Journal of Welding and Joining

  • 제29권2호
  • /
  • Pages.94-101
  • /
  • 2011
  • /
  • 2466-2232(pISSN)
  • /
  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
권호 표지
DOI QR코드

DOI QR Code

저항점 용접에서 전극팽창에 관한 동적모델

Dynamic Model for Electrode Expansion in Resistance Spot Welding Machines

  • 투고 : 2010.11.30
  • 심사 : 2011.02.24
  • 발행 : 2011.04.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A lumped mass damped vibratory model was proposed for quantitative understanding of welding machine characteristics. An experimental setup was developed to determine the mechanical parameters (moving mass m, equivalent stiffness k and damping c) which govern the dynamic mechanical response of the resistance spot welding machine. During the test, acceleration of the electrodes for each level of applied load was measured by accelerometer, filtered and numerically integrated to find the corresponding velocity and displacement. The machine dynamic parameters were determined by finding the unknowns of the proposed model with experimental data. A Simulink model was proposed to investigate the influence of these mechanical parameters on the welding process. The electrode response was simulated by changing values of stiffness and damping. It was observed that both of the machine parameters(c, k) have significant effect on the response of electrode head.

키워드

참고문헌

  1. Resistance Welder Manufacturers Association: Resistance Welding Manual, 4th ed., RWMA, Philadelphia, 1989
  2. Donald J. Spinella, John R. Brockenbrough and Joseph M. Fridy: Trends in Aluminum Resistance Spot Welding for the Auto Industry, Welding Journal, 84-1(2005), 34-40
  3. Yarong Wang, Jicai FENG and Zhongdian ZHANG: Influence of Surface Condition on Expulsion in Spot Welding AZ31B Magnesium Alloy, J. Mater. Sci. Technol. 21-5(2005), 749-752 https://doi.org/10.1179/174328405X46097
  4. Paul Buschke and Walter Schappacher: Trends in the Automotive Industry Steer New NDT Applications, ECNDT 2006-Fr.1.6.2, Germany, 1-12
  5. Chyuan-Yow Tseng, Young-Chang Chen and Tu-Fa Wang : Quality Monitoring for Micro Resistance Spot Welding, 12th IFToMM World Congress, Besancon (France), 2007, 18-21
  6. Hee Seok Chang: In-process Monitoring and Control of Weld Nugget Geometry for Resistance Spot Welding Process, PhD Dissertation, KAIST, 1989, South Korea
  7. Justin Shriver, Huei Peng and S.Jack Hu: Control of Resistance Spot Welding, Proceedings of the American Control Conference, San Diego, California, 1999, 187-191
  8. C.T.Ji and Y.Zhou: Dynamic Electrode Force and Displacement in Resistance Spot Welding of Aluminum, Journal of Manufacturing Science and Engineering, 126 (2004), 591-598 https://doi.org/10.1115/1.1763185
  9. Tang H, Hou W, Hu S, Zhang H, Feng Z and Kimchi M :Influence of welding machine mechanical characteristics on the resistance spot welding process and weld quality, Welding Journal, 82-5(2003), 116s-224s.
  10. P. Wu, W. Zhang and N. Bay: Characterization of Dynamic Mechanical Properties of Resistance Welding Machines, Welding Journal, 84-1 (2005), 17s-21s
  11. Jianzhong Chen, Dave F. Farson, Kevin Ely and Tim Frech: Modeling small-scale resistance spot welding machine dynamics for process control, Int. J. Adv. Manuf. Technol., 27-7&8 (2005), 672-676
  12. Hee Seok Chang and Hyo Chul Kwon: In-Process Monitoring of Micro Resistance Spot Weld Quality using Accelerometer, Journal of Korean Welding Society, 29-1 (2011), 115-122 https://doi.org/10.5781/KWJS.2011.29.1.115
  13. Tae. G. Lim, Hyung S. Cho and Hee Seok Chang: The Use of Artificial Neural Networks in the Monitoring of Spot Weld Quality, Journal of Korean Welding Society, 11-2 (1993), 27-41 (in Korean)
  14. C.W. Park, T.Y. Kang, W.Y. Kim and S.M. Cho: The Quality Estimation of Welding using Dynamic Resistance and Electrode Movement in Resistance Spot Welding, Abstract of 2002 Spring Annual Meeting of Korean Welding and Joining Society, 39 (2002), 22-25 (in Korean)