Large shaft cross wedge rolling mill

Abstract

The invention provides a large shaft cross wedge rolling mill which comprises a rack, a balancing device arranged at the top of the rack and a roller device arranged in the middle of the rack. The bottom of the rack is provided with a driving device used for driving the roller device to adjust; the roller device comprises an upper roller and a lower roller which are arranged on the rack, the position, corresponding to the upper roller, of the rack is provided with a limiting mechanism for limiting the movement of the upper roller, and the position, corresponding to the lower roller, of the rack is provided with an adjusting mechanism for adjusting the axial position of the lower roller; and the rack is provided with a guide mechanism corresponding to the position between the upper roller and the lower roller. The large shaft cross wedge rolling mill has the advantages of simple structure, easy adjustment and good universality, can adapt to rolling of products with various specifications through simple operation adjustment, and is beneficial to improving the machining efficiency of the products; and the balancing device arranged on the rack can eliminate assembly gaps of the upper roller or a bearing pedestal together with a pressing servo cylinder, thereby being beneficial to improving the working stability of the upper roller.

Description

technical field [0001] The invention belongs to the field of rolling mills, and in particular relates to a large shaft type cross wedge rolling mill. Background technique [0002] In recent years, with the development of the times, the demand for large-diameter shaft parts has been increasing day by day. As a new process that is very suitable for the production of stepped shafts and rotary parts, cross wedge rolling has also been increasingly large-scaled. In the existing large-scale shaft production, it needs to be forged into a rough billet by a fast section machine, a precision forging machine and other equipment, and then rough-machined and finished into the required stepped shaft. The utilization rate of the material is low, the energy consumption is large, and the time is long. Wait. The traditional cross wedge rolling mill can only roll large shafts with a maximum diameter of 150mm and a length of 1200mm, and a single mold can only roll a stepped shaft of one specifi...

AI Technical Summary

Problems solved by technology

In the existing large-scale shaft production, it needs to be forged into a rough billet by a fast section machine, a precision forging machine and other equipment, and then rough-machined and finished into the required stepped shaft. The utilization rate of the material is low, the energy consumption is large, and the time is long. Wait

The traditional cross wedge rolling mill can only roll large shafts with a maximum diameter of 150mm and a length of 1200mm, and a single mold can only roll a stepped shaft of one specification. Raw materials with different diameters and lengths cannot be produced in the same mold, resulting in mold failure. The investment is relatively large and the equipment adjustment time is long, which has become an important problem to be solved urgently.

Images