Dynamical Analysis of Carrier-Track Contact Model in a Braiding Machine

Abstract

As vibrations caused by the coupling of carriers and tracks could affect the performance of braiding machines a lot, it is necessary to establish the carrier-track contact model and investigate its dynamic characteristics. Therefore, a dynamic model of carrier-track contact model has been developed. Based on the Hertz's law and Newton's law, the dynamical equations of carriers were established. The influence of contact related parameters to the carriers' dynamic characteristics were discussed. Besides, a comparison of contact parameters with different contact models was presented. The results show that although carriers keep a low contact speed, collisions still exist during carriers transferring between tracks. To avoid/decrease collisions and shocks, some methods were proposed, e.g. controlling the angular velocity of horn gears variable, changing the contact surface to have a higher coefficient of restitution and reducing the vibration of frame and tracks, which could be helpful to the design of braiding machines.

Keywords

• braiding machine
• carrier-track
• contact model
• dynamical analysis
• track vibration