JP6867363B2 - シール構造 - Google Patents

シール構造 Download PDF

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Publication number
JP6867363B2
JP6867363B2 JP2018235299A JP2018235299A JP6867363B2 JP 6867363 B2 JP6867363 B2 JP 6867363B2 JP 2018235299 A JP2018235299 A JP 2018235299A JP 2018235299 A JP2018235299 A JP 2018235299A JP 6867363 B2 JP6867363 B2 JP 6867363B2
Authority
JP
Japan
Prior art keywords
gap
liquid
seal structure
gravity
seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2018235299A
Other languages
English (en)
Japanese (ja)
Other versions
JP2020097959A (ja
JP2020097959A5 (enExample
Inventor
鈴木　豊明
豊明 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to JP2018235299A priority Critical patent/JP6867363B2/ja
Priority to DE102019008549.3A priority patent/DE102019008549A1/de
Priority to CN201911296157.2A priority patent/CN111322407B/zh
Priority to US16/715,362 priority patent/US11306823B2/en
Publication of JP2020097959A publication Critical patent/JP2020097959A/ja
Publication of JP2020097959A5 publication Critical patent/JP2020097959A5/ja
Application granted granted Critical
Publication of JP6867363B2 publication Critical patent/JP6867363B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • 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
    • F16C32/0633—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 retained in a gap
    • 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
    • F16C32/0662—Details of hydrostatic bearings independent of fluid supply or direction of load
    • F16C32/0666—Details of hydrostatic bearings independent of fluid supply or direction of load of bearing pads
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F16C33/741—Sealings of sliding-contact bearings by means of a fluid
    • F16C33/743—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap
    • F16C33/745—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap by capillary action
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Sealing Of Bearings (AREA)
JP2018235299A 2018-12-17 2018-12-17 シール構造 Expired - Fee Related JP6867363B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2018235299A JP6867363B2 (ja) 2018-12-17 2018-12-17 シール構造
DE102019008549.3A DE102019008549A1 (de) 2018-12-17 2019-12-10 Abdichtungsstruktur
CN201911296157.2A CN111322407B (zh) 2018-12-17 2019-12-16 密封构造
US16/715,362 US11306823B2 (en) 2018-12-17 2019-12-16 Sealing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018235299A JP6867363B2 (ja) 2018-12-17 2018-12-17 シール構造

Publications (3)

Publication Number Publication Date
JP2020097959A JP2020097959A (ja) 2020-06-25
JP2020097959A5 JP2020097959A5 (enExample) 2020-08-06
JP6867363B2 true JP6867363B2 (ja) 2021-04-28

Family

ID=70859084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018235299A Expired - Fee Related JP6867363B2 (ja) 2018-12-17 2018-12-17 シール構造

Country Status (4)

Country Link
US (1) US11306823B2 (enExample)
JP (1) JP6867363B2 (enExample)
CN (1) CN111322407B (enExample)
DE (1) DE102019008549A1 (enExample)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035617B1 (enExample) * 1970-12-17 1975-11-18
US3778123A (en) * 1971-11-17 1973-12-11 Singer Co Liquid bearing unit and seal
US5238254A (en) * 1987-07-17 1993-08-24 Koyo Seiko Co., Ltd. Ferrofluid seal apparatus
DE3824104A1 (de) * 1987-07-17 1989-01-26 Koyo Seiko Co Ferrofluid-dichtung
JPH03282008A (ja) * 1990-03-28 1991-12-12 Nippon Seiko Kk ダンパ付エアスピンドル
US5575567A (en) * 1994-11-25 1996-11-19 Competitive Technologies, Inc. Surface tension bearings and seals
JP2001178076A (ja) 1999-10-07 2001-06-29 Nippon Densan Corp 流体シールおよびこれを用いたスピンドルモータ、並びにこのスピンドルモータを用いたディスク装置
JP2008236947A (ja) * 2007-03-22 2008-10-02 Citizen Chiba Precision Co Ltd 電動機の軸受構造
JP4737224B2 (ja) * 2008-04-24 2011-07-27 トヨタ自動車株式会社 シール構造
JP5722393B2 (ja) 2013-07-11 2015-05-20 ファナック株式会社 回転部にシール構造部を有する工作機械
JP5980891B2 (ja) * 2014-12-16 2016-08-31 ファナック株式会社 回転ジョイント支持構造部、工作機械の主軸および電動機

Also Published As

Publication number Publication date
JP2020097959A (ja) 2020-06-25
DE102019008549A1 (de) 2020-06-18
CN111322407A (zh) 2020-06-23
CN111322407B (zh) 2022-11-29
US11306823B2 (en) 2022-04-19
US20200191277A1 (en) 2020-06-18

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