Offset driving heavy-load pneumatic four-jaw chuck

Abstract

The invention relates to an offset driving heavy-load pneumatic four-jaw chuck. The four-jaw chuck comprises clamping jaws, a guide rail mechanism, a centering disc, a driving mechanism, an air inlet ring and a gear. The clamping jaws are connected to the guide rail connecting base, the guide rail connecting base is connected with a sliding base of the linear guide rail, and the linear guide rail is fixed to the guide rail fixing plate. One end of the pneumatic driving module is connected with the guide rail fixing plate, the other end of the pneumatic driving module is connected with the two centering discs respectively, the centering discs are connected to one end of the rotating main shaft respectively, one end of the driving wheel is connected to the guide rail connecting seat, and the other end of the driving wheel can move in the centering discs; the gear is connected to one end of the rotating main shaft, and the rotating main shaft is connected with the guide rail fixing plate. The pneumatic clamping cost is low, the stroke of the clamping jaws is large, the rolling transmission mode is free of the blocking phenomenon, and the pneumatic clamping device has the large application prospect on the heavy-load large-pipe-diameter laser pipe cutting machine with the high clamping force requirement and the large stroke range requirement.

Description

technical field [0001] The invention relates to the technical field of a clamping device, in particular to a bias-driven heavy-duty pneumatic four-jaw chuck. Background technique [0002] Machine tools are generally divided into three-jaw chucks and four-jaw chucks by chucks. The chucks clamp the workpiece from multiple directions at the same time, and rotate to cut the outer circle of the workpiece. Most of the existing four-jaw chucks have clamps when clamping. If the clamping force is too large or too small, the workpiece will be deformed if the clamping force is too large, if the clamping force is too small, the workpiece will loosen. Caton problem occurs. Contents of the invention [0003] The object of the present invention is to provide a bias-driven heavy-duty pneumatic four-jaw chuck to solve the problems in the prior art. [0004] The technical solution of the present invention is: a bias-driven heavy-duty pneumatic four-jaw chuck, the four-jaw chuck includes j...

AI Technical Summary

Problems solved by technology

[0002] Machine tools are generally divided into three-jaw chucks and four-jaw chucks by chucks. The chucks clamp the workpiece from multiple directions at the same time, and rotate to cut the outer circle of the workpiece. Most of the existing four-jaw chucks have clamps when clamping The problem of too large or too small clamping force, the workpiece is deformed if the clamping force is too large, the workpiece is loosened if the clamping force is too small, the transmission resistance of the claws is relatively large during the clamping and loosening process, the transmission efficiency is revealed, and the claws are easy to There is a problem with Caton

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