Originally published at: 难加工材料及其薄壁件超声铣削加工研究 – RSS News
摘要：钛合金材料的难加工性和薄壁零件的刚度差限制了钛合金薄壁构件在航空航天工程中的广泛应用。为了提高几何精度，提出了一种工件沿进给方向振动的超声波振动辅助（UVA）端铣技术方法，并研究了UVA铣削钛合金TC4薄壁工件时相应的铣削力特性。研究过。通过理论分析，对UVA铣削中刀齿的运动轨迹进行了分析。通过信噪比分析得出影响铣削力的重要因素。结果表明，UVA铣削中的径向切削力小于传统铣削中的径向切削力。超声振动时切削力高频波动。而轴向切削进给量是影响铣削力的核心因素。
Abstract: Hard machinability of titanium alloy material and poor stiffness of thin-walled part restricted the extensive applications of titanium alloy thin-walled component in aerospace engineering. In order to increase geometric accuracy, a method of ultrasonic vibration assisted (UVA) end milling technology with workpiece vibrating in feeding direction was put forward in this paper, and the corresponding milling force characteristics in UVA milling of titanium alloy TC4 thin-walled workpiece were researched. Through theoretical analysis, the path of cutter tooth in UVA milling was analyzed. The important factors that affect milling force are obtained with the signal to noise ratio analysis. Results show that the radial cutting force in UVA milling is smaller than that in traditional milling. Cutting force fluctuate in high frequency when treated ultrasonic vibration. And the axial cutting feed is the core factor that affects the milling force.