三坐標測量機測頭半徑補償實用算法

孫科 田懷文
西南交通大學機械工程學院,四川成都610031
摘　要:針對三坐標測量機表面數據化測量過程，本文給出一種實用的測頭半徑補償算法。提出了采用兩次細化測量點的策略，首先沿測量線進行測量點的插值細化，然后在測量線（截面）之間再次進行插值細化。在此基礎上．對整個被測表面上各細化點，利用插值求導的方法求出其橫向和縱向切向量，然后對切向量叉積求得各細化點的法向量．最后進行測頭半徑補償計算。[著者文摘]

A measure of probe radius compensation for CMMSUN Ke, TIAN Huai-wen School of Mechanical Engineering, SouthWest JiaoTong University, Chengdu 610031, ChinaAbstract:A practical probe radius compensation is described in this paper for CMM measurements of the surface data. Propose a strategy that refine the measureing points two times, interpolate of the measureing points along the measureing line, then interpolate of the cross-sections. After this, derive the horizontal and vertical shear vector of the refineing points using methods of interpolation and derivation, and then cross-product the two shear vectors to obtain the law vector of each refineing points, and compensate the probe radius in the end.[著者文摘]

Key words:measurement; interpolate; refineing cross-section; radius compensation