Cold forging press machine with large rated tonnage point

Abstract

The invention discloses a cold forging press machine with a large rated tonnage point, comprising a machine body, a driving device, a multi-link mechanism, a slide block and a guide rail, wherein the multi-link mechanism comprises a triangular connecting rod, a rotating part, a rocker and a slide block connecting rod; the rotating part comprises a rotating shaft and an eccentric part taking the rotating shaft as a rotating center, the rotating shaft drives the eccentric part to rotate under the drive of the driving device, and the eccentric part is hinged with a first peak of the triangular connecting rod; one end of the rocker is hinged to the machine body and the other end is hinged with a second peak of the triangular connecting rod; and the upper end of the slide block connecting rod is hinged with a third peak of the triangular connecting rod and the lower end is connected with the slide block. The center of the slide block is arranged right below the rocking center of the rocker. The invention provides the cold forging press machine with the large rated tonnage point, which has the advantages that the rotating part is not easy to damage and the torsion for driving the rotating part is smaller.

Description

technical field [0001] The invention relates to a cold forging press, in particular to a large nominal force stroke cold forging press. Background technique [0002] Cold forging refers to a technology that applies pressure to the workpiece at room temperature to deform it. Compared with hot forging, it has many advantages such as high mechanical properties, good surface quality, low energy consumption, and less pollution. It has been used in many automobiles It is widely used in the forming of parts. However, due to the low plasticity of metal at room temperature, the deformation resistance is relatively large, and it is easy to crack. Therefore, as a cold forging forming equipment, not only must the nominal force stroke be large, but it must also ensure that the speed in the forming area is low and stable, so as to minimize work hardening during forming, reduce deformation resistance, and prevent cracks. [0003] Chinese patent document CN100418752C discloses a motor-dri...

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that the cold forging press in the prior art is easy to damage the crankshaft and the required torque for driving the crankshaft is very large because the slide block is arranged under the crankshaft. A large nominal force-stroke cold forging press that is not easily damaged at the crankshaft and requires a small drive crankshaft torque

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