JPS56116951A - Ball screw - Google Patents

Ball screw

Info

Publication number
JPS56116951A
JPS56116951A JP2043680A JP2043680A JPS56116951A JP S56116951 A JPS56116951 A JP S56116951A JP 2043680 A JP2043680 A JP 2043680A JP 2043680 A JP2043680 A JP 2043680A JP S56116951 A JPS56116951 A JP S56116951A
Authority
JP
Japan
Prior art keywords
balls
rolling
ball
elastic body
coil springs
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.)
Pending
Application number
JP2043680A
Other languages
Japanese (ja)
Inventor
Jiro Hirata
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.)
NSK Ltd
Original Assignee
NSK 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 NSK Ltd filed Critical NSK Ltd
Priority to JP2043680A priority Critical patent/JPS56116951A/en
Publication of JPS56116951A publication Critical patent/JPS56116951A/en
Pending legal-status Critical Current

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
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/37—Loose spacing bodies
    • 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
    • F16C19/20—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows with loose spacing bodies, e.g. balls, between the bearing 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
    • 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
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
    • F16H25/2233—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with cages or means to hold the balls in position
    • F16H25/2238—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls with cages or means to hold the balls in position using ball spacers, i.e. spacers separating the balls, e.g. by forming a chain supporting the balls

Landscapes

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

Abstract

PURPOSE: To permit smooth rolling of balls by allowing a weak elastic body to be interposed between balls so that a large compressive force not to act between balls when the balls which support loads shift in rolling.
CONSTITUTION: Between a screw shaft 1 and the both spiral grooves 2 and 4 of a ball nut 3, the balls 5 which are inserted in the spiral grooves 2 and 4 and rolls freely, compression coil springs 6 which separate the balls 5 each other, and the annular bodies 7 which are freely inserted onto the outside of the compression coil springs 6 are arranged. As the balls which shift in rolling are separated each other by the elastic body 6, the resistance which suppresses the rolling of the ball 5 is hardly varied, even if a little unevenness of the revolution speed of the ball 5 on its axis of the ball 5 which shifts in rolling is generated.
COPYRIGHT: (C)1981,JPO&Japio
JP2043680A 1980-02-22 1980-02-22 Ball screw Pending JPS56116951A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2043680A JPS56116951A (en) 1980-02-22 1980-02-22 Ball screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2043680A JPS56116951A (en) 1980-02-22 1980-02-22 Ball screw

Publications (1)

Publication Number Publication Date
JPS56116951A true JPS56116951A (en) 1981-09-14

Family

ID=12026982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2043680A Pending JPS56116951A (en) 1980-02-22 1980-02-22 Ball screw

Country Status (1)

Country Link
JP (1) JPS56116951A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0930450A1 (en) * 1997-07-31 1999-07-21 Thk Co., Ltd. Ball screw device
US6347558B1 (en) 1998-06-02 2002-02-19 Nsk Ltd. Ball screw device and linear motion device
EP1279866A2 (en) * 2001-07-17 2003-01-29 Nsk Ltd Ball screw
DE19925040B4 (en) * 1998-06-02 2004-09-16 Nsk Ltd. Ball screw device and linear offset device
JP2006329433A (en) * 1998-06-02 2006-12-07 Nsk Ltd Ball screw device and linear motion device
US7263908B2 (en) 2002-12-18 2007-09-04 Ina-Schaeffler Kg Ball screw

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0930450A1 (en) * 1997-07-31 1999-07-21 Thk Co., Ltd. Ball screw device
EP0930450A4 (en) * 1997-07-31 2001-01-31 Thk Co Ltd Ball screw device
US6347558B1 (en) 1998-06-02 2002-02-19 Nsk Ltd. Ball screw device and linear motion device
DE19925040B4 (en) * 1998-06-02 2004-09-16 Nsk Ltd. Ball screw device and linear offset device
US6805019B2 (en) 1998-06-02 2004-10-19 Nsk Ltd. Ball screw device and linear motion device
JP2006329433A (en) * 1998-06-02 2006-12-07 Nsk Ltd Ball screw device and linear motion device
US7146869B2 (en) 1998-06-02 2006-12-12 Nsk Ltd. Ball screw device and linear motion device
US7159481B2 (en) 1998-06-02 2007-01-09 Nsk Ltd. Ball screw device and linear motion device
DE19925040C5 (en) * 1998-06-02 2009-01-29 Nsk Ltd. Ball screw device and Linearversatzeinrichtung
EP1279866A2 (en) * 2001-07-17 2003-01-29 Nsk Ltd Ball screw
EP1279866A3 (en) * 2001-07-17 2009-03-18 Nsk Ltd Ball screw
US7263908B2 (en) 2002-12-18 2007-09-04 Ina-Schaeffler Kg Ball screw

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