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WO1989008003A1 - Dispositif de positionnement rotatif - Google Patents

Dispositif de positionnement rotatif Download PDF

Info

Publication number
WO1989008003A1
WO1989008003A1 PCT/SE1989/000059 SE8900059W WO8908003A1 WO 1989008003 A1 WO1989008003 A1 WO 1989008003A1 SE 8900059 W SE8900059 W SE 8900059W WO 8908003 A1 WO8908003 A1 WO 8908003A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier plate
support member
rotational
annular
slide elements
Prior art date
Application number
PCT/SE1989/000059
Other languages
English (en)
Inventor
Måns G. Th. MANNERFELT
Original Assignee
Mannerfelt Maans G Th
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 Mannerfelt Maans G Th filed Critical Mannerfelt Maans G Th
Publication of WO1989008003A1 publication Critical patent/WO1989008003A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/58—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
    • B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair

Definitions

  • the invention relates to a device for controlled rotational positioning of a carrier plate rotatably mounted on a support member, the device being used e . g . in a rotary feeder or a rotatable rotor frame, a drive motor being connected to a rotational drive means acting between the carrier plate and the support member, in accordance with the preamble to claim 1.
  • the rotatable mounting is normally achieved with the aid of roller bearings which have the advantage of low friction and, also, long life.
  • a gear transmission as rotational drive means.
  • such an arrangement involves certain disadvantages since an exact rotational positioning is impeded by the carrier plate and associated equipment having an angular momentum, which give raise to an uncontrollable, continued rotational movement when the drive motor is stopped, and the final rotational position will be indeterminate.
  • a gear transmission gives rise to positioning errors due to the necessary backlash between meshing teeth.
  • the object of the present invention is to provide, against this background, an improved rotational positioning device which enables exact, repeatable rotational positionings, even when the carrier plate with asscociated euqipment has a considerable mass, and consequently a large angular momentum.
  • the carrier plate being mounted in sliding bearings on the support member and that the rotational drive means includes an endless drive belt, as disclosed in claim 1.
  • the sliding bearings permit a certain friction between the carrier plate and the support member, although this friction is relatively low.
  • the carrier plate can be rotationally set to an exact desired position, with a suitable common adjustment of the mentioned friction, the weight of the carrier plate and associated equipment and the rotational speed achieved by the motor and rotational drive means.
  • the sliding friction namely enables a very short and controllable breaking distance.
  • the endless drive belt also gives a no-play and exact movement translation between drive motor and the carrier plate.
  • Fig. 1 schematically illustrates in a central cross-section, to a certain extent exploded, the parts included in a rotational positioning device in accordance with the invention
  • Fig. 2 is a view from above of an annular member with circularly distributed slide elements included in the rotational positioning device according to Fig. 1 ,
  • Fig. 3 is a view from above seen according to the arrows
  • Fig. 4 is a central section through the rotational positioning device according to Fig. 3.
  • the device illustrated on the drawing is placed on a rigid foundation 1, e.g. a floor, on which a support member in the form of a circular support plate 2 is mounted on feet 3 screwed to the floor such that the plate 2 can be kept in a desired, suitably horizontal position with the aid of adjusting screws 4 in the feet 3.
  • a central, circular hole 5 (Fig. 1)
  • a holding collar 6 concentric with, and somewhat spaced from the hole edge 5a, the holding collar 6, accommodating a sliding bearing means 7 for an upper, rotatable carrier plate 8.
  • the latter is similarly circular and provided with a central hole 9, defined by an integral, downwardly projecting collar 10.
  • the carrier plate 8 is assumed to the be included in a rotatable apparatus or machine, e.g. a rotary feeder, a mechanical handling apparatus or an industrial robot, for which it is essential that exact and repeatable rotational positionings can be achieved.
  • the sliding bearing means 7 includes an annular member 11, which is non rotatably attached to the holding collar 6 of the support plate 2 and provided with inernal conical surfaces 11a, lib facing upwards and downwards, respectively.
  • a plurality of cylindrical slide elements 12a are inserted with a press fit in corresponding bored blind holes in the upper conical surface 11a (see Fig. 2). These circularly distributed slide elements 12a engage against the collar 10 of the carrier plate 8, the lower part of which is bevelled to a supplementary conical surface 10a (Fig. 1).
  • the carrier plate 8 is kept in a stable position with the aid of a radially internally arranged and vertically oriented sleeve 13, which extends through the central holes 5 and 9 of the support plate 2 and carrier plate 8, the upper part of the sleeve 13 being threaded into the collar 10 of the plate 8, while its lower part has a radially extending external flange 13a with a sloping, upwardly facing conical surface 13b.
  • Circumferentially distributed, cylindrical slide elements 12b are inserted in bored blind holes on this conical surface 13b, similarly to the as the slide elements 12a in the conical surface 11a, so that both pairs of opposing conical surfaces 10a, 11a and lib, 13b are kept fixed in relation to each other by the intermediary action of both slide element arrays 12a, 12b.
  • the slide elements 12a and 12b suitably comprise a thermoplastics material, which is relatively stiff and has low friction against the opposing conical surfaces.
  • a suitable material is polyamide, preferably with an addition of a lubricant, such as an oil molecule composition.
  • the rotational drive of the carrier plate 8 relative the support plate 2 is achieved with the aid of a servo-controlled electric motor 14 which is adjustably attached to the upper side of the plate 8.
  • the motor 14 has a right-angled drive 15 with a pinion 16, which is in mesh with an endless toothed belt 17, which is kept tensioned round the pinion 16 and an exteriorly toothed ring 18 on the holding collar 6, such as to rotate the carrier plate 8 when the motor is activated.
  • a closed annular slide ring can be used, e.g. placed in an annular groove. If it is found suitable, one array of slide elements can be replaced by a roller bearing. In certain cases it may be sufficient to arrange a single (upper) array of slide elements, or a single slide ring, e.g. if the carrier plate 8 has a large diameter in relation to the dimensions of the equipment it carries, and the mounting will thus be stable without axial (vertical) retention from below.
  • the electric motor can also be replaced by some other kind of motor, e.g. a fluid controlled drive unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Transmission Devices (AREA)
  • Support Of The Bearing (AREA)
  • Specific Conveyance Elements (AREA)

