Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Influence of Chucking Forces upon the Accuracy of Circular Hole in Boring Process on the Turning

선반으로 보링가공 할 때 척킹력이 가공 정도에 미치는 영향

  • 이상수 (동양공업전문대학 기계자동화공학부 기계과) ;
  • 강신길 (동양공업전문대학 기계자동화공학부 기계과) ;
  • 전영석 (동양공업전문대학 기계자동화공학부 기계설계과)
  • Published : 2008.04.15
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Abstract

The cutting process of materials is accompanied with the elastic and plastic deformation due to chucking forces in the boring process of thin holes on the turning. Upon removal of chucking forces at the end of process, the original shape is remained in the plastic deformation; on the other hand, it is modified in the elastic deformation due to spring back. Fixing materials by chucks on the turning has influence on roundness because the process is conducted with unbalanced distribution load induced from the fixing of three jaws. Moreover, the amount of spring back depends on the magnitude of fixing forces. We studied the change of roundness according to fixing forces as well as the method to reduce the influence of chucking forces.

Keywords

References

  1. Pahlitzsch, G. and Hellwing, W., 1967, "The Clamping Accuracy of Tree-Jaw Chuck," Advances in Machine Tool Design and Research. part 1, pp. 97-118
  2. Brash, M., 1958, "Eccentric Turning with a Three- Jaw-Chuck," Machinery 64, 10, pp. 158-159
  3. Schneider, F. J., Nov., 1969, "Roundness of Measurement, Part 2-The Proposed Standard," Mechanical Engineering, pp. 36-40
  4. Yoon, K. Y., 1970, "Influence of Jaw Chuck upon the Accuracy of Circular Hole in Boring Process," J. of the Korean Society of Mechanical Engineers, Vol. 10, N0. 3, pp. 137-146
  5. Davis, T. L., 1971, "An Analysis of Geometrical Errors in Boring," MS Thesis, Michigan Technological University, USA
  6. Solaia, V. and Kalajdzic, M., 1968, "Some Experiment with Three-and Four-Jaw Chucks," Annals of CIRP, Vol. 16. pp. 131-136