A hydraulic press for wheel hub forming

Abstract

The invention relates to a hydraulic machine for hub forming. The hydraulic machine for hub forming comprises a rack and a die assembly pressing mechanism. The die assembly pressing mechanism comprises a fixator and a connector. At least two sets of symmetrically-arranged elbow connecting rod mechanisms are arranged between the fixator and the connector. Each elbow connecting rod mechanism comprises a second elbow rod, a first elbow rod hinged to the fixator, and a connecting rod hinged to the connector. The die assembly pressing mechanism further comprises a swing limiting structure for guaranteeing that certain angles are formed between the first elbow rods and the connecting rods, and the first elbow rods and the connecting rods cannot be straightened. The elbow connecting rod mechanisms further comprise elbow rod limiting structures for keeping the second elbow rods at outwards-inclined initial positions before die assembly. The second elbow rods are provided with cooperation mechanisms, sliding holes are formed in the portions, located on the outer sides of the second elbow rods, of the rack, and the second elbow rods are in abutting cooperation with the sliding holes after sliding into the sliding holes and swing around the abutting positions to jack the fixator to achieve die assembly pressurization. The die assembly pressing mechanism can be separated from the sliding holes, and the hydraulic machine has large die opening space.

Description

Technical field [0001] The invention relates to a hydraulic press for forming a wheel hub. Background technique [0002] The light alloy automobile wheel parts require a lot of pressure when precision extrusion, and at the same time, a large mold opening space is required when loading and removing products. The hydraulic press has a large working pressure, and the working stroke can be freely controlled and the adjustment range is large. It is widely used in wheel forming operations. However, the configuration of the high-pressure hydraulic press is more complicated. Generally, independent pump stations, control parts and hydraulic circuits are required, and the cost is Extremely high. [0003] The Chinese invention patent application document with the application publication number CN106182861A discloses a cylinder connecting rod driving system for a compound transmission hydraulic machine, which includes a symmetrical connecting rod booster mechanism and a hydraulic cylinder. Th...

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Problems solved by technology

[0005] The object of the present invention is to provide a hydraulic press for wheel hub forming, to solve the problem that the forming equipment with toggle linkage mechanism in the prior art is affected by the toggle linkage and has a small working stroke, which cannot be used for large space situation problem

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