CN215846926U

CN215846926U - Clamp for turning piston thin-wall part

Info

Publication number: CN215846926U
Application number: CN202121959476.XU
Authority: CN
Inventors: 王友付; 陆宇凌; 赵军燧
Original assignee: Changshu Xinshenzhou Aerospace Technology Co ltd
Current assignee: Changshu Xinshenzhou Aerospace Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-18
Anticipated expiration: 2031-08-19

Abstract

The utility model discloses a clamp for turning a piston type thin-wall part, which comprises: the clamp main body comprises a chassis and a sleeve which are integrally formed; a plurality of first through grooves are formed in the sleeve so as to divide the sleeve into multiple parts; a plurality of second through grooves are formed in the chassis; the second through groove extends along the radial direction of the chassis; the second through groove is communicated with the first through groove end to end; the end of the sleeve departing from the chassis is tapered; the clamp cover is in threaded connection with the end, away from the base plate, of the sleeve, and the inner wall of the clamp cover is provided with a taper consistent with the taper of the sleeve so as to extrude the sleeve and enable the sleeve to be clamped on the peripheral surface of the piston rod; the clamp main body and the clamp cover are matched, so that the clamping operation of the piston thin-wall part is simple, the step of making a meter and aligning is omitted, the working procedure is shortened, the time is saved for large-batch production, the production efficiency is improved, the processing of multiple surfaces of a workpiece can be realized by one-time clamping, and the requirement on the correlation sizes of different planes is met.

Description

Clamp for turning piston thin-wall part

Technical Field

The utility model relates to the technical field of clamps, in particular to a clamp for turning a piston type thin-wall part.

Background

The traditional method for turning piston thin-wall parts adopts three-jaw soft clamp clamping and fixing, because the wall thickness of the piston is only 1.5-2.5mm, the thin-wall surface is easily damaged if the clamping force is too large, and a plurality of sections of inner holes are provided

The coaxiality requirement of the machining center is that the machining requirement is accurately met, the surface is required to be positioned, the operation is complex, and the production efficiency is not high; in addition, when the three-jaw soft clamp is used for clamping and fixing, the peripheral surface of the piston needs to be additionally clamped for machining, so that the requirement on the relevant sizes of different planes of the piston is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems that: the clamp for turning the piston thin-wall part is simple to operate, high in production efficiency and capable of achieving machining of multiple faces through one-time clamping.

In order to solve the main technical problems, the following technical scheme is adopted:

a clamp for turning a piston type thin-walled workpiece comprises:

the fixture main body is used for positioning and installing a workpiece and comprises a chassis and a sleeve which are integrally formed; a plurality of first through grooves extending along the axial direction of the sleeve are formed in the sleeve so as to divide the sleeve into multiple parts; a plurality of second through grooves which correspond to the first through grooves one to one are formed in the chassis; the second through groove extends along the radial direction of the chassis; the second through groove is communicated with the first through groove end to end; the end of the sleeve, which is far away from the chassis, has taper and is gradually reduced;

the clamp cover is used for locking the piston rod of the workpiece in the sleeve; the clamp cover is connected to the end, deviating from the base plate, of the sleeve in a threaded mode, and the taper consistent with the taper of the sleeve is arranged on the inner wall of the clamp cover to extrude the sleeve, so that the sleeve is clamped on the circumferential surface of the piston rod.

Preferably, the first through grooves are three and uniformly distributed on the circumferential surface of the sleeve.

Preferably, the end part of the sleeve close to the chassis is provided with an exhaust hole; the exhaust hole is partially overlapped with one of the first through grooves, and the diameter of the exhaust hole is larger than the width of the first through groove.

Preferably, the material of the clamp main body is brass material.

Preferably, the clamp further comprises a clamp base; the chassis is arranged on the clamp base; a positioning pin is arranged on the clamp base; the side, facing the clamp base, of the chassis is provided with a pin hole matched with the positioning pin.

Preferably, the end face of the chassis back to the positioning pin is provided with a small hole communicated with the pin hole.

Compared with the prior art, the clamping device applied to the piston type thin-wall part has the following advantages that:

(1) the clamp main body and the clamp cover are matched, so that the clamping operation of the piston thin-wall part is simple, the step of making a meter and aligning is omitted, the working procedure is shortened, the time is saved for large-batch production, the production efficiency is improved, meanwhile, the processing of a plurality of surfaces of the workpiece can be realized by one-time clamping, and the requirement on the correlation sizes of different planes is ensured;

(2) the clamp main body adopts circumferential positioning, the positioning precision is good, and meanwhile, the traditional three-jaw soft clamp is avoided, so that the workpiece damage caused by overlarge clamping force can be effectively avoided;

(3) the anchor clamps main part includes integrated into one piece's sleeve and chassis, has seted up the exhaust hole on the sleeve, has seted up the aperture on the chassis, and exhaust hole and aperture all are used for quick exhaust.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic view of the overall structure;

FIG. 2 is an exploded view of the overall structure;

FIG. 3 is a schematic structural view of the clamp body;

FIG. 4 is a schematic top view of the fixture body;

fig. 5 is a schematic view of the cross-sectional structure a-a in fig. 4.

In the figure: 1 is the work piece, 2 is the anchor clamps main part, 21 is the chassis, 22 is the sleeve, 23 is first logical groove, 24 is the second logical groove, 25 is the exhaust hole, 26 is the pinhole, 27 is the aperture, 3 is the anchor clamps lid, 4 is the anchor clamps base, 41 is the locating pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

The first embodiment,

Referring to fig. 1-5, a clamp for turning a piston-type thin-walled workpiece includes a clamp body 2 and a clamp cover 3.

