在普通三坐标测量机上快速检测石油管螺纹用的测头系统.PDFVIP

1998 5 　　　　　 31　 3 　　　　　　 　　　　　　　　 May　 1998 JOURNAL OF TIANJIN UNIVERSITY 　Vol. 31　No. 3　 曲兴华 　陆伯印　金篆芷　贾果欣 () 　　介绍了一种在普通三坐标测量机上使用的三维测微测头系统,论述了测头的测量原理、 机械结构、模 和控制电路,为在普通三座标测量机上对石油管螺纹进行快速测量提供了 一种途 径. 　,, 　 TH711 - STUDY ON A PROBE SYSTEM FOR SPEED MEASURING OIL TUBE THREAD ON A COMMON CMM Qu Xinghua　Lu Boyin　 Jin Zhuan h　i Jia Guoxin (State Key Laborator of Precision M easuring Technology and Instru ents, Tianjin University) 　 3 Abstract The paper introduces a si ple D icro eter probe syste used on a coordination ea- suring achine ( CMM) ,discourses on easure ent theory, echanical structure,analog and con- trol circuitry of the syste . It gives a way of easuring oil tube threads with a high-speed on a co on CM M. 　 , , Keywords coordination easuring achine three di ensional icro eter probe oil tube thread 　　 The auger ste s and petroleu pipes used in the oil industry are all connected with conic threads. The precision of the oil tube thread affects directly the connection strength and the per eability. The easure ent of the thread gauge is nor ally carried out on CMM. At present, there are two kinds of ethods, easuring with a scanning probe or with a switch trigger probe. The first kind is used for high precision and speed,but it re- quires a scanning function of the achine. The second kind is cheap in cost,but it takes uch ti e and the precision is poor. To use the advantage of the first and overco e the disadvantage of the second, we have ade efforts on a co on CMM without scanning func