动力伺服刀架齿廓修形及传动性能研究

发布时间：2018-02-28 14:53

本文关键词： 齿廓修形静态传递误差接触应力保角映射法有限元法　出处：《东北大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着国家经济的快速发展,在汽车、船舶、航空、发电等重要领域对车削加工中心及车铣复合加工中心的需求正在飞速增长,而数控刀架是数控机床上的重要功能部件,它的性能直接影响数控机床的加工精度和加工效率。对于高速、高精度动力伺服刀架来说,对其传动系统进行研究,获得提高刀架转位定位精度和降低传动振动噪声的有效方法,具有重要理论研究意义和实际应用价值。本文结合“高档数控机床与基础制造装备”科技重大专项课题“动力伺服刀架的动态可靠性与可靠性灵敏度设计及试验技术”,以沈阳机床集团生产的一款动力伺服刀架为研究对象,主要研究动力伺服刀架的齿轮传动的传动性能,在此分析基础上寻找修形方案,从而改善齿轮传动性能和提高齿轮承载能力。主要的研究内容如下： (1)运用弹性力学方法,求解单齿对啮合时,在啮合线上不同位置上的轮齿变形及齿对综合变形,并在此基础上,根据齿轮啮合理论,得到齿轮实际啮合过程中的啮合刚度和齿间载荷分配。 (2)运用APDL参数化语言,在ANSYS中建立齿轮对的精确有限元模型,进而进行齿轮啮合过程中接触静力分析,通过分析结果得到齿轮啮合过程中的齿对综合变形、齿间载荷分配、接触应力变化和静态传递误差的变化,一方面与弹性力学方法计算结果对比,验证有限元法的正确性,另一方面分析出齿轮啮合过程中,传动性能需要改善的地方。 (3)进行不同修形曲线和不同修形量的修形,对比修形后对齿轮的传动性能的影响,确定最佳的修形方案,说明齿廓修形对齿轮的传动性能和强度的改善情况。
[Abstract]:With the rapid development of national economy, the demand for turning center and turn-milling complex machining center is increasing rapidly in the important fields of automobile, ship, aviation, power generation and so on, and NC tool holder is an important functional part in NC machine tool. Its performance directly affects the machining accuracy and machining efficiency of NC machine tools. For high-speed and high-precision power servo tool holder, the transmission system is studied. It is of great theoretical significance and practical value to obtain an effective method to improve the positioning accuracy of the tool holder and to reduce the vibration and noise of the transmission. In this paper, the dynamic reliability and reliability sensitivity design and test technology of dynamic servo tool holder are combined with "High-grade NC machine tool and basic manufacturing equipment", which is a special subject of science and technology. The dynamic reliability and reliability sensitivity design and test technology of power servo tool holder are used in this paper. Servo tool holder is the object of study. This paper mainly studies the transmission performance of the gear transmission of the power servo tool holder, and on the basis of this analysis, looks for a modification scheme to improve the transmission performance of the gear and the bearing capacity of the gear. The main research contents are as follows:. 1) using elastic mechanics method to solve the deformation of gear tooth and gear pair in different position on meshing line, and on the basis of the theory of gear meshing, the deformation of gear tooth in different position on the meshing line is solved, and based on the theory of gear meshing, the deformation of gear tooth in different position on the meshing line is solved. The meshing stiffness and load distribution between gears in the actual meshing process are obtained. 2) using APDL parameterized language, the accurate finite element model of gear pair is established in ANSYS, and then the contact static analysis during gear meshing is carried out. Through the analysis results, the comprehensive deformation of gear pair and load distribution between teeth are obtained. The change of contact stress and static transfer error, on the one hand, is compared with the results of elastic mechanics method to verify the correctness of finite element method. On the other hand, the transmission performance needs to be improved in the course of gear meshing. In this paper, the effect of profile modification on the transmission performance of gear is compared, and the optimum modification scheme is determined. The improvement of gear transmission performance and strength by tooth profile modification is explained.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

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