• Title/Summary/Keyword: 헤밍금형

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Timing Chart Auto-Design system development for an Automated hemming die design (헤밍금형설계의 자동화를 위한 타이밍선도 자동설계시스템개발)

  • 정효상;조윤행
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.973-976
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    • 2004
  • So far, this report is written by knowledge and standard through several reference drawing and experienced contents with drawing hemming die. The contents about actual design is so huge that I will write about it next time. Timing chart is important to hemming die because of link position and numbers. Timing chart need a very much design time because link number and position have to applied for each case. In this paper developed an automatic timing chart and link position by relation and Pro/Program of Pro/Engineer. The method used relation rule of design parameter for timing chart. In the future, I believe that simple easy to correct and reasonable price hemming die will be producted.

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A Study on the impact on the quality of hemming the number of hemming process (헤밍 공정의 횟수가 헤밍 품질에 미치는 영향에 관한 연구)

  • Shin, Na-Eun;Choi, Moon-Ho;Choi, Young-Deok;Choi, Hae-Un;Jang, Rae-Seong;Choi, Kye-Kwang;Kim, Sei-Hwan;Yun, Jae-Woong;Lee, Chun-Kyu
    • Design & Manufacturing
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    • v.10 no.1
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    • pp.26-30
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    • 2016
  • In this study, it was investigated by comparing the experimental hemming by the 3 steps and 2 steps in order to stabilize the quality of the hemming process. In the experimental results, the three-step hemming superior to the two-step one and the dimensional stability of part that was made by the three-step on was high. When the second stage Hemming has been found that the deflection caused by the force to the wear of the punch becomes larger plane can be folded by the hemming crimping and crimp uncertain.

Automatic Generation of Timing Chart for Car Panel Hemming Die Design (자동차 패널용 헤밍 금형설계를 위한 타이밍차트 자동생성)

  • Kim, D.J.;Song, Y.J.;Chung, H.;Han, Y.H.
    • Transactions of Materials Processing
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    • v.15 no.7 s.88
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    • pp.496-503
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    • 2006
  • The inner and outer car panels for bonnet, door, and trunk lid are assembled by hemming rather than welding. To achieve successful fabrication of these panels, the complicated timing chart of hemming units for pre-and main hemming stages should be made to optimal one. In this study, a design system for automatic timing chart generation is developed. Using AutoCAD VBA and EXCEL data chart, hemming die design parameters and guidelines were put into the program to give hemming unit drawings and consequent timing charts. Then the prepared timing charts were checked and modified. The effectiveness of the system is verified by applying it successfully to hemming unit design for bonnet panel joining.

The Die Design of STS304 Bezel Frame for The Strength Reinforcement in Hemming Process (강도보강용 STS304 베젤 프레임 헤밍 공정의 금형 설계)

  • Kim, G.H.;Lee, S.H.;Kim, B.M.
    • Transactions of Materials Processing
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    • v.17 no.6
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    • pp.436-442
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    • 2008
  • As the structure of a mobile phone becomes thin to catch up with a slim product trend, the structural strength and resistance to shock of TFT-LCD module are getting to be reduced. Hence, TFT-LCD module is the strength reinforced by bezel frame. The bezel frame was produced by the multi hemming processes with several folding parts. The determination of the optimal number of hemming part and structure of bezel frame are very important process parameter to obtain the strength of that. The effect of process parameters on strength of bezel frame was investigated by FEA. Based on the result of FEA, the experiment was performed using manufactured hemming die, the result of the experiment was compared with FEA and verified. Also, three point bending tests were performed to check the strength of bezel frame.