CN210789291U

CN210789291U - Internal expansion chuck for machining thin-wall valve sleeve

Info

Publication number: CN210789291U
Application number: CN201921067156.6U
Authority: CN
Inventors: 殷栋
Original assignee: Wuxi Maytag Precision Machinery Co ltd
Current assignee: Wuxi Maytag Precision Machinery Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-06-19
Anticipated expiration: 2029-07-09

Abstract

The utility model provides an inner expansion chuck for processing a thin-wall valve sleeve, wherein an inner expansion frustum is arranged at the right part of the inner expansion chuck, the shape of the inner expansion frustum is a cone with the outer diameter gradually enlarged from left to right, a clamping opening is arranged on the right end surface of the inner expansion frustum, the axis of the clamping opening is superposed with the axis of the internal expanding chuck, a valve sleeve to be turned is placed in the clamping opening, a plurality of shrinkage joints distributed along the axial direction are arranged on the conical wall of the internal expansion frustum, external threads are arranged on the outer wall of the left part of the internal expansion chuck, the internal expansion chuck is arranged on a lathe by the external threads, through setting up the internal expanding frustum, guaranteed the clamping rigidity of valve barrel, avoided the valve barrel because the work piece that excessive clamping caused warp even the work piece is scrapped, make simultaneously add man-hour more stable, improved the machining precision, guaranteed the quality of product.

Description

Internal expansion chuck for machining thin-wall valve sleeve

Technical Field

The utility model relates to a hydraulic component makes the field, especially relates to an internal expanding chuck for processing of thin wall valve barrel.

Background

With the development of society, the lathe is widely applied to the metal processing industry because of high processing flexibility, high precision and strong adaptability.

In the processing process of valve sleeve parts, when the wall thickness of a valve sleeve is thinner, the traditional three-jaw chuck can cause deformation and crushing of the valve sleeve, and even cause the processing and scrapping of the valve sleeve.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that when the thin wall valve barrel, traditional three-jaw chuck can cause the deformation of work piece to crush, the utility model provides an internal expanding chuck for thin wall valve barrel processing solves above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: the inner expansion chuck is used for machining a thin-wall valve sleeve, an inner expansion frustum is arranged at the right part of the inner expansion chuck, the inner expansion frustum is in a conical shape with the outer diameter gradually enlarged from left to right, a clamping opening is formed in the right end face of the inner expansion frustum, the axis of the clamping opening coincides with the axis of the inner expansion chuck, a valve sleeve to be turned is placed in the clamping opening, a plurality of shrinkage joints distributed along the axial direction are formed in the conical wall of the inner expansion frustum, an external thread is arranged on the outer wall of the left part of the inner expansion chuck, and the internal expansion chuck is installed on a lathe through the external thread.

Further: the left end of clamping mouth turns left from the right side and has set gradually the spring mounting hole and the nut mounting hole of intercommunication, the axle center of spring mounting hole with the axle center coincidence of clamping mouth, the external diameter size of spring mounting hole is less than the external diameter size of valve barrel, install the spring in the spring mounting hole, wear to be equipped with the connecting rod in the middle of the spring, the fixed pushing block that is provided with of right-hand member of connecting rod, the external diameter size that pushes away the block is greater than the internal diameter machining dimension of valve barrel can outwards push away the valve barrel, the left end of connecting rod passes in proper order the spring mounting hole with the nut mounting hole, the left part of connecting rod is provided with locking thread, the last nut of installing of locking thread.

Further: and the right end of the nut mounting hole is provided with a clamping table protruding inwards.

Further: and a lubricating oil groove is formed in the outer wall of the inner expansion chuck.

The beneficial effects of the utility model are that, the utility model discloses an internal expanding chuck for thin wall valve barrel processing has guaranteed the clamping rigidity of valve barrel through setting up the internal expanding frustum, has avoided the valve barrel to deform even the work piece scrap because of the work piece that excessive clamping caused, makes simultaneously add man-hour more stable, has improved the machining precision, has guaranteed the quality of product.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of an internal expansion chuck for processing a thin-wall valve sleeve according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a schematic view of the valve sleeve mounted on the internal expansion collet.

In the figure, 1, an inner expansion frustum, 2, a clamping opening, 3, a valve sleeve, 4, a contraction joint, 5, an external thread, 6, a spring mounting hole, 7, a nut mounting hole, 8, a spring, 9, a connecting rod, 10, a pushing block, 11, a nut, 12, a clamping platform, 13 and a lubricating oil groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides an internal expanding chuck for thin wall valve barrel processing, the right part of internal expanding chuck is provided with internal expanding frustum 1, the shape of internal expanding frustum 1 is for turning the toper of right external diameter and expanding gradually by a left side, be provided with clamping mouth 2 on the right-hand member face of internal expanding frustum 1, the axle center of clamping mouth 2 with the axle center coincidence of internal expanding chuck, place the valve barrel 3 of treating the turning in the clamping mouth 2, be provided with a plurality of ways along the shrinkage joint 4 of axial distribution on the conical wall of internal expanding frustum 1, be provided with external screw thread 5 on the left part outer wall of internal expanding chuck, external screw thread 5 will the internal expanding chuck is installed on the lathe.

