Precision numerical control processing method for thin-wall aluminium plate partially provided with through holes

Abstract

The invention discloses a precision numerical control processing method for a thin-wall aluminium plate partially provided with through holes, and provides a processing method which can improve the processing stability of a product and guarantee the quality of the product. The rough processed workpiece is put at room temperature of 20 DEG C for 10 days, and performing size stability ageing treatment on the workpiece to eliminate inner stress; the fine processed workpiece is at the room temperature of 20 DEG C for 4 hours; measuring an actual inner diameter value of a hole by using an inside micrometer or a three-coordinate measurer, wherein the difference value between a medium value of a required size and an actually inner diameter is delta; modifying a reverse side fine processing procedure according to the difference value delta; and enlarging the diameter of an inner hole of a cylindrical surface of a workpiece three-dimensional model by delta, the other sizes is not changed reproducing a cylindrical surface fine processing numerical control procedure which meets the precision requirement, and continuously performing batch fine processing on the cylindrical surface in a through hole by using the numerical control procedure. By the processing method, the deformation of the thin-wall workpiece can be controlled, and the processing quality of the workpiece is guaranteed.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a precision numerical control machining method for a thin-walled aluminum plate part with through holes. Background technique [0002] Thin-walled workpieces are widely used in various industrial fields because of their light weight, low cost and compact structure. [0003] At present, the processing of thin-walled parts has always been a problem that plagues the machining industry. The reason is that the thin-walled parts have poor rigidity and weak strength. During the processing, they are deformed due to the influence of clamping force, heat, vibration and other factors, which makes it more difficult to guarantee the processing accuracy of the workpiece. Especially when precision machining of light-duty thin-walled aluminum plate workpieces with notched holes, the processing stability is very poor. If the clamping force is large, the workpiece will be war...

AI Technical Summary

Problems solved by technology

The reason is that the thin-walled parts have poor rigidity and weak strength. During the processing, they are deformed due to the influence of clamping force, heat, vibration and other factors, which makes it more difficult to guarantee the processing accuracy of the workpiece.

Especially when precision machining light thin-walled aluminum plate workpieces with notched holes, the processing stability is very poor

If the clamping force is large, the workpiece will be warped and deformed. When the workpiece is removed from the fixture after processing, the originally processed plane will retract into a curved surface due to elasticity, and the flatness requirements cannot be guaranteed; if the clamping force is small, The cutting force generated by the tool will drive the workpiece during processing, affecting the dimensional accuracy and smoothness of the processed workpiece, and the tool will scratch some facades of the aluminum plate, which will directly cause the workpiece to be overcut and scrapped

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