Self-centering chuck

Abstract

The invention relates to the technical field of clamps, in particular to a self-centering chuck. The self-centering chuck comprises a chuck bracket, a rotating sleeve, a chuck claw disc, a driving wheel, at least two chuck claws and a chuck claw driving mechanism; the chuck claw driving mechanism comprises a driving bearing, a straight line driving mechanism connected with the outer circle of the driving bearing, first racks connected with the inner circle of the driving bearing and gears engaged with the first racks; each chuck claw is provided with second racks; and the second racks are engaged with the corresponding gears. According to the ingenious application of the self-centering chuck, the inner circle of the driving bearing rotates along with the rotating sleeve, and the straight line driving mechanism is connected with the outer circle of the driving bearing, so that the whole driving bearing is driven to move; and the straight line driving mechanism is fixed and does not rotate along with the rotating sleeve, so shat the problem that a cable or an air pipe or an oil pipe or the like of the straight line driving mechanism is wound or loosened or abraded is effectively avoided, clamping of the chuck claws is reliable, the maintenance cost of the self-centering chuck is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of clamps, in particular to a self-centering chuck. Background technique [0002] At present, for the self-centering chucks on the market, since the chuck needs to rotate, the driving mechanism of the clamping part rotates with the chuck rotating sleeve. If the drive mechanism uses an electric device, it will cause the wire to be coiled, which may cause the wiring to fall off, and there is a risk of electricity consumption; if the drive mechanism uses an air cylinder or oil cylinder, etc., the oil pipe or air pipe will also be wound, resulting in leakage at the joint. Gas or falls off, affecting the sealing performance, unstable air pressure, and unstable holding force; it also increases the wear of the oil pipe or air pipe, the service life is short, and the defects are very obvious. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a self-center...

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Problems solved by technology

[0002] At present, the self-centering chucks on the market, because the chuck needs to rotate, the driving mechanism of the clamping part rotates with the chuck rotating sleeve

If the drive mechanism uses an electric device, it will cause the wire to be coiled, which may cause the wiring to fall off, and there is a risk of electricity consumption; if the drive mechanism uses an air cylinder or oil cylinder, etc., the oil pipe or air pipe will also be wound, resulting in leakage at the joint. Gas or falls off, affecting the sealing performance, unstable air pressure, and unstable holding force; it also increases the wear of the oil pipe or air pipe, the service life is short, and the defect is very obvious

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