传统机床与Free-Form型机床运动的等效转换

给出了基于空间坐标系变换把普通铣齿机调整参数转换成Free form型机床调整参数的原理与方法。在两种机床坐标系下保持刀盘相对工件的运动关系不变 ,通过耦合两种机床下的坐标系使两种机床的运动关系完全等效 ,由此原理推出了普通铣齿机向Free form型机床转换的显式转换公式 ,该公式适用于任意一种传统的加工方法和机床。最后通过实例 ,利用TCA进行了分析验证。本文提出的转换方法概念清晰 ,转换简单 ,不会引起转换误差 ,是一种针对两类机床完全等效的转换方法。

Study on Kinematic Equivalent Transformation from Traditional Machine Tools to Free-Form Ones

Basing on spatial coordinate transformation, the theory and method are provided for transforming traditional machine tool settings to free-form ones. Under the two types of machine tools coordinate systems, keeping the relative movement between cutter and workpiece unchanged, we make their movement relation exactly equivalent by coinciding the coordinate systems. The explicit function formulas to transform from the traditional machine tool to free-form ones are derived by means of the above method, which can be adopted in any traditional generating method and machine tool. Finally, an example is given to verify the above method by means of TCA tooth contact analysis.