Research on Damping and Vibration Characteristic of the Large and Precision NC Rotary Table

Chun Jian Yu; Xiao Diao Huang; Cheng Gang Fang; Ke Fang Dai

doi:10.4028/www.scientific.net/AMR.97-101.1216

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 97-101Research on Damping and Vibration Characteristic...

Research on Damping and Vibration Characteristic of the Large and Precision NC Rotary Table

Abstract:

According to the current situation of acicular chip and high-frequency chattering of the NC rotary table while gear milling, rigidity and damping performances of the table were analyzed and the damping program of Coulomb friction was bring up. Online test of the gear milling cutting force can be used to establish dynamic model of circumferential vibration of the table with Coulomb friction. Then mechanism of restraining gear cutting chatter by damping of Coulomb friction and acicular chip generating mechanism were exposed. Furthermore, relationship between backlash and rotary rigidity of the table was also analyzed. A kind of floating apparatus with friction damping was designed to optimize circumferential damping of the table by adjusting Coulomb friction force, which reduces the influence of high-frequency chattering on gear milling. As a result, efficiency of gear milling was increased 1.5 times and the noise was reduced from 105dB to 91dB.

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Periodical:

Advanced Materials Research (Volumes 97-101)

Pages:

1216-1222

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.1216

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Online since:

March 2010

Authors:

Chun Jian Yu, Xiao Diao Huang, Cheng Gang Fang, Ke Fang Dai

Keywords:

Acicular Chip, Damping of Coulomb Friction, NC Rotary Table, Vibration of Gear Milling

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