Compound die with trimming and correcting functions for transmission shaft of car gearbox

Abstract

The invention discloses a compound die with trimming and correcting functions for a transmission shaft of a car gearbox. The compound die comprises a lower die holder, a female die holder, an ejector and an upper die holder, wherein the female die holder is arranged in the middle of the upper end of the lower die holder. The compound die has the beneficial effects that through the design of the lower die holder, the female die holder and the upper die holder, the compound die for the transmission shaft of the car gearbox can be converted into a single working step from a duplex working step, operation can be completed by only one person, and the labor cost of device operation is reduced; through the design of a guide column, a female die, a male die and the ejector, the compound die for the transmission shaft of the car gearbox can conduct effective edge cutting and correction work steps in a reciprocating motion manner through elastic deformation of upper die springs and lower die springs between the female die, the male die and the ejector, the forging takt is improved while good stability is achieved, the edge cutting quality is stable, the coaxiality is good, and various requirements of an automatic production line are met.

Description

technical field [0001] The invention relates to the technical field of automobile mold process design, in particular to a composite mold for a transmission shaft of a car gearbox with trimming and correction functions. Background technique [0002] Car gearboxes have widely used bearing units, in which the transmission bearing unit is the connecting shaft between the input shaft and the output shaft of the gearbox. With the continuous expansion of the automobile market, the production capacity of forgings has also increased, especially the output of shaft forgings has increased. The transmission shaft is a shaft, and the product structure is complex and difficult to form. Open die forging is adopted, and after forming, it is necessary to cut off the flash and correct the flange. [0003] Most of the existing composite molds for transmission shafts of car transmissions use traditional vertical forging transmission shafts to correct the flange after cutting off the flash, whi...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing composite molds for transmission shafts of car transmissions use traditional vertical forging transmission shafts to correct the flange after cutting off the flash, which is a two-step process. The mold base is a joint mold with two stations, which requires two people to complete. As a result, the labor cost is high. At the same time, the trimming quality stability and coaxiality of the existing composite mold for the transmission shaft of the car transmission are poor, and the coaxiality is poor, which cannot meet the requirements of the automatic production line. The production efficiency of the composite mold is low, the beat of the main machine is 8 seconds / beat, and the beat of the press is 10 seconds / piece. The beat of the press seriously affects the production efficiency. Therefore, a new type of transmission shaft with trimming correction function is urgently needed. Composite mold to solve existing problems

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