Turning method of long thin wall composite shell body formed by metal and glass fiber reinforced plastics

Abstract

The invention discloses a turning method of a long thin wall composite shell body formed by metal and glass fiber reinforced plastics. The method comprises the steps that (1) glass fiber reinforced plastics outer circle rough turning is carried out; (2) the two end faces of the shell body are subjected to rough turning; (3) glass fiber reinforced plastics outer circle fine turning is carried out; and (4) the two end faces of the shell body, an inner hole and an annular groove are subjected to fine turning. Rough-fine machining processes are used, technology allowance is distributed reasonably, deforming amount is controlled, metal shell inner hole accuracy is controlled and is used as the machining standard of a structure piece after recombination, an end cap and a soft claw are used for clamping, clamping deforming is lowered, through a low-temperature cold air cooling mode, a cutting environment is improved, a tool and cutting parameters during cutting machining are stipulated, product tool service life is prolonged, and machining efficiency is improved. The technology method is reasonable and reliable, product deforming is small, and the machining quality of the composite shell body can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and more specifically relates to a turning method of a long and thin-walled composite shell formed of metal and glass fiber reinforced plastics. Background technique [0002] In recent years, with the continuous advancement of science and technology, material technology has developed rapidly. As a new type of material, composite material has gradually become one of the leading materials in the 21st century. Composite materials have the characteristics of light weight, high specific strength, specific modulus, corrosion resistance, high temperature resistance, and ablation resistance. They are ideal materials for weapons such as aircraft, missiles, and aerospace vehicles. "Metal + composite material" is a kind of structural parts that are relatively common in certain types of products. At present, it is mainly manufactured by winding, packaging and other technologies, and glass fiber reinforc...

AI Technical Summary

Problems solved by technology

[0006] (2) The rigidity of the part structure itself is poor, and there is clamping deformation during machining;

[0007] (3) Due to the requirements of material performance, cooling fluid cannot be used in the processing process after glass winding, and the tool wears seriously, causing the size to be out of tolerance;

[0008] (4) During the processing, the cutting force is large, the cutting temperature is high, the tool wear is serious, and the product accuracy is not easy to control;

[0014] The machining process of parts mainly involves the processing of inner and outer circles and end faces. The rough and finish machining of outer circles and inner holes is not controlled, which affects the accuracy of the subsequent composite shell. The size that needs to be coordinated increases and the turning difficulty increases, which directly leads to the subsequent wall thickness. uniform, unable to meet the design index; the rigidity of the part is poor, and the direct clamping of the outer circle turning is very easy to cause clamping deformation, which affects the wall thickness and dimensional accuracy; the compressed air is at room temperature, which has limited function in reducing the cutting heat of the tool, and cannot achieve cooling Fluid Functional Requirements

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