Disassembly type internal expansion chuck

Abstract

The utility model relates to a decomposition type internal expansion chuck which comprises a chuck connecting body and a chuck positioning body, and further comprises a chuck internal expansion body and an internal expansion connecting screw rod, the chuck connecting body is a hollow cylindrical body, the tail end of the chuck connecting body is used for being connected with a machine tool spindle, the head end of the chuck connecting body is sleeved with the tail end of the chuck positioning body, and the inner wall of the head end is provided with internal threads; the chuck positioning body is of a hollow body structure, internal threads are arranged on the inner wall of the head end of the chuck positioning body, and the head end extends forwards to form a diameter expanding part. The chuck internal expansion body is of a hollow structure, the tail end of the chuck internal expansion body is in threaded connection with the head end of the chuck positioning body, a plurality of expansion through grooves are formed in the circumferential face, away from the tail end, of the chuck internal expansion body in the axial direction, and the expansion through grooves extend to the head end of the chuck internal expansion body. The device is simple in structure and convenient to install by workers, the machine adjusting efficiency during product replacement and the production efficiency of operation of the operators are greatly improved, and the concentricity of the products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hardware bathroom technical field, specifically is a kind of decomposed internal expansion chuck. BACKGROUND

[0002] With the development of bathroom products, various products are changing rapidly, and the types are more and more difficult to realize batch automation. The existing fixture used for zinc alloy outer contour machine product is too heavy, and it is too cumbersome to install on the numerical control lathe, which greatly increases the machine adjustment process, and the outsourcing fixture is not conducive to the machining of the outer contour product. UTILITY MODEL CONTENTS

[0003] The utility model solves the technical problem to provide a kind of decomposed internal expansion chuck, the decomposed internal expansion chuck avoids machine adjustment trouble, can improve production efficiency.

[0004] The technical solution of the utility model is to provide a kind of decomposed internal expansion chuck, including chuck connector and chuck positioning body, further including chuck internal expansion body and internal expansion connecting screw rod, wherein,

[0005] Chuck connector is a hollow cylindrical body, its tail end is used to connect with machine tool spindle, its head end outer sleeve chuck positioning body tail end, and the first end inner wall has internal thread;

[0006] Chuck positioning body is hollow main body structure, and the first end inner wall is provided with internal thread, and the first end is further extended with the diameter expansion part forward;

[0007] Chuck internal expansion body is hollow structure, and its tail end is threadedly connected with the first end of chuck positioning body, and the circumferential surface of chuck internal expansion body away from the tail end is provided with a plurality of expansion through slots along the axial direction, which extends to the first end of chuck internal expansion body;

[0008] The tail end of internal expansion connecting screw rod is sequentially penetrated through chuck internal expansion body, chuck positioning body and is threadedly connected with the first end inner wall of chuck connector, and the first end of internal expansion connecting screw rod is gradually expanded in diameter and is conical.

[0009] As preferred, the tail end outer diameter of chuck connector is matched with the inner hole of machine tool spindle.

[0010] As preferred, the first end of chuck connector is in diameter reducing structure and its outer diameter is matched with the tail end inner diameter of chuck positioning body.

[0011] As preferred, the outer diameter of chuck positioning body is consistent with the tail end outer diameter of chuck connector.

[0012] As preferred, the outer diameter of internal expansion connecting screw rod is less than the inner diameter of chuck internal expansion body.

[0013] As preferred, the maximum outer diameter of the first end of internal expansion connecting screw rod is greater than the inner diameter of chuck internal expansion body.

[0014] Preferably, the opening profile of the first end of the chuck's inner expansion body is adapted to the outer profile of the first end of the inner expansion connecting screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model has a simple structure and is easy for workers to install. It greatly improves the efficiency of machine adjustment when changing products and the production efficiency of operators, improves product concentricity, and reduces fixture development costs. Attached image description:

[0017] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0018] Fig. 2 This is a schematic diagram of the structure of the inner expansion body of the chuck in an embodiment of this utility model.

[0019] In the diagram: 1. Chuck connector; 2. Chuck positioning body; 3. Chuck inner expansion body; 4. Inner expansion connecting screw. Detailed implementation method:

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figs. 1-2 As shown, a disassembled internal expansion chuck, from back to front, includes a chuck connector 1, a chuck positioning body 2, an internal expansion chuck body 3, and an internal expansion connecting screw 4, wherein...

[0022] The collet connector 1 is a hollow cylindrical body. Its tail end is used to connect with the machine tool spindle, and its head end is externally sleeved with the tail end of the collet positioning body 2. The inner wall of the head end has internal threads. In this embodiment, the outer diameter of the tail end of the collet connector 1 is the same as the inner diameter of the machine tool spindle, and the head end is an M16 threaded hole.

