JP4636813B2 - 回転直動変換機構 - Google Patents
回転直動変換機構 Download PDFInfo
- Publication number
- JP4636813B2 JP4636813B2 JP2004139914A JP2004139914A JP4636813B2 JP 4636813 B2 JP4636813 B2 JP 4636813B2 JP 2004139914 A JP2004139914 A JP 2004139914A JP 2004139914 A JP2004139914 A JP 2004139914A JP 4636813 B2 JP4636813 B2 JP 4636813B2
- Authority
- JP
- Japan
- Prior art keywords
- rotation
- roller
- linear motion
- conversion mechanism
- motion conversion
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims description 49
- 238000006243 chemical reaction Methods 0.000 title claims description 40
- 230000033001 locomotion Effects 0.000 title claims description 40
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 230000009467 reduction Effects 0.000 description 9
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
Images
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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2266—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers arranged substantially in parallel to the screw shaft axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0442—Conversion of rotational into longitudinal movement
- B62D5/0451—Roller spindle drives
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
- F16H2025/2078—Coaxial drive motors the rotor being integrated with the nut or screw body
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
- Y10T74/19698—Spiral
- Y10T74/19702—Screw and nut
- Y10T74/19744—Rolling element engaging thread
- Y10T74/19781—Non-recirculating rolling elements
- Y10T74/19791—Cylindrical or quasi-cylindrical roller element [e.g., inclined roller, etc.]
- Y10T74/19795—Parallel to shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Transmission Devices (AREA)
- Power Steering Mechanism (AREA)
Description
M=2π・(ラック軸半径)・tan(ラックねじリード角)
となる。
1a:ラックねじ
1d:ラック軸
21、22、23、24:公転ローラ
21a、22a、23a、24a:ローラ軸受
21b、22b、23b、24b:ローラ溝(環状溝)
21d、22d、23d、24d:ローラ軸
3:ホルダー(ホルダ部材)
5:モータ
6:ケーシング
121、122、123、124:鼓状公転ローラ
Claims (8)
- 円形棒状のラックロッドと、このラックロッドの周囲に当該ラックロッドと相対的に回転可能に支持されたホルダ部材と、このホルダ部材に回転可能に支持された複数本の公転ローラと、前記ロッドと前記ホルダ部材を相対的に回転させる回転駆動源とを備えた回転直動変換機構において、
前記ラックロッドが、外周面にねじを備え、
前記複数本の公転ローラが、外周面に前記ラックロッドのねじと噛み合って当該公転ローラの外周面を一周する環状溝を備え、
前記ラックロッドの軸方向と前記公転ローラの軸方向がなす2軸角度を前記ロッドのねじのリード角と同一とし、前記公転ローラが前記ラックロッドに対してねじり配置され、
前記複数本の公転ローラを順次、当該公転ローラの軸方向にずらして前記ホルダ部材に配置し、前記公転ローラのローラ軸上で、前記ラックロッドの回転軸であるラックロッド軸に近い点として定義される最接近点が、前記複数本の公転ローラの何れにおいても中央にくるように構成されていることを特徴とする回転直動変換機構。 - 請求項1に記載の回転直動変換機構において、
前記公転ローラを前記ホルダ部材に回転支持する軸受部で発生する摩擦トルクが前記ラックロッドの外周面にあるねじと前記公転ローラの前記環状溝の噛み合い部で発生する摩擦トルクよりも小さくなるように構成したことを特徴とする回転直動変換機構。 - 請求項1に記載の回転直動変換機構において、
前記公転ローラと前記ラックロッドのねじの噛み合い箇所の少なくとも一つの箇所を線状にしたことを特徴とする回転直動変換機構。 - 請求項1に記載の回転直動変換機構において、
前記複数本の公転ローラが、前記ラックロッドの周囲に概略等角度間隔に配置されていることを特徴とする回転直動変換機構。 - 請求項1に記載の回転直動変換機構において、
前記公転ローラの種類が前記公転ローラの設置本数よりも少なくされていることを特徴とする回転直動変換機構。 - 請求項1乃至請求項5の何れかに記載の回転直動変換機構において、
