JP7138494B2 - 予圧センサ、軸受装置、軸受、および間座 - Google Patents
予圧センサ、軸受装置、軸受、および間座 Download PDFInfo
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- JP7138494B2 JP7138494B2 JP2018124255A JP2018124255A JP7138494B2 JP 7138494 B2 JP7138494 B2 JP 7138494B2 JP 2018124255 A JP2018124255 A JP 2018124255A JP 2018124255 A JP2018124255 A JP 2018124255A JP 7138494 B2 JP7138494 B2 JP 7138494B2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Rolling Contact Bearings (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Support Of The Bearing (AREA)
Description
図1は、実施の形態1の軸受装置の構成を示す断面図である。軸受装置1は、たとえば、工作機械のビルトインモータ方式のスピンドル装置に応用される。この場合、軸受装置1で支持されている主軸4の一方端側には図示しないモータが組み込まれ、他方端にはエンドミル等の切削工具が接続される。なお、図1に示す軸受装置1の構造は、回転中心軸O-Oを中心として上下対称であるが、回転中心軸O-Oより下の部分は図示を省略している。
図8は、実施の形態2の軸受装置に用いられる予圧センサの構成を示す図である。図9は、図8の矢印B方向から見た外輪間座の一部を示す図である。
実施の形態1,2では、2個の軸受5を背面組み合わせ(DB組み合わせ)としたが、実施の形態3では、2個の軸受5を正面組み合わせ(DF組み合わせ)とした例を示す。
図15は、実施の形態4の軸受装置に用いられる予圧センサの構成を示す図である。図16は、図15の矢印C方向から見た内輪間座の一部を示す図である。図15、図16に示すように、内輪間座56iAの端面に凸部を設けて、その端面に予圧センサ61を配置してもよい。
Claims (8)
- 内輪、外輪、転動体を含む軸受の予圧を検出する予圧センサを備え、
前記予圧センサは、
第1主面と第2主面とを有する膜状の感圧部材と、
前記感圧部材に電気的に接続される第1電極および第2電極とを備え、
前記感圧部材は、前記第1主面と前記第2主面との間に作用する圧力に応じて前記第1電極と前記第2電極との間の直流抵抗が変化するように構成され、
前記第1主面は前記軸受の端面に向けて配置され、前記第2主面は前記端面に対向する前記軸受に予圧を与える部材の対向面に向けて配置され、
前記軸受と、
前記軸受に隣接して配置される間座とをさらに備え、
前記軸受に予圧を与える部材は、前記間座であり、
前記第1主面が前記端面に接し、前記第2主面が前記対向面に接するように前記予圧センサが配置され、
前記軸受に予圧が印加される経路上に配置された前記間座の端面には凸部が設けられ、
前記凸部の突出面に前記感圧部材が配置される、軸受装置。 - 前記感圧部材は、
絶縁膜と、
前記絶縁膜上に形成され、面圧の変化で抵抗が変化する薄膜パターンと、
前記薄膜パターン上に形成され、前記薄膜パターンを保護する保護膜とを含む薄膜センサである、請求項1に記載の軸受装置。 - 前記感圧部材は、
第1絶縁層と、
前記第1電極が接続される第1電極層と、
感圧インクまたは感圧ゴムで形成される感圧層と、
前記第2電極が接続される第2電極層と、
第2絶縁層とを含み、
前記第1主面と前記第2主面との間に、前記第1絶縁層、前記第1電極層、前記感圧層、前記第2電極層、前記第2絶縁層が、順に配置される、請求項1に記載の軸受装置。 - 前記軸受は、第1軸受であり、
前記軸受装置は、第2軸受をさらに備え、
前記間座は、前記第1軸受と前記第2軸受との間に配置され、
前記第1軸受と前記第2軸受とは背面組み合わせとなるように配置され、
前記第1軸受の外輪端面と前記間座の外輪間座端面との間に前記予圧センサが配置される、請求項1に記載の軸受装置。 - 前記軸受は、第1軸受であり、
前記軸受装置は、第2軸受をさらに備え、
前記間座は、前記第1軸受と前記第2軸受との間に配置され、
前記第1軸受と前記第2軸受とは正面組み合わせとなるように配置され、
前記第1軸受の内輪端面と前記間座の内輪間座端面との間に前記予圧センサが配置される、請求項1に記載の軸受装置。 - 前記間座は、内輪間座と外輪間座とを含み、
前記軸受装置は、
前記内輪間座の外周面に配置され、電力受信部とセンサ信号送信部とセンサ信号処理部とを内蔵したセンサ信号送信機と、
前記外輪間座の内周面に配置され、前記電力受信部に非接触で給電する供給電力送信部と前記センサ信号送信部から非接触でセンサ信号を受信するセンサ信号受信部とを内蔵したセンサ信号受信機とをさらに備え、
前記センサ信号送信部は、前記電力受信部から電力が供給され、前記予圧センサの出力を非接触で前記センサ信号受信機側に送信する、請求項1~5のいずれか1項に記載の軸受装置。 - 前記間座は、内輪間座と外輪間座とを含み、
前記外輪間座または前記内輪間座は、前記凸部を含む第1部材と、前記第1部材がはめ込まれる凹部が形成された第2部材とを含む、請求項1に記載の軸受装置。 - 前記凸部に配置された前記感圧部材と、前記軸受の端面との間に配置される中間間座をさらに備える、請求項1または請求項7に記載の軸受装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018124255A JP7138494B2 (ja) | 2018-06-29 | 2018-06-29 | 予圧センサ、軸受装置、軸受、および間座 |
DE112019003279.8T DE112019003279T5 (de) | 2018-06-29 | 2019-06-26 | Vorspannungssensor, Lagervorrichtung, Lager und Distanzstück |
CN201980043665.1A CN112334747A (zh) | 2018-06-29 | 2019-06-26 | 预压传感器、轴承装置、轴承以及衬垫 |
KR1020217000145A KR20210025588A (ko) | 2018-06-29 | 2019-06-26 | 예압 센서, 베어링 장치, 베어링 및 스페이서 |
PCT/JP2019/025272 WO2020004430A1 (ja) | 2018-06-29 | 2019-06-26 | 予圧センサ、軸受装置、軸受、および間座 |
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JP2018124255A JP7138494B2 (ja) | 2018-06-29 | 2018-06-29 | 予圧センサ、軸受装置、軸受、および間座 |
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JP2020003385A JP2020003385A (ja) | 2020-01-09 |