[0023] The chuck positioning body 2 has a hollow main structure, with internal threads on the inner wall of its first end, and an enlarged diameter section extending forward from the first end; in this embodiment, the first end is an M24 threaded hole.

[0024] The inner expansion body 3 of the chuck has a hollow structure. Its tail end has an M24 external thread and is threaded to the head end of the chuck positioning body 2. The circumferential surface of the inner expansion body 3 away from the tail end is provided with several expansion grooves along the axial direction. The expansion grooves extend to the head end of the inner expansion body 3. In this embodiment, there are 3 expansion grooves. The length of the expansion grooves is the inner expansion part.

[0025] The internal expansion connecting screw 4 has an M16 external thread. Its tail end passes through the inner expansion body 3 of the collet and the collet positioning body 2 in sequence and is threaded to the inner wall of the first end of the collet connecting body 1. The first end of the internal expansion connecting screw 4 gradually expands forward into a conical shape. The conical surface of this conical shape plays the role of expanding and tightening the inner expansion body of the collet. In order to better fit, in this embodiment, the opening contour of the first end of the inner expansion body 3 of the collet is adapted to the outer contour of the first end of the internal expansion connecting screw 4, which is also a conical surface.

[0026] In this embodiment, the first end of the chuck connector 1 has a reduced diameter structure, and its outer diameter is adapted to the inner diameter of the tail end of the chuck positioning body 2. The outer diameter of the chuck positioning body 2 is consistent with the outer diameter of the tail end of the chuck connector 1.

[0027] In one implementation, the outer diameter of the internal expansion connecting screw is smaller than the inner diameter of the internal expansion body of the chuck. The maximum outer diameter of the beginning end of the internal expansion connecting screw is larger than the inner diameter of the internal expansion body of the chuck.

[0028] In use, the hydraulic or pneumatic system of the lathe pulls the chuck connector 1, which drives the internal expansion connecting screw 4 to expand the internal expansion body 3 of the chuck, thereby fixing the product.

[0029] This utility model has a simple structure and is easy for workers to install. It greatly improves the efficiency of machine adjustment when changing products and the production efficiency of operators, improves product concentricity, and reduces fixture development costs.

[0030] The above description only illustrates preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. Any equivalent structural or procedural modifications made using this specification are included within the patent protection scope of this invention.

Claims

1. A split inner collet comprising a collet connector and a collet locator, wherein, The chuck inner expansion body and the inner expansion connecting screw are also included, wherein, The chuck connecting body is a hollow cylindrical body, the tail end of which is used for connecting with the machine tool spindle, and the head end of which is externally sleeved with the tail end of the chuck positioning body, and the inner wall of the head end is provided with internal threads; The chuck positioning body is a hollow body structure, the inner wall of the head end of which is provided with internal threads, and the head end further extends forwardly with a diameter expansion part; The chuck inner expansion body is a hollow structure, the tail end of which is threadedly connected with the head end of the chuck positioning body, and the circumferential surface of the chuck inner expansion body away from the tail end is provided with a plurality of expansion through-slots extending to the head end of the chuck inner expansion body in the axial direction; The tail end of the inner expansion connecting screw is sequentially penetrated through the chuck inner expansion body, the chuck positioning body and is threadedly connected with the inner wall of the head end of the chuck connecting body, and the head end of the inner expansion connecting screw gradually expands in diameter in a conical shape forwardly.

2. The disassembly inner expansion chuck according to claim 1, wherein, The outer diameter of the tail end of the chuck connecting body is adapted to the inner hole of the machine tool spindle.

3. The disassembly inner expanding chuck according to claim 2, wherein, The head end of the chuck connecting body is in a diameter-reduced structure and the outer diameter thereof is adapted to the inner diameter of the tail end of the chuck positioning body.

4. The split inner expansion collet of claim 3, wherein, The outer diameter of the chuck positioning body is consistent with the outer diameter of the tail end of the chuck connecting body.

5. The disassembly inner expansion chuck according to claim 1, wherein, The outer diameter of the inner expansion connecting screw is smaller than the inner diameter of the chuck inner expansion body.

6. The disassembly inner expansion chuck according to claim 1, wherein, The maximum outer diameter of the head end of the inner expansion connecting screw is larger than the inner diameter of the chuck inner expansion body.

7. The disassembly inner expansion chuck according to claim 1, wherein, The opening profile of the head end of the chuck inner expansion body is adapted to the outer profile of the head end of the inner expansion connecting screw.

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