Title:
PROCESSING METHOD AND PROCESSING DEVICE
Document Type and Number:
Japanese Patent JP2015223685
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To detect contact between a tool and a workpiece, without receiving restriction to a control system of an inverter for driving a spindle motor, in a processing device for detecting that the tip of the tool contacts with the workpiece, by lowering a spindle with a rotor shaft for connecting the tool as a rotor of the motor.SOLUTION: A processing device comprises a circuit system for detecting a change in capacitance of a capacitor between an electrode installed on the stator side of a spindle for electrostatically coupling with a rotor shaft and the earth detected by the electrode when the tool tip contacts with a workpiece and a control part for determining that the tool tip contacts with the workpiece when detecting a change in the capacitance.
Inventors:
YAMAGAMI KENTARO
YUKI TORU
YUKI TORU
Application Number:
JP2014112030A
Publication Date:
December 14, 2015
Filing Date:
May 30, 2014
Export Citation:
Assignee:
VIA MECHANICS LTD
International Classes:
B23Q17/22; B23B47/18; B26D5/00; B26D5/28
Domestic Patent References:
| JP2006281353A | 2006-10-19 |