Title: Shim adjustment and supporting cell relocation with a multipoint supported deep-drawing die

Authors: Takahiro Ohashi, Takao Morita, Yasunori Nakazawa, Tadashi Nishihara, Hisaki Watari, Takanori Yamazaki

Addresses: National Institute of Advanced Industrial Science and Technology, 1-2 Namiki, Tsukuba, Ibaraki 305-8564, Japan. ' National Institute of Advanced Industrial Science and Technology, 1-2 Namiki, Tsukuba, Ibaraki 305-8564, Japan. ' Department of Mechanical Engineering, Kokushikan University, 4-28-1 Setagaya, Setagayaku, Tokyo 154-8515, Japan. ' Department of Mechanical Engineering, Kokushikan University, 4-28-1 Setagaya, Setagayaku, Tokyo 154-8515, Japan. ' Oyama National College of Technology, Nakakuki, Oyama, Tochigi 323-0806, Japan. ' Oyama National College of Technology, Nakakuki, Oyama, Tochigi 323-0806, Japan

Abstract: Purpose of this paper is that authors report a new die structure and an adjustment method in comparison with the traditional shim adjustment. The authors developed a multipoint supported die and suggest supporting cell relocation as adjustment method. The authors evaluate distribution of imposed load on supporting cells and their deformation at the slide-stroke-end. They also evaluate product accuracy with a 3D scanner. To make load distribution and height of the cells uniform in a time, we must find some goal function for adjustment to satisfy the above two goals, or develop the dedicated structure and procedure to adjust them in a time. The suggested multipoint support system and supporting cell relocation is one of the methods to adjust them in a time. Numerical simulation should be applied to reduce time of trial blows in future. Suggested die structure is hopeful to carry out more accurate large deep drawings. More and more accurate deep drawings are required today and the suggested die structure will contribute to it. [Received 7 Nov 2005; Accepted 30 Dec 2006]

Keywords: manufacturing; processing; plastic forming; sheet metal forming; die structure; shim adjustment; cell relocation; deep drawing dies; deformation; product accuracy; 3D scanning; multipoint support.

DOI: 10.1504/IJCMSSE.2007.016439

International Journal of Computational Materials Science and Surface Engineering, 2007 Vol.1 No.4, pp.509 - 522

Published online: 28 Dec 2007 *

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