Simulation testing of the machine tool equipped with the active feed drive

• Autorzy: Sveda J. , Valasek M. , Sika Z.
• Języki publikacji: EN

Abstrakty

EN

The vibration of a machine tool is mainly caused by the dynamic acceleration of a motion axis and by the forces that act on it. All the disturbance forces are transmitted to the machine tool frame through the drive (motor) and its regulation loop and they excite its vibrations. Thus the achievable dynamics and machining quality is negatively influenced. There are several possibilities how to suppress the excited vibrations including the recently introduced "motor on motor" technique which is based on the serial connection of two linear motors. This paper presents new simulation results performed on the simulation model of a real machine tool. The maximal achievable tuning of the regulation loop parameters of the motion axis equipped with the "motor on motor" technique was confronted with the conventional feed drive setting. The "motor on motor" feed drive properties were also tested in the virtual machining operation mode where the real measured cutting force was used. The sensitivity analysis of the reaction force and the middle mass movement of the "motor on motor" feed drive solution to the predicted cutting force introduced to the feed drive control has been investigated. The middle mass is represented by the shared part of both linear motors which absorbs the high frequency part of the reaction force by its movement.

Słowa kluczowe

EN

machine tool; feed drive; control loop simulation; cutting force; vibration suppression

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2009
• Tom: Vol. 9, No. 2
• Strony: 81--92
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Sveda J.

• Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, CTU in Prague, Karlovo nám. 13, 121 35 Praha 2

autor

Valasek M.

• Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, CTU in Prague, Karlovo nám. 13, 121 35 Praha 2

autor

Sika Z.

• Department of Mechanics, Biomechanics and Mechatronics, Faculty of Mechanical Engineering, CTU in Prague, Karlovo nám. 13, 121 35 Praha 2

Bibliografia

• 1. PREUMONT A., 1997, Vibration Control of Active Structures - An Introduction, Solid Mechanics and Its Applications,Vol. 50, Kluwer Academic Publisher, Dordrecht.
• 2. SVEDA J., SIKA Z., VALASEK M., 2008, Machine tool with undisturbed frame, Matar Praha 2008, Part 1; Drives & Control, Design, Models & Simulation. Prague, 71-76, ISBN 978-80-903421-9-4.
• 3. SVEDA J., SIKA Z., VALASEK M., 2008, New active mounting of machine tool feed drive, XXII International Congress of Theoretical and Applied Mechanics, Adelaide, Australia, University of Adelaide, ISBN 978-0- 9805142-0-9.
• 4. SVEDA J., VALASEK M., SIKA Z., 2009, Experimental Testing of Active Feed Drive, Journal of Machine Engineering - High Performance Manufacturing, 8/4, XX CIRP Conference, Karpacz, Poland, ISSN 1895-7595.
• 5. TŁUSTY J., 1985, Machine Dynamics, Handbook of High Speed Machining Technology, Edited by King, R.I., Chapman and Hall, New York.