A chucking tool for a lathe

Abstract

A kind of chucking tool of replaceable chuck on lathe solves the machining problem of small diameter parts, belongs to the field of mechanical process equipment.A kind of chucking tool of replaceable chuck on lathe, including chuck, chucking tool and screw.The structure of chucking tool at the place of clamping workpiece can be changed according to the diameter and structure of actual production parts;Chuck and chucking tool are connected by countersunk head thread, to ensure strength;Chuck is heat treated to improve its wear resistance;Arc positioning is used between chuck and chucking tool, clearance fit is used to ensure reliable positioning, chuck and chucking tool are connected and then clamped to chuck;The thickness of chuck is two-thirds of the thickness of chucking tool, to prevent chuck from moving under stress during machining.The design of the utility model is suitable for machining of parts with different diameters and different structures, and has simple structure, convenient operation, improved production efficiency and reduced time.

Description

Technical Field

[0001] This utility model relates to a chuck tooling with replaceable chucks on a lathe, belonging to the field of mechanical process equipment. Background Technology

[0002] The three-jaw chuck is an important structure on a lathe for clamping workpieces. The three-jaw chuck that comes with a regular lathe can clamp bar stock with a minimum diameter of 18mm. Parts smaller than this diameter cannot be machined directly and require tooling for clamping.

[0003] In existing technologies, conventional processing methods mainly have the following problems:

[0004] First, the three-jaw chuck that comes with a regular lathe cannot clamp small-diameter parts;

[0005] Secondly, in traditional three-jaw chuck fixtures, the jaws and chuck are designed as one unit, making them non-interchangeable.

[0006] In summary, the cost of producing qualified products using existing technologies is relatively high. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and solve the problem of processing parts with small diameters.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A chuck fixture with a replaceable chuck on a lathe includes a chuck, jaws, and screws. The structure of the chuck clamping the workpiece can be modified according to the diameter and structure of the actual part to be produced; the chuck and jaws are connected by countersunk threads to ensure strength; the chuck undergoes heat treatment to improve its wear resistance; the chuck and jaws are positioned using an arc and clearance fit to ensure reliable positioning; after the chuck and jaws are connected, they are mounted on the chuck; the thickness of the chuck is two-thirds the thickness of the jaws to prevent the chuck from moving under force during machining.

[0010] In the aforementioned chuck fixture with a replaceable chuck on a lathe, the chuck is made of a circle with a diameter of 50mm, which is evenly cut into three parts.

[0011] The jaws are 90mm long and 35mm thick, with an M6 threaded hole located 82.8mm from the tail.

[0012] The chuck is 20mm thick and has a 6.5mm diameter round hole. The countersunk hole is 10.5mm in diameter and 10mm deep. The distance between the center of the countersunk hole and the center of the chuck is 15mm.

[0013] A chuck tooling with replaceable chucks on a lathe, wherein the chuck is made of 30CrMnSiA material and is heat-treated, and the jaws are made of 20 steel.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] (1) This utility model can be used to process shaft parts with small diameter and complex structure.

[0016] (2) The chuck structure can be changed according to the structure and size of the parts being processed.

[0017] (3) The claws in this utility model can be reused, saving costs.

[0018] (4) The chuck of this utility model is heat-treated to improve its wear resistance.

[0019] (5) The design of this utility model is applicable to the processing of parts with different diameters and structures. It has a simple structure, is easy to operate, improves production efficiency, and reduces time costs.

[0020] (6) The overall structure of this utility model is simple and reliable, easy to disassemble and transport, and has high applicability and strong operability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Reference numerals: 1-clamp; 2-jaw; 3-screw. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] A chuck fixture with a replaceable chuck on a lathe, used for machining shaft parts with a diameter less than 18mm, includes a chuck 1, jaws 2, and screws 3, such as... Figure 1 As shown.

[0025] The chuck 1 is used to clamp the arc at the part and can be replaced according to the size and structure of the part being processed. The chuck 1 is made of 30CrMnSiA material and is heat-treated to improve the strength of the material and make it less prone to wear.

[0026] The external dimensions of the chuck 2 are the same as those of the chuck that comes with the lathe.

[0027] The chuck 2 can be a standard chuck purchased from outside and then processed.

[0028] The chuck 1 and the jaw 2 are connected by screws 3 to ensure the interchangeability of the chuck 1.

[0029] The screw 3 is a countersunk screw to prevent the screw head from protruding from the collet and interfering with the machining of the part.

[0030] The chuck 1 and the jaw 2 are positioned by an arc with a diameter of 50 mm and have a clearance fit; after the chuck 1 and the jaw 2 are connected, they are mounted on the chuck.

[0031] The thickness of the chuck 1 is greater than or equal to two-thirds of the thickness of the jaw 2 to prevent inaccurate positioning of the chuck and movement under force during processing.

[0032] The working principle of this utility model is as follows:

[0033] A specific chuck 1 is made according to the structure of the part to be processed. The chuck 1 and the jaws 2 are positioned by the arc surface. The chuck 1 and the jaws 2 are connected by screws 3. The assembled structure is assembled on the three-jaw chuck. Finally, the three-jaw chuck is mounted on the lathe to process shaft parts.

[0034] The contents not described in detail in this utility model specification are common knowledge to those skilled in the art.

[0035] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A chuck fixture with replaceable chucks for a lathe, characterized in that, This chuck fixture is used to process shaft parts with a diameter of less than 18mm, and includes a chuck (1), chucks (2), and screws (3); The chuck (1) and the jaws (2) are positioned by an arc and have a clearance fit; The chuck (1) and the jaws (2) are connected by screws (3); The cross-section of the chuck (1) is fan-shaped; The thickness of the chuck (1) is greater than or equal to two-thirds of the thickness of the jaw (2).

2. The chuck tooling according to claim 1, characterized in that, The chuck (1) undergoes heat treatment during the preparation process.

3. The chuck tooling according to claim 1, characterized in that, The collet (1) has a countersunk hole, and the screw (3) connects the collet (1) and the jaw (2) through the countersunk hole.

4. The chuck tooling according to claim 1, characterized in that, The material of the chuck (1) is 30CrMnSiA.

5. The chuck tooling according to claim 1, characterized in that, The material of the chuck (2) is 20 steel.

6. The chuck tooling according to claim 1, characterized in that, The external dimensions of the chuck (2) are the same as those of the chuck that comes with the lathe.

7. The chuck tooling according to claim 1, characterized in that, Screw (3) is a countersunk screw.

8. The chuck tooling according to claim 1, characterized in that, The chuck (1) can be replaced according to the size and structure of the part being processed.

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