Machining anti-deformation clamp for thin-wall baffle part

Abstract

A machining anti-deformation clamp for a thin-wall baffle part comprises a positioning clamp body, a pressing hook and a clamp base. The positioning clamp body is annular and is provided with an annular step groove, the to-be-machined part is installed in the annular step groove, and the back of a to-be-machined portion at the outer side of the to-be-machined part tightly abuts against the outermost step face of the positioning clamp body; the clamp base is fixedly connected with the lower portion of the positioning clamp body; and the pressing hook is L-shaped, the upper end of the pressing hook is buckled to the to-be-machined part, and the lower end of the pressing hook penetrates through the clamp base and fastens the to-be-machined part on the positioning clamp body. By means of the machining anti-deformation clamp, the to-be-machined part is supported by the clamp in an auxiliary manner, it is guaranteed that when the part is in a pressed state, the back face of the part is completely attached to the auxiliary supporting plane, the part cannot deform in the cutting process, and the machining quality of the part is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of aero-engine parts processing, and in particular relates to a processing anti-deformation fixture for thin-walled baffle parts. Background technique [0002] In an aero-engine, the low-pressure turbine tailgate is a key part of the core machine, and its function is to limit the low-pressure turbine blades. Such as image 3 As shown, the thinnest part of the web is only 1.7mm, and the width of the tip of the grate is about 0.3mm. The shape of the part is relatively complex, the wall is thin, the rigidity is poor, and there are many arc transfers, so it is easy to deform during processing. During the turning process of the construction platform, the back processing surface of the part is in the suspended processing state, the cantilever is long, and the margin is large, which will cause large deformation of the part and cause the finishing dimension guaranteed by the previous process to be out of tolerance....

AI Technical Summary

Problems solved by technology

The shape of the part is relatively complex, the wall is thin, the rigidity is poor, and there are many arc transfers, so it is easy to deform during processing

During the turning process of the construction platform, the back processing surface of the part is in a suspended state, the cantilever is long, and the margin is large, so it will cause large deformation of the part, resulting in the out-of-tolerance of the finishing dimension guaranteed by the previous process

As a thin-walled baffle part, it is very easy to be deformed by the cutting force during the processing process. Due to the high dimensional accuracy of the part, it is easy to cause the part to be out of tolerance.

The general clamping method cannot solve this problem. It has always been a difficult problem in the industry to prevent the deformation of thin-walled baffle parts during processing.

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