JP6455177B2 - 静圧流体軸受装置、静圧流体軸受装置を用いた工作機械用主軸装置 - Google Patents
静圧流体軸受装置、静圧流体軸受装置を用いた工作機械用主軸装置 Download PDFInfo
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- JP6455177B2 JP6455177B2 JP2015011583A JP2015011583A JP6455177B2 JP 6455177 B2 JP6455177 B2 JP 6455177B2 JP 2015011583 A JP2015011583 A JP 2015011583A JP 2015011583 A JP2015011583 A JP 2015011583A JP 6455177 B2 JP6455177 B2 JP 6455177B2
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- Prior art keywords
- bearing
- lubricant
- rotating shaft
- bearing device
- shaft
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
- B23Q1/385—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports in which the thickness of the fluid-layer is adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0651—Details of the bearing area per se
- F16C32/0659—Details of the bearing area per se of pockets or grooves
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Turning (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Description
12 砥石軸ハウジング
14 軸受メタル
16 流路(供給路)
18 静圧部
20 軸受隙間
22 軸受面部
24 ポケット
26 ポケットの底部
28 ポケットの縁部
30 ランド部
32 対向面
40 溝部
42 側溝部
44 上流溝部
46 下流溝部
110 基台
111 Z軸方向ガイドレール
112 Z軸方向スライドテーブル
113 Z軸方向送りねじ
114 Z軸方向駆動モータ
115 Z軸方向位置検出手段
121 X軸方向ガイドレール
122 X軸方向スライドテーブル
123 X軸方向送りねじ
124 X軸方向駆動モータ
125 X軸方向位置検出手段
126 砥石駆動モータ
127 駆動プーリ
128 従動プーリ
129 ベルト
130 砥石軸ホルダ
131 砥石軸(回転軸)
132 砥石
140 ワーク保持装置
141 保持台
142 保持軸ハウジング
143 保持軸部材
144 センタ部材
150 ワーク保持装置
151 保持台
152 保持軸ハウジング
153 保持軸部材
154 センタ部材
160 ツルーイング装置
177 ツルア
180 制御手段
C 第1軸受隙間
H 第2軸受隙間
L1 砥石回転軸
L2 ワーク回転軸
L3 ツルア回転軸
P ポンプ
R 潤滑液剤
U 砥石軸の周速
VM 仮想平面
W ワーク
Claims (5)
- 静圧流体軸受装置であって、
回転軸を回転支持するための静圧部を有する軸受メタルを備え、
前記静圧部は、前記回転軸の表面との間に潤滑液剤が充填される軸受隙間と、前記回転軸の表面と並行する軸受面部と、該軸受面部の周方向に隣接して凹設される複数のポケットと、該ポケットの底部から前記回転軸の表面に向かって突出し前記回転軸の表面と並行する対向面と前記ポケットの縁部との間に溝部を有するランド部と、を有し、
前記溝部は、前記ランド部の両側部に円周方向に配設された側溝部と、前記回転軸の回転方向の上流側に位置する上流溝部と下流側に位置する下流溝部とを有し、
前記上流溝部に連通し前記静圧部に潤滑液剤を供給する供給路を有し、
前記軸受隙間は、前記回転軸の表面と前記軸受面部との間の第1軸受隙間と、前記回転軸の表面と前記対向面との間の第2軸受隙間と、を有し、
前記第2軸受隙間は、前記第1軸受隙間より大きい関係であり、
前記潤滑液剤の密度をρ、
前記潤滑液剤の粘性係数をμ、
前記回転軸の周速をU、
前記第2軸受隙間をHである場合に、
前記第2軸受隙間におけるレイノルズ数Reは、Re=ρUH/μで表され、
前記回転軸が回転支持される状態の第2軸受隙間における潤滑液剤の流れはRe<2000である静圧流体軸受装置。 - 請求項1に記載の静圧流体軸受装置であって、
前記第2軸受隙間は、前記ランド部における前記ポケットの底部から前記対向面の長さより小さい関係である静圧流体軸受装置。 - 請求項1または請求項2に記載の静圧流体軸受装置であって、
前記潤滑液剤は、水または組成に占める水の割合が90%以上の水溶液または、低粘度鉱油である静圧流体軸受装置。 - 請求項1から請求項3のいずれかに記載の静圧流体軸受装置であって、
前記回転軸が回転支持される状態の前記第2軸受隙間における前記潤滑液剤は前記回転軸の回転方向に沿って流れる層流であり、
前記層流の潤滑液剤の一部は前記側溝部を経由して前記供給路を有する前記上流溝部への流れとなる静圧流体軸受装置。 - 請求項1から請求項4のいずれかに記載の静圧流体軸受装置を用いて工作機械における工作機械用主軸を回転支持する工作機械用主軸装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015011583A JP6455177B2 (ja) | 2015-01-23 | 2015-01-23 | 静圧流体軸受装置、静圧流体軸受装置を用いた工作機械用主軸装置 |
