EP0218015A1 - Production method of an internal-axis rotary piston machine - Google Patents

Production method of an internal-axis rotary piston machine Download PDF

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Publication number
EP0218015A1
EP0218015A1 EP86109610A EP86109610A EP0218015A1 EP 0218015 A1 EP0218015 A1 EP 0218015A1 EP 86109610 A EP86109610 A EP 86109610A EP 86109610 A EP86109610 A EP 86109610A EP 0218015 A1 EP0218015 A1 EP 0218015A1
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EP
European Patent Office
Prior art keywords
parts
outer rotor
engaging
rotor
mounting body
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Granted
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EP86109610A
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German (de)
French (fr)
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EP0218015B1 (en
Inventor
Otto Kraic
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F01C1/103—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y10T29/49234—Rotary or radial engine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53961—Means to assemble or disassemble with work-holder for assembly

Definitions

  • the invention relates to a method for producing an inner-axis rotary piston machine according to the preamble of claim 1 and to a rotary piston machine produced by the method according to the invention.
  • Deviations from the ideal kinematic shape result in the production of the curvature of the engagement surfaces of the two runners and in the mutual assignment of the engagement parts of the outer rotor in the tangential and radial directions and in the assembly of the runners relative to one another and relative to the enclosing housing. Since the different deviations at certain sealing areas can add up, wide sealing gaps must be provided that take into account the added maximum manufacturing and assembly tolerances in order to prevent contact at the sealing points. The consequently wide sealing gaps of rotary lobe machines, which have been manufactured in the usual way, cause poor efficiency of the machine due to sealing losses.
  • the rotary lobe machines that have become known from the specialist literature are not suitable for series production due to the complex and inaccurate manufacturing processes langt or they were only intended for the throughput of liquid media and operated at suitable relatively low speeds.
  • the US-PS 1 753 476 shows an embodiment of a known rotary piston machine, in which geometrically simple, but kinematically imprecise engagement surfaces with consequently wide sealing gaps have been accepted to simplify the manufacture, so that it is only suitable for the conveyance of relatively viscous media .
  • Your external rotor is made in one piece, its engagement parts being held on one side only on a rotor side part and consequently can only be loaded by small centrifugal forces, or can only have a short axial extension.
  • the invention has for its object to find a method by which a rotary engine of the type mentioned in the preamble more precisely, i.e. with narrower dimensioned sealing gaps, can be manufactured and is therefore suitable for gas production with good efficiency and high rotational speeds.
  • This object is achieved on the basis of the features of patent claim 1.
  • Advantageous embodiments of the method and a rotary piston machine produced by the method are the subject of the dependent patent claims.
  • the machine shown has a speed ratio between the outer rotor 2 and the inner rotor 3 of 2: 3, so that three engagement parts 2a, 2b, 2c are provided on the outer rotor and two engagement parts 3a, 3b on the inner rotor 3.
  • the machine housing 1 has an inlet channel 4 and an outlet channel 5 on its circumference, which are sealed off from one another by the passage close to the sealing gap on the outer peripheral surface 7 of the engagement parts 2a, 2b, 2c along the inner surface 8 of the housing.
  • the runners 2, 3 are supported by roller bearings 10, 11 which are supported on side plates 12, 13 of the housing 1. Due to the distance a between the geometrical axes 14, 15, the inner roller bearing 11 of the inner rotor 3 has a radially offset position within the surrounding outer roller bearing 10 of the outer rotor 2.
  • the outer rotor 2 17, 18 hubs are on the side parts thereof 19,20 formed, which include the roller bearings 10.
  • part of one of these hubs 20 forms a hollow gear 21, with which a spur gear 22 meshes, which is placed on the shaft 23 of the inner rotor 3.
  • the side parts 17, 18 of the external rotor 2 connect its three engagement parts 2a, 2b, 2c to one another and, together with a sealing body 25, 26 firmly connected to the housing side plates 12, 13, seal the working spaces 9 of the machine in the axial direction.
  • these side parts 17, 18 of the outer rotor 2 have the form of circular rings, each of which has a radial seal 27, 28 radially outside and radially inside.
  • the method according to the invention shows a way in which a precise positioning of the engaging parts 2a, 2b, 2c of the outer rotor 2 with respect to the minimum sealing gap widths is possible relative to the side parts 17, 18 of the outer rotor 2, which determine the position relative to the machine housing 1 via their mounting .
  • the engagement parts 2a, 2b, 2c or 2a ', 2b', 2c ' are positioned relative to the side parts 17, 18 of the external rotor by means of mounting bodies 35 - which engage between the engagement parts. 37 and the abutment of their outer peripheral surfaces 7 on outer circular arc pieces 38-40.
  • the design of these assembly bodies 35-37 and the assembly circle pieces 38-40 as precision parts results in very precise positioning, without significant dimensional deviations between a large number of mass-produced external rotors. According to the exemplary embodiment in FIG.
  • one of the mounting bodies 36 " can be adjusted in width by means of an inserted sliding wedge 42, so that after insertion between the engagement parts 2a" and 2c "the corner areas thereof can be covered with lateral extensions 43,44.
  • all of the mounting bodies 35 "-37” can also be designed to vary in width.
  • the mounting bodies 35'-37 'of the exemplary embodiment in FIG. 5 are provided with cutouts 48 on their end faces, so that lateral extensions 49, 50 are present which, despite the inner rotor 3 already inserted, make the mounting contact on a substantial area of the inner surfaces 30, 31 of the Engaging parts 2a ', 2b', 2c 'enable by engaging the engaging parts 3a, 3b of the inner rotor 3 between them.
  • By mounting the engaging parts 2a ', 2b', 2c 'on the screen Tent parts 17, 18 when the inner rotor 3 is already inserted, which is fixed in position relative to the side parts 17, 18 of the outer rotor 2 (FIG.
  • the engagement parts 2a ', 2b', 2c 'can also can be mounted exactly relative to the inner rotor 3. It is also possible to carry out the assembly or alignment of the engagement parts in the case of already mounted roller bearings 10, 11 and attached housing side plates 12, 13, the engagement parts 2 a ', 2b', 2c 'being fastened, for example, by welds which are made on the outer circumference of the outer rotor 2 be provided.
  • the fixed connection between the engaging parts 2a, 2b, 2c and the side parts 17, 18 and 17 ', 18' can be made by conventional connecting means, such as adhesives, weld seams, screws 58, 59; 60, 61, 62 and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The engagement parts of the external rotor of a single-rotation machine having an internal axis with sealing between its rotors and with respect to the machine casing by sealing gaps, are manufactured as single parts and following reciprocal alignment are joined at their two ends to in each case one circular side part. Alignment takes place by engaging the cross-sectionally arcuate outer faces of the engagement parts on arcuate parts of an assembly cage and by dimensionally accurate assembly bodies engaging between the engagement parts. The method permits narrower sealing gaps for the machine and consequently an improved efficiency.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer innenachsigen Drehkolbenmaschine gemäss dem Oberbegriff des Patentanspruchs 1 sowie eine nach dem erfindungsgemässen Ver­fahren hergestellte Drehkolbenmaschine.The invention relates to a method for producing an inner-axis rotary piston machine according to the preamble of claim 1 and to a rotary piston machine produced by the method according to the invention.

