An automatic production line for bolt hot forging diameter reduction

Abstract

The invention discloses a hot-forging reducing automatic production line for bolts. The production line comprises a chamfering and reducing integrated machine, a reducing oil cylinder and a temperature control loading device, wherein the chamfering and reducing integrated machine comprises a frame, a conveying device, a chamfering device and a reducing device; the reducing oil cylinder comprises a reducing positioning block, a reducing cylinder body, a reducing groove, a demoulding ejector rod and a control center; and the temperature control loading device comprises heating grooves, temperature sensors, first temperature control centers, second temperature control centers, loading manipulators, servo motors and hydraulic systems. According to the production line disclosed by the invention, chamfering and reducing of the bolts can be performed on same equipment, and meanwhile, full-automatic bolt feeding and conveying can be further realized, so that the production efficiency is high. The reducing oil cylinder can reduce the bolts automatically, and the bolt hot-forging process is controllable in real time.

Description

【Technical field】 [0001] The invention relates to the technical field of bolt hot forging, in particular to the technical field of an automatic production line for bolt hot forging diameter reduction. 【Background technique】 [0002] Under the prior art, instrument lathes are used to process the chamfering of blanks, which has the disadvantages of low production efficiency, inconsistent dimensions of the chamfering parts, and low safety. Under the existing technology, the diameter of the threaded shank often has different size requirements, so it is necessary to reduce the diameter of the threaded shank. The traditional process is to use a lathe or punch to process it, which has low efficiency, deviation in concentricity, and production costs. High, the length of the shrink rod is limited, and the mold is easy to be damaged. Under the existing technology, before hot forging, the head of the bolt blank is heated by manual control. The heating time varies, and the temperature ...

AI Technical Summary

Problems solved by technology

[0002] Under the existing technology, the instrument lathe is used to process the chamfering of the blank, which has the disadvantages of low production efficiency, inconsistent dimensions of the chamfering part, and low safety.

Under the existing technology, the diameter of the threaded shank often has different size requirements, so it is necessary to reduce the diameter of the threaded shank. The traditional process is to use a lathe or punch to process it, which has low efficiency, deviation in concentricity, and production costs. High, the length of the retractable rod is limited, and the mold is easy to be damaged, etc.

Under the existing technology, before hot forging, the head of the bolt blank is heated by manual control. The heating time varies, and the temperature of the blank is prone to be too low or too high. These phenomena may cause the bolt to fall off or decarburize. , it is easy to damage the mold or stick to the mold, which will have serious consequences on the quality of the bolts

Under the existing technology, after the hot forging billet is heated, it is all manually operated, and the time for the billet to enter the mold varies, resulting in differences in the temperature of the heated billet, resulting in inconsistent product sizes

In the existing technology, mechanical punching machines are used. The stroke of the mechanical punching machine is short, and the length of the hot forging bolts often exceeds the stroke of the punching machine. In this way, only the moving die can be used for hot forging, resulting in inaccurate concentricity of the upper and lower dies and slow loading and unloading speed.

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