Patent ID: 6220072
Filing Date: 2001-04-24
Classification: B21J,B21K,Y10T

Abstract:
A forming press of crankshafts having a crown, a slide, a forging unit for twisting with a twisting die, and a forging unit for reshaping, wherein:a pressing oil-hydraulic cylinder and a lift-up oil-hydraulic for lowering and raising the slide and a twisting oil-hydraulic cylinder for twisting a workpiece in the forging unit for twisting are directly mounted on the crown, the lift-up oil-hydraulic cylinder and the twisting oil-hydraulic cylinder each having a piston rod with the pressing oil-hydraulic cylinder and lift-up oil-hydraulic cylinder being connected to the slide;the piston rod of the twisting oil-hydraulic cylinder is connected to a pressing block having four corners;a twisting push rod is secured to each of the four corners of the pressing block, two of the four twisting push rods being disposed in a front corner and a back corner relative to a right side of the twisting die, the other two twisting push rods being disposed in a front corner and a back corner relative to a left side of the twisting die; andlower ends of the two twisting push rods on each side of the twisting die are connected to each other by a twisting-down beam and an untwisting beam below the slide.