Wheel forging and pressing preforming die

Abstract

The invention discloses a wheel forging and pressing preforming die. The wheel forging and pressing preforming die comprises an upper die structure and a lower die structure, wherein the lower die structure comprises a lower die base, a preforming die cushion, a preforming die core and a preforming die body; the preforming die core and the preforming die body are arranged on the lower die base through the preforming die cushion; the preforming die body is of an annular structure; the preforming die core is positioned in the annular preforming die body; an annular protrusion is arranged on theupper surface of the preforming die body; and the preforming die body with the protrusion and the preforming die core are matched to form a die pit structure. The wheel forging and pressing preformingdie is suitable for hot rolling production of reverse spoke plate rim plate distance large-difference overall rolled steel wheels, metal flowing is reasonable in the wheel hot forming process throughthe die, no folding defect exists on the surface, production operation is reasonable, process adjustment is convenient, the wheel hot forming percent of pass can be effectively increased, and therefore the wheel quality is improved.

Description

technical field [0001] The invention relates to the technical field of wheel forming dies, in particular to a wheel forging pre-forming die. Background technique [0002] The inner and outer sides of conventional train wheels are almost symmetrical with respect to the spoke plate, but there are also wheels with a large difference in the distance between the rim and plate of the anti-spoke plate. The distance between the outer rim and plate of the wheel reaches 95mm, and the extra length of the inner hub is 120mm. The cross-sectional shape of the finished wheel is as follows: figure 1 shown. [0003] The mainstream thermoforming process of integral rolled steel wheels consists of four steps: preforming, forming, rolling, and bending. The pre-forming step distributes the metal quantity of the hub and rim; the forming step obtains the final shape of the hub and the pressed web, and at the same time provides a good shape of the rim for the next step of wheel rolling. The pref...

AI Technical Summary

Problems solved by technology

For wheels with large discrepancies between rims and rims, it is difficult to obtain a forming blank that is filled with both the inner hub surface and the outer rim surface at the same time in the forming process by using a general preforming mold. The qualified rate of thermoforming is low, which affects the quality of the wheel.

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