Spindle Device Of Machine Tool

Abstract: A spindle device of machine tool includes a pressure sensor (31) that detects a pressing force to a rod (18) by a drive (25), a displacement sensor (32) that detects displacement of the rod (18), a tool clamping-force detector (33) that detects a clamping force to a tool (19) by a collet (20) based on the pressing force to the rod (18) and the displacement of the rod (18), and a spring-replacement-timing determining unit (36) that determines a replacement timing of disc springs (24) based on the tool clamping force and a preset biasing force characteristic value of the disc springs (24), thereby allowing highly accurate determination of a replacement timing of a biasing unit by appropriately detecting a tool clamping force.

Patent Information

Application #

Filing Date

29 September 2009

Publication Number

34/2013

Publication Type

INA

Invention Field

PHYSICS

Status

Email

Parent Application

Applicants

MITSUBISHI HEAVY INDUSTRIES LTD.

16-5 Konan 2-chome Minato-ku Tokyo 108-8215 Japan

Inventors

1. INOUE Atsushi

C/o Hiroshima Research & Development Center Mitsubishi Heavy Industries Ltd. 6-22 Kan-on-shin-machi 4-chome Nishi-ku Hiroshima Hiroshima-ken 733-8553 Japan

2. YOSHIKAWA Mutsumi

C/o Machine Tool Division Mitsubishi Heavy Industries Ltd. 130 Roku-jizo Ritto Shiga-ken 520-3080 Japan

3. TAUCHI Hiroyuki

C/o Machine Tool Division Mitsubishi Heavy Industries Ltd. 130 Roku-jizo Ritto Shiga-ken 520-3080 Japan

Specification

SPINDLE DEVICE OF MACHINE TOOL

Documents

Application Documents

#	Name	Date
1	6239-DELNP-2009-Correspondence-Others-(09-10-2009).pdf	2009-10-09
2	6239-DELNP-2009-Assignment-(09-10-2009).pdf	2009-10-09
3	6239-DELNP-2009-Form-3-(17-02-2010).pdf	2010-02-17
4	6239-DELNP-2009-Correspondence-Others (17-02-2010).pdf	2010-02-17
5	6239-DELNP-2009-GPA-(25-10-2010).pdf	2010-10-25
6	6239-DELNP-2009-Form-18-(25-10-2010).pdf	2010-10-25
7	6239-DELNP-2009-Correspondence-Others-(25-10-2010).pdf	2010-10-25
8	Translation-Search Report.pdf	2011-08-21
9	Priority Document.pdf	2011-08-21
10	Form-5.pdf	2011-08-21
11	Form-3.pdf	2011-08-21
12	Form-1.pdf	2011-08-21
13	Drawings.pdf	2011-08-21
14	6239-delnp-2009-Form-3-(13-02-2012).pdf	2012-02-13
15	6239-delnp-2009-Correspondence-Others-(13-02-2012).pdf	2012-02-13
16	6239-delnp-2009-Correspondence Others-(14-03-2012).pdf	2012-03-14
17	6239-delnp-2009-Form-3-(15-04-2013).pdf	2013-04-15
18	6239-delnp-2009-Correspondence-Others-(15-04-2013).pdf	2013-04-15
19	6239-DELNP-2009-FER.pdf	2017-07-07
20	6239-DELNP-2009-AbandonedLetter.pdf	2018-01-29

Search Strategy

1	6239_DELNP_2009_Search_Strategy_30-06-2017.pdf