Innenachsige Drehkolbenmaschinen, bei denen die Abdichtung nicht durch Dichtleisten erfolgt, haben den Vorteil kleiner Reibungsverluste an den Dichtstellen, da die Abdichtung be­rührungslos durch dichtspaltbildende Annäherung der sich an­einander bewegenden Teile erfolgt. Folglich sind solche Drehkolbenmaschinen an sich für hohe Drehgeschwindigkeiten geeignet, um sie bei kompakter Bauweise z.B. als Lader einer Verbrennungskraftmaschine einzusetzen. Die Fertigungsgenau­igkeit bekannter Herstellungsverfahren ist jedoch nicht aus­reichend um eine gute Abdichtung durch enge Dichtspalte zu erhalten. Abweichungen von der kinematisch idealen Form er­geben sich bei der Herstellung der Krümmung der Eingriffs­flächen beider Läufer und bei der gegenseitigen Zuordnung der Eingriffsteile des Aussenläufers in tangentialer und ra­dialer Richtung sowie bei der Montage der Läufer relativ zu­einander und relativ zum umschliessenden Gehäuse. Da sich die verschiedenen Abweichungen an bestimmten Dichtbereichen addieren können, müssen weite Dichtspalte vorgesehen werden, die die addierten maximalen Fertigungs- und Montagetoleran­zen berücksichtigen, um einen Kontakt an den Dichtstellen zu verhindern. Die folglich weiten Dichtspalte von Drehkol­benmaschinen, die auf übliche Weise hergestellt worden sind, bewirken durch Dichtverluste einen schlechten Wirkungsgrad der Maschine. Die durch die Fachliteratur bekanntgewordenen Drehkolbenmaschinen sind aufgrund der aufwendigen und unge­nauen Herstellungsverfahren nicht in die Serienfertigung ge­ langt oder sie wurden nur für den Durchsatz von flüssigen Medien vorgesehen und bei hierfür geeigneten verhältnismä­ssig niedrigen Drehgeschwindigkeiten betrieben. Die US-PS 1 753 476 zeigt ein Ausführungsbeispiel einer bekannten Drehkolbenmaschine, bei der zur Vereinfachung der Herstel­lung geometrisch einfache, jedoch kinematisch ungenaue Ein­griffsflächen mit folglich weiten Dichtspalten in Kauf ge­nommen worden sind, so dass sie nur für die Förderung von verhältnismässig viskosen Medien geeignet ist. Ihr Aussen­läufer ist in einem Stück gefertigt, wobei seine Eingriffs­teile nur einseitig an einem Läuferseitenteil gehalten sind und folglich nur durch geringe Zentrifugalkräfte belastbar sind, bzw. nur eine kurze axiale Ausdehnung aufweisen können.Internal-axis rotary lobe machines, in which the sealing is not carried out by sealing strips, have the advantage of small friction losses at the sealing points, since the sealing takes place without contact by the sealing gap-forming approach of the moving parts. Consequently, such rotary lobe machines are in themselves suitable for high speeds of rotation in order to use them in a compact design, for example as a supercharger of an internal combustion engine. However, the manufacturing accuracy of known manufacturing processes is not sufficient to obtain a good seal through narrow sealing gaps. Deviations from the ideal kinematic shape result in the production of the curvature of the engagement surfaces of the two runners and in the mutual assignment of the engagement parts of the outer rotor in the tangential and radial directions and in the assembly of the runners relative to one another and relative to the enclosing housing. Since the different deviations at certain sealing areas can add up, wide sealing gaps must be provided that take into account the added maximum manufacturing and assembly tolerances in order to prevent contact at the sealing points. The consequently wide sealing gaps of rotary lobe machines, which have been manufactured in the usual way, cause poor efficiency of the machine due to sealing losses. The rotary lobe machines that have become known from the specialist literature are not suitable for series production due to the complex and inaccurate manufacturing processes langt or they were only intended for the throughput of liquid media and operated at suitable relatively low speeds. The US-PS 1 753 476 shows an embodiment of a known rotary piston machine, in which geometrically simple, but kinematically imprecise engagement surfaces with consequently wide sealing gaps have been accepted to simplify the manufacture, so that it is only suitable for the conveyance of relatively viscous media . Your external rotor is made in one piece, its engagement parts being held on one side only on a rotor side part and consequently can only be loaded by small centrifugal forces, or can only have a short axial extension.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu finden, durch das eine Drehkolbenmaschine der im Oberbegriff genannten Art genauer, d.h. mit enger dimensionierten Dicht­spalten, herstellbar ist und somit bei gutem Wirkungsgrad mit hohen Drehgeschwindigkeiten für die Gasförderung geeig­net ist. Die Lösung dieser Aufgabe erfolgt aufgrund der Merkmale des Patentanspruchs 1. Vorteilhafte Ausführungsfor­men des Verfahrens sowie eine nach dem Verfahren hergestell­te Drehkolbenmaschine sind Gegenstand der abhängigen Patent­ansprüche.The invention has for its object to find a method by which a rotary engine of the type mentioned in the preamble more precisely, i.e. with narrower dimensioned sealing gaps, can be manufactured and is therefore suitable for gas production with good efficiency and high rotational speeds. This object is achieved on the basis of the features of patent claim 1. Advantageous embodiments of the method and a rotary piston machine produced by the method are the subject of the dependent patent claims.

