On high speed precision blanking of IC l
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Takashi Jimma; Fumitaro Sekine
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Article
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1990
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Elsevier Science
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English
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The factors affecting the dimensional accuracy of blanked IC lead-frames are discussed. Attention is focussed on the elimination of the residual stress in the material caused by roll-slitting. Improvement in the designing and manufacturing of the blanking tool is explained and the mechanism of vibra