Die used for forming hollow work pieces through backward extrusion of hollow blanks
A hollow blank, back extrusion technology, applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. problems such as low production efficiency, to achieve the effect of improving flexibility and reliability, reducing production costs and improving production efficiency
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[0037] The specific implementation will be described in detail below in conjunction with the accompanying drawings (this embodiment is a further description of the present invention, rather than any limitation to the present invention).
[0038] figure 1 and figure 2 As shown, the present invention is a mold for back-extruding hollow parts from hollow billets, comprising two parts, a lower mold and an upper mold; Composition; the die is located on the lower template, connected with the lower template by screws and pins, the push rod is placed in the lower template, the top block is placed in the die and on the lower template; the upper mold part is composed of upper template 8, pad Plate 7, punch, cover plate 9; Its characteristic is: described punch is made up of fixed punch 6 and movable punch 5, and described fixed punch is positioned at backing plate, upper formwork, through screw, pin It is connected with the upper template and the backing plate, the movable punch is ...
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