Im folgenden wird die Erfindung anhand der Zeichnungen nä­her erläutert. Es zeigen:

  • Fig.1 und 2 einen Axial- und Radialschnitt durch eine Aus­führungsform einer Drehkolbenmaschine,
  • Fig.3 und 4 einen Axial- und Radialschnitt durch einen durch Montageteile gehaltenen Aussenläufer,
  • Fig.5 eine durch Montageteile gehaltene Anordnung eines Aussenläufers mit eingeschlossenem Innen­läufer,
  • Fig.6 eine Montageanordnung für eine weitere Ausfüh­rungsform einer Drehkolbenmaschine,
  • Fig.7 einen Axialschnitt durch eine andere Ausfüh­rungsform eines Aussenläufers und
  • Fig.8 eine Ansicht eines Tragringes des Aussenläufers nach Fig.7.
The invention is explained in more detail below with reference to the drawings. Show it:
  • 1 and 2 an axial and radial section through an embodiment of a rotary piston machine,
  • 3 and 4 an axial and radial section through an outer rotor held by assembly parts,
  • 5 shows an arrangement of an outer rotor with enclosed inner rotor, held by assembly parts,
  • 6 shows an assembly arrangement for a further embodiment of a rotary piston machine,
  • 7 shows an axial section through another embodiment of an external rotor and
  • 8 shows a view of a support ring of the external rotor according to FIG. 7.