During operation, the internal expansion chuck is installed on a lathe through the external thread 5, the valve sleeve 3 to be turned is placed in the clamping opening 2, the internal expansion frustum 1 clamps a workpiece to perform inner hole turning, the clamping rigidity of the valve sleeve 3 can be improved in the clamping mode, the workpiece scrapping of the valve sleeve 3 caused by clamping is avoided, meanwhile, the valve sleeve 3 is more stable during machining, machining precision is improved, and product quality is guaranteed.

The left end of clamping mouth 2, turn left from the right side and set gradually the spring mounting hole 6 and the nut mounting hole 7 of intercommunication, the axle center of spring mounting hole 6 with the axle center coincidence of clamping mouth 2, the external diameter of spring mounting hole 6 is less than the external diameter of valve barrel 3, install spring 8 in the spring mounting hole 6, wear to be equipped with connecting rod 9 in the middle of the spring 8, the fixed piece 10 that promotes that is provided with of right-hand member of connecting rod 9, the external diameter that promotes piece 10 is greater than the internal diameter machining size of valve barrel 3 can outside top the valve barrel 3, the left end of connecting rod 9 passes in proper order spring mounting hole 6 with nut mounting hole 7, the left part of connecting rod 9 is provided with locking screw, the last nut 11 that installs of locking screw.

According to the internal expansion chuck for machining the thin-wall valve sleeve, the clamping table 12 protruding inwards is arranged at the right end of the nut mounting hole 7, after turning is completed, the workpiece is loosened by the internal expansion frustum 1, and the processed workpiece is pushed outwards by the pushing block 10 under the action of the spring 8, so that the blanking automation is realized, the workload of workers is reduced, and the working efficiency is improved; under the action of the spring 8, the connecting rod 9 is ejected rightwards, and the clamping table 12 limits the moving range of the connecting rod 9 and the pushing block 10 by clamping the nut so as to process a next product.

And a lubricating oil groove 13 is formed in the outer wall of the inner expansion chuck, the lubricating oil groove 13 can store lubricating oil and provide lubrication for the inner expansion chuck during working, the abrasion of the inner expansion chuck is reduced, and the service life is prolonged.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an internal expanding chuck for thin wall valve barrel processing which characterized in that: the right part of the internal expansion chuck is provided with an internal expansion frustum (1), the shape of the internal expansion frustum (1) is a cone with the outer diameter gradually enlarged from left to right, a clamping opening (2) is formed in the right end face of the internal expansion frustum (1), the axis of the clamping opening (2) is superposed with the axis of the internal expansion chuck, a valve sleeve (3) to be turned is placed in the clamping opening (2), a plurality of shrinkage joints (4) distributed along the axial direction are arranged on the conical wall of the internal expansion frustum (1), external threads (5) are formed in the outer wall of the left part of the internal expansion chuck, and the internal expansion chuck is installed on a lathe through the external threads (5).

2. The internal expansion collet for machining a thin-walled valve sleeve as defined in claim 1, wherein: the left end of the clamping opening (2) is provided with a spring mounting hole (6) and a nut mounting hole (7) which are communicated with each other in sequence from the right side, the axis of the spring mounting hole (6) coincides with the axis of the clamping opening (2), the outer diameter of the spring mounting hole (6) is smaller than that of the valve sleeve (3), a spring (8) is arranged in the spring mounting hole (6), a connecting rod (9) penetrates through the middle of the spring (8), the right end of the connecting rod (9) is fixedly provided with a pushing block (10), the outer diameter of the pushing block (10) is larger than the inner diameter machining size of the valve sleeve (3) and can push the valve sleeve (3) outwards, the left end of the connecting rod (9) sequentially penetrates through the spring mounting hole (6) and the nut mounting hole (7), and the left part of the connecting rod (9) is provided with a locking thread, and a nut (11) is arranged on the locking thread.

3. The internal expansion collet for machining a thin-walled valve sleeve as defined in claim 2, wherein: the right end of the nut mounting hole (7) is provided with a clamping table (12) protruding inwards.

4. The internal expansion collet for machining a thin-walled valve sleeve as defined in claim 1, wherein: and a lubricating oil groove (13) is formed in the outer wall of the inner expansion chuck.