Thin-wall sleeve inner hole finish machining clamp and inner hole machining method

Abstract

The invention relates to a thin-wall sleeve inner hole finish machining clamp and an inner hole machining method. A locating base is composed of a small cylinder A and a big cylinder in an integrated mode. The right end of an inner cavity of the big cylinder is a circular conical surface. The left end of the inner cavity of the big cylinder is a round hole. A transition step surface B is arranged between the round hole formed in the left end and the circular conical surface at the right end. The right end of the big cylinder is provided with external threads. An outer circular conical surface of an elastic lining and the right end of an inner cavity of the locating base 1 are mutually matched at the taper of 1:10. A thin-wall sleeve is arranged in an elastic lining cylindrical surface inner hole. The elastic lining and the left end of the thin-wall sleeve abut against the transition step surface B. A rubber gasket is installed at the right end of the thin-wall sleeve. Inner threads of an end cap are matched with fine pitch external threads at the right end of the locating base. The thin-wall sleeve is pressed tightly through the rubber gasket. A cut being 2mm is formed in the side wall of the elastic lining. When the thin-wall sleeve inner hole finish machining clamp is applied to the machining of a thin-wall inner hole, the rigidity of the thin-wall sleeve is guaranteed when inner hole fine machining is conducted, deformation generated in the process of clamping and machining is avoided, the product percent of pass reaches over 95%, the production cost is reduced, the production efficiency is improved, and economic benefits are increased.

Description

technical field [0001] The invention relates to a mechanical processing tool, in particular to a jig for finishing the inner hole of a thin-wall sleeve and a method for processing the inner hole. Background technique [0002] The thin-walled sleeve is a cylindrical part with an external dimension of φ165x60 and a wall thickness of 6mm. The material is No. 45 steel, and the tolerance of the outer diameter and inner hole is 0.025mm. The tube wall of the part is thin and the rigidity is poor. Clamping and processing Very easy to deform. In the trial production stage, the technological process of rough turning, heat treatment and tempering, and then finishing is adopted; special attention is paid to the finishing process, the lathe with the best precision is selected, and the processing is performed by experienced masters, but the inner and outer circles of the parts are always out of tolerance by 0.02 More than mm, the scrap rate is almost 100%, and the production efficiency i...

AI Technical Summary

Problems solved by technology

[0002] The thin-walled sleeve is a cylindrical part with an external dimension of φ165x60 and a wall thickness of 6mm. The material is No. 45 steel, and the tolerance of the outer diameter and inner hole is 0.025mm. The tube wall of the part is thin and the rigidity is poor. Clamping and processing Easily deformed

In the trial production stage, the technological process of rough turning, heat treatment and tempering, and then finishing is adopted; special attention is paid to the finishing process, the lathe with the best precision is selected, and the processing is performed by experienced masters, but the inner and outer circles of the parts are always out of tolerance by 0.02 More than mm, the scrap rate is almost 100%, and the production efficiency is low, the production cost is high, and there is no market competitiveness

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