In Fig.1 und 2 ist ein Typ einer innenachsigen Drehkolben­maschine dargestellt, der in der nicht vorveröffentlichten DE-A- 3 432 915 des gleichen Anmelders näher beschrieben ist. Andere Ausführungsformen sind in der Literatur viel­fach beschrieben. Der prinzipielle Aufbau und andere Aus­führungsformen lassen sich beispielsweise dem Buch "Eintei­lung der Rotationskolbenmaschinen" (1963, Deutsche Verlags-­Anstalt GmbH Stuttgart) bzw. "Rotary Piston Machines" (Lon­don, Iliffe, 1965) entnehmen.1 and 2 show a type of an internal-axis rotary piston machine which is described in more detail in the unpublished DE-A-3 432 915 by the same applicant. Other embodiments are widely described in the literature. The basic structure and other embodiments can be found, for example, in the book "Classification of the Rotary Piston Machines" (1963, Deutsche Verlags-Anstalt GmbH Stuttgart) or "Rotary Piston Machines" (London, Iliffe, 1965).

Die dargestellte Maschine hat ein Drehzahlverhältnis zwi­schen dem Aussenläufer 2 und dem Innenläufer 3 von 2:3, so dass am Aussenläufer drei Eingriffsteile 2a,2b,2c und am Innenläufer 3 zwei Eingriffsteile 3a,3b vorgesehen sind. Das Maschinengehäuse 1 hat an seinem Umfang einen Einlasskanal 4 und einen Auslasskanal 5, die durch den dichtspaltnahen Vorbeilauf der äusseren Umfangsfläche 7 der Eingriffsteile 2a,2b,2c entlang der Gehäuseinnenfläche 8 gegeneinander ab­gedichtet sind.The machine shown has a speed ratio between the outer rotor 2 and the inner rotor 3 of 2: 3, so that three engagement parts 2a, 2b, 2c are provided on the outer rotor and two engagement parts 3a, 3b on the inner rotor 3. The machine housing 1 has an inlet channel 4 and an outlet channel 5 on its circumference, which are sealed off from one another by the passage close to the sealing gap on the outer peripheral surface 7 of the engagement parts 2a, 2b, 2c along the inner surface 8 of the housing.

Die Lagerung der Läufer 2,3 erfolgt durch Wälzlager 10,11, die sich an Seitenplatten 12,13 des Gehäuses 1 abstützen. Aufgrund des Abstandes a zwischen den geometrischen Achsen 14,15 hat das innere Wälzlager 11 des Innenläufers 3 eine radial versetzte Position innerhalb des umschliessenden äu­sseren Wälzlagers 10 des Aussenläufers 2. Für die Lagerung des Aussenläufers 2 sind an dessen Seitenteilen 17,18 Naben 19,20 angeformt, die die Wälzlager 10 einschliessen. Ausser­dem bildet ein Teil einer dieser Naben 20 ein Hohlzahnrad 21, mit dem ein Stirnzahnrad 22 kämmt, das auf die Welle 23 des Innenläufers 3 aufgesetzt ist.The runners 2, 3 are supported by roller bearings 10, 11 which are supported on side plates 12, 13 of the housing 1. Due to the distance a between the geometrical axes 14, 15, the inner roller bearing 11 of the inner rotor 3 has a radially offset position within the surrounding outer roller bearing 10 of the outer rotor 2. For the mounting of the outer rotor 2, 17, 18 hubs are on the side parts thereof 19,20 formed, which include the roller bearings 10. In addition, part of one of these hubs 20 forms a hollow gear 21, with which a spur gear 22 meshes, which is placed on the shaft 23 of the inner rotor 3.

Die Seitenteile 17,18 des Aussenläufers 2 verbinden dessen drei Eingriffsteile 2a,2b,2c miteinander und dichten dabei zusammen mit je einem mit den Gehäuseseitenplatten 12, 13 fest verbundenen Dichtkörper 25,26 die Arbeitsräume 9 der Maschine in axialer Richtung ab. Entsprechend haben diese Seitenteile 17,18 des Aussenläufers 2 die Form von Kreis­ringen, die radial aussen und radial innen je eine Radial­dichtung 27,28 aufweisen. Da diese Seitenteile 17,18 als Tragring die Eingriffsteile 2a,2b,2c des Aussenläufers 2 tragen, ist die Genauigkeit der Position der Eingriffsteile 2a,2b,2c relativ zu den Seitenteilen 17,18 auch ausschlag­gebend für die Weite der Dichtspalte zwischen den äusseren Umfangsflächen 7 der Eingriffsteile 2a,2b,2c und der Gehäu­seinnenfläche 8.The side parts 17, 18 of the external rotor 2 connect its three engagement parts 2a, 2b, 2c to one another and, together with a sealing body 25, 26 firmly connected to the housing side plates 12, 13, seal the working spaces 9 of the machine in the axial direction. Correspondingly, these side parts 17, 18 of the outer rotor 2 have the form of circular rings, each of which has a radial seal 27, 28 radially outside and radially inside. Since these side parts 17, 18 carry the engagement parts 2a, 2b, 2c of the outer rotor 2 as a support ring, the accuracy of the position of the engagement parts 2a, 2b, 2c relative to the side parts 17, 18 is also decisive for the width of the sealing gaps between the outer peripheral surfaces 7 of the engagement parts 2a, 2b, 2c and the housing inner surface 8.

