关键词: 三坐标测量机(CMM)；CAD/CMM集成；采样策略；路径规划；碰撞规避

Abstract:

Each key technique of a computer-aided inspection planning system based on 3D CAD and CMM was analyzed,and the related algorithms and principles for realization and the ways for solution were proposed,focusing on solving the related issues of sampling and path planning.The relevant factors determining the number and locations of sampled points were introduced in the sampling planning,and a step adaptive-subdivision sampling method based on regular sampling was proposed.Path planning firstly generated the initial paths by inspection sequence planning with the method in which the measurement points were sorted by the sums of weighted parameters of each point;and then modified the paths with collision detection and collision avoidance so as to generate collision-free inspection paths.Based on Microsoft VC++,a CAIP system was developed.The feasibility of the related algorithms was verified by computer implementations,and the results show that the system can accomplish the automatic inspection of common parts efficiently and intelligently.

Key words: coordinate measuring machine(CMM);CAD/CMM integration, sampling strategy;path planning;collision avoidance