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Organization of Circular Motion Accuracy Measuring System of NC Lathe using Linear Scales  

Kim Young Seuk (조선대학교 기전공학과)
Kim Jae Yeol (조선대학교 기전공학과)
Kim Jong Kwan (조선대학교 기계공학과)
Han Ji Hee (조선대학교 대학원 생산ㆍ가공공학과)
Jung Jung Pyo (조선대학교 대학원 생산ㆍ가공공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.13, no.5, 2004 , pp. 1-6 More about this Journal
Abstract
Measurements of circular motion accuracy of NC lathe have achieved with ball bar systems proposed by Bryan, but the ball bar systems have ifluenced on the measuring data by way of the accuracy of the balls and the contacts of balls and bar seats. Therefore in this study, error data during of circular motion of ATC(Automatic Tool Changer) of NC lathe will be acquired by reading zx plane coordinates using two optical linear scales. Two optical linear scales of measuring unit are fixed on z-x plane of NC lathe, and the moving part is fixed to ATC and then is made to receive data of coordinates of the ATC at constant time intervals using tick pulses comming out from computer. And then, error data files of radial direction of circular motion are calculated with the data read, and the aspect of circular motion are modeled to plots, and are analysed by means of statistical treatments of circularity, means, standard deviations etc.
Keywords
NC lathe; Circular motion accuracy; Circular motion errors; Error motion; Linear scale;
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  • Reference
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