Für die Weite der Dichtspalte zwischen den Innenflächen 30, 31 des Aussenläufers 2 und den Umfangsflächen 32,33 des In­nenläufers 3 ist neben der Genauigkeit der Abmessungen der Eingriffsteile 2a,2b,2c und derjenigen des Innenläufers 3 auch die Genauigkeit der Position der Eingriffsteile 2a,2b, 2c relativ zu den Seitenteilen 17,18 in tangentialer bzw. in Umfangsrichtung massgebend.For the width of the sealing gaps between the inner surfaces 30, 31 of the outer rotor 2 and the peripheral surfaces 32, 33 of the inner rotor 3, in addition to the accuracy of the dimensions of the engagement parts 2a, 2b, 2c and that of the inner rotor 3, the accuracy of the position of the engagement parts 2a, 2b, 2c relative to the side parts 17, 18 in the tangential or in the circumferential direction.

Durch das erfindungsgemässe Verfahren wird ein Weg gezeigt, wie eine hinsichtlich minimaler Dichtspaltweiten genaue Po­sitionierung der Eingreifsteile 2a,2b,2c des Aussenläufers 2 relativ zu den Seitenteilen 17,18 des Aussenläufers 2 mög­lich ist, die über ihre Lagerung die Position relativ zum Maschinengehäuse 1 bestimmen. Durch die Verbindung der Ein­griffsteile 2a,2b,2c nach ihrer einzelnen Herstellung mit den Seitenteilen 17,18 des Aussenläufers wirken sich geringe Massabweichungen der Eingriffsteile nicht oder nur im ge­ ringen Masse auf die Weite der Dichtspalte aus, da Massab­weichungen durch eine genaue Positionierung der Eingriffs­teile kompensiert werden.The method according to the invention shows a way in which a precise positioning of the engaging parts 2a, 2b, 2c of the outer rotor 2 with respect to the minimum sealing gap widths is possible relative to the side parts 17, 18 of the outer rotor 2, which determine the position relative to the machine housing 1 via their mounting . By connecting the engaging parts 2a, 2b, 2c after their individual manufacture with the side parts 17, 18 of the external rotor, slight dimensional deviations of the engaging parts do not have an effect, or only in ge wring out mass to the width of the sealing gaps, since dimensional deviations are compensated for by precise positioning of the engagement parts.

Wie den Darstellungen der Fig.3 bis 6 zu entnehmen ist, er­folgt die Positionierung der Eingriffsteile 2a,2b,2c bzw. 2a',2b',2c' relativ zu den Seitenteilen 17,18 des Aussen­läufers durch zwischen die Eingriffsteile eingreifende Mon­tagekörper 35-37 und die Anlage ihrer äusseren Umfangsflä­chen 7 an äusseren Kreisbogenstücken 38-40. Durch die Aus­führung dieser Montagekörper 35-37 und der Montagekreisbo­genstücke 38-40 als Präzisionsteile ergibt sich eine sehr genaue Positionierung, ohne wesentliche Massabweichungen zwischen einer grossen Anzahl von in Serienfertigung herge­stellten Aussenläufern. Gemäss dem Ausführungsbeispiel der Fig.6 ist einer der Montagekörper 36" mittels eines einge­fügten Schiebekeils 42 in seiner Breite einstellbar, so dass er nach Einschieben zwischen die Eingriffsteile 2a" und 2c" deren Eckbereiche mit seitlichen Fortsätzen 43,44 hinterfassen kann. In Abweichung von der zeichnerischen Darstellung können auch alle Montagekörper 35"-37" breiten­veränderlich ausgeführt sein. Vorzugsweise sind die sichel­förmigen oder kreisabschnittförmigen Eingriffsteile 2a",2b", 2c" an ihren Eckbereichen mit parallel zu den Seitenflächen der Montagekörper 35"-37" verlaufenden Abflachungen 45,46 versehen, durch die sich die Genauigkeit der Positionierung mittels der Montagekörper 35"-37" erhöht.As can be seen from the illustrations in FIGS. 3 to 6, the engagement parts 2a, 2b, 2c or 2a ', 2b', 2c 'are positioned relative to the side parts 17, 18 of the external rotor by means of mounting bodies 35 - which engage between the engagement parts. 37 and the abutment of their outer peripheral surfaces 7 on outer circular arc pieces 38-40. The design of these assembly bodies 35-37 and the assembly circle pieces 38-40 as precision parts results in very precise positioning, without significant dimensional deviations between a large number of mass-produced external rotors. According to the exemplary embodiment in FIG. 6, one of the mounting bodies 36 "can be adjusted in width by means of an inserted sliding wedge 42, so that after insertion between the engagement parts 2a" and 2c "the corner areas thereof can be covered with lateral extensions 43,44. In deviation from In the drawing, all of the mounting bodies 35 "-37" can also be designed to vary in width. Preferably, the crescent-shaped or circular-shaped engagement parts 2a ", 2b", 2c "are at their corner areas with flats 45, parallel to the side faces of the mounting bodies 35" -37 ". 46 provided, through which the accuracy of the positioning by means of the mounting body 35 "-37" increases.