JP7138494B2 true JP7138494B2 (ja) | 2022-09-16 |
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JP (1) | JP7138494B2 (ja) |
KR (1) | KR20210025588A (ja) |
CN (1) | CN112334747A (ja) |
DE (1) | DE112019003279T5 (ja) |
WO (1) | WO2020004430A1 (ja) |
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JP2022053084A (ja) * | 2020-09-24 | 2022-04-05 | Ntn株式会社 | 軸受装置 |
CN114689165A (zh) * | 2020-12-28 | 2022-07-01 | 财团法人工业技术研究院 | 具预压元件的感测装置 |
JP7206315B2 (ja) * | 2021-03-31 | 2023-01-17 | Ntn株式会社 | 軸受装置およびスピンドル装置 |
JP2022156806A (ja) * | 2021-03-31 | 2022-10-14 | Ntn株式会社 | 軸受装置およびスピンドル装置 |
Citations (7)
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JP2001254742A (ja) | 2000-03-08 | 2001-09-21 | Ntn Corp | 軸受装置 |
US20020076127A1 (en) | 2000-12-15 | 2002-06-20 | Tung-Chuan Wu | Active piezoelectric spindle bearing preload adjustment mechanism |
GB2376988A (en) | 2001-05-31 | 2002-12-31 | Aea Technology Plc | Force amplification mechanism |
US6508592B1 (en) | 2000-03-15 | 2003-01-21 | Umbra Cuscinetti Spa | Device for measuring and adjusting preloading on bearings |
JP2005265446A (ja) | 2004-03-16 | 2005-09-29 | Koichi Niihara | 圧電センサ |
JP2006170626A (ja) | 2004-12-10 | 2006-06-29 | Ntn Corp | 回転センサ付き軸受 |
JP2007271005A (ja) | 2006-03-31 | 2007-10-18 | Jtekt Corp | センサ付き転がり軸受装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000024854A (ja) * | 1998-07-13 | 2000-01-25 | Nippon Seiko Kk | 軸受装置 |
JP2008286219A (ja) | 2007-05-15 | 2008-11-27 | Ntn Corp | 軸受装置および軸受予圧検出装置 |
DE112008002878T5 (de) * | 2007-11-09 | 2010-12-09 | Ntn Corp. | Lageranordnung |
JP5597095B2 (ja) * | 2010-10-15 | 2014-10-01 | 日東精工株式会社 | ワッシャ型ロードセルおよびスラスト荷重検出機構 |
JP5821178B2 (ja) * | 2010-11-26 | 2015-11-24 | 日本精工株式会社 | 軸受用スペーサ |
JP6008426B2 (ja) * | 2012-10-02 | 2016-10-19 | 本田技研工業株式会社 | 薄膜センサ |
-
2018
- 2018-06-29 JP JP2018124255A patent/JP7138494B2/ja active Active
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2019
- 2019-06-26 CN CN201980043665.1A patent/CN112334747A/zh active Pending
- 2019-06-26 DE DE112019003279.8T patent/DE112019003279T5/de active Pending
- 2019-06-26 WO PCT/JP2019/025272 patent/WO2020004430A1/ja active Application Filing
- 2019-06-26 KR KR1020217000145A patent/KR20210025588A/ko active IP Right Grant
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001254742A (ja) | 2000-03-08 | 2001-09-21 | Ntn Corp | 軸受装置 |
US6508592B1 (en) | 2000-03-15 | 2003-01-21 | Umbra Cuscinetti Spa | Device for measuring and adjusting preloading on bearings |
US20020076127A1 (en) | 2000-12-15 | 2002-06-20 | Tung-Chuan Wu | Active piezoelectric spindle bearing preload adjustment mechanism |
GB2376988A (en) | 2001-05-31 | 2002-12-31 | Aea Technology Plc | Force amplification mechanism |
JP2005265446A (ja) | 2004-03-16 | 2005-09-29 | Koichi Niihara | 圧電センサ |
JP2006170626A (ja) | 2004-12-10 | 2006-06-29 | Ntn Corp | 回転センサ付き軸受 |
JP2007271005A (ja) | 2006-03-31 | 2007-10-18 | Jtekt Corp | センサ付き転がり軸受装置 |
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DE112019003279T5 (de) | 2021-04-01 |
WO2020004430A1 (ja) | 2020-01-02 |
CN112334747A (zh) | 2021-02-05 |
KR20210025588A (ko) | 2021-03-09 |
JP2020003385A (ja) | 2020-01-09 |
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