The Influence of Punch-Die Clearance on Blanked Edge Quality in Fine Blanking of Automotive Sheets

Abstract:

Fine blanking is a widely used process that permits the production of precise finished components which are cleanly sheared through the whole cutting surface. It can be eliminated secondary operations, such as milling, grinding, etc. Many studies on the weight reduction of automobile for fuel saving were underway. The clearance of the punch-die of a fine blanking tool is an important design factor that affects the sheared surface of a product. If the clearance is too big, a fractured surface would occur in the product while if it is too small, bulging would occur. The main objective of this paper is to provide an overview of the effect of clearance between punch and die in a fine blanking tool on quality of sheared surface. A well as to specify the effect of mechanical properties of sheared steel sheet on blanked edge quality given by ratio of h_v/a_0.

• Periodical: Materials Science Forum (Volume 818)
• Pages: 264-267
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.818.264
• Online since: May 2015
• Authors: Emil Spišák*, Janka Majerníková, Emília Spišáková
• Keywords: Blanked Edge Quality, Clearance, Cutting Tool, Fine Blanking

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