in that: When the connecting seat (101) and the sleeve body (2) are rotationally connected; one end of the sleeve body (2) is provided with a convex ring (204), the outer side of the convex ring (204) is sleeved with a bearing (10), and the bearing (10) is installed in a groove hole (103) formed on the mounting surface of the connecting seat (101).

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