Magnetic bearing spindle device for machine tools

Details Magnetic bearing spindle device for machine tools Magnetic bearing spindle device for machine tools

1997-07-18

1998-07-21

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 709

Patent

active

057838879

ABSTRACT:
A magnetic bearing spindle device for machine tools comprises a spindle for mounting a tool element as changeably attached to a forward end thereof, a plurality of controllable magnetic bearings for contactlessly supporting the spindle, an electric motor for rotating the spindle as contactlessly supported by the magnetic bearings, a draw bar inserted through the spindle and axially movable for unclamping and clamping the tool element, state sensor switches for detecting the axial position of the draw bar to detect a state of having no tool element, an unclamping state or a clamping state, and a control unit for controlling the support of the spindle by the magnetic bearings and the rotation of the spindle by the motor based on the result of detection by the switches.

REFERENCES:
patent: 4976177 (1990-12-01), Fouche
patent: 5133158 (1992-07-01), Kihara et al.
patent: 5523701 (1996-06-01), Smith et al.
patent: 5573443 (1996-11-01), Yasuda et al.
patent: 5666014 (1997-09-01), Chen

Affiliated with

Also associated with

Rating

Magnetic bearing spindle device for machine tools does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic bearing spindle device for machine tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic bearing spindle device for machine tools will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1649370