The clamp main body 2 is used for positioning and installing the workpiece 1; the clamp main body 2 comprises a chassis 21 and a sleeve 22 which are integrally formed; a plurality of first through grooves 23 extending along the axial direction of the sleeve 22 are formed on the sleeve 22 so as to divide the sleeve 22 into a plurality of parts; preferably, the first through grooves 23 are three in number and are uniformly distributed on the circumferential surface of the sleeve 22, so as to divide the sleeve 22 into three parts; a plurality of second through grooves 24 corresponding to the first through grooves 23 one by one are formed in the chassis 21; the second through groove 24 extends along the radial direction of the bottom plate 21; the second through groove 24 is communicated with the first through groove 23 end to end; the arrangement of the first through groove 23 and the second through groove 24 enables the three parts of the sleeve 22 to be easily deformed so as to mutually approach and wrap the end part of the piston rod of the workpiece 1; the end of the sleeve 22 facing away from the chassis 21 is tapered and tapered.

A clamp cover 3 for locking the piston rod of the workpiece 1 within the sleeve 22; the clamp cover 3 is in threaded connection with the end, departing from the chassis 21, of the sleeve 22, the inner wall of the clamp cover 3 is provided with a taper consistent with the taper of the sleeve 22 so as to extrude the sleeve 22, the sleeve 22 is clamped on the peripheral surface of the piston rod, namely the inner wall of the clamp cover 3 is provided with an internal thread, the sleeve 22 is provided with an external thread, the external thread on the outer cylinder is positioned at the tail part of the taper of the sleeve 22, namely the maximum end of the taper, and the external thread on the sleeve 22 is connected with the taper end of the sleeve 22 end to end under normal conditions; the clamp body 2 is extruded by the taper on the inner side of the clamp cover 3, so that clamping force is generated by three parts of the sleeve 22, the piston rod is tightly embraced therein, excessive clamping force is avoided, and the piston rod can be effectively positioned and fixed; in order to avoid damage to the workpiece 1, the clamp body 2 is made of brass.

The end part of the sleeve 22 close to the chassis 21 is provided with a vent hole 25, and the vent hole 25 is positioned on the circumferential surface of the sleeve 22 and penetrates through the wall thickness of the sleeve 22; the vent hole 25 is partially overlapped with one of the first through grooves 23, the diameter of the vent hole 25 is larger than the width of the first through groove 23, and the vent hole 25 is arranged to discharge air in the clamp body 2 more quickly when the piston rod is pressed into the sleeve 22.

Example II,

Referring to fig. 1-5, the difference between the second embodiment and the first embodiment is that the clamp apparatus further includes a clamp base 4 on the basis of the first embodiment; the chassis 21 is detachably arranged on the clamp base 4 through a plurality of screws, and the clamp base 4 is connected with a machine tool through a plurality of screws; a positioning pin 41 is arranged on the clamp base 4; the side, facing the clamp base 4, of the chassis 21 is provided with a pin hole 26 matched with the positioning pin 41, and the positioning pin 41 is inserted into the pin hole 26, so that the positioning of the chassis 21 and the clamp base is realized; the end face of the chassis 21 opposite to the positioning pin 41 is provided with a small hole 27 communicated with the pin hole 26, and the small hole 27 is provided to facilitate the exhaust when the positioning pin 41 is inserted.

The working process of the utility model is as follows: when the piston rod clamping device is used, the end part of the piston rod, which is far away from the piston, penetrates through the clamp cover 3 and then is inserted into the sleeve 22, the clamp cover 3 is rotated, the clamp cover 3 is in threaded connection with the sleeve 22, and in the process of rotating the clamp cover 3, the taper of the clamp cover 3 gradually extrudes three parts of the sleeve 22, so that the sleeve 22 clamps the piston rod; the jig main body 2 to which the workpiece 1 is attached to the jig base 4 by screws, and then the jig base 4 is attached to the machine tool.

It should be noted that the terms "upper, lower, left, right, inner and outer" in the present invention are defined based on the relative positions of the components in the drawings, and are only used for clarity and convenience of the technical solution, and it should be understood that the application of the terms of orientation does not limit the scope of the present application.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a anchor clamps for piston class thin wall spare lathe work which characterized in that includes:

2. The clamp for turning the piston type thin-walled workpiece according to claim 1, wherein the number of the first through grooves is three, and the first through grooves are uniformly distributed on the circumferential surface of the sleeve.

3. The clamp for turning the piston type thin-walled workpiece according to claim 1, wherein an exhaust hole is formed in the end part, close to the base plate, of the sleeve; the exhaust hole is partially overlapped with one of the first through grooves, and the diameter of the exhaust hole is larger than the width of the first through groove.

4. The clamp for turning the piston type thin-walled workpiece according to claim 1, wherein the clamp body is made of brass.

5. The clamp for turning the piston type thin-walled workpiece according to any one of claims 1 to 4, further comprising a clamp base; the chassis is arranged on the clamp base; a positioning pin is arranged on the clamp base; the side, facing the clamp base, of the chassis is provided with a pin hole matched with the positioning pin.

6. The clamp for turning the piston type thin-walled workpiece according to claim 5, wherein the end face of the base plate, which faces away from the positioning pin, is provided with a small hole communicated with the pin hole.