Die Montagekörper 35'-37' des Ausführungsbeispieles der Fig.5 sind an ihrer Stirnseite mit Aussparungen 48 versehen, so dass seitliche Fortsätze 49,50 vorhanden sind, die trotz bereits eingesetztem Innenläufer 3 den Montagekontakt an ei­nem wesentlichen Bereich der Innenflächen 30,31 der Ein­griffsteile 2a',2b',2c' ermöglichen, indem die Eingriffs­teile 3a,3b des Innenläufers 3 zwischen sie eingreifen. Durch die Montage der Eingriffsteile 2a',2b',2c' an den Sei­ tenteilen 17,18 bei bereits eingesetztem Innenläufer 3, der durch die Dichtkörper 25,26 in seiner Lage relativ zu den Seitenteilen 17,18 des Aussenläufers 2 (Fig.1) fixiert ist, können die Eingriffsteile 2a',2b',2c' auch relativ zum In­nenläufer 3 genau montiert werden. Dabei ist es auch möglich die Montage oder Ausrichtung der Eingriffsteile bei bereits montierten Wälzlagern 10,11 und angesetzten Gehäuseseiten­platten 12,13 durchzuführen, wobei die Befestigung der Ein­griffsteile 2a',2b',2c' beispielsweise durch Schweissnähte erfolgt, die am Aussenumfang des Aussenläufers 2 vorgesehen werden.The mounting bodies 35'-37 'of the exemplary embodiment in FIG. 5 are provided with cutouts 48 on their end faces, so that lateral extensions 49, 50 are present which, despite the inner rotor 3 already inserted, make the mounting contact on a substantial area of the inner surfaces 30, 31 of the Engaging parts 2a ', 2b', 2c 'enable by engaging the engaging parts 3a, 3b of the inner rotor 3 between them. By mounting the engaging parts 2a ', 2b', 2c 'on the screen Tent parts 17, 18 when the inner rotor 3 is already inserted, which is fixed in position relative to the side parts 17, 18 of the outer rotor 2 (FIG. 1) by the sealing bodies 25, 26, the engagement parts 2a ', 2b', 2c 'can also can be mounted exactly relative to the inner rotor 3. It is also possible to carry out the assembly or alignment of the engagement parts in the case of already mounted roller bearings 10, 11 and attached housing side plates 12, 13, the engagement parts 2 a ', 2b', 2c 'being fastened, for example, by welds which are made on the outer circumference of the outer rotor 2 be provided.

Auf die Zentrierung der Eingriffsteile 2a,2b,2c mittels Kreisbogenstücken 38-40 eines Montagekäfigs 52, die während der Montage aussen an ihnen anliegen, kann verzichtet wer­den, falls gemäss der in Fig.7 und 8 dargestellten Ausfüh­rungsform eines Aussenläufers am Aussenrand der Seitenteile 17',18' Kreisbogenstücke 53,54,55 angeformt sind, die in ei­ner äusseren Randnut 56,57 der Eingriffsteile (2b'") zur An­lage gelangen. Diese Kreisbogenstücke 53-55 lassen sich mit den kreisringförmigen Seitenteilen 17',18' als Drehteile mit hoher Präzision bei verhältnismässig geringem Aufwand herstellen.The centering of the engagement parts 2a, 2b, 2c by means of circular arc pieces 38-40 of a mounting cage 52, which bear against them on the outside during assembly, can be dispensed with if, according to the embodiment of an external rotor shown in FIGS. 7 and 8, on the outside edge of the side parts 17 ', 18' are formed on circular arc pieces 53, 54, 55 which come to rest in an outer peripheral groove 56, 57 of the engaging parts (2b '"). These circular arc pieces 53-55 can be turned with the annular side parts 17', 18 ' manufacture with high precision with relatively little effort.

