Linkage three-roller skew rolling mill

Abstract

The invention relates to the field of rolling equipment, in particular to a linkage three-roller skew rolling mill. The linkage three-roller skew rolling mill comprises a synchronous rotating device and a radial feeding device; the synchronous rotating device comprises a motor, a synchronous gear and three rolling components; in the rolling components, first transmission shafts, second telescopictransmission shafts and third transmission shafts are connected through universal joints in sequence; skew rollers are connected with the first transmission shafts; the radial feeding device comprisesfixing base, a forked frame, a hydraulic press and three slide bars, and each first transmission shaft is rotatably arranged at one end of the corresponding slide bar; the slide bars are slidably arranged on the fixing base, and the lower ends of the slide bars are provided with rollers; the forked frame is provided with rolling grooves; the upper ends of support arms are each provided with a reversing lever, and the middle part of each reversing lever is hinged with the fixing base; and the reversing levers are connected with the support arms rotatably, and the two reversing levers are connected rotatably. According to the linkage three-roller skew rolling mill, through control over synchronous rotation and radial feeding of the skew rollers, a long shaft can be machined, and a multi-stage stepped shaft can be further machined.

Description

technical field [0001] The invention relates to the field of rolling equipment, in particular to a linkage type three-roll skew rolling mill. 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 equipment and mold...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a linkage type three-roll cross-rolling mill to overcome the inability of common three-roll cross-rolling equipment in the prior art to process long shafts, especially multi-stage stepped shafts. Feed in the opposite direction, so that long shafts can be processed, and multi-stage stepped shafts can also be processed

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