Kinematics characteristic analysis for typical turn-mill parts machining

To determine the tool position relative to the workpiece in machining of typical turn-mill parts, an analysis method for kinematics characteristic of typical turn-mill parts machining was presented. Based on analyzing the configuration of the turn-mill machine tool, the kinematics chain was determined, and the kinematics model was found according to the modified D-H notation. The form-shaping function matrixes were derived based on forward kinematics and inverse kinematics. Through the transformation of homogeneous coordinates, the tool position relative to the workpiece in different feature machining of turn-mill parts was described, and the kinematics functions of each axis were obtained by combining with the form-shaping function matrixes. Thus, the kinematics characteristic in turn-mill machining was analyzed by proposed function. Through an example of kinematics characteristic analysis of non-coaxial turn-mill part, the effectiveness of this methodology was proved to analyze the tool position relative to the workpiece and the movement of each axis in turn-mill machining.