Dynamic Simulation and Analysis of the Synchronous Mechanism of High-Speed Machine Tool Protective Cover with Joint Clearance

DEStech Transactions on Materials Science and Engineering Pub Date : 2021-04-07 DOI:10.12783/DTMSE/AMEME2020/35522

Tian Xia, Zhao Yihao, Mu Qi, Guo Jianbin, Yao Zhan

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Abstract

The synchronous mechanism is the driving part of the machine tool guide rail protection device, which makes the relative speed of each cover sheet the same, which can well reduce the vibration and noise generated by the machine tool protection device. In high-speed operation, because the gap in the hinge pair of the synchronous mechanism has a great influence on its movement accuracy, this paper establishes a multibody dynamics model of the synchronous mechanism of the high-speed machine tool guide rail guard based on the Hertz theory, and uses ADAMS to The dynamic simulation analysis of the synchronous mechanism of the clearance shows that the pin near the joint between the worktable and the cover has the greatest influence on the motion accuracy of the synchronous mechanism. At the same time, the speed of the pin is analysed under different clearances. The transformation law of acceleration, contact and collision force of the kinematic pair with clearance and its influence on the performance of high-speed machine tool guards.

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带关节间隙的高速机床防护罩同步机构动力学仿真与分析

同步机构是机床导轨保护装置的驱动部分，使各盖板的相对速度相同，可以很好地降低机床保护装置产生的振动和噪音。高速运行时，由于同步机构铰链副间隙对其运动精度影响较大，本文基于赫兹理论建立了高速机床导轨护套同步机构的多体动力学模型。并利用ADAMS对同步机构的间隙进行了动力学仿真分析，结果表明，工作台与盖板连接处附近的销对同步机构的运动精度影响最大。同时，对不同间隙下销的速度进行了分析。研究了运动副的加速度、接触力和碰撞力随间隙的变化规律及其对高速机床护套性能的影响。

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DEStech Transactions on Materials Science and Engineering

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