沿刀轴Z向控制方式摇臂铣加装C轴后的扩展应用

Extended Application of Rocker Milling Machine Installed with C-axis along Tool Z-axis Control Mode

数控摇臂铣床加装转台C轴后再利用其摇臂做相对固定的主轴摆角即可实现摆头+摆台组合的五轴加工,从而使其加工工艺范围得到拓展,但针对摇臂铣Z轴运动控制方式的不同,其坐标转换的算法规则也不同。在使用Master CAM构建相适应的固定倾角五轴加工刀路的基础上,对沿刀轴Z向伸缩控制的机床结构模式,进行了后处理的算法修正,并通过VERICUT多轴仿真系统实施了验证。

CNC rocker milling machine was installed with rotating C-axis and then the rocker shaft was used to make relatively fixed swing angle, then five axis machining based on head＋table combination could he realized, so the scope of manufacturing process was expanded. But for the rocker milling with different Z-axis motion control method, the rules of its coordinate transformation algorithm were different. On the basis of a fixed angle five axis machining tool paths built by using MasterCAM, aiming at the machine structure mode of stretching control along the Z-axis, a post-processing algorithm correction was conducted. And it was verified through multi-axis simulation system VERICUT.