Technical gazette, Vol. 29 No. 2, 2022.
Original scientific paper
https://doi.org/10.17559/TV-20200329082227
Dynamical Analysis of Carrier-Track Contact Model in a Braiding Machine
Yujing Zhang
; College of Mechanical Engineering, Donghua University, Shanghai, China
Zhuo Meng*
; College of Mechanical Engineering, Donghua University, No. 2999, North Renming Road, Songjiang District, Shanghai, China
Chengjie Du
; College of Mechanical Engineering, Donghua University, Shanghai, China
Yize Sun
; College of Mechanical Engineering, Donghua University, Shanghai, China
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
Hrčak ID:
272604
URI
Publication date:
15.4.2022.
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