Title:
工作機械
Document Type and Number:
Japanese Patent JP7298131
Kind Code:
B2
Abstract:
A machine tool that generates internal teeth or external teeth on a cylindrical workpiece includes a workpiece holder, a column which is relatively movable to the workpiece holder, a rotary main spindle which is rotatable with respect to the column, a working tool which is held by the rotary main spindle, and a phase detecting unit which detects a phase of the working tool with respect to the rotary main spindle. The working tool includes a cutter portion which has cutters, a holder portion, and a detected portion which is formed on the holder portion. The phase detecting unit includes a detecting section which detects the detected portion, and a calculating section which calculates a phase angle of the detected portion with respect to a reference position of the rotary main spindle, based on a result detected by the detecting section.
Inventors:
Seiichi Ohno
Minoru Sato
Takuya Nakayama
Tetsuro Furuhata
Minoru Sato
Takuya Nakayama
Tetsuro Furuhata
Application Number:
JP2018191878A
Publication Date:
June 27, 2023
Filing Date:
October 10, 2018
Export Citation:
Assignee:
JTEKT Corporation
International Classes:
B23F23/12; B23F5/16; B23Q3/157; B23Q17/00; B23Q17/22
Domestic Patent References:
| JP2002200542A | ||||
| JP2008188717A | ||||
| JP11320341A | ||||
| JP2014172114A | ||||
| JP9160619A | ||||
| JP2015178146A | ||||
| JP2014184505A | ||||
| JP11033881A | ||||
| JP9300178A | ||||
| JP10328979A | ||||
| JP2006341366A | ||||
| JP7227716A | ||||
| JP2017067670A |
Foreign References:
| US4942657 | ||||
| WO2017108731A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Aichi International Patent Office
Patent Attorney Corporation Kyoritsu Patent Office
Patent Attorney Corporation Kyoritsu Patent Office