Sheet workpiece punching technology

Abstract

The invention discloses a sheet workpiece punching technology, and belongs to the technical field of punching technologies. A punch is utilized for punching materials into a workpiece and comprises apunch body, a die base, an upper die assembly and a lower die, and the die base is in sliding connection to a sliding rail on the front side of the punch body. The upper die assembly is fixed to the bottom of the die base. The lower die is fixed to an installing table on the front side of the punch body and matched with the upper die assembly up and down. An oil cylinder material beating device isarranged at the bottom of the die base and located in an avoiding groove in the middle portion of the upper die assembly. A floating ejector rod assembly capable of floating up and down is arranged in the upper die assembly, the oil cylinder material beating device jacks the upper end of the floating ejector rod assembly, and the lower end of the floating ejector rod assembly stretches into a diecore groove in the bottom of the upper die assembly. The oil cylinder material beating device arranged below the die base in the punch is utilized for pushing the floating ejector rod assembly arranged in the upper die assembly, when the upper die assembly of the punch returns, the workpiece disengages from the upper die assembly, the falling height of the workpiece is small, deformation is avoided, and the punching quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of punching technology, in particular to a blanking technology for thin plate workpieces. Background technique [0002] Punching is a stamping process that uses a die to separate part of the material or process part from another part of the material, process (process) part or waste. Blanking is a general term for the separation processes such as shearing, blanking, punching, punching, notching, sectioning, chiseling, edge trimming, tongue cutting, cutting, and trimming, and it accounts for the largest proportion in stamping production. In the blanking process, the sheet metal is sheared and deformed along a certain contour line by using the cutting edge of the die and separated. Except for the metal near the shear contour line, the sheet itself does not produce plastic deformation, so it is punched by a flat plate. The processed parts are still in a flat shape. [0003] Existing stamping equipment generall...

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Problems solved by technology

[0006] Aiming at the problem that the existing stamping process uses a punching rod to beat the material, the workpiece falls out of the mold cavity, and the falling height is large, and the workpiece is easily deformed when it hits the lower die after falling. The invention provides a blanking process for thin plate workpieces. The material is punched into a workpiece. The punching machine includes a punching machine body, a mold base, an upper mold assembly and a lower mold. There is a relief groove in the middle of the upper mold assembly, and an oil cylinder feeding device is installed at the bottom of the mold base. The oil cylinder feeding device is located in the relief In the groove, the upper die assembly is equipped with a floating ejector assembly that can float up and down. The floating ejector assembly is pushed by the oil cylinder feeding device, and the workpiece is ejected from the upper die assembly at the same time as the upper die assembly returns, and the workpiece falls. The height is small, it will not cause deformation of the workpiece, which greatly improves the punching quality

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