机械5

渐开线行星齿轮减速器设计 摘要 随着现代科学技术快速发展，现代工业的自动化水平也正在不断提高，进而对动力传递、运动适度性等方面也提出了更高要求。目前行星齿轮传动正向高速大功率及低速大转矩的方向发展。和定轴轮系相比，行星齿轮传动拥有着无法替代的优点，如体积孝重量轻、结构紧凑、传动功率大、传动比范围大、传动效率高、承载能力高、工作稳定等。 通过以下步骤对渐开线行星齿轮减速器进行研究，通过给出电机功率，输入以及输出转速的背景下，进而计算出行星齿轮减速器传动比和传动类型，根据已知传动比计算出各齿轮主要参数，根据参数确定齿轮尺寸并对其进行强度校核。之后根据公式计算出轴的最小直径并通过轴承选择来确定轴尺寸，以及进行强度校核，然后是对减速器外壳、行星架等结构进行设计，最后在选择螺母键等标准件，并选择出合适密封方式。在通过CAD绘制出该减速器装配图和零件图。 关键词：行星齿轮传动；强度校核；结构设计；优点 Abstract The axial size is fixed a
nd the stre
ngth is checked. The
n, the structure of the reducer shell a
nd pla
netary frame is desig
ned. Fi
nally, sta
ndard parts such as the
nut key are selected a
nd the proper seali
ng method is chose
n. The assembly drawi
ng a
nd part drawi
ng of the reducer are made through CAD. With the rapid developme
nt of moder
n scie
nce a
nd tech
nology, the automatio
n level of moder
n i
ndustry is also co
nti
nuously improvi
ng, a
nd higher requireme
nts have bee
n put forward for power tra
nsmissio
n a
nd fit
ness of sports. At prese
nt, pla
netary gear drive is developi
ng towards high speed a
nd high power a
nd low speed a
nd high torque. Compared with the fixed axis gear trai
n, pla
netary gear tra
nsmissio
n, with a
n irreplaceable adva
ntages, such as small volume, light weight, compact structure, large tra
nsmissio
n power, wide tra
nsmissio
n ratio, high tra
nsmissio
n efficie
ncy, high beari
ng capacity, stable operatio
n, etc. By followi
ng these steps of i
nvolute pla
netary gear reducer is studied, through the motor power is give
n, u
nder the backgrou
nd of the i
nput a
nd output rotatio
nal speed, a
nd the
n calculate the tra
nsmissio
n ratio a
nd tra
nsmissio
n type pla
netary gear reducer, the mai
n parameters accordi
ng to the k
now
n tra
nsmissio
n ratio is calculated for each gear, accordi
ng to the parameters of gear size a
nd i
nte
nsity. The mi
nimum diameter of the shaft is calculated accordi
ng to the formula a
nd determi
ned by beari
ng selectio
n Key words pla
netary gear tra
nsmissio
n; stre
ngth; structural desig
n; high level 目录 摘要I Abstract II 第1章绪论1 1.1行星齿轮减速器研究背景1 1.2行星齿轮减速器研究现状2 1.2.1行星齿轮减速器国内外发展2 1.2.2行星齿轮减速器的特点3 1.3设计的基本内容4 第2章总体方案设计5 2.1设计要求5 2.2传动方案的选择5 2.2.1行星齿轮机构的类型及特点5 2.2.2行星齿轮传动类型的确定7 第3章齿轮的设计计算8 3.1配齿计算8 3.2齿轮的主要参数的计算9 3.2.1高速级齿轮的模数m的计算9 3.2.2低速级的齿轮模数m的计算10 3.3啮合参数计算11 3.3.1高速级11 3.3.2低速级11 3.3.3高速级变位系数的计算11 3.3.4低速级变位系数的计算12 3.4齿轮几何尺寸的计算12 3.4.1高速级12 3.4.2低速级13 3.4.3插齿刀齿根圆直径的计算13 3.5装配条件的验算14 3.5.1邻接条件的检验14 3.5.2同心条件的检验14 3.5.3安装条件的检验15 3.6传动效率的计算15 3.6.1高速级啮合损失系数的确定15 3.6.2低速级啮合损失系数的确定16 3.7齿轮强度的校核计算17 3.7.1高速级外啮合齿轮副接触疲劳强度的校核17 3.7.2高速级外啮合齿轮副弯曲强度的校核18 3.7.3高速级内啮合齿轮副接触强度的校核19 3.7.4低速级外啮合齿轮副接触强度的校核20 3.7.5低速级外啮合齿轮副弯曲强度的校核21 3.7.6低速级内啮合齿轮副接触疲劳强度的校核22 第4章轴的设计计算24 4.1行星轴的设计和校核24 4.1.1初步计算轴的最小直径24 4.1.2行星轮轴轴承的选择与确定25 4.2转轴的设计26 4.2.1输入轴设计26 4.2.2输出轴设计与计算27 第5章转臂、箱体及附件的设计29 5.1减速器转臂的设计29 5.1.1转臂结构的设计29 5.1.2转臂制造精度30 5.2箱体的设计32 5.3减速器其它构件的选择34 5.3.1标准件及附件的选择34 5.3.2密封和润滑34 结论35 参考文献36 致谢37