提出了一種適合于回轉(zhuǎn)體刀具———鉆頭的激光視覺(jué)三維形貌測(cè)試系統(tǒng),介紹了系統(tǒng)的組成和測(cè)量原理,討論了系統(tǒng)中由于安裝的傾斜和偏心等引起的測(cè)量光束不共面和多組測(cè)量數(shù)據(jù)不同心等問(wèn)題。重點(diǎn)研究了將傳感器坐標(biāo)系中的測(cè)量數(shù)據(jù)轉(zhuǎn)換到鉆頭坐標(biāo)系中的標(biāo)定方法,并對(duì)鉆頭中有標(biāo)準(zhǔn)圓和沒(méi)有標(biāo)準(zhǔn)圓來(lái)確定旋轉(zhuǎn)中心兩種情況進(jìn)行了討論。實(shí)驗(yàn)結(jié)果表明:用本標(biāo)定方法對(duì)鉆頭和標(biāo)準(zhǔn)圓橫截面的形貌數(shù)據(jù)進(jìn)行計(jì)算,其直徑測(cè)量精度可達(dá)到10～20μm。
關(guān)鍵詞: 　結(jié)構(gòu)光; 鉆頭; 標(biāo)定; 三維形貌
Abstract : A laser vision 32D measurement system for drill geometry is presented . The principle and the measure2 ment system are described. There are two problems caused by the tilt and the eccentricity of the system , which caused different groups of the measurement data in one cross section not being in one surface and with different centers. The methods for solving the problems are analyzed. The calibration method for translating the raw data of sensor coordinate in2 to drill coordinate system is studied in detail. The two conditions for calibration and data merging with and without stan2 dard circle as reference are discussed. The experiment results show that the accuracy of diameter measurement of cross section of standard bar and drill flute is in the range of 10～20μm.
Key words : Structure light ; Drill ; Calibration ; 32D geometry