WO1996007839A1 - Mecanisme d'entrainement lineaire ou rotatif - Google Patents

Mecanisme d'entrainement lineaire ou rotatif Download PDF

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Publication number
WO1996007839A1
WO1996007839A1 PCT/DE1995/001154 DE9501154W WO9607839A1 WO 1996007839 A1 WO1996007839 A1 WO 1996007839A1 DE 9501154 W DE9501154 W DE 9501154W WO 9607839 A1 WO9607839 A1 WO 9607839A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
elements
linear
drive
rotary drive
Prior art date
Application number
PCT/DE1995/001154
Other languages
German (de)
English (en)
Inventor
Edmund Linzenkirchner
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1996007839A1 publication Critical patent/WO1996007839A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/105—Cycloid or wobble motors; Harmonic traction motors
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/326—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising a carrier with linear guiding means guiding at least one orbital gear

Definitions

  • the invention relates to a linear or rotary drive, i. H. a drive with which a pushing force can be generated on a push rod or a torque can be generated on an output shaft.
  • Such a linear or rotary drive is known from DE-PS 39 30 064.
  • the rotary drive there essentially consists of a cam, axially displaceable drive elements and an output element.
  • the cam disk and the driven element which is designed as a gearwheel with teeth running radially in the peripheral region, are arranged coaxially with one another.
  • the drive elements which have drive teeth with a pitch offset with respect to the driven teeth of the driven element.
  • the drive elements are guided axially and are moved by the cam.
  • the axial movement of the drive tooth causes a continuous displacement of the driven teeth of the driven element and thus a rotational movement by alternating at least one drive element with an oblique sliding surface of the driving tooth into a correspondingly designed oblique sliding surface of an driven tooth engages the Abtrieb ⁇ elements.
  • the driven element is designed as a linearly displaceable toothed rack, over the driven teeth of which the drive teeth of the drive elements displaceable perpendicular to the toothed rack are located, which in turn are themselves set in radial motion by a camshaft lying parallel to the toothed rack.
  • the invention has for its object to provide a linear or rotary drive that is simple and requires only a few moving parts.
  • FIG. 1 shows the functional principle of a drive according to the invention
  • FIG. 2 shows a drive with elements of variable length on the outer gear
  • FIG. 3 shows a drive with elements of variable length on the inner gear
  • FIG. 4 shows a sectional view through a drive according to FIG. 3.
  • the drive essentially consists of an internally toothed gear 1, within which a spur gear 2 is located.
  • the tooth pitch should be the same for both gears 1 and 2.
  • the teeth are symbolically represented as serrations in the drawing.
  • the gear 1 has 20 teeth, while only 19 teeth are arranged on the circumference of the gear 2.
  • the gear 1 is rotatably mounted, the gear 2, however, is not rotatable, but can be displaced within the gear 1 so that it can be Nes circumference can engage teeth of the gear 1.
  • the gear 2 In order to generate a rotational movement of the gear 1, the gear 2 is displaced on a circular path, so that its center 3 moves according to arrow 4 around the center 5 of the gear 1.
  • the gear 1 With a complete circular movement of the gear 2, the gear 1 is rotated by the difference in the number of teeth, in this example just one tooth, in the direction of arrow 6. Since no pitch offset is required in this arrangement, the two gears 1 and 2 roll on each other with little wear and tear, without causing major frictional losses. Since all drive elements lie on one level, this drive can also be manufactured in micro-mechanics.
  • the toothed wheels can be provided with straight teeth, helical teeth or arrow teeth.
  • FIG. 2 shows a complete drive with elements 7, 8, 9 and 10 variable in length. These are mounted on a housing 11 and act on an internally toothed gear wheel 12, the teeth of which are indicated by a tip circle 13 and a root circle 14. The teeth of the gearwheel 12 engage with teeth of a gearwheel 15 which lies within the gearwheel 12 and whose teeth have a tip circle 16 and a root circle 17.
  • the length-variable elements 7, 8, 9 and 10 are influenced in the course of time in such a way that they assume their longest position in this order one after the other, the internally toothed gear 12, which is displaceable but not rotatable, rolls once on the Gear 15, which in the meantime rotates counterclockwise by the radian 2 * ⁇ * n / N, where n is the difference in the number of teeth of the two gears and N is the number of teeth of the gear 15.
  • the direction of rotation can be changed by changing the time course of the length changes in the elements 7 ... 10 variable in length.
  • elements 18, 19, 20 and 21 variable in length can also be attached centrally in a drive housing 22.
  • a bigger, toothed gear 23 is firmly connected to an output shaft 24 which is rotatably mounted relative to the housing 22.
  • the inner, externally toothed gear 25, is secured to the housing 22, for example, with pins, not shown in the drawing, in such a way that it can move radially to the axis of symmetry of the housing 22, but cannot be rotated.
  • variable-length elements force-exerting elements, for example electromagnets, can also be used.
  • the drive described is self-locking, ie. that is, at least one pair of teeth is in mesh at any point in time, and a retroactive moment does not cause any rotational movement. If auxiliary power is available, only one of the elements that can be changed in length must be activated at a standstill to ensure self-locking.
  • the exemplary embodiments described above are rotary actuators.
  • a linear drive is obtained from these rotary drives by providing the gearwheels with helical teeth and replacing the rotatably mounted gearwheel with a gearwheel that is protected against rotation and can be displaced axially.
  • the gearwheel mounted in this way executes a longitudinal movement.
  • Drives according to the invention are advantageously suitable for low speeds and - with high force of the elements variable in length - for high torque.
  • they can be used for actuators.
  • the same basic structure is then, for example, electrical, pneumatic or hydraulic actuators.
  • very small motors for example in micromechanics, can also be manufactured.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Vehicle Body Suspensions (AREA)
  • Transmission Devices (AREA)

