Machining method for axial step deep hole system of thin-wall ring

Abstract

The invention relates to a machining method for an axial step deep hole system of a thin-wall ring and belongs to the technical field of axial step deep hole machining of the thin-wall ring. The machining method for the axial step deep hole system of the thin-wall ring is easy to operate, high in machining accuracy and capable of remarkably improving the working efficiency. According to the adopted technical scheme, a thin-wall ring body is horizontally fixed to an operating table and clamped through a clamp on the operating table; a center drill is adopted for drilling a locating center hole of step deep holes in the end face of the thin-wall ring; a hard alloy inner-cooling drill bit is adopted for drilling pre-drilled holes of large holes in the step deep holes in the locating center hole; a guide drill is adopted for drilling guide holes of small holes in the step deep holes in the locating center hole; the hard alloy inner-cooling drill bit is adopted again for drilling pre-drilled holes of the small holes in the step deep holes in the guide holes; and finally, a hard alloy inner-cooling spiral cutting blade step compound-forming reamer is adopted for forming hole walls and steps of the step deep holes through one-time locating cutting, and machining is finished. The method is widely used for machining of the axial step deep holes of the thin-wall ring.

Description

technical field [0001] The invention relates to a method for processing a thin-walled ring axially stepped deep hole system, belonging to the technical field of thin-walled ring axially stepped hole processing. Background technique [0002] Thin ring wall axial step deep hole processing is a general machining technology. At present, the processing steps of the existing thin-walled axially stepped deep hole system are tedious, and there are four main difficulties in the processing of the thin-walled axially stepped deep hole system: 1) The radial (diameter direction) static stiffness of the thin-walled ring body is insufficient , it is easy to cause clamping instability; 2) The axis of the stepped deep hole is easy to deviate, and the parallelism of 0.06mm is difficult to guarantee; 3) The processing steps of the stepped deep hole system are complicated and the processing efficiency is very low (about 6h); 4 ) It is difficult to guarantee the coaxiality φ0.015mm between the ...

AI Technical Summary

Problems solved by technology

At present, the processing steps of the existing thin-walled axially stepped deep hole system are tedious, and there are four main difficulties in the processing of the thin-walled axially stepped deep hole system: 1) The radial (diameter direction) static stiffness of the thin-walled ring body is insufficient , it is easy to cause clamping instability; 2) The axis of the stepped deep hole is easy to deviate, and the parallelism of 0.06mm is difficult to guarantee; 3) The processing steps of the stepped deep hole system are complicated and the processing efficiency is very low (about 6h); 4 ) The concentricity φ0.015mm between the φ7.5H8()mm hole and the φ6H8()mm hole in the step deep hole is difficult to guarantee