前記回転駆動源の駆動力を前記ホルダ部材に与え、前記ホルダ部材の回転により前記ラックロッドとの相対回転が実現されていることを特徴とする回転直動変換機構。 - 請求項1に記載の回転直動変換機構において、
前記2軸角度を、前記公転ローラと前記ラックロッドの噛み合わせ後に調整可能にする軸角調整手段が設けられていることを特徴とする回転直動変換機構。 - 請求項1乃至請求項7の何れかに記載の回転直動変換機構において、
前記公転ローラの少なくとも前記環状溝が合成樹脂で形成されていることを特徴とする回転直動変換機構。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004139914A JP4636813B2 (ja) | 2004-05-10 | 2004-05-10 | 回転直動変換機構 |
US11/121,015 US20050247150A1 (en) | 2004-05-10 | 2005-05-04 | Mechanism for converting rotary motion into linear motion |
DE602005006042T DE602005006042T2 (de) | 2004-05-10 | 2005-05-10 | Vorrichtung zur Umwandlung einer rotierenden Bewegung in eine lineare Bewegung. |
EP05010144A EP1596101B1 (en) | 2004-05-10 | 2005-05-10 | Mechanism for converting rotary motion into linear motion |
US11/269,628 US8011264B2 (en) | 2004-05-10 | 2005-11-09 | Mechanism for converting rotary motion into linear motion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004139914A JP4636813B2 (ja) | 2004-05-10 | 2004-05-10 | 回転直動変換機構 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005321043A JP2005321043A (ja) | 2005-11-17 |
JP4636813B2 true JP4636813B2 (ja) | 2011-02-23 |
Family
ID=34936345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004139914A Expired - Fee Related JP4636813B2 (ja) | 2004-05-10 | 2004-05-10 | 回転直動変換機構 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050247150A1 (ja) |
EP (1) | EP1596101B1 (ja) |
JP (1) | JP4636813B2 (ja) |
DE (1) | DE602005006042T2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112409A (ja) | 2008-11-05 | 2010-05-20 | Hitachi Constr Mach Co Ltd | リニアアクチュエータ |
DE102010015665A1 (de) * | 2010-04-16 | 2011-10-20 | Esw Gmbh | Linearantrieb für eine Schiffsrudermaschine |
CN105457171A (zh) * | 2014-09-11 | 2016-04-06 | 北京大基康明医疗设备有限公司 | 医用电子直线加速器的机架结构及医用电子直线加速器 |
DE102018116867A1 (de) * | 2018-07-12 | 2020-01-16 | Schaeffler Technologies AG & Co. KG | Elektromechanischer Aktuator und Hinterachslenkung |
DE102019103383B4 (de) * | 2019-02-12 | 2023-08-10 | Schaeffler Technologies AG & Co. KG | Planetenwälzgewindetrieb und Aktuator für eine Hinterachslenkung eines Kraftfahrzeuges mit einem derartigen Planetenwälzgewindetrieb |
CN117647343A (zh) * | 2023-12-04 | 2024-03-05 | 广东省医疗器械质量监督检验所 | 一种植发机测试工装、测试装置和测试方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5395470A (en) * | 1977-01-31 | 1978-08-21 | Shiyouichi Naruse | Female screw for feed screw |
JPS59163259U (ja) * | 1974-03-21 | 1984-11-01 | リチヤ−ド、バクスタ−、スタンレ− | 直線運動装置 |
JPS61157865A (ja) * | 1984-12-28 | 1986-07-17 | Giichi Nakamura | 送り機構 |
JPS624960A (ja) * | 1985-06-28 | 1987-01-10 | Koyo Seiko Co Ltd | 回転運動と直線運動との運動変換装置 |
JP2001182798A (ja) * | 1999-12-27 | 2001-07-06 | Koyo Mach Ind Co Ltd | 送りねじユニット及びこれを備えた送り装置 |
JP2003097666A (ja) * | 2001-09-27 | 2003-04-03 | Fujitsu Ltd | スクリュー軸、およびこのスクリュー軸を備えた駆動機構 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2441168A (en) * | 1944-02-28 | 1948-05-11 | Sperry Corp | Carriage translating mechanism |
