Kinematic Analysis And Optimization Of WWB Impulse Stepless Speed Variator

WWB Impulse stepless speed variator is a universal transmission device which meets the requirements of mechanization and automatization in morden manufacturing process, and improvement of mechanical performance. It has found a good market with its reliability, high load-bearing, steady capability of variable transmission and broad adjustable-speed range, and so on. Due to its particular structure, considerable unbalanced inertial force and torque, in high-speed motion, bring about variable dynamic loads on the frame and, as a result, vibrations; therefore, it is vital to optimize the structure by synthesize, employing ADAMS, based on geometry modeling and kinematic analysis , and to improve kinematic and dynamic performance greatly. The central works in this paper proceed as follows.Firstly, the geometry model of WWB Impulse stepless speed variator is presented.Secondly, graphs of output link are obtained by means of kinematic simulation, on a sound basis of which kinematic study related to laws of average ratio of transmission and velocity fluctuation, as a kinematic characteristic, is carried out.Thirdly, kinematic study dealing with center of mass acceleration and angular acceleration of the coupler, a key part with a dramatic effect on kinematic and dynamic performance of mechanism, is conducted.Finally, optimal results, obtained by parametric design optimization in which objective, i.e. combination of center of mass acceleration and angular acceleration of the coupler, is established, and based on initialization derived from Design Study in ADAMS, show that inertial force and torque are dramatically suppressed, due to optimal objective by GRG method , as a result, great reduction of unwanted vibrations and impacts.This paper supplies references to improvement of WWB Impulse stepless speed variator performance, in addition to useful exploration of new theories about WWB Impulse stepless speed variator.