标题：Process Planning and Program Generation for STEP-compliant NC Manufacture of Complex Surface Components
作者：Liu Ri-liang; Xu Yuan-fan; Wang Yi-ran; Zhang Cheng-rui
作者机构：[Liu Ri-liang; Xu Yuan-fan; Wang Yi-ran; Zhang Cheng-rui] Shandong Univ, Sch Mech Engn, Jinan 250061, Peoples R China.
会议名称：2nd International Conference on Advanced Design and Manufacture
会议日期：SEP 24-26, 2009
来源：ADVANCED DESIGN AND MANUFACTURE II
关键词：NC programming; STEP-NC; freeform surface; computer-aided manufacturing
摘要：A framework for process planning and NC programming based on STEP and STEP-NC data model is proposed in this paper. The STEP standard and its data structure for CAD models, especially the NURBS based representation of complex surfaces is analyzed. Then the general strategy for process planning using the STEP-NC data structure is presented, and the calculation of cutter contact points and cutter location data for producing complex surfaces based on the geometrical information is addressed. Finally a prototype system is developed for demonstration of the proposed STEP-compliant NC programming approach for complex surface components.