Method for milling step-shaped roller ring blank element by using numerical control ring milling machine

Abstract

The invention discloses a method for milling a step-shaped roller ring blank element by using a numerical control ring milling machine. The method comprises the following steps that materials are prepared according to the designed dimension; hammering upsetting is carried out, a primary blank is manufactured through punching; the primary blank is installed, a milling ring device of the numerical control ring milling machine is debugged, the milling ring device comprises a main roller, a core roller and an auxiliary roller, the rolling surface of the main roller is of a step structure matched with the step shape of the step-shaped roller ring blank element, the core roller is arranged in a center through hole of the primary blank in a penetrating way with a gap, and the auxiliary roller is positioned at the other end, relative to the main roller, of the primary blank, and comprises two cone rollers arranged at the upper end surface and the lower end surface of the primary blank; a numerical control program of the numerical control ring milling machine is started for milling and forming. The method has the advantages that the main roller of the step-shaped structure is used as a major component, the core roller and the main roller simultaneously act for milling the blank element, meanwhile, the symmetrical cone rollers are used for the auxiliary roller position limitation, the blank element of the step-shaped roller ring can be stably processed and formed, the working allowance of the blank element can be reduced, and the utilization rate of raw materials is improved.

Description

technical field [0001] The invention relates to a forging method of a roll ring, in particular to a method for rolling a stepped roll ring blank by a numerically controlled ring rolling machine. Background technique [0002] For the production of roller ring forgings, the current production process is to use radial and axial CNC ring rolling machines to roll blanks, and then machine them into shapes. Compared with the traditional free forging hole expansion process, the CNC ring rolling machine greatly reduces the machining allowance of forgings. However, the forming ring rolling device of the CNC ring rolling machine is a straight roll with a straight core roll, and the rolled blank has a circular ring straight barrel structure. The finished shape of roller ring forgings is mostly stepped. In order to ensure that the roller ring blanks meet the machining requirements, it is necessary to process a large surplus block and allowance. Reference attached figure 1 The finished...

AI Technical Summary

Problems solved by technology

Using the traditional ring forming device to make blanks, the utilization rate of raw materials is low, and the waste of raw materials is serious; the rough processing process is long, the production cycle is long, and the overall cost is high.

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