Browse > Article

Investigation of Influences of Synchronizing Errors on the Tapping Characteristics and Thread Quality in the Ultra-High-Speed Tapping  

이돈진 (부산대학교 지능기계공학과)
김선호 (한국기계연구원 지능형정밀기계연구부)
안중환 (부산대학교 기계공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.9, 2003 , pp. 40-46 More about this Journal
Abstract
Synchronizing errors between the spindle motor and the z-axis motor directly influences the cutting characteristics and the thread quality in tapping, because the tapping process is accomplished by synchronizing the movement of the z-axis with the revolutionary spindle motion. Generally synchronizing errors are decided by tile parameters of the servo system and commanded velocity. The excessive synchronizing errors which are induced by the parameter mismatch and high cutting velocity can cause tap breakage due to the abrupt increase of cutting torque or damage the thread accuracy by overcutting the already cut threads. In this paper, the influences of the synchronizing errors on the tapping characteristics in the ultra high-speed tapping will be described and a minimum level of synchronizing errors necessary to maintain the quality of the cut thread will be presented.
Keywords
Synchronizing Error; Tapping Torque; Thread Quality; Feedforward Control;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim, S.H., Kim, D.H., Kim, S.M., Lee, D.J., Lee, S.K., Ahn, J.H., Lee, S.G., 'Development and Evaluation of Ultra High-Speed Tapping Machine,' J. of the KSPE, Vol.19, No.11, pp.221-227, 2002   과학기술학회마을
2 Lee, D.J., Kang, J.W., Jeon, H.B., Kim, S.H., Ahn, J.H., 'Modeling of High-Speed Tapping Torque Considering Friction Force,' J. of the KSPE, Vol.18, No.11, pp.67-73, 2001   과학기술학회마을
3 Choi, M.S., ' A Study on Tapping Torque in High Speed Tapping,' J. of KSPE, Vol.18, No.12, pp.3195-3201, 1994   과학기술학회마을
4 Lorenz, G., 'A Study on the Effect of Tap Geometry,' Mech. Eng. Transaction, Inst. Eng., Australia,Me, Vol.3, pp.101-104, 1978
5 Agapiou, J.S., 'Evaluation of the Effect of High Speed Machining on Tapping,' J. of Eng. for Ind, Vol.116, pp.457-462, 1994   DOI   ScienceOn
6 Futami, S. and Nakamura, H., 'High-Speed Precision Numerically Controlled Tapping using Dual Predictive Control,' AMC2000-Nagoya, pp.369-400, 2000
7 Liu, T.I. and Ko, E.J., 'Diagnosis of Tapping Operations using an A.I. Approach,' Proceedings of the 1991 IEEE Int'l Conf. Robotics and Automation, pp.1556-1561, 1991   DOI