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Title:
MAIN SHAFT DEVICE
Document Type and Number:
Japanese Patent JP2015128799
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a main shaft device which can accurately suppress the chatter vibration of a tool at the change of the tool.SOLUTION: A main shaft device comprises a housing 10, a main shaft 20, an attenuation imparting bearing 50, a fluid supply device 60, and a control device 70. The control device 70 comprises: a tool shape identifying part 70a which identifies a shape of a tool 21 attached to the main shaft; an analysis part 70b which analyzes a vibration frequency f and a motion character related to the compliance C of an integrated member when the integrated member vibrates at the impartment of a load F to the tool in the integrated member of the tool which is integrated with the main shaft on the basis of a shape of the identified tool; an attenuation coefficient calculation part 70c which calculates an attenuation coefficient c of the attenuation imparting bearing which can suppress the vibration of the integrated member on the basis of the analyzed motion character; and a control part 70d which decides a flow rate Q or a temperature T of fluid corresponding to the calculated attenuation coefficient c in the attenuation imparting bearing, and controls the flow rate or the temperature of the fluid which is supplied by the fluid supply device.

Inventors:
MATSUNAGA SHIGERU
TANASE RYOTA
Application Number:
JP2014000380A
Publication Date:
July 16, 2015
Filing Date:
January 06, 2014
Export Citation:
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Assignee:
JTEKT CORP
International Classes:
B23B19/02; B23Q11/00; B23Q15/12
Attorney, Agent or Firm:
小林 脩
山本 喜一



 
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