三坐標(biāo)測量機(jī)測頭半徑補(bǔ)償實(shí)用算法

孫科 田懷文
西南交通大學(xué)機(jī)械工程學(xué)院,四川成都610031
摘　要:針對三坐標(biāo)測量機(jī)表面數(shù)據(jù)化測量過程，本文給出一種實(shí)用的測頭半徑補(bǔ)償算法。提出了采用兩次細(xì)化測量點(diǎn)的策略，首先沿測量線進(jìn)行測量點(diǎn)的插值細(xì)化，然后在測量線（截面）之間再次進(jìn)行插值細(xì)化。在此基礎(chǔ)上．對整個被測表面上各細(xì)化點(diǎn)，利用插值求導(dǎo)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(xì)化點(diǎn)的法向量．最后進(jìn)行測頭半徑補(bǔ)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