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为了探究数控机床各轴运动误差以及刀具磨损误差等多项原始误差对中心蜗杆廓面加工精度的影响规律,以多体系统误差建模理论和空间机构的共啮合原理为基础,推导了包含原始误差的中心蜗杆廓面方程。利用牛顿迭代法计算得到了中心蜗杆理论廓面与误差廓面之间的法向误差,定量分析了各项原始误差与综合误差对中心蜗杆廓面精度的影响程度。主要的研究结论有效揭示和预测了各项误差对中心蜗杆廓面法向误差的影响规律,为实现数控机床加工误差补偿与中心蜗杆的精密制造提供了理论依据。
In order to explore the influence of many original errors such as motion errors and tool wear errors of NC machine tools on machining accuracy of center worm profile, based on the theory of multi-body system error modeling and co-engagement of space agencies, Error center worm profile equation. The normal error between the theoretical profile and the error profile of the center worm was calculated by Newton iteration method, and the degree of influence of each original error and comprehensive error on the accuracy of the central worm profile was quantitatively analyzed. The main conclusions of the study effectively reveal and predict the effect of errors on the normal error of the center worm profile, which provides a theoretical basis for the machining error compensation of CNC machine tools and the precision manufacture of the center worm.