Abstract

On a mis au point un dispositif de positionnement rotatif commandé d'un disque entraîneur (8), monté rotatif sur un élément de support (2). On peut incorporer ledit dispositif par exemple dans un chargeur rotatif ou un cadre de rotor rotatif. Un moteur (14) est connecté à un moyen d'entraînement rotatif (15, 16, 17, 18) agissant entre le disque entraîneur et l'élément de support (2). Selon l'invention, le disque entraîneur (8) est monté sur des paliers à glissement sur l'élément de support (2), le moyen d'entraînement rotatif comprenant une boucle d'entraînement sans fin (17). Le palier à glissement comporte de préférence au moins un élément de coulisse annulaire ou au moins un réseau d'éléments de coulisses (12a, 12b) répartis de manière circonférentielle, par exemple en polyamide.
PCT/SE1989/000059 1988-02-26 1989-02-10 Dispositif de positionnement rotatif WO1989008003A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800677-0 1988-02-26
SE8800677A SE459562B (sv) 1988-02-26 1988-02-26 Vridinstaellningsanordning

Publications (1)

Publication Number Publication Date
WO1989008003A1 true WO1989008003A1 (fr) 1989-09-08

Family

ID=20371507

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000059 WO1989008003A1 (fr) 1988-02-26 1989-02-10 Dispositif de positionnement rotatif

Country Status (4)

