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FR2206825A5 - Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam - Google Patents

Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam

Info

Publication number
FR2206825A5
FR2206825A5 FR7240364A FR7240364A FR2206825A5 FR 2206825 A5 FR2206825 A5 FR 2206825A5 FR 7240364 A FR7240364 A FR 7240364A FR 7240364 A FR7240364 A FR 7240364A FR 2206825 A5 FR2206825 A5 FR 2206825A5
Authority
FR
France
Prior art keywords
shifter
pair
vacuum
electron beam
shaft
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
FR7240364A
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7240364A priority Critical patent/FR2206825A5/en
Application granted granted Critical
Publication of FR2206825A5 publication Critical patent/FR2206825A5/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/023—Means for mechanically adjusting components not otherwise provided for
    • 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
    • F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
    • 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
    • F16H2025/249—Special materials or coatings for screws or nuts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The shifter has a threaded shaft controlled from outside a vacuum chamber contg. the shifter and a nut and screw transmission box, with >=2 screws engaged on the shaft which turns in bearings, one of which constitutes a stop. The material of the nuts forms, with the material of the shaft, a pair of non-magnetic metals, or a pair without remanent magnetism, after demagnetisation, and with a very low mutual friction coeff. The stop is adjustable for wear. Pref. the pair of metals is stainless steel and non-ferrous alloy of Co, Cr and W; or stainless steel and Be bronze. The materials are surface-coated with PTFE.
FR7240364A 1972-11-14 1972-11-14 Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam Expired FR2206825A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7240364A FR2206825A5 (en) 1972-11-14 1972-11-14 Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7240364A FR2206825A5 (en) 1972-11-14 1972-11-14 Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam

Publications (1)

Publication Number Publication Date
FR2206825A5 true FR2206825A5 (en) 1974-06-07

Family

ID=9107150

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7240364A Expired FR2206825A5 (en) 1972-11-14 1972-11-14 Precision translational nut-and-screw shifter - for operation in vacuum in presence of electron beam

Country Status (1)

Country Link
FR (1) FR2206825A5 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089233A (en) * 1975-04-10 1978-05-16 Gebr. Marklin & Cie. Gmbh Automobile mirror
EP0603067A1 (en) * 1992-12-17 1994-06-22 AEROSPATIALE Société Nationale Industrielle Roller-screw-mechanism for a spacecraft and linear actuator comprising such mechanism
EP0552464B1 (en) * 1992-01-24 1995-08-09 Jürgen Zimmermann Screw actuator
WO2003076831A1 (en) * 2002-03-13 2003-09-18 Ina-Schaeffler Kg Threaded drive element for a rolling body
CN104141758A (en) * 2014-07-14 2014-11-12 沈阳化工大学 Device capable of regulating and controlling axial pre-tightening force of screw rod
FR3021086A1 (en) * 2014-05-15 2015-11-20 Skf Ab SCREW MECHANISM

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089233A (en) * 1975-04-10 1978-05-16 Gebr. Marklin & Cie. Gmbh Automobile mirror
EP0552464B1 (en) * 1992-01-24 1995-08-09 Jürgen Zimmermann Screw actuator
AT400881B (en) * 1992-01-24 1996-04-25 Zimmermann Juergen SPINDLE LIFT GEARBOX
EP0603067A1 (en) * 1992-12-17 1994-06-22 AEROSPATIALE Société Nationale Industrielle Roller-screw-mechanism for a spacecraft and linear actuator comprising such mechanism
FR2699633A1 (en) * 1992-12-17 1994-06-24 Aerospatiale Roller screw mechanism, in particular for spacecraft, and linear actuator comprising such a mechanism.
WO2003076831A1 (en) * 2002-03-13 2003-09-18 Ina-Schaeffler Kg Threaded drive element for a rolling body
FR3021086A1 (en) * 2014-05-15 2015-11-20 Skf Ab SCREW MECHANISM
CN104141758A (en) * 2014-07-14 2014-11-12 沈阳化工大学 Device capable of regulating and controlling axial pre-tightening force of screw rod

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Legal Events

Date Code Title Description
ST Notification of lapse