Abstract

Un mécanisme d'entraînement linéaire ou rotatif comprend une roue (1) à denture intérieure et une roue (2) à denture extérieure montée à l'intérieur de la roue (1) à denture intérieure de façon à coopérer avec celle-ci. La roue à denture extérieure (2) a un nombre de dents inférieur à celui de la roue (1) à denture intérieure. Des éléments exercent une force sensiblement radiale sur une des deux roues (1; 2), qui elle est radialement mobile par rapport à l'autre roue (2; 1), de sorte que le centre de l'axe d'une des roues (1; 2) se déplace autour du centre de l'axe de l'autre roue (2; 1). Une des roues roule ainsi sur l'autre roue qui, lorsqu'elle est pourvue d'une denture hélicoïdale, est mise en rotation ou longitudinalement déplacée selon le type de palier. L'invention a des applications dans les servomoteurs.
PCT/DE1995/001154 1994-09-08 1995-08-29 Mecanisme d'entrainement lineaire ou rotatif WO1996007839A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9414601.2U 1994-09-08
DE9414601U DE9414601U1 (de) 1994-09-08 1994-09-08 Linear- oder Drehantrieb

Publications (1)

Publication Number Publication Date
WO1996007839A1 true WO1996007839A1 (fr) 1996-03-14

Family

ID=6913460

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/001154 WO1996007839A1 (fr) 1994-09-08 1995-08-29 Mecanisme d'entrainement lineaire ou rotatif

Country Status (2)

Country Link
DE (1) DE9414601U1 (fr)
WO (1) WO1996007839A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008009576A1 (fr) * 2006-07-17 2008-01-24 Siemens Aktiengesellschaft Moteur électromécanique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045293B4 (de) * 2006-09-26 2012-03-29 Noliac A/S Festkörperaktor-Antriebsvorrichtung
ITVI20120176A1 (it) * 2012-07-18 2014-01-19 Paolo Bonfiglio Motore rotativo a coppia migliorata

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2009605A1 (de) * 1969-03-17 1970-09-24 Bowman, Spencer, Lakewood, Ohio (V.St.A.) Antriebsmaschine, insbesondere Hydraulikmotor
US4074615A (en) * 1976-10-07 1978-02-21 Caterpillar Tractor Co. Orbiting motor gear drive
JPH0622477A (ja) * 1991-03-01 1994-01-28 Semiconductor Energy Lab Co Ltd 慣性式エネルギー貯蔵装置
JPH06339478A (ja) * 1993-04-05 1994-12-13 Ishikawa Seisakusho Ltd 超音波による骨粗しょう症の評価方法およびその装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2009605A1 (de) * 1969-03-17 1970-09-24 Bowman, Spencer, Lakewood, Ohio (V.St.A.) Antriebsmaschine, insbesondere Hydraulikmotor
US4074615A (en) * 1976-10-07 1978-02-21 Caterpillar Tractor Co. Orbiting motor gear drive
JPH0622477A (ja) * 1991-03-01 1994-01-28 Semiconductor Energy Lab Co Ltd 慣性式エネルギー貯蔵装置
JPH06339478A (ja) * 1993-04-05 1994-12-13 Ishikawa Seisakusho Ltd 超音波による骨粗しょう症の評価方法およびその装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 254 (E - 634) 16 July 1988 (1988-07-16) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 140 (E - 321) 14 June 1985 (1985-06-14) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008009576A1 (fr) * 2006-07-17 2008-01-24 Siemens Aktiengesellschaft Moteur électromécanique

Also Published As

Publication number Publication date
DE9414601U1 (de) 1995-10-19

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