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GB1236572A - Screw and half nut mechanisms - Google Patents

Screw and half nut mechanisms

Info

Publication number
GB1236572A
GB1236572A GB3248067A GB3248067A GB1236572A GB 1236572 A GB1236572 A GB 1236572A GB 3248067 A GB3248067 A GB 3248067A GB 3248067 A GB3248067 A GB 3248067A GB 1236572 A GB1236572 A GB 1236572A
Authority
GB
United Kingdom
Prior art keywords
screw
nut
under pressure
bores
gallery
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
Application number
GB3248067A
Inventor
William Henry Feran
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.)
George Richards and Co Ltd
Original Assignee
George Richards and 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 George Richards and Co Ltd filed Critical George Richards and Co Ltd
Priority to GB3248067A priority Critical patent/GB1236572A/en
Publication of GB1236572A publication Critical patent/GB1236572A/en
Expired 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps; Pressure control
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0498—Worm gearings

Landscapes

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

Abstract

1,236,572. Screw - and - nut mechanism. GEORGE RICHARDS & CO. Ltd. 12 July, 1968 [14 July, 1967], No. 32480/67. Heading F2Q. In a screw and half-nut mechanism, lubricant under pressure is supplied to the side faces of some of the threads through valve means operated by the rotation of the screw so that only those openings which are covered by the nut face receive lubricant. As shown, a screw is in two parts 2, 4 which are urged apart by fluid under pressure to compensate for inaccuracies of the pitch of the nut or rack. The screw is rotatably mounted in bearings 5 in frame 11, and rotates relatively to a fixed pintle 3 which is connected to a source 12 of pressurized lubricating oil through restrictors 8, 9. The pintle 3 has a gallery 17 associated with each nut part and this gallery 17 co-operates with radial bores 14 to supply oil under pressure to bores 10 in the faces of the screw only when the bores 10 are in contact with a nut 13. Arcuate pockets 16 are provided in the surfaces of the nut teeth. Alternatively, the valve means may comprise co-operating valve ports which could be provided between an end face 21 of the screw and a co-operating fixed end plate.
GB3248067A 1967-07-14 1967-07-14 Screw and half nut mechanisms Expired GB1236572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3248067A GB1236572A (en) 1967-07-14 1967-07-14 Screw and half nut mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3248067A GB1236572A (en) 1967-07-14 1967-07-14 Screw and half nut mechanisms

Publications (1)

Publication Number Publication Date
GB1236572A true GB1236572A (en) 1971-06-23

Family

ID=10339227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3248067A Expired GB1236572A (en) 1967-07-14 1967-07-14 Screw and half nut mechanisms

Country Status (1)

Country Link
GB (1) GB1236572A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092331A1 (en) * 1982-03-30 1983-10-26 Shuton, S.A. Ball-screw rack device
CN111609104A (en) * 2020-05-29 2020-09-01 嘉兴固达金属科技股份有限公司 Lubricating and oiling structure of screw

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092331A1 (en) * 1982-03-30 1983-10-26 Shuton, S.A. Ball-screw rack device
CN111609104A (en) * 2020-05-29 2020-09-01 嘉兴固达金属科技股份有限公司 Lubricating and oiling structure of screw
CN111609104B (en) * 2020-05-29 2021-09-03 嘉兴固达金属科技股份有限公司 Lubricating and oiling structure of screw

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