Title:
TAPPING DEVICE AND TAPPING UNIT
Document Type and Number:
WIPO Patent Application WO/2023/190126
Kind Code:
A1
Abstract:
[Problem] To provide a tapping device and a tapping unit with which device simplification, space saving, and miniaturization are possible, and which enable improved degrees of freedom of tapping and accurate tapping. [Solution] A tapping device 1 that performs tapping on a workpiece W comprises: a spindle unit 2 that includes a rotary shaft 3 (rotating shaft) having a tap T provided at a distal end thereof, and an IPM motor 4 that rotationally drives the rotary shaft 3; and an inverter device (a motor driver) 11 that drives the IPM motor 4. The inverter device 11 is used to: drive the IPM motor 4 by means of sensorless control in which a magnetic pole position of the IPM motor 4 is estimated using saliency of the IPM motor 4; and move the rotary shaft 3 in an axial direction of the rotary shaft 3. The inverter device is configured to generate a rotational position signal on the basis of the magnetic pole position of the IPM motor 4 estimated by the sensorless control.
Inventors:
INOUE SHIGEAKI (JP)
Application Number:
PCT/JP2023/011756
Publication Date:
October 05, 2023
Filing Date:
March 24, 2023
Export Citation:
Assignee:
MSI SYSTEM CO LTD (JP)
International Classes:
B23G1/16; H02P6/185
Domestic Patent References:
| WO2012157039A1 | 2012-11-22 | |||
| WO2009040965A1 | 2009-04-02 | |||
| WO2020204047A1 | 2020-10-08 |
Foreign References:
| JP2003181722A | 2003-07-02 | |||
| JP2019180161A | 2019-10-17 | |||
| JPH0224023A | 1990-01-26 | |||
| JP2002254268A | 2002-09-10 |
Attorney, Agent or Firm:
TOKAI PATENT AND TRADEMARK ATTORNEYS (JP)
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