Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Six Sigma Robust Design of Composite Hand for LCD Glass Transfer Robot

LCD 유리 이송용 복합재료 로봇 핸드의 식스 시그마 강건설계

  • 남현욱 (청주교육대학교 실과교육과)
  • Published : 2005.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

This research studied robust design of composite hand for LTR (LCD glass Transfer Robot). $1^{st}$ DOE (Design of Experiment) was conducted to find out vital few Xs. 108 experiments were performed and their results were statistically analyzed. Pareto chart analysis shows that the geometric parameters (height and width of composite beam) are more important than material parameters $(E_{1},\;E_{2})$ or stacking sequence angle. Also, the stacking sequence of mid-layer is more important than that of outer-layer. The main effect plots shows that the maximum deflection of LTR hand is minimized with increasing height, width of beam and layer thickness. $2^{nd}$ DOE was conducted to obtain RSM (Response Surface Method) equation. 25 experiments were conducted. The CCD (Central Composite Design) technique with four factors was used. The coefficient of determination $(R^{2})$ for the calculated RSM equation was 0.989. Optimum design was conducted using the RSM equation. Multi-island genetic algorithm was used to optimum design. Optimum values for beam height, beam width, layer thickness and beam length were 24.9mm, 186.6mnL 0.15mm and 2402.4mm respectively. An approximate value of 0.77mm in deflection was expected to be a maximum under the optimum conditions. Six sigma robust design was conducted to find out guideline for control range of design parameter. To acquire six sigma level reliability, the standard deviation of design parameter should be con trolled within $2{\%}$ of average design value

Keywords

References

  1. Choi, G. H., Han, C.W. and Lee, S. R., 2002, 'The Study on the Development of Composite Robot for TFT-LCD Glass Transport,' Journal of Korean Society of Mechanical Engineering, Vol. 26, No. 7, pp. 1357-1365 https://doi.org/10.3795/KSME-A.2002.26.7.1357
  2. Han, K. S., Hwang W. B. and Song J. I., 1991, 'Survey of Current Status of Composite Materials in Korea,' Journal of KSCM, Vol. 4, No. 2, pp. 79-95
  3. Lee, D. G., Kim, K. S., Lim, C. Y., Kawk, Y. K., 1988, 'Calculation of the optimal winding angle of the composite arm for the SCARA-Type Direct-Drive Robot,' Journal of KSCM, Vol. 1, No. 1, pp. 43-49
  4. Hyer, M.W. 1998, 'Stress Analysis of Fiber-Reinforced Composite Materials,' McGraw-Hill, p. 58
  5. ANSYS Release 8.0 Documentation
  6. Kang, S. C. and Kim, D. M., 1992, 'Structure Design of Composite Windmill Blade,' Journal of KSME, Vol. 16, No.1, pp. 162-174
  7. Lee, Y. S. and Lee, R. H., 1993, 'Design of Thick Composite Laminate for Maximum Thermal Buckling Load,' Journal of KSME, Vol. 17, No. 7, pp. 1761-1771
  8. Kim, C. W. and Hwang, W. B., 1996, 'Optimum Design of Cylindrical Composite Structure for Strength,' Journal of KSME, Vol. 20, No. 3, pp. 968-977
  9. Nam, H.W., Hwang, W. and Han, K.S., 2001, 'Stacking Sequence Design of Fiber Metal Laminate for Maximum Strength,' Journal of Composite Materials, Vol. 25, No. 18, pp. 1653-1683 https://doi.org/10.1106/7NV4-5J5R-XIUJ-PVXT
  10. Oh, S.H. and Lee, B.C., 2001, 'Global Optimization of Composite Structures Using Triangular Patch Algorithm,' Journal of KSME(A), Vol. 25, No.4, pp 671-684
  11. Arora, J.S., Elwakeil, O.A. and Chahande, A.I., 1995, 'Global Optimization Methods for Engineering Application: a Review,' Structural Optimization, Vol. 9, pp. 137-159 https://doi.org/10.1007/BF01743964
  12. iSight 7.1 online help manual

Cited by

  1. Approximate Multi-Objective Optimization of A Wall-mounted Monitor Bracket Arm Considering Strength Design Conditions vol.39, pp.5, 2015, https://doi.org/10.3795/KSME-A.2015.39.5.535