Patent ID: 6067830
Filing Date: 2000-05-30
Classification: B21D,B26D,B26F,Y10T

Abstract:
A method of cutting opposing holes in a side wall of a tubular workpiece and removing cut out slugs therefrom, comprising the steps of:(a) pressurizing the workpiece;(b) providing first and second axially aligned reciprocating members each having a functional end, said functional ends disposed for application to a first wall portion of the workpiece and a second wall portion of the workpiece opposite said first wall portion, respectively, and the second member having a larger transverse dimension than said first member and reciprocating in a passageway extending laterally from said workpiece;(c) passing said first member through said first and second wall portions;(d) cutting first and second slugs from said first and second wall portions of the workpiece, respectively;(e) advancing the functional end of the first member toward the functional end of the second member and capturing the cut out slugs between the functional ends of the first and second members;(f) moving said members so that the functional ends of the members and the slugs captured therebetween progress along said passageway in a direction laterally away from the workpiece;(g) separating the functional ends of said members at a region of the passageway spaced from the workpiece; and(h) removing the slugs from the functional ends.