Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1993-02-09
1993-08-31
Luong, Vinh T.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
23434, 74572, F16F 1510
Patent
active
052398862
ABSTRACT:
A high gain and high torsional stiffness servo axis drive system for machine tools is described as providing improved stability. This system includes a servo motor mounted on a base and connected to a C-Axis spindle drive arrangement via a toothed drive belt. A first damping means is attached to the spindle drive pulley and tuned for damping torsional oscillations of the servo output shaft, belt, and spindle when the system is not fitted with a workpiece. An independent second damper is attached to the driving pulley of the servo motor and tuned for damping torsional oscillations of the entire servo drive system when the system is loaded with a workpiece. The resulting servo axis drive system features improved stiffness and can be adapted to a variety of predetermined loading conditions by convenient retuning of the second damper. At least the second damper is provided as a combination of a damper mass ring attached to the servo motor pulley by a plurality of visoelastic damping elements. It is contemplated that the damping elements can be easily substituted to retune the system for different loading conditions.
REFERENCES:
patent: 2346732 (1944-04-01), Crawford et al.
patent: 2346972 (1944-04-01), Kishline
patent: 2585382 (1952-02-01), Guernsey
patent: 2714823 (1955-08-01), Dall et al.
patent: 3486585 (1969-12-01), Richter et al.
patent: 3522864 (1970-08-01), Richter
patent: 3545301 (1970-12-01), Richter
patent: 3749372 (1973-07-01), Funk
patent: 4036030 (1977-07-01), Papst
patent: 4171147 (1979-10-01), Swisher, Jr. et al.
patent: 4311120 (1982-01-01), Freyn et al.
patent: 4377992 (1983-03-01), Zeilinger et al.
patent: 4516955 (1985-05-01), Worner et al.
patent: 4598671 (1986-07-01), Gluck et al.
patent: 4617714 (1986-10-01), Kori et al.
patent: 4664624 (1987-05-01), Dufresne
patent: 4722308 (1988-02-01), Wall
patent: 4796728 (1989-01-01), Kanengieter et al.
patent: 4815332 (1989-03-01), Serizawa et al.
patent: 4848183 (1989-07-01), Ferguson
patent: 4884666 (1989-12-01), Stahl
patent: 4924727 (1990-05-01), Pearl et al.
patent: 4955330 (1990-09-01), Fabi et al.
patent: 5058267 (1991-10-01), Andra et al.
patent: 5140868 (1992-08-01), Mizuno et al.
patent: 5146804 (1992-09-01), Carmillet
Shock and Vibration Handbook, Edited by Harris and Crede, Second Edition, McGraw-Hill Book Company, 1976, various pages.
"Eliminating Istabilities in Motion Control Systems Caused by Torsional Resonance", by Gregory J. Schneider, Motion Fourth Quarter, 1985, pp. 4-8.
"Taming Resonance in Servos", by Gregory J. Schneider., Machine Design, Feb. 7, 1985, pp. 73-76.
Cincinnati Milacron Inc.
Luong Vinh T.
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