Abstract

CFRP/Ti laminates are widely used in critical parts such as aircraft skin and wings because of their excellent material properties. However, the common problem of the two materials is that they are difficult to process and the surface quality of the parts is poor. In this paper, the experimental study of milling CFRP/Ti laminate with diamond coated element edge tool was carried out. By combining theoretical analysis with experimental method, the variation law of cutting force and surface morphology of CFRP/Ti laminate under different cutting parameters was obtained. The results show that the cutting force decreases with the increase of spindle speed and the decrease of feed speed; With the milling process, the maximum increase rate of cutting force reaches 160%, the minimum increase rate is 20%, and the cutting force fluctuates greatly. Large areas of resin coating and groove area appear in CFRP processing area, while obvious vibration marks and scratches appear in titanium alloy processing area, and the surface quality has gradually deteriorated.

摘要

CFRP/Ti层压板因其优异的材料性能被广泛用于飞机蒙皮和机翼等关键部件。但是，这两种材料的共同问题是加工难度大，零件表面质量差。本文开展了金刚石涂层元件刃具铣削CFRP/Ti层压板的实验研究。将理论分析与实验方法相结合，得到了CFRP/Ti层压板在不同切削参数下切削力和表面形貌的变化规律。结果表明，随着主轴转速的增加和进给速度的降低，切削力减小；随着铣削加工，切削力的最大增幅达到160%，最小增幅为20%，切削力波动较大。