A linkage type three-roll skew rolling mill

Abstract

The invention relates to the field of rolling equipment, in particular to a linkage type three-roll skew rolling mill. It includes a synchronous rotation device and a radial feed device. The synchronous rotation device includes a motor, a synchronous gear and three rolling components. In the rolling component, the first transmission shaft, the second telescopic transmission shaft, and the second telescopic transmission shaft Connected in turn through universal joints, the cross-rolled strands are connected with the first transmission shaft; the radial feed device includes a fixed base, a fork, a hydraulic press and three sliding rods, and the rotation of the first transmission shaft is set at one end of the sliding rod , the sliding rod is slidably set on the fixed base, the lower end of the sliding rod is provided with rollers, and the fork frame is provided with rolling grooves; the upper ends of the support arms are provided with reversing rods, and the middle part of the reversing rods is hinged on the fixed base , the reversing rod forms a rotational connection with the support arm, and the two reversing rods form a rotational connection. The invention controls the synchronous rotation and radial feed of the oblique rolls, so that the long axis can be processed, and the multi-stage stepped axis can also be processed.

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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