A Study on Enhancement of Grinding Accuracy by an Active Tool Control

  • Oh, Chang-Jin (Graduate school, Department of Mechanical Engineering, Chungbuk National University) ;
  • Kim, Ock-Hyun (Faculty, School of Mechanical Engineering, Chungbuk National University)
  • Published : 2002.05.01

Abstract

An approach to enhance dimensional accuracy of the grinding process has been presented, and grinding of a glass material with a metal-bonded diamond wheel has been studied. In this study, a grinding tool is suspended flexibly and controlled by an electromagnetic actuator. During grinding, profile error of a ground surface is indirectly measured and fed back to a control system. A model of grinding error has been suggested on which the indirect measurement has been based. An optimal PID control is adopted and effectiveness of the in-process feedback control has been verified experimentally.

Keywords

References

  1. Comstock, T. R., Tse, F. S. and Lemon, J. R., 1969, 'Application of Controlled Mechanical Impedence for Reducing Machine Tool Vibrations,' J. of Engineering for Industry, Trans. Of ASME, pp. 1057-1062
  2. Higuchi, T., Yamakuchi, T. and Tanaka, M., 1998, 'Development of a High Speed Non-Circular Machining NC-Lathe for Cutting a Piston-head of a Reciprocating Engine by Use of a New Servo Mechanism Actuated by Electromagnetic Attractive Force,' JSPE Vol. 62, No.3, pp. 453-457
  3. Kegg, R. L., 1965, 'Cutting Dynamics in Machine Tool Chatter, Contribution to Machine-Tool Chatter Research-3,' Trans. Of ASME, J. of Engineering for Industry, pp. 464-470
  4. Kwak Jae Sub and Ha Man Kyung, 2001, 'Force modeling and Machining Characteristic of the Intermittent Grinding Wheels,' KSME International Journal, Vol. 15-3, pp. 351-356
  5. Park, N. C., Park, Y. P. and Yang, H. S., 1996, 'Position and Vibration Control of a Flexible Manipulator Using ${\mu}$-Synthes,' KSME Journal A, Vol. 20-10, pp. 3186-3198
  6. Shahian, B. and Haussul, M., 1993, Control System Design Using MA TLAB, Prentice Hall
  7. Yazawa, T., Kohno, T., Uda Y. and Ohno, N., 1998, 'In-Process Workpiece Refered Form Accuracy Control(6th report),' JSPE Vol. 64, No. 12, pp. 1806-1810