A new process of punching and blanking for ring-jointed forgings

Abstract

The invention provides a novel stamping and edge-pressing technology for an integral loop forge. The technology includes the following steps that (1), a forge outer ring P1 and allowance are designed and the web thickness is set initially; (2), a forge inner ring P2 and allowance are designed; (3), a forge inner ring P3 is designed in forge separation, and the web thickness of the integral forge is determined, i.e., the internal diameter is determined as D1 after the dimension is designed according to the forge outer ring P1, then the external diameter generated after the inner rings are separated is determined as D1+0.5 mm, the web thickness L at the integrating position of the inner and outer rings is determined, and because the volume of the forge inner ring P2 and the volume of the forge inner ring P3 are unchanged, the value of the web thickness L depends on how much metal is needed in the stamping and edge pressing processes; and (4), a lifting pin is installed, a PKO mechanism is started, a male die is used for jacking, and it is ensured that an inner ring edge-pressing punch is discharged. Compared with an existing special integral forge technology, the novel stamping and edge-pressing technology has the beneficial effects of achieving forge separation, omitting the later turning separation process, improving efficiency of the whole part technology, saving resources and reducing cost.

Description

technical field [0001] The invention is applicable to the field of forging and separation of special forgings of connected inner and outer rings, and in particular relates to a new process of punching and blanking of connected forgings of ferrules. Background technique [0002] The one-piece forging of inner and outer rings is already a very common forging method, which can save materials and improve forging efficiency. It is very common in the forging process of high-speed upsetting forging machines. The conventional forging method for the forming of the inner and outer ring conjoined forgings is to design the inner ring in the inner diameter of the outer ring. After forming, the inner and outer rings are punched and separated, and finally the inner ring is punched to obtain two forgings of the inner and outer rings. as attached figure 1 As shown in the forming diagram of the conventional conjoined forging, it can be seen that the inner diameter D1 of the outer ring is obv...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new process of punching and blanking for the ferrule conjoined forgings, aiming at the problem that the existing special conjoined forgings whose inner diameter of the outer ring is smaller than the outer diameter of the inner ring cannot be forged and separated. The punching station of the inner ring implements the process of expanding the hole and pressing the edge to increase the outer diameter of the inner ring, so that it is possible to separate the inner and outer rings during forging, and realize the partial forming of the outer diameter of the inner ring separated by forging during the forging process, omitting the subsequent turning separation craft

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