Slender and thin-walled step hole type inner-circle and outside-square structure finish machining method

Abstract

The invention relates to a slender and thin-walled step hole type inner-circle and outside-square finish machining method, belongs to the technical field of non-ferrous metal finish machining in the field of machining and aims to provide a method for machining a thin-walled rod part which can machine high-precision stainless steel materials and adopts an inner-circle and outside-square semi-blind hole structure. According to the technical scheme, inner hole machining is realized according to the following steps: step 1, performing a rough turning process on an inner circle; step 2, performing half finished turning, finished turning and precision grinding processes on the inner circle in the step in sequence; step 3, performing artificial aging treatment on the excircle in the step 2; step 4, honing an inner hole by using a honing tool. Outside processing is performed according to the following steps: step 1, clamping a workpiece by adopting a combined clamp; step 2, positioning an outside square machining benchmark through a core shaft; step 3, performing line cutting on the outside square; step 4, performing artificial aging treatment on the outside square in the step 3; step 5, performing half fine grinding on the outside square; step 6, performing fine grinding on the outside square. The slender and thin-walled step hole type inner circle and outside structure precision machining method provided by the invention is applied to inner circle and outside square finish machining.

Description

technical field [0001] The invention discloses a thin-walled step hole-type inner circle and outer square structure finishing method, which belongs to the technical field of nonferrous metal finishing in the mechanical processing field. Background technique [0002] Due to thin wall and poor rigidity, thin-walled rod parts are prone to deformation and knife vibration during processing. It is difficult to process with general methods, and the processing quality is difficult to guarantee. The following processing methods are generally used for this kind of parts: a. remove the allowance inside and outside first; b. process the inner hole to the size; c. layer turning, approaching the given size; d. match the mandrel and turn the outer circle. At present, the processing of thin-walled rod parts in China is mainly ordinary alloy steel and sleeve parts with circular inside and outside. For thin-walled rod parts made of stainless steel and with a semi-blind hole structure of inner...

AI Technical Summary

Problems solved by technology

If the honing process is used to process the through hole, it can generally meet the process requirements, but the blind hole stepped hole workpiece is a technical problem for the honing process. Even with the best equipment, it is much more difficult to process blind holes than to process through holes.

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