CN213945626U

CN213945626U - Fixed frock of finish machining excircle

Info

Publication number: CN213945626U
Application number: CN202022972120.1U
Authority: CN
Inventors: 诸成光; 孙驾; 王岩
Original assignee: Shanghai Zhikewei Machinery Manufacturing Co ltd
Current assignee: Shanghai Zhikewei Machinery Manufacturing Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-13
Anticipated expiration: 2030-12-11

Abstract

The application discloses frock is fixed to finish machining excircle for the excircle of fixed tube-shape thin wall work piece. The finish machining excircle fixing tool comprises a supporting mandrel, a supporting top plate and a compression nut. The support dabber is provided with first step, first transition portion and second step. The workpiece is supported by the first step, and one end of the workpiece is fixed by the first transition part. The supporting top plate is sleeved on the second step and is provided with a third step and a second transition part. And supporting the workpiece through the third step, and fixing the other end of the workpiece through the third transition part. The supporting position of the supporting top plate is adjusted through the compression nut. The fixing tool can effectively fix the workpiece, can finish the outer circular surface of the workpiece at one time after the workpiece is fixed, is high in working efficiency, cannot damage the workpiece, and can help enterprises to greatly save cost.

Description

Fixed frock of finish machining excircle

Technical Field

The utility model relates to an auxiliary processing equipment technical field especially relates to a frock is fixed to finish machining excircle for fixed tube-shape thin wall work piece, with the finish machining the outer disc of work piece.

Background

With the increasing refinement of the processing level of the manufacturing industry in China, the processing speed and the processing precision of the traditional parts are better and better. However, for some cylindrical thin-walled workpieces requiring finish machining of the outer circular surface, multiple clamping is generally required to complete the machining. Meanwhile, in the machining process, the workpiece is easy to deform, the machining speed is influenced, resources are wasted, and the investment cost of an enterprise is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a frock is fixed to finish machining excircle can effectively fix the work piece to the outer disc of the disposable finish machining work piece behind fixed work piece, work efficiency is high, not fragile work piece.

Another object of the utility model is to provide a frock is fixed to finish machining excircle, simple structure, low in manufacturing cost, cost of saving enterprise that can be great.

Another object of the utility model is to provide a frock is fixed to finish machining excircle can adjust the packing force of roof to the work piece in a flexible way through gland nut to good protection work piece.

Another object of the utility model is to provide a frock is fixed to finish machining excircle can adjust the packing force of roof to the work piece in a flexible way through gland nut to be applicable to the processing of multiple tube-shape thin wall work piece, application scope is extensive.

Another object of the utility model is to provide a frock is fixed to finish machining excircle, the setting through the centre hole can make this fixed frock good processing that is applicable to the lathe.

For realizing the utility model discloses above at least one purpose, the utility model provides a frock is fixed to finish machining excircle for fixed tube-shape thin wall work piece, wherein fixed frock includes:

the supporting mandrel is provided with a fixed end and a supporting end which are opposite to each other in the axial direction, the outer ring of the supporting mandrel is provided with a first step and at least one second step which are gradually reduced from the fixed end to the supporting end, and the outer ring of the fixed end is provided with an annular first transition part connected with the first step so as to fix the end part of the workpiece through the first transition part while the first step supports one end of the workpiece; and

and the supporting top plate is a circular ring-shaped plate, the inner ring of the supporting top plate is matched with any one of the second steps, the outer ring of the supporting top plate is provided with a third step to support the other end of the workpiece, and the end, far away from the fixed end, of the outer ring of the supporting top plate is provided with an annular second transition part connected with the third step to fix the other end of the workpiece.

Preferably, the first transition portion and the second transition portion are both in a chamfer type structure to fix a workpiece with an inclined surface at the end portion.

Preferably, the first transition portion and/or the second transition portion is/are of a curved surface structure so as to fix a workpiece with a curved surface at an end portion.

Preferably, the first transition part is of a chamfer type structure, and the second transition part is of a curved surface type structure; or the first transition part is of a curved surface type structure, and the second transition part is of a chamfer angle type structure.

Preferably, the supporting top plate is provided with a plurality of process holes along the circumferential direction, so that the weight of the supporting top plate is reduced, and the supporting top plate is convenient to grab.

Preferably, the fixing tool further comprises a compression nut, the compression nut is matched with the supporting top plate and is arranged on the outer ring of the second step, the compression nut is located on one side, far away from the fixed end, of the supporting top plate, the second step is correspondingly provided with an external thread, and therefore the pressing force of the supporting top plate on the workpiece is adjusted through rotation of the compression nut.

