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High-precision self-centering chuck

A self-centering chuck, high-precision technology, used in turning equipment, tool holder accessories, metal processing equipment, etc., can solve problems such as large centering errors, achieve low cost, eliminate gaps, and prolong service life.

Active Publication Date: 2016-03-16
西峡乐力嘉液压科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the existence of the gap, the position of the large bevel gear in the chuck body is not fixed when clamping, and the centering error is large

Method used

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  • High-precision self-centering chuck
  • High-precision self-centering chuck

Examples

Experimental program
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Embodiment Construction

[0011] Such as figure 1 High precision self-centering chuck shown. It consists of small bevel gear 1, chuck claw 2, chuck body 3, large bevel gear 4, key 5, and threaded disc 6. The large bevel gear 4 is arranged in the chuck body 3, and the small bevel gear 1 cooperates with the large bevel gear 4 to drive the large bevel gear 4 to rotate. The two-half structure can also be a three-half structure or more blocks. Such as figure 2 The three-piece threaded disc shown has a first part 6.1, a second part 6.2 and a third part 6.3, and the three parts are assembled into a hollow threaded disc 6, and the joint 6.5 of the threaded disc is inclined interface. The threaded disk 6 is set in the chuck body 3 and is positioned on the side of the large bevel gear 4. The outer surface of the threaded disk 6 has a plane thread, and the back of each part of the threaded disk is provided with a radial keyway 6.4. The key groove cooperates with the large bevel gear 4 through the key 5 resp...

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PUM

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Abstract

The invention discloses a high-precision self-centering chuck which comprises a chuck body, a small bevel gear, a big bevel gear and a chuck jaw. The big bevel gear is arranged in the chuck body, and the small bevel gear is matched with the big bevel gear. A thread plate is laterally arranged on the inner end face of the big bevel gear, two or more than two portions are spliced to form the annular thread plate, a plane thread is formed on the outer side face of the thread plate, the back of each portion of the thread plate is provided with key grooves which are matched with the large bevel gear through keys respectively, parts forming the thread plate can slightly move along the key grooves respectively, and a thread on the chuck jaw is matched with the plane thread. No gap exists for matching during clamping, and precision of the chuck is remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing equipment, and in particular relates to a high-precision self-centering chuck for machine tools. Background technique [0002] At present, the self-centering chuck for clamping the workpiece in the machine tool is composed of a chuck body, a small bevel gear, a large bevel gear, and chuck claws. Insert a key into the key hole of the small bevel gear, turn the small bevel gear, the small bevel gear drives the large bevel gear to rotate, and a plane thread is processed on the back of the large bevel gear, and the plane thread drives the chuck claw along the radial groove on the chuck body Make radial movement to achieve the purpose of clamping the workpiece. Since the large bevel gear needs to rotate in the chuck body, there must be a radial clearance between the large bevel gear and the chuck body. And this gap will become larger and larger as the usage time increases. Therefore, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B31/169
Inventor 左进保左道明庄振京
Owner 西峡乐力嘉液压科技有限公司