一、什么是蜗轮蜗杆传动?蜗轮蜗杆传动, 是在齿轮传动基础上演化出来的一种传动比很大而结构较小的传动形式。如果在一对轴线互相垂直的螺旋齿轮中,小轮半径很小,而螺旋角β_1很大,它的轮齿就在分度圆柱面上绕成完整的螺旋线;同时大轮半径又很大,而螺旋角β_2很小,则大轮仍和普通螺旋齿轮一样,具有部分的螺旋齿线。 First, what is the worm gear transmission? Worm gear transmission, is based on the gear drive evolved out of a large transmission ratio and smaller form of transmission. If a pair of helical gears whose axes are perpendicular to each other have a small radius and a large helix angle β_1, the gear teeth of the small helix turn into a complete helix on the indexing cylindrical surface; meanwhile, the radius of the large wheel is very large , While the helix angle β_2 is very small, the big wheel still has the same helical tooth line as the ordinary helical gear.