소성∙가공 (Transactions of Materials Processing)
- 제7권6호
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- Pages.554-561
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- 1998
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- 1225-696X(pISSN)
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- 2287-6359(eISSN)
반도체 리드프레임의 프로그레시브 가공을 위한 공정설계 자동화 시스템
An Automated Process Planning System of Lead Frame for Progressive Working
초록
This paper describes a research work of developing a computer-aided design of lead frame semicon-ductor with piercing operation which is very precise for progressive working. An approach to the sys-tem is based on to knowledge-based rules. Knowledge for the system is formulated from plasticity theories experimental results and the empirical knowledge of field experts. This system has been writ-ten using AutoLISP to AutoCAD on a personal computer and is composed of three main modules which are input and shape treatment production feasibility check and strip-layout module. Based on the knowledge-based rules the system is designed by considering several factors such as material and thickness of product complexities of blank geometry and punch profile, and availability of press. Also strip-layout drawing generated by piercing operation according to punch profiles considered V-notch dimple. pad chamfer spank cavity punch camber and cross bow of lead frame is displayed in graphic forms. This system can be used by a novice who may not have any knowledge of tool design and will invrease efficiencies to the designer in this field.
키워드