Abnormal-shaped tooth star-shaped part forging method and die special for abnormal-shaped tooth star-shaped part forging method

Abstract

The invention discloses an abnormal-shaped tooth star-shaped part forging method and a die special for the abnormal-shaped tooth star-shaped part forging method. The abnormal-shaped tooth star-shaped part forging method includes the following steps: calculating the size of a workblank piece with the reserved working allowance, and determining the size of workblank materials of a forging piece according to the size; conducting blanking according to the determined size to obtain the workblank materials of the forging piece, and heating the workblank materials of the forged piece to be at the forging temperature; placing the heated workblank materials of the forged piece into a pre-forged forging cavity with abnormal-shaped teeth; pressing down an upper punching head to enable the forging cavity to be filled with the workblank materials of the forged piece to form a star-shaped part in the mode that the abnormal-shaped teeth are arranged outside a middle blind hole to complete pre-forged molding; taking out the obtained pre-forged piece from the forging cavity to punch the middle blind hole. By means of the abnormal-shaped tooth star-shaped part forging method, the forging time number is decreased, the follow-up mechanical cutting machining procedures and allowance are reduced, the manufacturing cost is reduced, the workblank piece with the abnormal-shaped teeth is directly formed in the three-direction pressing stress state, the filament line and the density degree of the forged piece are further improved, the mechanical property of the end product is effectively improved, and the service life of the end product is effectively prolonged.

Description

technical field [0001] The invention relates to a processing method for a star-shaped part with special-shaped teeth, in particular to a forging method for a star-shaped part with special-shaped teeth and a special mold thereof. Background technique [0002] As one of the important parts in the mechanical special motion mechanism, the special-shaped tooth star parts are widely used in the machinery industries such as automobiles, electronics, and ships. It has irreplaceable transmission characteristics, such as figure 1 Shown is one of the more typical star-shaped parts with special-shaped teeth. [0003] The shape and relative direction of the tooth top 11' and tooth bottom 12' on the periphery of the above special-shaped tooth star-shaped parts are uncertain. Such structural characteristics make most of the current machining of special-shaped tooth star-shaped parts mainly by mechanical cutting, which is not only time-consuming. , low efficiency, and a lot of material...

AI Technical Summary

Problems solved by technology

In this forging process, the pre-forging billet 31' obtained by pre-forging 3' forging does not have a tooth profile, and the peripheral special-shaped teeth still need to be machined, and the machining allowance is relatively large, and the teeth The metal flow line breaks after part processing, which seriously affects the mechanical properties and service life of the product

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