CN219025972U

CN219025972U - Internal expansion clamp

Info

Publication number: CN219025972U
Application number: CN202320049573.8U
Authority: CN
Inventors: 郭坤樑
Original assignee: Dongguan Xiangkang Precision Machinery Co ltd
Current assignee: Dongguan Xiangkang Precision Machinery Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-16
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to an internal expansion clamp in the field of clamps, which comprises a flange and a transition block used for being fixed on a machine tool, wherein the transition block is fixedly arranged on the side surface of the flange, the side surface of the flange is provided with an internal expansion clamp, one end of the internal expansion clamp stretches into the flange, the flange is connected with the internal expansion clamp in a convenient-to-detach manner, the other end of the internal expansion clamp is circumferentially divided into a plurality of uniform connecting blocks, gaps are reserved among the connecting blocks, an ejector cone used for expanding the internal expansion clamp is arranged in the internal expansion clamp, a telescopic connecting piece is arranged on the side of the transition block, one end of the ejector cone sequentially penetrates through the flange and the transition block from the internal expansion clamp and finally penetrates into the telescopic connecting piece, and the telescopic connecting piece is connected with the ejector cone in a convenient-to-detach manner. The inner expansion clamp is divided into a plurality of uniform connecting blocks in the circumferential direction through the other end of the inner expansion clamp, and the inner expansion clamp is convenient to open after the tip cone is stretched, so that work of clamping a workpiece is completed.

Description

Internal expansion clamp

Technical Field

The utility model relates to the field of clamps, in particular to an internal expansion clamp.

Background

In industrial production, it is necessary to fasten a work piece of a tubular body or a work piece of an external profile in die casting, forging and casting, and then cut the inside and outside of the work piece with a tool.

In the traditional processing operation of tubular body structure work piece, because the pipe material external diameter surface is coarser, the circularity is big, carries out rough turning processing with pipe material external diameter branch both ends generally, leaves corresponding surplus and grinds the external diameter on the grinding machine again, guarantees external diameter size and circularity, and the centre gripping external diameter processes the hole again, and this processing procedure is higher to the three-jaw and the operating personnel requirement of secondary clamping, needs to guarantee the degree of identity.

However, the conventional operation has long process time, high technical requirements for operators due to multiple clamping, and easy deformation of the workpiece due to the clamping of the workpiece by three claws, so that the processing process is more complicated compared with the processing of the external special-shaped workpiece such as die casting, forging, casting and the like.

Disclosure of Invention

The utility model aims to solve the defects and provide an internal expanding clamp.

The object of the utility model is achieved by: the utility model provides an internal expanding anchor clamps, includes the flange and is used for being fixed in the transition piece of lathe, and the transition piece is fixed to be set up in the side of flange, the side of flange is equipped with internal expanding chuck, and the one end of internal expanding chuck stretches into the inside of flange, and carries out convenient to detach's connection between flange and the internal expanding chuck, and the other end circumference of internal expanding chuck is cut apart into even a plurality of connecting blocks, leaves the clearance between a plurality of connecting blocks, and the inside of internal expanding chuck is provided with the back taper that is used for propping up the internal expanding chuck, and the side of transition piece is equipped with telescopic connection spare, and the one end of back taper passes flange and transition piece in proper order from the internal expanding chuck and pierces into telescopic connection spare at last, carries out convenient to dismantle's connection between telescopic connection spare and the back taper.

In the above description, as a further scheme, the telescopic connecting piece is connected with the tip cone and the flange and the inner expansion chuck through threads.

In the above description, as a further scheme, the flange and the transition block are connected through pins.

In the above description, as a further scheme, the flange and the transition block are connected through screws.

The beneficial effects of the utility model are as follows: the inner expansion clamp is divided into a plurality of uniform connecting blocks in the circumferential direction through the other end of the inner expansion clamp, the inner expansion clamp is convenient to open after the top cone is stretched, the work of clamping the workpiece is completed, the steps are simple and easy to operate, the clamping of the tubular structural workpiece and the external special-shaped workpiece is convenient, and the concentricity of workpiece clamping is improved.

