NGW行星减速器的设计论文
NGW行星减速器的设计摘 要本文完成了对一级行星齿轮减速器的结构设计。该减速器具有较小的传动比，而且，它具有结构紧凑、传动效率高、外廓尺寸小和重量轻、承载能力大、运动平稳、抗冲击和震动的能力较强、噪声低的特点，适用于化工、轻工业以及机器人等领域。这些功用对于现代机械传动的发展有着较重要的意义。行星齿轮传动在我国已有了许多年的发展史，很早就有了应用。然而，自20世纪60年代以来，我国才开始对行星齿轮传动进行了较深入、系统的研究和试制工作。无论是在设计理论方面，还是在试制和应用实践方面，均取得了较大的成就,并获得了许多的研究成果。近20多年来，尤其是我国改革开放以来，随着我国科学技术水平的进步和发展，我国已从世界上许多工业发达国家引进了大量先进的机械设备和技术，经过我国机械科技人员不断积极的吸收和消化，与时俱进，开拓创新地努力奋进，使我国的行星传动技术有了迅速的发展。齿轮传动原理就是在一对互相啮合的齿轮中，有一个齿轮作为主动轮，动力从它那里输入，另一个齿轮作为从动轮，动力从它输出。也有的齿轮仅作为中转站，一边与主动轮啮合，另一边与从动轮啮合，动力从它那里通过，这种齿轮叫惰轮。 在包含行星齿轮的齿轮系统中，情形就不同了。由于存在行星架，也就是说，可以有三条转动轴允许动力输入/输出，还可以用离合器或制动器之类的手段，在需要的时候限制其中一条轴的转动，剩下两条轴进行传动，这样一来，互相啮合的齿轮之间的关系就可以有多种组合。确定选用2Z-X(A)型的行星传动较为合理。我们简要介绍了课题的背景以及齿轮减速器的研究现状和发展趋势，然后比较了各种传动结构，从而确定了传动的基本类型。论文主体部分是对传动机构主要构件包括太阳轮、行星轮、内齿圈及行星架的设计计算，通过所给的输入功率、传动比、输入转速以及工况系数确定齿轮减速器的大致结构之后，对其进行了整体结构的设计计算和主要零部件的强度校核计算。其中该减速器的设计与其他减速器的结构设计相比有三大特点：其一，为了使三个行星轮的载荷均匀分配，采用了齿式浮动机构，即太阳轮与高速轴通过齿式联轴器将二者连接在一起，从而实现了太阳轮的浮动；其二，该减速器的箱体采用的是法兰式箱体，上下箱体分别铸造而成；其三，内齿圈与箱体采用分离式，通过螺栓和圆锥销将其与上下箱体固定在一起。最后对整个设计过程进行了总结，基本上完成了对该减速器的整体结构设计。关键词： 行星齿轮; 传动机构; 结构设计; 校核计算 AbstractThis completed a single-stage planetary gear reducer design. The gear has a smaller transmission ratio,and it has a compact，high transmission efficiency outline,small size and light weight,carrying capacity,smooth motion,shock and vibration resistant and low noise characteristics,Used in chemical,light industry and robotics fields.The function of the development of modern mechanical transmission has a more important significance.Planetary gear transmission has many years of development in our country, and it has been used in many years. However,since 1960s,our country began to carry on the more thorough and systematic research and trial manufacture of planetary gear transmission.Both in the design theory or in the trial production and application practice,have made great achievements,and obtained a lot of research results.In the past 20 years especially since the reform and opening-up of our country,with the progress and development of the scientific and technological level of the country, China has from many of the world's industrial developed countries introduced a large number of advanced machinery and equipment and technology,after our country mechanical science and technology personnel constantly active absorption and elimination, advancing with the times. pioneering and innovative efforts to forge ahead, planetary transmission technology of our country has developed rapidly.The principle of gear transmission is in a pair of meshing gears, a gear as the driving gear,power is inputted from there it, another gear as the wheel,the power output from it.Also some gears only as transfer station, and one side of the driving gear, the other side and from the meshing of wheel,power from where it through, the gear called idler. In gear system includes a planetary gear, the situation is different. Due to the presence of planet carrier.That is to say,can have three rotating shafts allow dynamic input / output,by means of the clutch or brake and the like,need time which limits an axis of rotation, the remaining two axes drive,as a result,between the gear meshing relationship to each other can have a variety of combinations.To determine the choice of 2Z-X (A) type of planetary transmission is more reasonable.First paper introduces the background and the subject of gear reducer situation and development trend,and then compared various transmission structures,which determine the basic type of transmission.Thesis is the main part of the main components of drive mechanism including the sun wheel，planet gear,ring gear and planet carrier in the design calculation，given by the input power，gear ratio,input speed and the condition factor to determine the approximate structure after the gear reducer And to carry out the design and calculation of the overall structure and main components of the strength check calculation.One of the other gear reducer design and compared the structural design of the three major characteristics: First,the three planetary gear to make the load evenly,using a gear-type floating body,the sun gear and high-speed shaft through the gear together Coupling the two together to achieve a floating sun gear;Second,the box uses a reducer flange box,upper and lower box were cast;Third，the ring gear and Box with separate,through bolts and tapered pins will be fixed together with the upper and lower box. Finally,a summary of the entire design process is basically complete the overall design of the reducer.Key words: planetary gear;driving machanism; structural design; checking calculation 目录 前言1第一章 传动方案的确定1 1.1 设计任务1 1.2行星机构的类型选择 1 1.3 确定行星齿轮传动类型 3第二章 齿轮的设计计算 5 2.1 配齿计算 5 2.1.1 确定各齿轮的齿数 5 2.1.2 初算中心距和模数 6 2.2 几何尺寸计算 7 2.3 装配条件验算10 2.3.1 邻接条件10 2.3.2 同心条件10 2.3.2 安装条件10 2.4 齿轮强度校核12 2.4.1 a-c传动强度校核12 2.4.1 c-b传动强度校核16第三章 轴的设计计算
