行星齿轮减速器传动装置分析与研究

发布时间：2018-04-26 05:35

本文选题：行星齿轮减速器 + ANSYS静力学仿真　；参考：《长安大学》2015年硕士论文

【摘要】：行星齿轮减速器在机械传动过程中具有众多优点,因此被广泛的应用于机械行业。传统设计由于条件限制无法进行多次实体实验,因此设计周期过长、设计成本高、产品质量较低。为解决这一问题,本文主要将计算机引入设计过程中,用虚拟的实验代替传统实体实验作为研究课题。本文利用Solidworks软件建立NGW31行星齿轮减速器三维模型,选取减速器最核心的传动装置作为研究对象,对其利用Ansys软件进行有限元模型分析,五阶自由模态分析求出固有频率与振型图。给传动装置施加载荷,对输出轴和整个传动装置进行静力学计算分析,获得输出轴与传动装置的应力应变云图。将应力与应变云图与材料的屈服极限对比计算,判断传动轴与传动装置的设计强度是否可靠。对行星齿轮减速器的传动比、各轴角速度、太阳轮与行星轮间啮合力、行星轮与内齿轮间啮合力、啮合频率进行理论计算。利用Adams软件对行星齿轮减速建立虚拟样机模型,并对传动装置模型进行动力学仿真,仿真出各轴的角速度曲线图、太阳轮与行星轮间的圆周力与径向力的时域频域图、行星轮与内齿轮间的圆周力与径向力的时域频域图,将这些仿真曲线与理论计算对比分析,得出理论值与仿真值误差,根据误差判断建立虚拟样机是否可靠的,若可靠即可,否则重新修改参数再进行虚拟实验仿真。利用此种方法不断进行虚拟样机优化实验,进而得到最优系统,从而缩短了研发周期、减少了设计开发费用,提高了产品质量,具有较好的工程使用价值。本文通过对NGW31行星齿轮减速器传动装置的静力学仿真、动力学仿真,得出该行星齿轮减速器材料强度可靠、虚拟样机可靠。
[Abstract]:Planetary gear reducer has many advantages in mechanical transmission, so it is widely used in mechanical industry. The traditional design can not carry out many solid experiments because of the limitation of conditions, so the design cycle is too long, the design cost is high, and the product quality is low. In order to solve this problem, this paper mainly introduces the computer into the design process, using virtual experiment instead of traditional solid experiment as the research subject. In this paper, the three-dimensional model of NGW31 planetary gear reducer is established by using Solidworks software. The most core transmission device of the reducer is selected as the research object, and the finite element model is analyzed by using Ansys software. The natural frequencies and mode shapes are obtained by free modal analysis of the fifth order. The stress and strain cloud diagram of the output shaft and the transmission device are obtained by statics calculation and analysis of the output shaft and the whole transmission device by applying the load to the transmission device. By comparing the stress and strain cloud diagram with the yield limit of the material, the reliability of the design strength of the transmission shaft and transmission device is judged. The transmission ratio of planetary gear reducer, the angular velocity of each axis, the meshing force between solar and planetary gears, the meshing force between planetary gear and inner gear, and the meshing frequency are calculated theoretically. The virtual prototype model of planetary gear deceleration is established by using Adams software, and the dynamic simulation of the transmission device model is carried out. The angular velocity curve of each axis and the time-domain frequency domain diagram of the circumferential force and radial force between the sun wheel and the planetary wheel are simulated. The time domain frequency domain diagram of the circular force and radial force between the planetary gear and the inner gear is compared with the theoretical calculation, and the error between the theoretical value and the simulation value is obtained. According to the error, the reliability of the virtual prototype can be determined, if it is reliable, Otherwise, the parameters are modified and the virtual experiment simulation is carried out. By using this method, the virtual prototype optimization experiment is carried out continuously, and the optimal system is obtained, thus shortening the research and development cycle, reducing the design and development cost, improving the product quality, and having good engineering application value. Based on the static and dynamic simulation of NGW31 planetary gear reducer, it is concluded that the material strength of the planetary gear reducer is reliable and the virtual prototype is reliable.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH132.46

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