Patent ID: 6123003
Filing Date: 2000-09-26
Classification: B23D,Y10T

Abstract:
A method of shearing a succession of tubular workpieces into shorter lengths using a shearing apparatus having an in feed side and exit side, said apparatus including fixed and orbitally movable tooling defining a shear plane at the interface between said tooling, said apparatus further including a mandrel which is colocated with the shearing plane; said method comprising the steps of:(a) incrementally feeding a first tubular workpiece on said mandrel through the tooling from the infeed side and shearing said first workpiece until the remaining uncut portion is of a scrap length;(b) feeding a second, subsequent tubular workpiece on said mandrel through the tooling to clear the scrap length into the exit side; thereafter(c) retracting the subsequent workpiece back through the tooling without shearing it and, thereafter(d) incrementally feeding the subsequent workpiece through the tooling and shearing said subsequent workpiece.