Special clamp capable of quickly disassembling internal thread workpiece

Abstract

The utility model relates to a special clamp capable of quickly disassembling an internal thread workpiece, and belongs to the technical field of numerical control lathe appearance curved surface machining. The clamping device comprises a clamping shaft (1) and a positioning nut (2), the clamping shaft (1) is a stepped reducing cylinder and is provided with three sections of cylinders from left to right, an external thread is arranged on the outer side wall of the rightmost cylinder, an external thread is arranged on the outer side wall of the middle cylinder, the outer part of the middle cylinder is connected with the positioning nut (2) through the external thread, and the outer part of the left cylinder is a smooth surface; the workpiece is prevented from being scratched due to disassembly, waste products are reduced, and the product quality is improved; clamping and dismounting are convenient, and the machining efficiency is improved. Tools of different specifications can be manufactured according to the actual product size, and certain universality is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the numerical control lathe appearance curved surface processing technical field, specifically related to a special fixture of quick detachable internal thread work piece. BACKGROUND

[0002] Internal thread and appearance curved surface work piece often meet in daily production, when such work piece appearance curved surface is processed, internal thread clamping is needed, but after appearance processing, work piece thread end face and mould thread end face are closely combined due to friction force, and work piece is difficult to detach. In order to improve product quality, the mould is designed to realize quick thread detachment. INVENTION CONTENTS

[0003] (I) technical problem to be solved

[0004] The utility model to be solved technical problem is how to provide a special fixture of quick detachable internal thread work piece, to solve the problem of difficult clamping and detachment when internal thread work piece is turned curved surface appearance.

[0005] (II) technical scheme

[0006] In order to solve the above technical problem, the utility model provides a special fixture of quick detachable internal thread work piece, which comprises: clamping shaft 1, positioning nut 2;

[0007] The clamping shaft 1 is arranged as a stepped variable-diameter cylinder, and is provided with three sections of cylinders from left to right, is provided with external threads on the outer sidewall of the rightmost cylinder, is provided with external threads on the outer sidewall of the middle cylinder, and the external threads of the middle cylinder are connected with the positioning nut 2, and the outer part of the left cylinder is arranged as a smooth surface;

[0008] The positioning nut 2 is arranged as a circular ring structure, and the inner wall of the circular ring is provided with an internal thread structure, which is screwed into the left smooth surface of the clamping shaft 1;

[0009] The left end outer diameter of the clamping shaft 1 is clamped by the chuck of external equipment, and the left end surface of the positioning nut 2 is positioned, and the work piece is screwed into the clamping shaft 1 through the right end of the clamping shaft 1, and the right end surface of the positioning nut 2 is positioned.

[0010] Among them, when the machining is completed, the clamping shaft 1 is detached from the equipment main shaft, and the right end surface of the positioning nut 2 is separated from the surface of the work piece by using a wrench.

[0011] (III) beneficial effects

[0012] The utility model provides a special fixture of quick detachable internal thread work piece, simple structure, low manufacturing cost, easy operation, high dismounting efficiency, avoids the scratch of work piece due to the dismounting of work piece, reduces the waste product, improves product quality, convenient clamping and dismounting, improves processing efficiency, can make different specifications of tooling according to actual product size, has certain commonality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, content and advantage of the utility model more clear, below, combining with the drawings and examples, the specific embodiment of the utility model is further described in detail.

[0015] The utility model provides a special fixture of quick detachable internal thread work piece, including: clamping shaft 1, locating nut 2,

[0016] The clamping shaft 1 is arranged as a stepped variable-diameter cylinder, is provided with three sections of cylinders from left to right, is provided with external thread on the outer sidewall of the rightmost cylinder, is provided with external thread on the outer sidewall of the cylinder in the middle, and the cylinder in the middle is connected with the locating nut 2 through the external thread, and the cylinder on the left side is arranged as a smooth surface on the outside,

[0017] The locating nut 2 is arranged as a circular ring structure, is provided with internal thread structure on the inner wall of the circular ring, and is screwed into the left smooth surface of the clamping shaft 1,

[0018] The outer diameter of the left end of the clamping shaft 1 is clamped by the chuck of external equipment, the left end surface of the locating nut 2 is positioned, the work piece is screwed into the clamping shaft 1 through the right end of the clamping shaft 1, and the right end surface of the locating nut 2 is positioned.

[0019] When the machining is completed, the clamping shaft 1 is removed from the equipment main shaft, and the right end surface of the locating nut 2 is separated from the surface of the work piece by using a wrench.

[0020] The principle of the utility model is:

[0021] The locating nut 2 is screwed with the clamping shaft 1, the left end outer diameter of the clamping shaft 1 is clamped by the chuck of equipment, the left end surface of the nut 2 is positioned, the work piece is screwed into the clamping shaft 1, and the right end surface of the locating nut 2 is positioned. After machining, the clamping shaft is removed from the equipment main shaft, the right end surface of the locating nut is separated from the surface of the work piece by using a wrench, and the work piece can be easily screwed down without friction.

[0022] The working process of the utility model is:

[0023] The locating nut 2 is screwed with the clamping shaft 1,

[0024] The left end of the clamping shaft 1 is clamped by the clamping jaw of the device, the end face of the clamping jaw is in contact with the left end face of the positioning nut, and positioning and clamping are realized;

[0025] The workpiece is screwed into the clamping shaft, the end face of the workpiece is in contact with the right end face of the positioning nut, and positioning and clamping of the workpiece are realized;

[0026] The main shaft rotates forward, under the action of the screwing force, the workpiece and the positioning nut 2 will have a movement trend perpendicular to the direction of the main shaft, but since the positioning nut has been in contact with the surface of the chuck, the workpiece will not continue to move perpendicular to the direction of the main shaft;

[0027] When disassembling, the clamping shaft 1 is taken out of the clamping jaw of the device, the positioning nut 2 is easily separated from the surface of the workpiece by using a wrench, the friction force between the workpiece and the positioning nut 2 disappears, and the workpiece can be easily unscrewed.

[0028] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and deformations can be made without departing from the technical principles of the present application, and these improvements and deformations should also be regarded as the protection scope of the present application.

Claims

1. A fixture for quickly dismounting an internally threaded workpiece, characterized in that, Include: Clamping shaft (1), positioning nut (2); The clamping shaft (1) is arranged as a stepped variable-diameter cylinder, which is provided with three sections of cylinders from left to right, an outer thread is arranged on the outer side wall of the rightmost cylinder, an outer thread is arranged on the outer side wall of the middle cylinder, the outer part of the middle cylinder is connected with the positioning nut (2) through the outer thread, and the outer part of the cylinder arranged on the left side is arranged as a smooth surface; The positioning nut (2) is arranged as a circular ring structure, an inner thread structure is arranged on the inner wall of the circular ring, and the left smooth surface of the clamping shaft (1) is screwed in; The outer diameter of the left end of the clamping shaft (1) is clamped by an external equipment chuck, the left end surface of the positioning nut (2) is positioned, and the workpiece is screwed into the clamping shaft (1) through the right end of the clamping shaft (1), so that the right end surface of the positioning nut (2) is positioned.

2. The special fixture for quick detachable internal threaded workpiece as claimed in claim 1 wherein, When the machining is completed, the clamping shaft (1) is removed from the equipment main shaft, and the right end surface of the positioning nut (2) is separated from the surface of the workpiece by using a wrench.

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