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Binding Force Control of Uni-Pressure Cushion in Automobile Panel Stamping
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English
Abstract
Recently, single action draw with cushion replaces draw with double action presses.
In the single action draw, binding fluctuation problem occurs by its structure.
We applied an NC cushion to prevent the problem. We compared the cushion force wave with and without an NC cushion. The NC cushion showed effective damping.
We studied the binding force control of a side member outer panel. The panel didn't have the formable range of binding. This means the lowest binding force to avoid wrinkling, still had crack problems. We introduce four patterns of binding force control with the NC cushion. As a result, we found the suitable pattern to suppress the surface distortion.
Controlling the binding force shows effectiveness as a means of suppressing surface distortions.
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Authors
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Citation
Kirii, K., Shinabe, M., Hirabayashi, Y., and Akiyama, M., "Binding Force Control of Uni-Pressure Cushion in Automobile Panel Stamping," SAE Technical Paper 950916, 1995, https://doi.org/10.4271/950916.Also In
References
- Asai, Watanabe, Andou Kirii, “Apparatus for Controlling Dynamic Characteristics of Press Load” United States Patent Number 4, 599, 887 1985
- Asai, Andou Kirii, “Apparatus for Controlling Dynamic Characteristics of Outer Load” United States Patent Number 4, 667, 496 1985
- Kirii, Toyoda, Utsumi Asai, “Method of and Apparatus for Controlling Forming Press Conditions” United States Patent Number 4, 698, 991 1985
- Murata, Ebine Matsui, “Effect of Control of Local Blank Holding Forces on Deep Drawability of Square Shell” 18th IDDRG Biennial Congress 1994
- Hirose, Kojima, Ujihara Hishida, “Development of Forming Technique with Real-time Control of Blank Holding Force” 17th IDDRG Biennial Congress 1992
- Hishida Wagoner, “Experimental Analysis of Blank Holding Force Control in Sheet Forming” SAE International Congress and Exposition 1993
- Kirii, Ono, Shinabe Akiyama, “Development and Application of Stable Stamping Technology in Single Draw Process - (1st Report) Reproduction Techniques of the Surface Pressure in a Cushion Surface -” #42 Plastic Forming Joint Conference 1992
- Kirii, Hirabayashi, Shinabe Ono, “Development of Stable Stamping Technology in Single Draw Process - (2nd Report) Study of Cushion Pin Load Equalizer -” Plastic Forming Spring Conference 1992
- Kirii, Ono Shinabe, “Hydraulic Cushioning System for Press, Having Hydraulic Power Supply Including Means for Adjusting Initial Pressure to be Applied to Pressure-Pin Cylinders” United States Patent Number 5, 299, 444 1992