Three-roller skew rolling device for processing axial parts

Abstract

The invention relates to the field of rolling equipment, in particular to a three-roller skew rolling device for processing axial parts. The three-roller skew rolling device comprises a synchronous rotating device and a radial feeding device. The synchronous rotating device comprises a motor, a synchronous gear and three rolling assemblies. In the rolling assemblies, a first transmission shaft, asecond telescopic transmission shaft and a third telescopic transmission shaft are successively connected through universal joints, and a skew rolling strand is connected to the first transmission shaft; the radial feeding device comprises a fixed substrate, three slide bars and an air cylinder for pushing the slide bar to slide, the first transmission shaft is rotatably arranged on the slide bar,a back avoidance hole is for accommodating a skew rolling roller is formed in the fixed substrate, the back avoidance hole is used for accommodating the skew rolling roller, the three slide bars areauniformly distributed on the circumference of the back avoidance hole and are slidably arranged on the fixed substrate, and the slide bars slide along the radial direction of the back avoidance hole.By controlling synchronous rotation and radial feeding of the skew rolling roller, a long axle can be processed, and a multi-stage stepped shaft can be also processed.

Description

technical field [0001] The invention relates to the field of rolling equipment, in particular to a three-roll cross-rolling device for processing shafts. Background technique [0002] With the development of the railway industry, the demand for high-speed train axles is increasing day by day. People are increasingly using plastic forming processes to produce high-speed train axles, such as cross-wedge rolling and multi-wedge rolling. However, because high-speed train axles are super-large Shaft parts, a large proportion of which are hollow shafts, have a maximum diameter of nearly φ200mm and a maximum length of nearly 2200mm. In the existing common cross wedge rolling equipment, such as two-roll cross wedge rolling mills, the size of the mold must be consistent with the size of the billet. Strict matching, so to produce high-speed train shafts, the diameter of the mold must be more than φ3000mm, and the height of the rolling mill is also close to 10000mm. Such a large equipm...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a three-roll cross-rolling device for processing shafts in order to overcome the inability of common three-roll cross-rolling equipment in the prior art to process long shafts, especially multi-stage stepped shafts. Synchronized rotation and radial infeed enabling machining of long shafts, also for multi-stage stepped shafts

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