A half-shell processing method with multiple spiral grooves distributed on the outer circle

Abstract

The invention discloses a half-shell processing method with a plurality of spiral grooves distributed on the outer circle. The method comprises: rough machining the outer surface and the inner surface of a steel pipe; cutting the roughly machined steel pipe symmetrically along the axis into two pieces; Fix the two pieces, and process assembly butt joint holes on the process chucks at both ends of each of the two pieces; assemble the two pieces into a tubular object through the assembly butt joint holes, and bond them; After a section of the outer surface of the tubular is processed as a reference, the inner surfaces of both ends of the tubular are finished, and technical plugs are installed at both ends of the tubular; the inner surface of the tubular, Turning is performed on the outer surface, and spiral groove milling is performed on the outer surface. Finally, the process chucks at both ends are removed to obtain two half-shells, which solves the problem of deformation of the thin-walled long half-shell and improves the processing accuracy and quality of the product.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a half-shell processing method in which a plurality of spiral grooves are distributed on the outer circle. Background technique [0002] The half-shell is a semi-cylindrical rotary thin-walled structure, and three spiral grooves of different specifications are distributed on the outer circle, and it is formed by machining with 45# steel pipe. The half-shell has a large axial length, small outer diameter and aperture, and thin wall. The entire forming process involves turning, milling, electrical machining, etc., with large deformation and many dimensional deviations. The gap between the two half-shells is large during assembly. After the butt joint, the coaxiality and the relative position of the outer circular spiral groove have large deviations, and the outer circle of the inner hole has a butt joint step, which cannot meet the normal assembly requirements, and se...

AI Technical Summary

Problems solved by technology

[0004] This application provides a half-shell processing method with a plurality of spiral grooves distributed on the outer circle, which solves the phenomenon of stretching and twisting of the thin-walled long half-shell in the prior art after cutting, resulting in a certain tension or compression force after assembly. Technical problems with major hidden dangers

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