A new method for thread calibration on coordinate measuring machines

被引:23
作者
Carmignato, S [1 ]
De Chiffre, L
机构
[1] Univ Padua, DIMEG, Padua, Italy
[2] Tech Univ Denmark, IPL, DK-2800 Lyngby, Denmark
关键词
thread; calibration; coordinate measuring machine (CMM);
D O I
10.1016/S0007-8506(07)60622-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper presents a new method for the calibration of thread gauges on coordinate measuring machines. The procedure involves scanning of thread profiles using a needle-like probe, achieving traceability by substitution of different thread portions with corresponding paths on a calibrated sphere. The feasibility of applying the method to calibrate a parallel thread gauge with respect to all the relevant thread parameters was demonstrated experimentally using a precision CMM. Application of the comparator approach as described in ISO DTS 15530-3 gave measuring uncertainties comparable to the values from usual calibration methods on dedicated equipment, e.g. a measuring uncertainty of 1.8 mum was achieved for measurement of the pitch, and 2-2.5 mum for diameter measurements.
引用
收藏
页码:447 / 450
页数:4
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