Korean Journal of Computational Design and Engineering (한국CDE학회논문집)

Society for Computational Design and Engineering (한국CDE학회)
권호 표지

A Study on Quality Improvement Method for Manufacturing Process Plan

제조공정계획의 품질개선기법에 관한 연구

  • 김인호 (동명대학교 로봇시스템공학과)
  • Published : 2008.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes a method for improving the process plan quality by use of dimensional tolerances. Dimensioning and tolerancing plays a key role in manufacturing process plan because the final part must ensure conformance with the dimensions and tolerances in its drawing. As a first step for the improvement of process plan quality, two resultant tolerances in design and process plan should be compared each other, and so a tolerance chart is used for acquisition and comparison of the two tolerances. In addition to two kinds of design and manufacturing tolerances, operational sequences or paths for the resultant dimension and tolerance are additionally recognized for measuring the quality of process plan quantitatively. Rooted tree is applied to find the related paths for the manufacturing resultant tolerances. A quality coefficient is defined by the components of two tolerances and their relations, the paths related to manufacturing resultant tolerances and the difficulty of an operation. In order to improve the quality of manufacturing process plan, the paths that two kinds of tolerances are the same or different in the rooted tree are recognized respectively and a method for tolerance rearrangement is developed. A procedure for improving the quality is suggested by combining the coefficient and the tolerance rearrangement method. A case study is applied to illustrate the efficiency of improvement method.

Keywords

References

  1. Denkena, B. et al., 'Knowledge Management in Process Planning', Annals of the CIRP, Vol. 56/1, pp. 175-180, 2007
  2. Wiendahl, H. P. et al., 'Changeable Manufacturing ?Classification, Design and Operation', Annals of the CIRP, Vol. 56/2, pp. 783-803, 2007
  3. Sadaiah, M. et al., 'A Generative Computer-Aided Process Planning System for Prismatic Components', Int. J. Adv. Manuf. Technol., Vol. 20, pp. 709-719, 2002 https://doi.org/10.1007/s001700200228
  4. Gologlu, C., 'A Constraint-based Operation Sequencing for a Knowledge-based Process Planning', Journal of Int. Manuf., Vol. 15, pp. 463-470, 2004 https://doi.org/10.1023/B:JIMS.0000034109.17959.90
  5. Zhang, H., Advanced Tolerancing Techniques, John Wiley & Sons, Inc., 1997
  6. Whybrew, K., Britton, G., Bobinson, D. and Sermsuti-Anuwat, Y., 'A Graph-theoretic Approach to Toler-ance Charting', Int. J. Adv. Manuf. Technol., Vol. 5, pp. 175-183, 1990 https://doi.org/10.1007/BF02601605
  7. Tang, X. and Davies, B., 'Computer Aided Dimension Planning', Int. J. of Production Research, Vol. 26, pp. 283-297, 1988 https://doi.org/10.1080/00207548808947859
  8. Tang, G., Fuh, Y. and Kung, R., 'A List Approach to Tolerance Charting', Computers in Industry, Vol. 22, No. 3, pp. 291-302, 1993 https://doi.org/10.1016/0166-3615(93)90096-J
  9. Ji, P., 'An Algebraic Approach for Dimensional Chain Identification in Process Planning', Int. J. of Production Research, Vol. 37, pp. 99-110, 1999 https://doi.org/10.1080/002075499191940
  10. Ji, P. and Xue, J. B., 'Process Tolerance Control in a 2D Angular Tolerance Chart', Int. J. Adv. Manuf. Technol., Vol. 20, pp. 649-654, 2002 https://doi.org/10.1007/s001700200202
  11. Kim, I. and Dong, Z., 'Efficiency Estimation of Process Plan Using Tolerance Chart', Transactions of the Society of CAD/CAM Engineers, Vol. 11, No. 2, pp. 148-155, 2006
  12. Eary, D. and Johnson, G., Process Engineering for Manufacturing, Prentice-hall, pp. 98-119, 1962