A Study of the Progressive Working of an Electric Product Using a 3D Shape Recognition Method |
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Authors: | JC Choi Chul Kim JH Kim |
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Affiliation: | (1) School of Mechanical Engineering, Research Institute of Mechanical Technology (RIMT) at Pusan National University, Pusan, Korea, KR;(2) Department of Precision Mechanical Engineering at Pusan National University, Graduate school, Pusan, Korea, KR |
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Abstract: | This paper describes the development of the computer-aided design of an electric product using bending and piercing operations
for progressive working. The system is based on knowledge-based rules. Knowledge for the system is formulated from plasticity
theories, experimental results, and the empirical knowledge of field experts. The system has been written in AutoLISP in AutoCAD
on a personal computer and is composed of four main modules, which are input and shape treatment, flat pattern layout, strip
layout, and die layout modules. Based on knowledge-based rules, the system is designed considering several factors, such as
bending radius, bending angle, effect of springback, material and thickness of a product, bending sequence, and the complexities
of the blank geometry and punch profiles. It generates the 3D strip layout drawing for an electric product. The die layout
module carries out die design for each process from the results of the strip layout module. Results obtained using the modules
enable the designer and manufacturer of piercing and bending dies to be more efficient in this field. |
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Keywords: | : Bending and piercing Die layout 3D strip layout Flat pattern layout Knowledge-based rules |
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