Non-stationary effects of ring rail movement in the high-speed ring spinning process with a superconducting magnetic bearing twisting system: problem and its solution
Ładowanie...
Data
2022
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Wydawnictwo Politechniki Łódzkiej
Lodz University of Technology Press
Lodz University of Technology Press
Abstrakt
Currently, a major challenge in conventional ring spinning is to increase productivity. This is essentially
due to friction between the twisting elements. An innovative approach to the solution is the use of
frictionless twisting system based on superconducting magnetic bearing (SMB) system. However,
previous studies with the SMB system were mainly restricted to an angular spindle speed of up to 30.000
rpm because of: instabilities caused by the non-stationary process forces originating from the nonuniform
ring rail movement, complex interactions between the yarn dynamics and the bearing properties
of the SMB, aerodynamical subsonic flow regimes of the rotating yarn balloon etc. The ring-rail
movement must be taken into account especially at higher angular spindle speed, as a ring-rail cycle
occurs every few rotations of the spindle and results in fast-periodic variation of the balloon form, which
in turn leads to extreme yarn tension peaks. In this study, metrological investigations were conducted
considering the ring rail movement at different angular spindle speeds with the SMB twisting system to
understand the influence of the ring rail movement on the spinning stability, dynamic yarn path during
spinning process, balloon form etc. Moreover, a concept using servo motor driven lifting mechanism is
presented to solve the problem of non-uniform ring rail movement.
Opis
Słowa kluczowe
ring spinning, twisting system, productivity, superconducting magnetic bearing, non-stationary yarn path and ring-rail movement, przędzenie pierścienia, system skręcania, produktywność, nadprzewodzące łożysko magnetyczne, niestacjonarny tor przędzy i ruch pierścienia-szyny
Cytowanie
Hossain M., Abdkader A., Cherif Ch., Sparing M., Hühne R., Maximilian K., Beitelschmidt M., Non-stationary effects of ring rail movement in the high-speed ring spinning process with a superconducting magnetic bearing twisting system: problem and its solution. W: AUTEX 2022 : 21st World Textile Conference AUTEX 2022 - AUTEX Conference Proceedings, Lodz University of Technology Press, Lodz 2022, s. 295-300, ISBN 978-83-66741-75-1, doi: 10.34658/9788366741751.62.