Patent ID: 6311597
Filing Date: 2001-11-06
Classification: B21D,Y10T

Abstract:
A self-guiding punch and die set for forming metal parts, comprising: a punch assembly having:a punch shoe including a first side and a second side operatively engaged by a portion of a stamping press on said second side, said first and second sides being referenced to a common center, said punch shoe to hold at least one toola stripper guide bushing comprising a cylindrical outer wall having an inner surface, an outer surface and a bottom annular wall projecting radially inwardly from said inner surface so as to define a central opening dimensioned to permit passage of said at least one tool and such that said stripper guide bushing is disposed in surrounding and enclosing relation to said punch shoe wherein said punch shoe and said stripper guide bushing are formed so as to be symmetric about said common center; and a die assembly havinga die shoe aligned with and confronting said punch shoe, including a die nest having at least one through-bore; and,die nest guide bushing disposed in surrounding and enclosing relation to said die nest, wherein said die nest guide bushing is symmetric about said common center and is dimensioned larger than said punch shoe and said stripper guide bushing, such that when said stamping press is actuated, said die nest guide bushing slidingly receives and guides said punch shoe and said stripper guide bushing around a full periphery of said punch shoe and said stripper guide bushing during substantially a full stroke of said stamping press. and the die shoe during at least a portion of a stroke of said stamping press.