Machining, Measurement, and Control Laboratory

Enhancement of Feed Drive Dynamics of NC Machine Tools by Actively Controlled Sliding Guideway
A. Matsubara (Kyoto University)
K. Lee (Kyoto University)
S. Ibaraki (Kyoto University)
Y. Kakino (Kyoto University)

In this paper, we propose a simple sliding guideway with a hydraulically operated brake unit, which can control sliding friction force on a feed drive system. The sliding friction force is controlled by the brake force command generated from velocity information of a table and/or a servomotor. Several damping control laws are implemented in the brake force control unit. Structural vibration of ballscrew drives can be successfully controlled by this actively controlled sliding guideway in experiments.

Key words: Feed Drive, Hydraulic Brake, Damping Control, Servo System.