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Reliability analysis of machine tool spindle-bearing system using XLrotor

机译：机床的可靠性分析使用XLrotor轴轴承系统

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In rotordynamic analysis, a simulation tool is required for design and optimization of a rotor system. The forces generated are high when the rotary system is operated at high speeds and probability of failure is also high with minor imbalance. The imbalance in rotating machines is major concern that varies with time causing misalignment, looseness, bent shaft, and bearing failures. The amplitude at critical speeds is high due to imbalance in rotor that exceeds vibration levels beyond acceptable limits of ISO 10816-1 vibration severity criteria, resulting in failure. The critical speeds can be shifted for low-speed rotor with change in mass and stiffness effectively, but for high speed rotor, the critical speeds are bypassed with reduced amplitude of vibration by changing the bearing stiffness and damping properties. An attempt is made on reliability analysis of machine tool spindle with bearings (rotor model with bearings) system using computational tool XLrotor. The amplitude of vibration of spindle machine tool is controlled which results reduce in failures and increase in reliability. The results are determined through XLrotor due to its ease of use and less time for customization of rotor models which shows good agreement with FEM results. In this paper, the rotor is operated from 2000 cpm to 28,000 cpm, and the undamped critical speeds, Campbell diagram, vibration levels at imbalance, and load on bearings at peak amplitude are determined.
机译：rotordynamic分析、仿真工具所需的转子的设计和优化系统。在高速度和旋转系统操作与小失效概率也很高不平衡。主要关注随时间导致失调,松动、弯曲的轴和轴承失败。由于转子的不平衡超过高ISO的振动水平超出可接受范围10816 - 1振动严重程度标准,导致失败。低速转子质量和刚度的变化有效,但对高速转子,临界速度与降低绕过通过改变轴承振动振幅刚度和阻尼特性。在机床的可靠性分析轴与轴承与轴承(转子模型)XLrotor系统使用的计算工具。机床主轴的振动幅度结果减少故障和控制增加可靠性。通过XLrotor由于其易用性定制的转子模型和更少的时间与有限元结果显示良好的协议。本文从2000年cpm转子操作28000 cpm,无阻尼临界速度,坎贝尔图、振动水平不平衡,在轴承和负载峰值振幅确定。

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