US2525326A (en) * | 1947-06-04 | 1950-10-10 | Sundstrand Machine Tool Co | Antifriction transmission |
US3004445A (en) * | 1959-10-14 | 1961-10-17 | Zeiss Carl | Screw drive for measuring instruments |
US3101623A (en) * | 1961-09-19 | 1963-08-27 | Sperry Rand Corp | Carriage translating device |
US3508452A (en) * | 1968-04-11 | 1970-04-28 | Roantree Electro Mech Corp | Gearing mechanism |
US3861226A (en) * | 1972-07-17 | 1975-01-21 | Richard B Stanley | Linear actuator |
US4383103A (en) * | 1982-02-08 | 1983-05-10 | Milliken Research Corporation | Aminoalkoxyamides and epoxy resin compositions containing same |
US4741250A (en) * | 1984-01-30 | 1988-05-03 | Weyer Paul P | Fluid-power device using rollers |
US4838103A (en) * | 1986-07-03 | 1989-06-13 | Weyer Paul P | Fluid-power device with rollers |
US4881419A (en) * | 1984-01-30 | 1989-11-21 | Weyer Paul P | Fluid-power bearing actuator |
US4748866A (en) * | 1986-07-03 | 1988-06-07 | Weyer Paul P | Linear helical actuator |
NL9001394A (nl) * | 1990-06-19 | 1992-01-16 | P G Van De Veen Consultancy B | Bestuurbare demper. |
JPH07165049A (ja) | 1993-12-10 | 1995-06-27 | Nisshinbo Ind Inc | 4輪駆動車輌のアンチスキッド制御方法 |
DE19516199C2 (de) * | 1995-05-08 | 1998-01-08 | Deutsche Forsch Luft Raumfahrt | Verwendung einer Vorrichtung zur Umwandlung einer Dreh- in eine Axialbewegung |
WO2001090599A1 (de) * | 2000-05-19 | 2001-11-29 | Schiebel Antriebstechnik Gesellschaft M.B.H. | Vorrichtung zur umsetzung von rotationsbewegungen in linearbewegungen bzw. umgekehrt |
US7044017B2 (en) * | 2003-06-09 | 2006-05-16 | Cornelius Charles C | Roller screw system |
-
2004
- 2004-05-10 JP JP2004139914A patent/JP4636813B2/ja not_active Expired - Fee Related
-
2005
- 2005-05-04 US US11/121,015 patent/US20050247150A1/en not_active Abandoned
- 2005-05-10 EP EP05010144A patent/EP1596101B1/en not_active Expired - Fee Related
- 2005-05-10 DE DE602005006042T patent/DE602005006042T2/de active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59163259U (ja) * | 1974-03-21 | 1984-11-01 | リチヤ−ド、バクスタ−、スタンレ− | 直線運動装置 |
JPS5395470A (en) * | 1977-01-31 | 1978-08-21 | Shiyouichi Naruse | Female screw for feed screw |
JPS61157865A (ja) * | 1984-12-28 | 1986-07-17 | Giichi Nakamura | 送り機構 |
JPS624960A (ja) * | 1985-06-28 | 1987-01-10 | Koyo Seiko Co Ltd | 回転運動と直線運動との運動変換装置 |
JP2001182798A (ja) * | 1999-12-27 | 2001-07-06 | Koyo Mach Ind Co Ltd | 送りねじユニット及びこれを備えた送り装置 |
JP2003097666A (ja) * | 2001-09-27 | 2003-04-03 | Fujitsu Ltd | スクリュー軸、およびこのスクリュー軸を備えた駆動機構 |
Also Published As
Publication number | Publication date |
---|---|
EP1596101B1 (en) | 2008-04-16 |
DE602005006042D1 (de) | 2008-05-29 |
JP2005321043A (ja) | 2005-11-17 |
US20050247150A1 (en) | 2005-11-10 |
DE602005006042T2 (de) | 2009-05-14 |
EP1596101A3 (en) | 2006-09-20 |
EP1596101A2 (en) | 2005-11-16 |
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