DE102016100995.4A DE102016100995A1 (de) | 2015-01-23 | 2016-01-21 | Hydrostatische Lagervorrichtung und Werkzeugmaschinenhauptspindelvorrichtung mit hydrostatischer Lagervorrichtung |
CN201610040469.7A CN105817650A (zh) | 2015-01-23 | 2016-01-21 | 静压流体轴承装置以及机床用主轴装置 |
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JP2015011583A JP6455177B2 (ja) | 2015-01-23 | 2015-01-23 | 静圧流体軸受装置、静圧流体軸受装置を用いた工作機械用主軸装置 |
Publications (2)
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JP2016136047A JP2016136047A (ja) | 2016-07-28 |
JP6455177B2 true JP6455177B2 (ja) | 2019-01-23 |
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Country Status (3)
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JP (1) | JP6455177B2 (ja) |
CN (1) | CN105817650A (ja) |
DE (1) | DE102016100995A1 (ja) |
Families Citing this family (1)
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CN112405219B (zh) * | 2020-10-20 | 2022-09-23 | 南京合信自动化有限公司 | 一种带有快速定位机构的机械零件加工用打磨机器人 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3903993A (en) * | 1973-03-26 | 1975-09-09 | Minster Machine Co | Hydrostatic bearing arrangement for press slide |
DE2966487D1 (en) * | 1978-05-17 | 1984-01-19 | Nat Res Dev | Hydrostatic bearing |
DE3173273D1 (en) * | 1980-11-07 | 1986-01-30 | Nat Res Dev | Improvements in or relating to fluid bearings |
JPH04249614A (ja) * | 1991-01-07 | 1992-09-04 | Toyoda Mach Works Ltd | 流体軸受 |
US5466071A (en) * | 1994-03-10 | 1995-11-14 | Advanced Engineering Systems, Operations & Products, Inc. | High speed hydrostatic spindle design |
JPH0953640A (ja) * | 1995-08-18 | 1997-02-25 | Mitsutoyo Corp | 静圧軸受装置 |
JP2001304260A (ja) * | 2000-04-27 | 2001-10-31 | Toyoda Mach Works Ltd | 流体軸受装置及びこの流体軸受装置を用いた研削盤の砥石軸装置 |
JP4992986B2 (ja) * | 2010-01-22 | 2012-08-08 | 新東工業株式会社 | 静圧軸受装置および静圧軸受装置を備えたステージ |
CN203051487U (zh) * | 2012-11-30 | 2013-07-10 | 綦江齿轮传动有限公司 | 磨床动静压轴承润滑油路结构 |
CN203176167U (zh) * | 2013-04-12 | 2013-09-04 | 胡惜时 | 一种动静压轴承 |
CN103230824B (zh) * | 2013-04-28 | 2016-02-10 | 昆明学院 | 一种节能混磨机 |
CN203730559U (zh) * | 2014-02-19 | 2014-07-23 | 日本精工株式会社 | 静压气体轴承 |
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- 2015-01-23 JP JP2015011583A patent/JP6455177B2/ja active Active
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- 2016-01-21 DE DE102016100995.4A patent/DE102016100995A1/de active Pending
- 2016-01-21 CN CN201610040469.7A patent/CN105817650A/zh active Pending
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Publication number | Publication date |
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CN105817650A (zh) | 2016-08-03 |
DE102016100995A1 (de) | 2016-07-28 |
JP2016136047A (ja) | 2016-07-28 |
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