一.概述随着科学技术的发展,在国防、科研生产中,高精度大型测量仪器对旋转轴系精度要求愈来愈高。大型平面止推轴承环是垂直轴系关键零件之一,支撑着几吨重仪器的主体在其上作水平方向迴转,它们的精度直接影响到仪器主体的晃动,影响到仪器的测量精度。大型平面止推轴承环具有尺寸大、精度 I. Overview With the development of science and technology, in the national defense, scientific research and production, high-precision large-scale measuring instruments on the rotating shaft accuracy requirements are getting higher and higher. Large flat thrust bearing ring is one of the key parts of the vertical shaft system, supporting the main body of several tons of heavy equipment in the horizontal direction of its rotation, their accuracy directly affects the main instrument shaking, affecting the measurement accuracy of the instrument. Large flat thrust bearing ring with large size, accuracy