Patent ID: 6295906
Filing Date: 2001-10-02
Classification: B21D,B23D,B26D,Y10T

Abstract:
A method for advancing and cutting tube blanks into desired lengths and ejecting an unusable piece of tubing comprising the steps of:selecting an apparatus for cutting a tubular workpiece comprising a cutting apparatus for cutting the tubular workpiece, a base for supporting said cutting apparatus and said tubular workpiece, a carriage mounted for independent movement with respect to said base, grippers attached to said carriage for securely holding said tubular workpiece during a cutting process, a pusher mounted on said carriage for reciprocal movement with respect to said carriage, said pusher being shaped to engage an end of the tubular workpiece, a sensor mounted to said carriage for sensing a location of said pusher with respect to said carriage, and a switch for initiating said cutting process;selecting a tubular workpiece to be cut and positioning said workpiece on said base in alignment with said cutting apparatus;initiating said cutting process by activating said switch, said activation causing said carriage to move longitudinally forward with respect to said tubular workpiece toward said cutting apparatus thereby contacting said pusher with an end of said tubular workpiece wherein said contact causes relative rearward movement of said pusher with respect to said carriage for a predetermined distance;upon said predetermined distance being sensed by said sensor, closing said grippers and securing said tubular workpiece to said carriage;continuing to alternately move said carriage forward predetermined lengths and activating said cutting apparatus thereby cutting desired lengths of tube from said tubular workpiece;upon said carriage reaching a predetermined distance from said cutting apparatus wherein no more desired lengths of tube may be cut from said tubular workpiece, said grippers being opened; andupon said opening of said grippers, said pusher stroking forward engaging said end of said tubular workpiece thereby ejecting said tubular workpiece through said cutting apparatus.