Die feste Verbindung zwischen den Eingriffsteilen 2a,2b,2c und den Seitenteilen 17,18 bzw. 17',18' kann durch übliche Verbindungsmittel erfolgen, wie Klebemittel, Schweissnähte, Schrauben 58,59; 60,61, 62 u.dgl.The fixed connection between the engaging parts 2a, 2b, 2c and the side parts 17, 18 and 17 ', 18' can be made by conventional connecting means, such as adhesives, weld seams, screws 58, 59; 60, 61, 62 and the like.

Claims (9)

1. Verfahren zur Herstellung einer innenachsigen Drehkol­benmaschine, deren Aussenläufer (2) mindestens drei achspa­rallel verlaufende, einstückige Eingriffsteile (2a,2b,2c) aufweist, die durch endseitige Seitenteile (17,18) mitein­ander verbunden sind, wobei die Aussen- und Innenläufer (2, 3) gegeneinander und gegenüber einem Gehäuse (1) durch dichtspaltbildende Annäherung abgedichtet sind, dadurch ge­kennzeichnet, dass die Eingriffsteile (2a,2b,2c) des Aussen­läufers (2) als Einzelteile hergestellt und nach gegenseiti­ger Ausrichtung an ihren beiden Enden mit je einem kreis­ringförmigen Seitenteil (17,18) fest verbunden werden, wobei die Ausrichtung der Eingriffsteile (2a,2b,2c) durch Anlage ihrer im Querschnitt kreisbogenförmigen Aussenfläche (7) an einem Montagering (52,38-40) oder Kreisbogenstücken (53-55) der Seitenteile (17,18) und zwischen sie eingreifende Monta­gekörper (35-37) erfolgt.1. A method for producing an inner-axis rotary piston machine, the outer rotor (2) of which has at least three one-piece engaging parts (2a, 2b, 2c) which run parallel to the axis and which are connected to one another by end-side parts (17, 18), the outer and inner rotors ( 2, 3) against each other and against a housing (1) by sealing gap-forming approach, characterized in that the engaging parts (2a, 2b, 2c) of the outer rotor (2) are manufactured as individual parts and after mutual alignment at both ends with one each circular side part (17, 18) are firmly connected, the alignment of the engagement parts (2a, 2b, 2c) by contacting their outer surface (7), which is circular in cross section, against a mounting ring (52, 38-40) or circular arc pieces (53-55) the side parts (17, 18) and between them engaging mounting body (35-37). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Eingriffsteile (2a,2b,2c) des Aussenläufers (2) den Innenläufer (3) zwischen sich einschliessen, während sie relativ zu den Seitenteilen (17,18) des Aussenläufers (2) ausgerichtet werden.2. The method according to claim 1, characterized in that the engaging parts (2a, 2b, 2c) of the outer rotor (2) enclose the inner rotor (3) between them, while relative to the side parts (17, 18) of the outer rotor (2) be aligned. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Ausrichtung der Eingriffsteile (2a,2b,2c) nach dem Einsetzen von Dichtkörpern (25,26) in die Seitenteile (17,18) des Aussenläufers (2) erfolgt, durch die hindurch sich die Welle (23) des Innenläufers (3) erstreckt.3. The method according to claim 2, characterized in that the alignment of the engagement parts (2a, 2b, 2c) takes place after the insertion of sealing bodies (25,26) in the side parts (17,18) of the outer rotor (2), through which the shaft (23) of the inner rotor (3) extends. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Ausrichtung der Eingriffsteile (2a,2b,2c) nach der Montage der den Innenläufer (3) und die Seitenteile (17,18) des Aussenläufers (2) lagernden Wälzlager an Sei­tenplatten (12,13) des Gehäuses (1) der Maschine erfolgt.4. The method according to claim 3, characterized in that the alignment of the engaging parts (2a, 2b, 2c) after the mounting of the inner rotor (3) and the side parts (17, 18) of the outer rotor (2) bearing roller bearings on side plates (12 , 13) of the housing (1) of the machine. 5. Innenachsige Drehkolbenmaschine hergestellt gemäss dem Verfahren des Anspruchs 1, dadurch gekennzeichnet, dass die Eingriffsteile (2a,2b,2c) des Aussenläufers (2) mit zwei an seinen axialen Enden vorgesehenen Seitenteilen (17,18) durch Befestigungsmittel (58-62) verbunden sind.5. Internal-axis rotary piston machine manufactured according to the method of claim 1, characterized in that the engagement parts (2a, 2b, 2c) of the outer rotor (2) with two side parts (17, 18) provided on its axial ends by fastening means (58-62) are connected. 6. Drehkolbenmaschine nach Anspruch 5, dadurch gekenn­zeichnet, dass am Aussenrand der Seitenteile (17',18') des Aussenläufers (2) Kreisbogenstücke (53-55) angeformt sind, die in jeweils eine äussere Randnut (56,57) der Eingriffs­teile (2b"') eingreifen.6. Rotary piston machine according to claim 5, characterized in that on the outer edge of the side parts (17 ', 18') of the outer rotor (2) circular arc pieces (53-55) are formed, each in an outer peripheral groove (56,57) of the engagement parts ( 2b "'). 7. Montagekörper zur Durchführung des Verfahrens nach An­spruch 3, dadurch gekennzeichnet, dass die zwischen den Ein­griffsteilen (2a',2b',2c') eingreifenden Montagekörper (35' bis 37') an ihrer Stirnseite Fortsätze (49,50) für die An­lage an den Innenflächen (30,31) des Aussenläufers (2) auf­weisen.7. Mounting body for performing the method according to claim 3, characterized in that between the engaging parts (2a ', 2b', 2c ') engaging mounting body (35' to 37 ') on its end face extensions (49,50) for the system have on the inner surfaces (30, 31) of the outer rotor (2). 8. Montagekörper zur Durchführung des Verfahrens nach An­spruch 1, dadurch gekennzeichnet, dass die Montagekörper (36") in ihrer Breite verstellbar sind.8. Mounting body for performing the method according to claim 1, characterized in that the mounting body (36 ") are adjustable in width. 9. Montagekörper nach Anspruch 8, dadurch gekennzeichnet, dass die Montagekörper (36") an ihrer Stirnseite seitlich abstehende Fortsätze (43,44) zum Hinterfassen von Eckberei­chen der Eingriffsteile (2a",2b",2c") des Aussenläufers (2) aufweisen.9. Mounting body according to claim 8, characterized in that the mounting body (36 ") have laterally projecting projections (43, 44) on their front side for gripping corner areas of the engagement parts (2a", 2b ", 2c") of the outer rotor (2) .
EP86109610A 1985-09-20 1986-07-14 Production method of an internal-axis rotary piston machine Expired - Lifetime EP0218015B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86109610T ATE50821T1 (en) 1985-09-20 1986-07-14 PROCESS FOR MANUFACTURE OF AN INTERNAL AXLE ROTARY LOBE MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4092/85 1985-09-20
CH4092/85A CH667130A5 (en) 1985-09-20 1985-09-20 METHOD FOR PRODUCING AN INTERNAL AXIAL ROTARY PISTON MACHINE.

