Inner-hole machining method for wear-resistant pressure-resistant sealing parts for high-speed rail bearings

Abstract

The invention discloses an inner-hole machining method for wear-resistant pressure-resistant sealing parts for high-speed rail bearings. The inner-hole machining method comprises the steps of inner-hole coarse grinding and inner-hole fine grinding, and electromagnetic centerless grinding machine machining is adopted by the inner-hole coarse grinding step and the inner-hole fine grinding step; and the allowance after the inner-hole coarse grinding step ranges from 0.04 mm to 0.05 mm, the rotating speed of workpieces in the inner-hole coarse grinding step and the inner-hole fine grinding step ranges from 350 rpm to 355 rpm, and the deviation angle between the guide wheel axis and a grinding wheel bearing ranges from 8 degrees to 12 degrees. In this way, according to the inner-hole machining method for the wear-resistant pressure-resistant sealing parts for the high-speed rail bearings, the surface machining quality of inner holes of the wear-resistant pressure-resistant sealing parts for the high-speed rail bearings can be improved, the fatigue strength can be significantly improved, reliability can be improved, and the service life can be prolonged.

Description

technical field [0001] The invention relates to the field of bearings, in particular to an inner hole processing method of a wear-resistant and pressure-resistant seal for high-speed rail bearings. Background technique [0002] With the rapid development of the economy, automobiles, construction machinery, etc. are widely used, and my country has become a big manufacturing country in the world, but the overall technology is relatively backward, especially in the transmission system, there are oil seal leakage, bearing damage, gear teeth or noise. And other issues. Wang Quan, Secretary-General of China Bearing Industry Association, said: During the 12th Five-Year Plan period, the key words of the domestic bearing industry will focus on independent innovation and research on core technologies to achieve industrial upgrading and replace imports. At present, 100% of the bearings used in China's motor vehicles with a speed of more than 160 kilometers per hour are imported, and Ch...

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Problems solved by technology

Domestic high-speed railway moving wheel dynamic bearing sealing components have generally used foreign brand products, and are highly dependent on foreign products. However, foreign products generally have many disadvantages such as expensive prices, long delivery times, slow service, and inconvenient maintenance. The sustainable development of my country's high-speed rail locomotives