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球面内套双沟道一次磨削加工技术对保证对称球面加工精度、提高粗糙度水平和磨削效率均为有利，是提高球面轴承等机械产品加工质量和生产效率的先进技术手段［１］。本文介绍应用 ＮＬＵＲＢＳ技术实现在对砂轮修整中的数字插补控制方法。
Spherical sleeve double channel once grinding process to ensure that the symmetry spherical machining accuracy, improve the level of roughness and grinding efficiency are favorable, is to improve the spherical bearing and other mechanical products processing quality and efficiency of advanced technology means [1]. This article describes the use of NLURBS technology to achieve in the wheel dressing digital interpolation control method.