Preferably, the outer ring of the second step provided with the external thread is further provided with a relief groove to limit the length distance of the external thread.

Preferably, there are two second steps, wherein the inner ring of the top supporting plate is sleeved on the second step far away from the fixed end.

Preferably, there are two second steps, wherein the inner ring of the top supporting plate is sleeved on the second step close to the fixed end.

Preferably, a process cavity is arranged in the center of one side of the fixed end, which is far away from the supporting end, so as to reduce the weight of the supporting mandrel, and a center of one side of the supporting end, which is far away from the fixed end, is provided with a center hole, so as to facilitate the support of a center tailstock of a machine tool.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a front cross-sectional view of a finishing outer circle fixing tool according to a preferred embodiment of the present application.

Fig. 2 shows a schematic structural view of a support mandrel in the present application.

Fig. 3 shows a schematic view of the structure of the supporting roof in the present application.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the disclosure of the specification, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships that are based on those shown in the drawings, which are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms should not be construed as limiting the invention.

With reference to fig. 1 to 3 of the specification, a cylindrical fixing tool for finish machining according to a preferred embodiment of the present invention is used for fixing a cylindrical thin-walled workpiece to finish machine an outer circular surface of the workpiece 100, wherein the fixing tool includes a supporting mandrel 10 and a supporting top plate 20.

The support mandrel 10 has a fixed end 11 and a support end 12 opposite to each other in the axial direction, wherein the fixed end 11 is located at the left end, and the support end 12 is located at the right end. The outer ring of the support mandrel 10 is provided with a first step 13 and at least one second step 14 which are gradually reduced from the left end to the right end, and the outer ring of the fixed end 11 is provided with an annular first transition portion 15 connected with the first step 13, so that the first step 13 supports the left end of the workpiece 100, and the first transition portion 15 fixes the left end of the workpiece 100 to prevent the workpiece 100 from moving to the left side. Obviously, it can be understood by those skilled in the art that the first transition portion 15 is matched with the inner ring of the left end of the workpiece 100, so as to support the workpiece 100 and limit the left end of the workpiece 100.

It should be noted that the number of the second steps 14 is determined according to the actual processing requirement, for example, according to the length of the workpiece 100 or the shape of the workpiece 100, and the number is not specifically limited herein, and one second step 14 may be provided, or two or more second steps 14 may be provided, and are mainly used for placing the top support plate 20 to support the right end portion of the workpiece 100.

The supporting top plate 20 is a circular ring-shaped plate. The inner ring of the top supporting plate 20 is matched with any one of the second steps 14, and is used for being sleeved on the second step 14 to support the right end part of the workpiece 100. The outer ring of the supporting top plate 20 is provided with a third step 21, and the outer ring of the supporting top plate 20 is far away from one end of the fixed end 11 and is provided with an annular second transition part 22 connected with the third step 21. The right end of the workpiece 100 is supported by the third step 21, and the right end of the workpiece 100 is fixed by the second transition portion 22, preventing the workpiece 100 from moving to the right side. Similarly, it will be understood by those skilled in the art that the second transition portion 22 is engaged with the inner ring of the right end of the workpiece 100, so as to support the workpiece 100 and limit the right end of the workpiece 100.

In the fixing process, the workpiece 100 is firstly gradually sleeved on the outer ring of the support mandrel 10 from the right end of the support mandrel 10 until the first transition portion 15 is reached, at this time, the left end of the workpiece 100 is supported at the first step 13, and then according to the length of the workpiece 100 and/or the support requirement for the workpiece 100, the support top plate 20 is sleeved on the corresponding second step 14 to support the right end of the workpiece 100, and the right end of the workpiece 100 is limited by the second transition portion 22, so that the workpiece 100 is completely fixed. Since the outer circumferential surface of the workpiece 100 is completely exposed after the workpiece 100 is fixed, the outer circumferential surface of the workpiece 100 can be processed conveniently at one time. It should be noted that, during the machining process, since the workpiece 100 is subjected to mainly radial force and axial force is small, the inner ring of the supporting top plate 20 may be in interference fit with the corresponding second step 14 to fix the supporting top plate 20.

As a preferred embodiment of the present invention, the first transition portion 15 and the second transition portion 22 are both of a chamfer type structure, and the fixed end portion is a workpiece having an inclined surface.

