Three-jaw chuck achieving mandrel fixing function and convenient disassembly

Abstract

The three-jaw chuck achieving the mandrel fixing function and convenient disassembly comprises a chuck body and protruding blocks, wherein a fluted disc is arranged at the lower end of the chuck body,large bevel gear wheels are evenly distributed at the bottom end of the fluted disc, spiral grooves are formed in the top end of the fluted disc, and clamping jaws are arranged at the top ends of thespiral grooves. Clamping jaw teeth are arranged at the joints between the clamping jaws and the spiral grooves, and a first clamping jaw layer is fixed to the middle of each clamping jaw. A second clamping jaw layer is fixed to the top end of each first clamping jaw layer, and a third clamping jaw layer is fixed to the top end of each second clamping jaw layer. The three-jaw chuck achieving the mandrel fixing function and convenient disassembly is provided with three grooves, when the chuck body is installed, pressing plates can be placed in the grooves to limit the position of the chuck body, and due to the fact that the size of the inner wall of each groove is matched with the size of the corresponding pressing plate, each pressing plate and the corresponding groove can be tightly attached to each other when the pressing plate is placed in the corresponding groove.

Description

technical field [0001] The invention relates to the technical field of a detachable three-jaw chuck with a mandrel fixing function, in particular to a detachable three-jaw chuck with a mandrel fixing function. Background technique [0002] Today, the three-jaw chuck is composed of a chuck body, movable jaws and a jaw driving mechanism by using the radial movement of three movable jaws evenly distributed on the chuck body to clamp and position the workpiece. Under the guide part of the three claws on the three-jaw chuck, there are threads that mesh with the plane threads on the back of the bevel gear. When the small bevel gear is turned with a wrench through the square hole, the bevel gear rotates, and the plane threads on the back simultaneously Drive the three jaws to approach or withdraw from the center to clamp workpieces with different diameters. Replace the three claws with three reverse claws to install workpieces with larger diameters. The self-centering accuracy of...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an easy-to-detach three-jaw chuck with a mandrel fixing function, so as to solve the three-jaw chuck with a mandrel fixing function that is easy to detach in the above-mentioned background technology. The installation and disassembly of the chuck is more troublesome, and the stability after installation is not high, and it is easy to shift, resulting in a decrease in the precision of the workpiece. At the same time, when the workpiece is clamped, the handle needs to be rotated too much, which increases the work intensity.

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