Country Link
AU (1) AU3198289A (fr)
ES (1) ES2013061A6 (fr)
SE (1) SE459562B (fr)
WO (1) WO1989008003A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024270A1 (fr) * 1992-05-27 1993-12-09 Novo Nordisk A/S Table rotative avec plateau suiveur entraine par intermittence
DE29514343U1 (de) * 1995-09-07 1995-11-23 Expert Maschinenbau Gmbh, 64653 Lorsch Drehtisch mit Schrittantrieb
EP2027965A1 (fr) * 2007-08-23 2009-02-25 Alex-Tech Machinery Industrial Co. Ltd. Ensemble de table porte-pièce rotatif d'un appareil d'usinage
CN101941154A (zh) * 2010-10-14 2011-01-12 无锡立达齿轮制造有限公司 一种立式车床回转台
DE202013003544U1 (de) * 2013-04-16 2014-07-18 Brötje-Automation GmbH Bearbeitungsstation für Flugzeugstrukturbauteile

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062599A (en) * 1959-11-27 1962-11-06 Gen Electric Carbon bearings with molybdenum disulphide inserts
DE2249248A1 (de) * 1971-10-08 1973-04-12 Vandervell Products Ltd Lagerauskleidung und verfahren zu deren herstellung
SE408028B (sv) * 1975-06-25 1979-05-14 Bertheiez Cnmp Anordning for att vid en verktygsmaskin med cirkulert arbetsbord och en verktygshallarspindel bringa bordets och spindelns rotationsaxlar att sammanfalla
US4274773A (en) * 1978-05-03 1981-06-23 Ex-Cell-O Gmbh Rotary index table
GB2094904A (en) * 1981-03-18 1982-09-22 Torrington Co Past spherical bearing
GB2097486A (en) * 1981-04-20 1982-11-03 Kamatics Corp Bearings
NO850628L (no) * 1985-02-18 1986-08-19 Kjell Budal Boelgekraftverk med kraftkompenserende referanselegeme.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3062599A (en) * 1959-11-27 1962-11-06 Gen Electric Carbon bearings with molybdenum disulphide inserts
DE2249248A1 (de) * 1971-10-08 1973-04-12 Vandervell Products Ltd Lagerauskleidung und verfahren zu deren herstellung
SE408028B (sv) * 1975-06-25 1979-05-14 Bertheiez Cnmp Anordning for att vid en verktygsmaskin med cirkulert arbetsbord och en verktygshallarspindel bringa bordets och spindelns rotationsaxlar att sammanfalla
US4274773A (en) * 1978-05-03 1981-06-23 Ex-Cell-O Gmbh Rotary index table
GB2094904A (en) * 1981-03-18 1982-09-22 Torrington Co Past spherical bearing
GB2097486A (en) * 1981-04-20 1982-11-03 Kamatics Corp Bearings
NO850628L (no) * 1985-02-18 1986-08-19 Kjell Budal Boelgekraftverk med kraftkompenserende referanselegeme.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024270A1 (fr) * 1992-05-27 1993-12-09 Novo Nordisk A/S Table rotative avec plateau suiveur entraine par intermittence
DE29514343U1 (de) * 1995-09-07 1995-11-23 Expert Maschinenbau Gmbh, 64653 Lorsch Drehtisch mit Schrittantrieb
EP2027965A1 (fr) * 2007-08-23 2009-02-25 Alex-Tech Machinery Industrial Co. Ltd. Ensemble de table porte-pièce rotatif d'un appareil d'usinage
CN101941154A (zh) * 2010-10-14 2011-01-12 无锡立达齿轮制造有限公司 一种立式车床回转台
DE202013003544U1 (de) * 2013-04-16 2014-07-18 Brötje-Automation GmbH Bearbeitungsstation für Flugzeugstrukturbauteile
RU2617468C2 (ru) * 2013-04-16 2017-04-25 Брётье-Аутомацьён ГмбХ Станция для обработки конструктивных элементов воздушного судна

Also Published As

Publication number Publication date
AU3198289A (en) 1989-09-22
SE8800677D0 (sv) 1988-02-26
ES2013061A6 (es) 1990-04-16
SE459562B (sv) 1989-07-17

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