1、 I 摘摘 要要 本次课程设计是设计一个一级减速器，根据设计要求确定传动方案。设计过程根 据所给输出机的传动带的速度、传动带的力、卷筒直径。确定所选电动机的功率，再 确定电动机的转速范围，进而选出所需要的最佳电动机。计算总传动比并分配各级传 动比，计算各轴的转速、转矩和各轴的输入功率。对传动件的设计，先设计齿轮，从 高速机齿轮设计开始，根据功率要求、转速、传动比，及其其他要求，按齿轮的设计 步骤设计，最后确定齿轮的齿数，模数，螺旋角等一系列参数。本次课程设计我采用 的是直齿圆柱齿轮。之后设计齿轮的结构，按机械设计所讲的那样设计，按同样 的方法对低速级进行设计，接下来对箱体进行大体设计，设计轴的
2、过程中将完成对箱 体的总体设计，设计轴主要确定轴的各段轴径及其长度，在此设计过程中完成了对一 些附加件的设计包括对轴承的初选，主要是根据轴的轴向及周向定位要求来选定，然 后对轴进行强度校核，主要针对危险截面。这个过程包括一般强度校核和精密校核。 并对轴承进行寿命计算。 设计过程中主要依据 课程设计 ， 对一些标准件和其他的一些部件进行选择查取。 关键词关键词：减速器 齿轮 机械传动 输入轴 输出轴 II Abstract The course design is the design of a reducer, according to design requirements to deter
3、mine the transmission scheme. Design process to the output of the machine belt speed, belt force, roll diameter. Determine the power of the selected motor, and then determine the motor speed range, and then selected the best motor. Calculate the total transmission and allocation of the transmission
4、ratio at all levels, to calculate the shaft speed, torque and the axis of the input power. Design of the transmission, the first design of gear, from the high-speed gear design, power requirements, speed, transmission ratio, and their other requirements to finalize the gear teeth, modulus, and helix
5、 angle gear design step design a series of parameters. The curriculum design is a spur gear. Then design the structure of the gear, mechanical design stresses as design, by the same method on the low speed level design, then the general design on the box, complete the design axis during the overall
6、design of box design axis mainly determine the axis of the shaft diameter and its length, and some additional pieces of the design including the bearing of the primaries, according to the axial and weeks to positioning requirements selected in this design process, then the axis of the strength check, mainly for the dangerous section. This process includes the general strength checking and precision check. And bearing life calculation. The main basis for curriculum design in the design proc
