Forming equipment of medium-thick-wall integral automobile drive axle shell axle arch

Abstract

The invention discloses a forming equipment of a medium-thick-wall integral automobile drive axle shell axle arch. The forming equipment comprises a wedge pre-expanding forming mechanism, a core moldexpanding forming mechanism, a semi-closed heating furnace, an industrial robot mechanism and a transportation mechanism, the core mold expanding forming mechanism is positioned on the left side of the wedge pre-expanding forming mechanism, the core mold expanding forming mechanism is connected with the wedge pre-expanding forming mechanism through a connecting seat, the side, close to the wedge pre-expanding forming mechanism, of the core mold expanding forming mechanism is provided with the semi-closed heating furnace through a semi-closed heating furnace support, the side, close to the wedge pre-expanding forming mechanism, of the semi-closed heating furnace is provided with the industrial robot mechanism, and the transportation mechanism is arranged on the other side of the core mold expanding and forming mechanism and the other side of the wedge pre-expanding forming mechanism. The forming equipment can obviously improve the stress state of the expanding region, so that the bending transition position of the medium-thick-wall axle shell axle arch and the straight arm is better formed, and the shape and size precision of the axle arch is greatly improved.

Description

technical field [0001] The invention relates to a forming device for a medium-thick-walled integral automobile drive axle housing bridge arch. More specifically, it involves taking the medium-thick wall seamless steel pipe as the base material after completing the shaft head and push square forming at both ends and cutting the prefabricated holes, after two passes of wedge pre-expansion, radial composite mechanical expansion and shaft expansion. It is a forming equipment for the processing of medium-thick-walled integral automobile drive axle housing and bridge arch through processes such as shaping. The invention belongs to the technical field of basically non-cutting processing and forming of metal pipes. Background technique [0002] The drive axle system is one of the most important parts of the vehicle, together with the engine and the cab, it is called the three major assemblies of the car. The drive axle is at the end of the car transmission system, used to change t...

AI Technical Summary

Problems solved by technology

Taking the well-known 1141 series automobile drive axle housing as an example, the shape of the product bridge arch is designed to be nearly circular, and the two sides of the bridge arch have large arc transition bends, but the existing or proposed steel pipe expansion methods are not suitable for forming large arcs. The curved surface contour is more difficult, forcing this series of axle housings to still be manufactured by steel plate stamping and welding process. In order to ensure sufficient rigidity and strength, the wall thickness has to be increased, resulting in a significant increase in weight, which is inconsistent with the trend of lightweight vehicles

The new integral driving axle housing has high requirements on shape and dimension accuracy. However, due to the difficulty in processing large-arc curved surface contours, there is currently no forming equipment capable of completing large-arc curved surface contour arches at home and abroad, which restricts the integral drive of heavy vehicles. Development of the axle housing

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