Finish machining weight control method for two-sided thin-wall numerical control milling machine workpiece

Abstract

The invention provides a finish machining weight control method for a two-sided thin-wall numerical control milling machine workpiece, and relates to the field of weight engineering of overall design of planes. The finish machining weight control method is used for design of the two-sided thin-wall numerical control milling machine workpiece and weight control in the machining process and includes the steps that S1, the thickness of the two-sided thin-wall numerical control milling machine workpiece is designed as a thickness having symmetry tolerance with a design value; S2, a design model of the two-sided thin-wall numerical control milling machine workpiece is accurately controlled; S3, optimization design is carried out on the structural stability of the two-sided thin-wall numerical control milling machine workpiece; S4, in the machining process of the two-sided thin-wall numerical control milling machine workpiece, a base material is fixed to a tool; and S5, the base material is machined, and the machining size is measured and corrected in the machining process. According to the finish machining weight control method for the two-sided thin-wall numerical control milling machine workpiece, the two-sided thin-wall numerical control milling machine workpiece is designed and machined, the machining accuracy of a large two-sided thin-wall-structure part can be largely improved, and the weight reducing effect of the two-sided thin-wall numerical control milling machine workpiece in the machining process is improved.

Description

technical field [0001] The invention relates to the field of weight engineering in the overall design of an aircraft, in particular to a method for controlling the weight of a double-sided thin-walled number milled part for finishing machining. Background technique [0002] The machining process of aircraft parts is an important part of aircraft manufacturing technology. With the continuous improvement of aircraft technical performance and the wide application of CNC machining technology, the number of machined parts is increasing, especially the overall structural parts. , Among them, the overall wall panel is more and more used in the aircraft due to the reduction of the number of parts and connectors, the simplification of the coordination relationship, and the reduction of the assembly workload. [0003] The integral wall plate includes webs, ribs, connecting holes and peripheral reinforcement bosses. The integral wall plate with large outer dimensions, thin webs, and do...

AI Technical Summary

Problems solved by technology

[0003] The integral wall plate includes webs, ribs, connecting holes and peripheral reinforcement bosses. The integral wall plate with large outer dimensions, thin webs, and double-sided cavity structure has a large amount of metal removal and concentrated CNC machining processes. It is a double-sided thin-walled part structure, which is easy to cause instability and deformation during processing, and is difficult to process. It is difficult to realize high-precision processing of this type of parts

[0004] Therefore, when processing such parts, people always have the psychological state of "large size is safe, small size is dangerous". The weight of double-sided thin-walled digital milling parts is seriously overweight

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