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여은구,조선형,이용신 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.4
Formability in deep drawing process depends not only on a drawability of workpiece material but also on process conditions such as die punch corner radius, lubricant conditions, punch-die clearance etc. For instance, bending resistance should be reduced by increasing die round appropriately, drawing load should be minimized by improving the lubricant condition between die and material, and blanking load should be increased by selecting a pertinent punch round and by augmenting the friction resistance in punch. In this study, a multi-stage deep drawing process is analyzed using ABAQUS. The effects of formability factors, such as die shoulder radius, punch-die clearance and coefficient, are investigated, and the results are also discussed in detail.