Publications (2)

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EP0218015A1 true EP0218015A1 (en) 1987-04-15
EP0218015B1 EP0218015B1 (en) 1990-03-07

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US (1) US4722126A (en)
EP (1) EP0218015B1 (en)
JP (1) JPH079163B2 (en)
AT (1) ATE50821T1 (en)
CH (1) CH667130A5 (en)
DE (1) DE3669340D1 (en)
ES (1) ES2001536A6 (en)

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DE3821889C1 (en) * 1988-06-29 1989-08-17 Pierburg Gmbh, 4040 Neuss, De Rotary engine
DE3821162C1 (en) * 1988-06-23 1989-08-24 Pierburg Gmbh, 4040 Neuss, De Rotary engine
RU2635635C1 (en) * 2016-09-22 2017-11-14 Владимир Иванович Демиденко Thermal insulating bracket for fixing profiles of suspended facades

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Publication number Priority date Publication date Assignee Title
EP1837505A1 (en) * 2004-12-29 2007-09-26 Jungkuang Chou Rotary engine
CN101396786B (en) * 2007-09-28 2010-07-21 深圳市大族激光科技股份有限公司 Manufacture method of pressure-foot parts
CN102135033B (en) * 2010-01-21 2013-04-10 周荣光 Improved rotary engine structure
US9149919B1 (en) * 2011-04-28 2015-10-06 Pneumatic Scale Corporation Magnetic fastening system and method for change parts

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GB979070A (en) * 1960-05-25 1965-01-01 Francis Alpine Hill Gears with rigid molded surfaces
US3439551A (en) * 1967-09-13 1969-04-22 Frank A Militana Toothed wheel with replaceable toothed segments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821162C1 (en) * 1988-06-23 1989-08-24 Pierburg Gmbh, 4040 Neuss, De Rotary engine
DE3821889C1 (en) * 1988-06-29 1989-08-17 Pierburg Gmbh, 4040 Neuss, De Rotary engine
RU2635635C1 (en) * 2016-09-22 2017-11-14 Владимир Иванович Демиденко Thermal insulating bracket for fixing profiles of suspended facades

Also Published As

Publication number Publication date
ES2001536A6 (en) 1988-06-01
EP0218015B1 (en) 1990-03-07
CH667130A5 (en) 1988-09-15
ATE50821T1 (en) 1990-03-15
JPS6291604A (en) 1987-04-27
US4722126A (en) 1988-02-02
JPH079163B2 (en) 1995-02-01
DE3669340D1 (en) 1990-04-12

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