Drawings

FIG. 1 is a cross-sectional view of an internal expanding clamp in accordance with the present utility model;

FIG. 2 is a schematic perspective view of an inner expansion chuck in the inner expansion chuck according to the present utility model;

FIG. 3 is a cross-sectional view of an inner expansion collet in an inner expansion clamp according to the present utility model;

in the figure: the device comprises a 1-workpiece, a 2-telescopic connecting piece, a 3-transition block, a 4-flange, a 5-internal expansion chuck and a 6-tip cone.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended for purposes of illustrating the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a number", "a plurality" or "a plurality" is two or more, unless explicitly defined otherwise. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be. In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1-3, an internal expansion fixture specifically implemented by the internal expansion fixture comprises a flange 4 and a transition block 3 used for being fixed on a machine tool, wherein the transition block 3 is fixedly arranged on the side surface of the flange 4, an internal expansion chuck 5 is arranged on the side surface of the flange 4, one end of the internal expansion chuck 5 stretches into the flange 4, the flange 4 is connected with the internal expansion chuck 5 in a convenient-to-detach manner, the other end of the internal expansion chuck 5 is circumferentially divided into a plurality of uniform connecting blocks, gaps are reserved among the connecting blocks, a tip cone 6 used for expanding the internal expansion chuck 5 is arranged in the internal expansion chuck 5, a telescopic connecting piece 2 is arranged on the side of the transition block 3, one end of the tip cone 6 sequentially penetrates through the flange 4 and the transition block 3 from the internal expansion chuck 5 and finally penetrates into the telescopic connecting piece 2, and the telescopic connecting piece 2 is connected with the tip cone 6 in a convenient-to-detach manner. The internal expansion clamp can be used for milling grooves, milling planes and the like, and can clamp workpieces with inner holes provided with protrusions.

In this embodiment, the connection block is provided with three or four or six or eight blocks. The connecting blocks are convenient to fix the workpiece 1 from various angles, so that the workpiece 1 is uniformly stressed.

Specifically, the telescopic connecting piece 2 is connected with the tip cone 6 and the flange 4 is connected with the inner expansion chuck 5 through threads. When the internal expansion chuck 5 or the tip cone 6 is damaged, the internal expansion chuck is convenient for a worker to detach and replace in time.

In this embodiment, the flange 4 and the transition block 3 are connected by pins.

In this embodiment, the flange 4 and the transition block 3 are connected by screws.

The application method of the embodiment of the utility model comprises the following steps: one end of the telescopic connecting piece 2 is connected with a telescopic rod of an oil cylinder (air cylinder) of a numerical control lathe, the transition block 3 and the flange 4 are fixed by a machine tool, the flange 4 is fixed with the inner expansion chuck 5, the telescopic connecting piece 2 drives the tip cone 6 to perform stretching movement, the inner expansion chuck 5 is stretched after the tip cone 6 is stretched, and the work of clamping the workpiece 1 is completed.

The foregoing is a further detailed description of the utility model in connection with specific further embodiments, and is not intended to limit the practice of the utility model to such descriptions. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present utility model, and the present utility model is not limited to the above-mentioned embodiments.

Claims

1. The utility model provides an internal expanding fixture, includes the flange and is used for being fixed in the transition piece of lathe, and the transition piece is fixed to be set up in the side of flange, its characterized in that, the side of flange is equipped with the internal expanding chuck, and the one end of internal expanding chuck stretches into the inside of flange, and carries out convenient to detach's connection between flange and the internal expanding chuck, the other end circumference of internal expanding chuck is cut apart into even a plurality of connecting blocks, leave the clearance between a plurality of connecting blocks, the inside of internal expanding chuck is provided with the back taper that is used for propping up the internal expanding chuck, the side of transition piece is equipped with telescopic connection spare, the one end of back taper passes flange and transition piece in proper order from the internal expanding chuck and pierces into telescopic connection spare at last, carry out convenient to detach's connection between telescopic connection spare and the back taper.

2. The internal expanding fixture according to claim 1, wherein the telescopic connecting piece is connected with the top cone and the flange is connected with the internal expanding clamping head through threads.

3. An internal expanding fixture according to claim 1 or 2, wherein the flange and the transition block are connected by pins.

4. An internal expanding fixture according to claim 1 or 2, wherein the flange and the transition block are connected by screws.