Self-alignment roll system of cross wedge rolling mill

Abstract

The invention discloses a self-alignment roll system of a cross wedge rolling mill, comprising a stand, an upper bearing seat, a roll and bearing seats arranged on both ends of the roll, wherein the upper ends of the bearing seats are fixedly provided with prestressing supports on which regulating rods are screwed. The self-alignment roll system of the cross wedge rolling mill is characterized inthat a lower self-alignment regulating device is arranged between the lower ends of the bearing seats and the stand, an upper self-alignment regulating device is arranged between the regulating rods and the upper bearing seat, wherein an axial self-alignment regulating device is arranged between the side surface of the bearing seat positioned on the operation side and the stand. The invention hasthe advantages that because the self-alignment regulating devices are arranged on the roll system, the roll system has the function of self-alignment regulation so as to ensure that the roll system has uniform bearing load when working and ensure the designing service life of bearings, the rolled pieces rolled by the roll system have uniform internal tissues, and the rolling precision and the product quality are improved, and the scale production of cross wedge rolling of long-shaft parts is realized.

Description

technical field [0001] The invention relates to a plastic forming equipment for shaft parts, in particular to a self-positioning roll system of a cross wedge rolling mill. Background technique [0002] Cross wedge rolling is a new forming process of shaft parts, which has the advantages of high efficiency and material saving, and has been widely used at home and abroad. With the continuous development of cross wedge rolling technology, the range of rolled products is also increasing. For example, the cross wedge rolling and multi-wedge synchronous technology can be used to roll automobile half shafts and railway vehicle axles. However, due to the long roll body required for rolling long shaft parts such as automobile half shafts, the elastic deformation of the roll system during the rolling process is relatively large, resulting in unbalanced loads on the bearings of the roll system, and the bearing life is much lower than the design life. It will also lead to uneven stress...

AI Technical Summary

Problems solved by technology

However, due to the long roll body required for rolling long shaft parts such as automobile half shafts, the elastic deformation of the roll system during the rolling process is relatively large, resulting in unbalanced loads on the bearings of the roll system, and the bearing life is much lower than the design life. It will also lead to uneven stress on the rolled piece during the rolling process, resulting in uneven internal structure and deformation of the rolled piece, resulting in defects such as looseness of the rolled piece

Therefore, the current cross wedge rolling mills at home and abroad are difficult to meet the large-scale production of cross wedge rolling for long shaft parts.

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