Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
QUICK STOPPER FOR BODY OF ROTATION
Document Type and Number:
Japanese Patent JP3589227
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To apply a brake to a body of rotation by the regenerative brake even by stopping power supply to a control device from a power source when the (external) power source is cut off at emergency stop time, service interruption time, etc., taken for a long period of time.
SOLUTION: This quick stopper 30 for a body of rotation is constituted by providing spindles 9A, 9B (body of rotation), spindle motors 6A, 6B driving the spindles 9A, 9B, a control device 5 controlling driving of the motors 6A, 6B through an inverter 4, and a service interruption detector 25 (detection means) detecting cutoff of power supply from a commercial AC power source 20 and the control device 5, when a power cutoff is detected, commands the spindle motor to decelerate to make the control device 5 supply regenerative power by the spindle motor, up to the time to continuously command the spindle motor to decelerate till a system turns down by insufficiency of the regenerative power.


Inventors:
Kinzo Hashimoto
Application Number:
JP2002088784A
Publication Date:
November 17, 2004
Filing Date:
March 27, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Murata Machinery Co., Ltd.
International Classes:
H02P3/18; (IPC1-7): H02P3/18
Domestic Patent References:
JP2001253650A
JP2001212778A
JP11256440A
JP11164589A
JP11107065A
JP2087986A
JP11501496A
Attorney, Agent or Firm:
Juichiro Yano