Involute modified gear transmission design theory was manaded,the constraint model of modification coefficient choose of the involute planetary gear drive with small teeth difference was established. The choosing-software on modification coefficient of the involute planetary gear drive with small teeth difference was developed on AutoCAD2000.It greatly increase the efficiency and guality designing of the involute planetary gear drive with small teeth difference.
According to the geometric characteristic of profile shifted gear,it illustrates the three-dimension drawing principle of inner and external straight gear and oblique teeth involute gear model in this paper. The parameter(design) method based on Pro/Program is also discussed.
According to the analyses of initial and instantaneous displacement of each engaging point of the first kind of balanced compound gear pump, the formulas of instantaneous flow and flow pulsation of this pump with standard gear or X Gear are given, Furthermore the influence of X Gear on it’s flow characteristic is discussed.
Using Pro/Program to carry on the parameter modeling of the involute cylinder gear, this model can generate helical gear, left-spur gear, right-spur gear and shifted gear through selection in a flexible way.