Closed cold-temperature precision forging die for straight-tooth bevel gear

Abstract

The invention relates to the technical field of dies, in particular to a closed cold-temperature precision forging die for a straight-tooth bevel gear. The closed cold-temperature precision forging die for the straight-tooth bevel gear comprises a precision forging upper die, a precision forging lower die and an upper punch. The precision forging upper die is formed by combining a plurality of upper die units, each upper die unit is provided with a corresponding driving mechanism, the upper die units are mutually connected under driving of the driving mechanisms and are enclosed to form the precision forging upper die or the upper die units can be separated in scattering mode to facilitate forge piece taking out, and a channel used for the upper punch to pass through is arranged at the mutually connected upper ends of all the upper die units. The precision forging die is not provided with a lower punch so that manufacture cost is reduced, die assembling errors are reduced and forging accuracy is improved. The precision forging die can be form parts with complex shapes in once forming mode and accordingly is high in production efficiency. Simultaneously, metal flow lines are continuously distributed along the appearance of the forge pieces during forging so that the forge pieces are good in mechanical property.

Description

technical field [0001] The invention relates to the technical field of dies, in particular to a closed cold-temperature precision forging die for straight-toothed bevel gears. Background technique [0002] Precision forging forming technology, that is, net forming technology, refers to the forming technology of mechanical components that only need a small amount of processing or no further processing after the part is formed, that is, the workpiece blank that is close to the shape of the part is manufactured. Compared with traditional forming technology, it reduces the subsequent cutting amount, reduces material, energy consumption, and processing procedures, significantly improves production efficiency and product quality, reduces production costs, and improves the market competitiveness of products. [0003] There are many precision forging processes that have been applied to production. According to different forming temperatures, it can be divided into hot precision for...

AI Technical Summary

Problems solved by technology

However, in the process of cold forging, the plasticity of the workpiece is poor, the deformation resistance is large, the requirements for the mold and equipment are high, and it is difficult to form parts with complex structures. At the same time, the existing mold structure is complex and the production cost is high, so it needs to be improved.

Images