A near-optimal part setup algorithm for 5-axis machining using a parallel kinematic machine

摘要

A near-optimal part setup model (NOPSM) is developed. The purpose of this model is to find the near-optimal part setup position and orientation based on the workspace, stiffness and accuracy capability of a parallel kinematic machine that can be used for 5-axis machining. To build the proposed NOPSM, the knowledge on the hexapod kinematics, workspace, stiffness, structural imperfection, nonuniform thermal gradient and accuracy is required. Thus, it is a comprehensive performance capability study for a parallel kinematic machine. The proposed model is a software solution concept to improve the machine's performance. It is very cost effective and can also be modified for other 5-axis machine tool applications.