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Yu Junyi
Zhang Yongliang
Wang Maohua
Zhou Xiaoqin
Faculty of Mechanical Science
and Engineering,
Jilin University,
Changchun 130025, China |
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STUDY ON ELECTRORHEOLOGICAL FLUID DAMPER FOR APPLICATION
IN
MACHINING CHATTER CONTROL*
Abstract:
The electrorheological fluid(ERF)is a kind of intelligent
material with bright prospects for industry applications, which
has viscoelastic characteristic under the applied electric
field. The dynamic model of a milling system with an ERF damper
is established, and the chatter suppression mechanism of the ER
effect is discussed theoretically. Both the theoretical study
and the experimental investigation show that the additional
damping and additional stiffness produced by the ERF increase
with the rise in the strength of electric field E, but
their influence on the cutting stability is different. Only when
both additional damping and additional stiffness cooperate, the
milling chatter can be suppressed quickly and effectively. In
additional, an ERF damper used on the arbor of horizontal
spindle milling machine is developed, and a series of milling
chatter control experiments are performed. The experimental
results show that the milling chatter can be suppressed
effectively by using the ER damper.
Key words:
Machining chatter ERF damper Additional damping Additional
stiffness
Chatter control |