Novel guide column and guide sleeve structure of crankshaft forging die

Abstract

The invention discloses a novel guide column and guide sleeve structure of a crankshaft forging die. The novel guide column and guide sleeve structure is used for guiding the relative movement between an upper die forging die body and a lower die forging die body of the forging die. The novel guide column and guide sleeve structure comprises three guide column and guide sleeve sets arranged on the parting face between the upper die forging die body and the lower die forging die body. Each guide column and guide sleeve set comprises a guide sleeve only fixed to and positioned on the upper die forging die body or the lower die forging die body, and a guide column which is only fixed to and positioned on the lower die forging die body or the upper die forging die body, corresponding to the guide sleeve on the upper die forging die body or the lower die forging die body and is positioned in the guide sleeve in a slidable and penetrating manner. The three guide column and guide sleeve sets include the two guide column and guide sleeve sets at the two ends of one side of the parting face, and the guide column and guide sleeve set on the other side of the parting face, wherein only one end of the guide column and guide sleeve on the other side of the parting face is positioned. The distribution direction of the guide columns and the guide sleeves, on the upper die forging die body and the lower die forging die body, of the corresponding two guide column and guide sleeve sets is opposite to the distribution direction of the guide column and the guide sleeve, on the upper die forging die body and the lower die forging die body, of the other guide column and guide sleeve set. The novel guide column and guide sleeve structure is simple in structure, beneficial to die arrangement, die replacement and adjustment, convenient and rapid to operate and use, capable of effectively solving the problem that the forging piece offset amount is difficult to control, high in forging process stability and good in product consistency.

Description

technical field [0001] The invention belongs to the technical field of forging, and in particular relates to a novel guide post and guide sleeve structure of a crankshaft forging die. Background technique [0002] The crankshaft is a key part of the engine, most of which are formed by forging. The typical process is: blanking-induction heating-blank making, pre-forging, final forging-trimming-correction-heat treatment-shot blasting-flaw detection-surface treatment -wrap up and store. Among them, the final forging process is an important process of forging forming, and the shape and precision of the crankshaft largely depend on the effect of final forging. [0003] In actual production, due to the complexity of the crankshaft forging, the rigidity and orientation of the production equipment are difficult to be absolutely guaranteed, and the mold loading and other reasons lead to a certain degree of misalignment in the final forging, which affects the quality of the forging. ...

AI Technical Summary

Problems solved by technology

[0003] In actual production, due to the complexity of crankshaft forgings, the rigidity and orientation of production equipment are difficult to guarantee absolutely, and the mold loading and other reasons lead to a certain degree of misalignment in the final forgings, which affects the quality of forgings

In general forging dies, only equipment guide posts, guide sleeves or die locks are used as guides. There is a large misalignment of forgings, and the forging process is unstable. Therefore, the following technical difficulties and quality problems are likely to occur during crankshaft forging:

[0004] 1. The displacement of forgings is large, and the shape, size and accuracy of forgings are difficult to guarantee;

[0005] 2. The operating space of forging workers, manipulators or walking beams is small, and it is inconvenient to transfer forgings between stations;

[0006] 3. The stability of the forging process is poor, and the shape and size of the forgings fluctuate greatly;

[0007] 4. It is inconvenient to operate and position the mold, the time for mold loading and mold debugging is long, and the scrap rate is high

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