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Patent Searching and Data


Title:
DAMPING AND SOUND SUPPRESSING ACTIVE CONTROLLER OF FRAME
Document Type and Number:
Japanese Patent JPH05215179
Kind Code:
A
Abstract:

PURPOSE: To control and suppress sound of a frame in the territory from low frequency to high frequency by providing a control means provided with an exciter installed thereon on a part where vibration of a machine frame such as a processing machine, etc., is large and controlling the exciter by way of detecting time change of natural vibration of the machine frame.

CONSTITUTION: A concrete filled part 3 filled with concrete as a means to increase mass, damping or the like is arranged as a vibrationproofing means in an area (upper part, lower part on head end side) where vibration of a C type frame 11 is large in a press machine. By this concrete filled part 3, vibration in a high frequency territory of the frame 11 is restrained and simultaneously, only natural vibration in a low frequency territory is allowed to remain. In order to detect vibration of this frame 11 on the basis of time, an acceleration pick-up 7 is provided and its detection signal is inputted to a controller 9, and by this controller 9, an exciter 5 provided on each of the concrete filled parts 3 is driven and controlled so that vibration in an antiphase to vibration of the frame 11 is generated.


Inventors:
KOBAYASHI HIDEO
Application Number:
JP2276992A
Publication Date:
August 24, 1993
Filing Date:
February 07, 1992
Export Citation:
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Assignee:
AMADA CO LTD
International Classes:
F16F15/02; G05D19/02; (IPC1-7): F16F15/02; G05D19/02
Attorney, Agent or Firm:
Hidekazu Miyoshi (4 outside)