A machining fixture for large overhang casing parts in a narrow space

Abstract

The invention discloses a method for machining a narrow-space large-overhanging casing part and a clamp. The method comprises the steps that (1) radial auxiliary supporting and axial auxiliary supporting are added to a machined corresponding part, and the manner of clamping an elastic rubber ring through an upper baffle ring and a lower baffle ring is adopted for supporting; (2) a tool with a lengthened tool handle is adopted; and (3) a tool apron with the adjustable tool height is adopted and connected with a tool rest of a machine tool, the groove shape and position of a tool apron clamping tool groove are calculated through tool setting of the machine tool, and the tool apron and the lengthened tool are combined. The method has the beneficial effects that system rigidity can be improved; machining vibration is eliminated; assembly machining is achieved; design and assembly requirements are met; the assembly overproof situation is reduced; and timely and smooth delivery of engines is guaranteed.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method and a fixture for parts of a casing with a large overhang in a narrow space. Background technique [0002] With the improvement of engine performance and reliability, higher requirements are put forward for the machining accuracy of engine components. For some key dimensions and technical conditions, they were previously processed in a single-piece state and assembled after single-piece processing. And the assembly method will lead to the accumulation of errors, which will affect the assembly accuracy of the components. In order to reduce the accumulation of errors in each single-piece processing and affect the accuracy of the components, for important key dimensions, combined processing after assembly is required to improve the processing accuracy of components. However, during combined processing, parts The processing part is relatively closed, the overh...

AI Technical Summary

Problems solved by technology

[0006] 1) Add radial and axial auxiliary supports at the corresponding parts to be processed. In order to solve the problem of being able to support in narrow spaces, the upper and lower retaining rings are used to clamp the elastic rubber ring for support, which will not cause additional deformation of the parts, so as to solve the problem. The problem that the component processing space is too small to support;

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