夹紧误差对液压锁紧轴套锁紧扭矩的影响

发布时间：2018-06-27 11:00

本文选题：进给轴 + 液压锁紧轴套　；参考：《机械设计与制造》2017年12期

【摘要】：液压锁紧轴套是五轴联动机床的关键部件,能够在压力载荷作用下发生较大的弹性变形,锁紧进给轴的转动自由度,对机床定位锁紧和加工精度有重要的影响,锁紧扭矩是液压锁紧轴套设计的重要参数。为研究轴套内工作表面在加工过程中产生的夹紧误差对液压锁紧轴套锁紧进给轴时产生的锁紧扭矩的影响,首先用有限元方法分别计算了液压锁紧轴套考虑夹紧误差和不考虑夹紧误差工作时产生的锁紧扭矩;然后在自主设计的实验台上进行锁紧扭矩测试实验;最后用实验数据对有限元方法计算数据进行验证。验证结果说明,有限元方法计算得到的理论数据相对实验数据曲线走势一致,由夹紧误差引起轴套内工作表面的不同形状直接影响锁紧扭矩。
[Abstract]:The hydraulic locking shaft sleeve is the key component of the five-axis linkage machine tool. It can produce large elastic deformation under the pressure load, and the rotational degree of freedom of the locking feed shaft has an important influence on the positioning locking and machining accuracy of the machine tool. Locking torque is an important parameter in the design of hydraulic lock sleeve. In order to study the influence of clamping error caused by the working surface of the inner working surface of the shaft sleeve on the locking torque of the hydraulic lock shaft sleeve when the feed shaft is locked, the clamping error caused by the clamping error of the inner working surface of the shaft sleeve is studied. Firstly, the locking torque produced by hydraulic locking shaft sleeve considering clamping error and not considering clamping error is calculated by using finite element method, and then the locking torque test experiment is carried out on the self-designed test bench. Finally, the finite element method is used to verify the calculation data. The results show that the theoretical data obtained by the finite element method are consistent with the experimental data, and the different shapes of the working surface of the sleeve caused by the clamping error directly affect the locking torque.
【作者单位】：沈阳工业大学机械工程学院;
【基金】：沈阳市工业科技攻关项目(F12-069-2-00)
【分类号】：TH137.5

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