Large SRB wind power main bearing outer ring profiling rolling method

Abstract

The invention discloses a large SRB wind power main bearing outer ring profiling rolling method. The method comprises the following steps that S1, in the blank manufacturing preparing stage, a blank (2) with the assigned process size is obtained, OD is the assigned forge piece outer diameter size, ID is the assigned forge piece inner diameter size, and H is the assigned forge piece height size; and S2, the blank size is input into a horizontal grinding replacing machine, OD1 is the blank outer diameter and is equal to the sum of OD and x, x is larger than 0, ID1 is the blank inner diameter andis equal to the difference of ID and y, y is larger than 0, H1 is the blank height and is the sum of H and z, and z is larger than 0. According to the large SRB wind power main bearing outer ring profiling rolling method, due to the high conical roller pressure, material gathering on the two end faces is achieved, near-net forming rolling of a large-wall-thickness-difference SRB bearing ring canbe achieved, the work face fit degree is high, metal flow line cutting-off is reduced, enhancing of the integral product performance is facilitated, and the product fatigue life is long. Through the high conical roller pressure, material gathering on the two end faces is achieved, the production process is stable, product consistency is good, and few quality problems exist; and through the high conical roller pressure, material gathering on the two end faces is achieved, the production efficiency is high, charging is little, cost is low, the material utilization rate is high, and enhancing ofthe market occupancy is facilitated.

Description

technical field [0001] The invention relates to the technical field of manufacturing the outer ring of a wind power main bearing, in particular to a profiling rolling method for the outer ring of a large SRB wind power main bearing. Background technique [0002] In recent years, with the continuous development of the wind power market, the size of large SRB wind power main shaft bearings has become larger and larger, and the product wall thickness difference has become larger and larger. The near-net shape of the SRB outer ring has become a very challenging subject. The traditional forging production method is generally forged or rolled according to the rectangular ring. The production process is outdated, the input of raw materials is large, and the machining process is long, resulting in the cost of SRB wind power spindle bearings. The streamlines expose the internal defects of the raw materials and reduce the fatigue strength of the bearings, causing bearing failures to o...

AI Technical Summary

Problems solved by technology

The traditional forging production method is generally forged or rolled according to the rectangular ring. The production process is outdated, the input of raw materials is large, and the machining process is long, resulting in the cost of SRB wind power spindle bearings. The streamlines expose the internal defects of the raw materials and reduce the fatigue strength of the bearings, causing bearing failures to occur from time to time; some bearing forging suppliers also try to achieve a small amount of profiling of individual products by pressing the billet pre-divided, and raw material input However, more labor costs are needed to make up for the reduction. Due to the limitations of the process, the production of products requires high skills of employees, the process stability is poor, and it is difficult to achieve mass production; only partial profiling and near-profiling production can be achieved. , There are large individual differences in products, and there are quality risks; in view of the above defects, it is necessary for us to design a large-scale SRB wind power main bearing outer ring profiling rolling method

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