Patent ID: 6626281
Filing Date: 2003-09-30
Classification: B21D,B26D,Y10T

Abstract:
A workpiece shift apparatus comprising:a bottom plate, a first horizontal piston cylinder installed on the bottom plate and having a first horizontal piston rod being moveable horizontally in a first direction, a first handspike connected and moveable with the first horizontal piston rod in the first direction; a middle plate slidably attached on the bottom plate, the middle plate defining a first cutout receiving the first handspike and thereby allowing the first handspike to move the middle plate in the first direction, a second horizontal piston cylinder installed on the middle plate and having a second horizontal piston rod being moveable in a second direction perpendicular to the first direction, a third horizontal piston cylinder installed on the middle plate and comprising a third horizontal piston rod moveable in the first direction, a second handspike extending from and being moveable with the third horizontal piston rod in the first direction; the third horizontal piston cylinder and second handspike both being moveable with the second horizontal piston rod in the second direction; and a top plate attached on the middle plate and adapted for holding a workpiece thereon, the top plate defining a plurality of second cutouts for sequentially receiving the second handspike and thereby allowing the second handspike to move the top plate in the second direction, wherein the first horizontal piston cylinder, first handspike and middle plate cooperatively control movement of the workpiece in the first direction, and the second horizontal piston cylinder, third horizontal piston cylinder, second handspike and top plate cooperatively control movement of the workpiece in the second direction.