Self centering chuck

Abstract

The invention relates to a self-centering chuck, comprising a chuck body; the chuck body is provided with a claw mechanism used for clamping the workpiece, an adjusting mechanism used for adjusting the state of the claw mechanism, and a self-centering mechanism used for controlling all claws of the claw mechanism to motion with equal distances at the center of the chuck; the top of the chuck bodyis provided with an opening which is convenient for the let-in and take-out of the workpiece; the opening passes through the thickness of the chuck body. After the opening-typed self-centering chuck is arranged on a displacement machine, the workpiece can be vertically hoisted to the center of the chuck and clamped by the self-centering of the chuck; the workpiece is not required to mover axially;therefore, the clamp mounting working procedure is reduced, the clamp mounting time is saved, the auxiliary axial motion device is not required, and the cost of the equipment is reduced.

Description

technical field [0001] The present invention relates to a chuck for mechanical use, especially a self-centering chuck. Background technique [0002] Existing self-centering chucks usually include two types: self-centering three-jaw chucks and self-centering four-jaw chucks. The jaws of these two types of self-centering chucks are all set on a complete disc , and can move equidistantly relative to the center of the chuck. When this kind of self-centering chuck is installed on general displacement machines such as lathes and welding beds, if the cylindrical workpiece wants to be clamped, it must first be hoisted to the side of the chuck by a hoisting machine, and then passed through an axial direction. Movement, so that the workpiece can be clamped only after it is inserted into the chuck. At present, this method is basically adopted at home and abroad. There are two major problems in this method. One is that the workpiece must be hoisted to the side of the chuck first, and ...

AI Technical Summary

Problems solved by technology

There are two major problems in this method. One is that the workpiece must be hoisted to the side of the chuck first, and then the workpiece can be clamped through the process of axial movement. The process increases, and the workpiece is larger. The lower the efficiency; the second is that for some occasions, this kind of self-centering chuck is not competent. Auxiliary axial movement device, or first disassemble the top of the lathe, insert the workpiece into the chuck for clamping, and then reinstall the top and other components, which greatly affects the work efficiency

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