The first transition portion 15 and the second transition portion 22 may have a curved surface structure to fix a workpiece having a curved surface at an end portion.

In addition, the first transition portion 15 may have a chamfered structure, and the second transition portion 22 may have a curved structure; alternatively, the first transition portion 15 is a curved surface type structure, and the second transition portion 22 is a chamfered structure.

As a preferred embodiment of the present invention, the supporting top plate 20 is provided with a predetermined number of the fabrication holes 23 along the circumferential direction, so as to reduce the weight of the supporting top plate 20 and facilitate the grabbing of the supporting top plate 20, wherein preferably, six or eight fabrication holes 23 are uniformly provided along the circumferential direction.

As a preferred embodiment of the present invention, the fixing tool further includes a compression nut 30. The compression nut 30 is matched with the supporting top plate 20 and is arranged on the outer ring of the second step 14, and the compression nut 30 is located on one side, away from the fixed end 11, of the supporting top plate 20. The second step 14 is correspondingly provided with an external thread 141 to screw the compression nut 30. Specifically, by rotating the compression nut 30, the pressing force of the top support plate 20 against the workpiece 100 can be flexibly adjusted, thereby preventing the workpiece 100 from being deformed by pressing during the fixing process; in addition, by rotating the compression nut 30, the position of the top support plate 20 can be adjusted to support the top support plate 20 at different positions of the workpiece 100, or a workpiece having a smaller length for the same specification can be fixed and supported.

It is worth mentioning that the outer ring of the second step 14 provided with the external thread 141 is further provided with a relief 142 to limit the length distance of the external thread 141.

In a specific application, there are two second steps 14, wherein the inner ring of the top supporting plate 20 is sleeved on the second step 14 far away from the fixed end 11 (as shown in fig. 1), or the inner ring of the top supporting plate 20 is sleeved on the second step 14 near the fixed end 11, so as to support workpieces with different lengths or support workpieces at different positions of the same workpiece.

As a preferred embodiment of the present invention, a process chamber 111 is disposed in the center of the left side surface of the fixed end 11 to reduce the weight of the supporting mandrel 10; the center of the right side surface of the supporting end 12 is provided with a center hole 121, so that the center tailstock of the machine tool can be supported conveniently, and the fixed tool is well suitable for machining of the machine tool.

It should be noted that the terms "first, second and third" in the present invention are used for descriptive purposes only, do not denote any order, are not to be construed as indicating or implying any relative importance, and are to be interpreted as names.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. The utility model provides a frock is fixed to finish machining excircle for fixed tube-shape thin wall work piece, its characterized in that, wherein fixed frock includes:

2. The finish machining excircle fixing tool according to claim 1, wherein the first transition portion and the second transition portion are both of a chamfered structure.

3. The finish machining excircle fixing tool according to claim 1, wherein said first transition portion and said second transition portion are curved surface type structures.

4. The finish machining excircle fixing tool according to claim 1, wherein the first transition portion is of a chamfer type structure, and the second transition portion is of a curved surface type structure; or the first transition part is of a curved surface type structure, and the second transition part is of a chamfer angle type structure.

5. The finish machining excircle fixing tool according to claim 1, wherein a plurality of process holes are circumferentially arranged on the supporting top plate.

6. The finish machining excircle fixing tool according to any one of claims 1 to 5, characterized in that the fixing tool further comprises a compression nut, the compression nut is matched with the supporting top plate and is arranged on an outer ring of the same second step, the compression nut is positioned on one side of the supporting top plate, which is far away from the fixed end, and the second step is correspondingly provided with an external thread.

7. The finish machining excircle fixing tool set forth in claim 6, wherein an outer ring of said second step provided with said external thread is further provided with a relief groove to define a length distance of said external thread.

8. The finish machining excircle fixing tool according to claim 6, wherein there are two second steps, and wherein the inner ring of the supporting top plate is sleeved on the second step far away from the fixed end.

9. The finish machining excircle fixing tool according to claim 6, wherein there are two second steps, and an inner ring of the supporting top plate is sleeved on the second step close to the fixed end.

10. The tooling for fixing the excircle in finish machining according to claim 1, wherein the fixed end is provided with a process cavity at the center of the side thereof away from the supporting end to reduce the weight of the supporting mandrel, and the supporting end is provided with a center hole at the center of the side thereof away from the fixed end to facilitate the support of a center tailstock of a machine tool.