Female die fastening device of cylindrical closed forging die

Abstract

The invention provides a female die fastening device of a cylindrical closed forging die. The device can solve the problem that a cylindrical female die body is frequently pulled out of a lower die base of an existing cylindrical closed forging die during puncher pin separating, production is interrupted, and the die is scrapped. The female die fastening device comprises a copying spliced block, atransverse clamping assembly and a longitudinal clamping assembly. The shape of the copying spliced block is rectangular, and the front side surface and the left side surface of the copying spliced block are attached to a transverse datum surface and a longitudinal datum surface on a lower die base correspondingly. Arc-shaped through holes are formed in the opposite side surfaces of the two clamping blocks of the copying spliced block correspondingly and penetrate through up and down. The radius of the arc-shaped through holes is equal to that of a female die body. An annular step is formed in the outer side of the top surface of the female die body. Lock inserts are fixed into the arc-shaped through holes in the circumferential direction of the arc-shaped through holes and axially pressthe step surface of the annular step. The transverse clamping assembly and the longitudinal clamping assembly can be movably mounted on the lower die base and used for pressing the rear side surface and the right side surface of the copying spliced block. The two clamping blocks are detachably fixed to the lower die base.

Description

technical field [0001] The invention relates to the field of forging processing, in particular to a female die fastening device of a cylindrical closed forging die. Background technique [0002] Forging is a workpiece processing method that obtains the required geometric shape, size and quality by deforming the blank and controlling its internal structure and performance under certain conditions. Important means of parts. Generally speaking, the internal structure and mechanical properties of forged parts are better than cast parts and welded parts, so this processing method is more and more used in various industrial fields. [0003] The geometric shape, dimensional accuracy and surface quality of closed forging can be as close as possible to the product. In the closed forging process, the gap between the die (ie, the lower die) and the punch (that is, the upper die) remains unchanged, and the billet is formed in the closed die cavity around the die, without horizontal fl...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems that the existing cylindrical closed forging die often pulls out the cylindrical female die from the lower die seat when the punch is separated, resulting in production interruption and the scrapping of the die, the present invention provides a cylindrical closed forging die. The female mold fastening device of the forging die can effectively fix the female mold when the punch is separated from the female mold, preventing the female mold from being pulled out from the lower die holder

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