NGW型行星齿轮传动系统的优化设计.doc

分类号密级毕业设计( 论文) NGW 型行星齿轮传动及优化设计所在学院机械与电气工程学院专业机械设计制造及其自动化班级姓名学号指导老师年月日诚信承诺我谨在此承诺: 本人所写的毕业论文《 NGW 型行星齿轮传动系统的优化设计》均系本人独立完成,没有抄袭行为,凡涉及其他作者的观点和材料,均作了注释,若有不实,后果由本人承担。承诺人(签名): 年月日摘要渐开线行星齿轮减速器是一种至少有一个齿轮绕着位置固定的几何轴线作圆周运动的齿轮传动,这种传动通常用内啮合且多采用几个行星轮同时传递载荷,以使功率分流。渐开线行星齿轮传动具有以下优点:传动比范围大、结构紧凑、体积和质量小、效率普遍较高、噪音低以及运转平稳等,因此被广泛应用于起重、冶金、工程机械、运输、航空、机床、电工机械以及国防工业等部门作为减速、变速或增速齿轮传动装置 NG W型行星齿轮传动机构的传动原理:当高速轴由电动机驱动时,带动太阳轮回转, 再带动行星轮转动,由于内齿圈固定不动,便驱动行星架作输出运动,行星轮在行星架上既作自转又作公转,以此同样的结构组成二级、三级或多级传动。 NGW 型行星齿轮传动机构主要由太阳轮、行星轮、内齿圈及行星架所组成,以基本构件命名,又称为 ZK-H 型行星齿轮传动机构。本设计的基本思想是以两级外啮合接触强度相等为原则分配传动比,而构造是以高速级传动比为设计变量的目标函数,采用黄金分割法得到合理的传动比分配。然后采用离散变量的组合型法分别进行单级传动的优化设计。关键词: 渐开线齿轮,离散变量,齿轮传动,优化设计 Abstract Involute ary gear reducer isa kind of at least one gear around the axis of the geometry of the fixed position for circular motion of gear transmission, the transmission usually use internal meshing and use more several round and load, in order to make power diversion. Involute ary gear transmission has the following advantages: transmission range, compact structure, small volume and quality, and generally high efficiency, low noise and stable operation, etc, so are widely used in lifting, metallurgy, construction machinery, transportation, aviation, machine tools, electric machinery and defense industry and other sectors for slowing down, variable speed or growth gear transmission device ary gear transmission mechanism NGW modeled drive principle: when the shaft from motor driver, drive the sun turn rebirth, then drive the wheel rotation, with the inner circle teeth fixed, then drive shelf as the output motion, the round in the shelf is rotation and the revolution, to the same structure of the second and third or multi-stage transmission. NGW modeled ary gear transmission main institutions by the sun, s wheel, inner wheel gear circle and of shelf, with ponent named, also called ZK-H ary gear transmission mechanism. The basic idea of this design is based on the two levels of meshing contact strength for princi