WO2008123451A1 - Roller screw - Google Patents

Roller screw Download PDF

Info

Publication number
WO2008123451A1
WO2008123451A1 PCT/JP2008/056183 JP2008056183W WO2008123451A1 WO 2008123451 A1 WO2008123451 A1 WO 2008123451A1 JP 2008056183 W JP2008056183 W JP 2008056183W WO 2008123451 A1 WO2008123451 A1 WO 2008123451A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
circulating pipe
passage
direction turning
twisted
Prior art date
Application number
PCT/JP2008/056183
Other languages
French (fr)
Japanese (ja)
Inventor
Akimasa Yoshida
Takashi Sakuyama
Original Assignee
Thk Co., Ltd.
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 Thk Co., Ltd. filed Critical Thk Co., Ltd.
Priority to JP2009509232A priority Critical patent/JP5226671B2/en
Publication of WO2008123451A1 publication Critical patent/WO2008123451A1/en

Links

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
    • 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
    • F16H2025/2271—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers with means for guiding circulating rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Pinball Game Machines (AREA)

Abstract

Intended is to provide a roller screw, which is freed from any undercut even if a circulating pipe having a twisted roller return passage of a rectangular section is halved. In order to circulate a roller, there are provided a direction turning passage constituting part (9) and a circulating pipe (8). A direction turning passage is formed in the direction turning passage constituting part (9), and a roller returning passage (11) is formed in the circulating pipe (8). This circulating pipe (8) is constituted by jointing a pair of split pieces (18a and 18b), which are halved along the apexes (11a and 11b) of the diagonal lines of the roller returning passage (11) having a section shaped rectangular and twisted.
PCT/JP2008/056183 2007-03-30 2008-03-28 Roller screw WO2008123451A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009509232A JP5226671B2 (en) 2007-03-30 2008-03-28 Roller screw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-095046 2007-03-30
JP2007095046 2007-03-30

Publications (1)

Publication Number Publication Date
WO2008123451A1 true WO2008123451A1 (en) 2008-10-16

Family

ID=39830936

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/056183 WO2008123451A1 (en) 2007-03-30 2008-03-28 Roller screw

Country Status (2)

Country Link
JP (1) JP5226671B2 (en)
WO (1) WO2008123451A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085086A (en) * 1965-03-24 1967-09-27 Textron Inc Antifriction screw and nut assembly
JPH0439354U (en) * 1990-07-30 1992-04-03
JP2000161459A (en) * 1998-11-20 2000-06-16 Hiroshi Teramachi Cross roller screw device
JP2006118649A (en) * 2004-10-22 2006-05-11 Thk Co Ltd Roller screw
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1085086A (en) * 1965-03-24 1967-09-27 Textron Inc Antifriction screw and nut assembly
JPH0439354U (en) * 1990-07-30 1992-04-03
JP2000161459A (en) * 1998-11-20 2000-06-16 Hiroshi Teramachi Cross roller screw device
JP2006118649A (en) * 2004-10-22 2006-05-11 Thk Co Ltd Roller screw
JP2006125578A (en) * 2004-10-29 2006-05-18 Nsk Ltd Ball screw

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077247A1 (en) * 2010-12-08 2012-06-14 日本精工株式会社 Ball screw device
JP5500268B2 (en) * 2010-12-08 2014-05-21 日本精工株式会社 Ball screw device
US9003911B2 (en) 2010-12-08 2015-04-14 Nsk Ltd. Ball screw device

Also Published As

Publication number Publication date
JPWO2008123451A1 (en) 2010-07-15
JP5226671B2 (en) 2013-07-03

Similar Documents

Publication Publication Date Title
EP2145032A4 (en) Compositions including hardness ions and gluconate and methods employing them to reduce corrosion and etch
TW200708766A (en) Turning film having variable pitch
BRPI0813710A2 (en) Enzymes that Produce Acetyl-COA in Yeast
ECSP11011141A (en) COMPOSITE ELEMENT, MULTI-LAYER BOARD AND PANEL SHAPED ELEMENT TO FORM THIS COMPOSITE ELEMENT
WO2007143724A3 (en) Compositions and methods to enhance reverse cholesterol transport
DE502007002721D1 (en) Thread-forming screw
GB2435082A8 (en) Screw fastener system with expanding locking pln
FR2899104B1 (en) COSMETIC COMPOSITION AT LEAST ONE HYDROXY ACID, AT LEAST ONE MONO OR DISACCHARIDE AND AT LEAST ONE CERAMIDE AND METHODS
WO2013141709A8 (en) Guide, bearing means for a guide and method and parts for forming bearing means for a guide.
DK1795768T3 (en) Thread-tightening screw, especially concrete screw
WO2008038137A3 (en) Flattened bamboo panel
ZA200809576B (en) Compositions and methods for preventing or treating chronic renal failure in felines with hyperthyroidism
WO2007127204A3 (en) Methods and compositions relating to immunostimulation
DK1910531T3 (en) Synergistic effect of the combination of phytases on phytic acid hydrolysis
WO2014019907A3 (en) Torque rod
GB2452410B (en) Fast-acting gate
WO2010025030A3 (en) Housing for hand-held device with a pair of extruded elements having complementary sections removed and corresponding method
HUE039554T2 (en) Compositions for the treatment of chronic degenerative inflammatory conditions
DE502006000843D1 (en) Screw shaft coupling
WO2008123451A1 (en) Roller screw
WO2009034641A1 (en) Water jacket
WO2007121257A3 (en) Implicitly timed gear bearings
DE502007003197D1 (en) Profile system for the production of corner training in drywall construction
WO2008004910A3 (en) The method of making wicker constructions
WO2008136852A3 (en) Methods and compositions related to the structure and function of apobec3g

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08739301

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2009509232

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08739301

Country of ref document: EP

Kind code of ref document: A1