An automatic centering clamping mechanism

Abstract

The invention discloses an automatic centring and clamping mechanism. An outer ring body is arranged on the surface of the outer circumference of an inner ring body in a sleeving manner, and the outer ring body and the inner ring body are in clearance fit. The ball head ends of telescopic shafts in a plurality of telescopic bodies penetrate guide holes in the circumference of the inner ring body and then are mounted in sliding grooves located in the inner circle surface of the outer ring body. A worm gear body is fixed to the end face of the inner ring body. A worm is fixed to the end face of the outer ring body through a bearing pedestal and engaged with the worm gear body, and therefore the outer ring body and the inner ring body generate relative rotation. The number of the guide holes in the surface of the outer circumference of the inner ring body, the number of the sliding grooves in the surface of the inner circumference of the outer ring body and the number of the telescopic shafts are the same. According to the automatic centring and clamping mechanism, in the clamping process, all clamping blocks stretch out and retract back at the same time through telescopic bolts, and the clamping blocks are rounded at the same time in the clamping process; and in the whole implementation process, no machine tool is needed, operation is easy and convenient, efficiency is high, and the high application and popularization value is achieved.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to an automatic centering clamping mechanism used in the manufacture of aerospace solid rocket motor metal shells, pressure vessels and thin-walled cylindrical parts in other fields Background technique [0002] In the manufacture of aerospace rocket engine metal shells and various pressure vessels, they are basically rolled and welded by sheet metal, or processed and welded by spinning formed thin-walled tube sections. Both the spin-formed tube section and the roll-welded thin-walled tube section have large deformations. In the processing of the cylinder section, the assembly welding of the cylinder section and the cylinder section, and the processing of forming the shell, the external clamping mechanism is required to correct the circle of the cylinder section or the inner support to support the circle before processing and welding, and for diameters less than 200mm and sma...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of low work efficiency and high labor intensity in the prior art, the present invention proposes an automatic centering clamping mechanism

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