DE472477C - Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially - Google Patents

Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially

Info

Publication number
DE472477C
DE472477C DEK106760D DEK0106760D DE472477C DE 472477 C DE472477 C DE 472477C DE K106760 D DEK106760 D DE K106760D DE K0106760 D DEK0106760 D DE K0106760D DE 472477 C DE472477 C DE 472477C
Authority
DE
Germany
Prior art keywords
piston
housing
mounted eccentrically
moved radially
drum mounted
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
DEK106760D
Other languages
German (de)
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
Publication date
Priority to DEK106760D priority Critical patent/DE472477C/en
Application granted granted Critical
Publication of DE472477C publication Critical patent/DE472477C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/30Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Description

Drehkolbenmaschine mit in der exzentrisch zum Gehäuse gelagerten Kolbentrommel radial verschiebbaren Schieberkolben Bei Drehkolbenmaschinen mit im Zylinder exzentrisch angeordneter Kolbentrommel mit Radialschlitzen, in denen entsprechend der Exzentrizität des Kolbens dem Gehäuse gegenüber die Schieberkolben eine hin und her gehende Bewegung ausführen, macht die Herstellung der. Radialschlitze im Kolben die größten Schwierigkeiten. Es ist auch mit den besten Fräsmaschinen nicht möglich, die Schlitze mit völlig parallelen Wandungen auszuführen, obgleich in dieser Hinsicht unbedingte Genauigkeit für den widerstandslosen Lauf der Schieberkolben und für deren durchaus dichte Führung eine Forderung ist, deren restlose Erfüllung Voraussetzung für den Gebrauch derartiger Maschinen ist. Ungenauigkeiten von Zehnteln. eines Millimeters sind bei der bisher bekannten Bearbeitungsweise der Kolben unvermeidlich, und diese Ungenauigkeiten reichen hin, um den Wirkungsgrad der Maschine bereits ungünstig zu beeinflussen. Auch das nachträgliche Schleifen der gefrästen Schlitze ergibt keine durchaus parallelen Wandungen, weil die Schleifscheiben, die wegen der geringen Dicke der Schieber nur verhältnismäßig dünn sein können und einen im Verhältnis zu ihrer Stärke großen Durchmesser besitzen, mit tieferem Eindringen in den zu bearbeitenden Schlitz sich - wenn auch kaum merklich - verbiegen und dadurch wieder ungenaue Arbeit liefern.Rotary piston machine with piston drum mounted eccentrically to the housing Radially displaceable slide piston In rotary piston machines with eccentric in the cylinder arranged piston drum with radial slots, in which according to the eccentricity of the piston to the housing opposite the slide piston a reciprocating movement run, makes the manufacture of the. Radial slots in the piston the greatest difficulties. Even with the best milling machines, it is not possible to completely cut the slots with parallel walls, although in this respect absolute accuracy for the resistance-free running of the spool and for their tight guidance a requirement, the complete fulfillment of which is a prerequisite for the use of such Machines is. Inaccuracies of tenths. one millimeter are at the so far well-known machining method of the piston inevitable, and these inaccuracies are sufficient to already have an unfavorable influence on the efficiency of the machine. Even the subsequent grinding of the milled slots does not result in any parallel Walls because the grinding wheels only because of the small thickness of the slide can be relatively thin and large in proportion to their strength Have diameter, with deeper penetration into the slot to be machined - even if hardly noticeable - bend and thus again deliver inaccurate work.

Um zu durchaus genauem Abstand der Wände der Kolbentrommelschlitze zu gelangen, wird gemäß der Erfindung die Kolbentrommel a an den Stellen, wo diese Schlitze angeordnet werden sollen, in geringer Entfernung von ihrem Umfang mit Bohrungen b versehen, wie dies in Abb,x dargestellt ist. Der zwischen diesen Bohrungen und dem Rand der Kolbentrommel u stehenbleibende Teil wird dann, wie aus Abb. 2 ersichtlich, geschlitzt. Die Schlitze sind etwas breiter gehalten als die später einzusetzenden Schieberkolben f. Die zylindrischen Bohrungen b werden auf ein genaues Maß ausgeschliffen. Sodann werden gemäß Abb.3 im Querschnitt kreissegnientförmige Führungskörper e als Teile sogenannter Nüsse hergestellt und sowohl auf der gewölbten wie auf der ebenen Seite genau geschliffen. Beim Schleifen der gewölbten Seite wird zwischen zwei Teile e ein völlig eben geschhffenes Hilfsstück d eingelegt, das die genaue, den Löchern a angepaßte zylindrische Gestaltung der Außenfläche der Nüsse sichert. Die in. den Bohrungen b paarweise eingesetzten Nüsse e lassen zwischen den einander zugekehrten ebenen Flächen einen Zwischenraum, der genau der Dicke der Schieberkolben f entspricht. ' Man hat bereits derartige Nüsse bei Maschinen mit umlaufendem Kolben zur Anwendung gebracht, bei denen die Nüsse drehbar in den Bohrungen der Kolbentrommel gelagert sind und bei denen die mit der Kolbentrommel drehbaren Schieber- oder Flügelkolben exzentrisch zur Kolbentrommel, somit zentrisch zum Zylinder, geführt werden. .In order to have a very precise distance between the walls of the piston drum slots to get, according to the invention, the piston drum a at the points where this Slots are to be arranged at a short distance from their circumference with holes b as shown in Fig, x. The one between these holes and The part remaining on the edge of the piston drum is then, as can be seen from Fig. 2, slotted. The slots are kept a little wider than those to be inserted later Slide piston f. The cylindrical bores b are ground to an exact dimension. Then, as shown in Fig Parts of so-called nuts are made and both on the curved and on the flat Side precisely sanded. When sanding the curved side it gets between two parts e inserted a completely evenly created auxiliary piece d, which shows the exact, the holes a adapted cylindrical design of the outer surface of the nuts secures. The in. The Bores b in pairs inserted nuts e leave between the facing flat surfaces a gap which corresponds exactly to the thickness of the spool f. 'Such nuts are already used in machines with rotating pistons brought, in which the nuts rotatably mounted in the bores of the piston drum and in which the slide or vane pistons rotatable with the piston drum eccentrically to the piston drum, thus centrically to the cylinder. .

Von diesen bekannten Anordnungen unterscheidet sich die Maschine gemäß der Erfindung dadurch, daß die zur Führung der Schieberkolben dienenden Nüsse fest in der Kolbentrommel sitzen. Zu diesem Zweck werden die Nüsse durch Keile, Stifte, Schrauben, Pilze o. dgl. gegen Drehung gesichert. Eine Ausführungsform einer derartigen Sicherung ist in den Abb. q. und 5 (Bezugszeichen g) veranschaulicht.The machine according to FIG. 1 differs from these known arrangements of the invention in that the nuts serving to guide the slide piston are fixed sit in the piston drum. To do this, the nuts are secured by wedges, pins, Screws, mushrooms or the like secured against rotation. An embodiment of such a Fuse is shown in fig. Q. and Fig. 5 (reference character g).

Claims (1)

PATENTANSPRUCH: Drehkolbenmaschine mit in der exzentrisch zum Gehäuse gelagerten Kolbentrommel radial verschiebbaren Schieber- -kolben, dadurch gekennzeichnet, daß die Schieberkolben zwecks einerseits zwanglosen Ganges und anderseits dichter Führung in h4'üssen mit genau eben geschliffenen, parallelen Flächen geführt sind, die in Bohrungen der Kolbentrommel eingeschliffen und gegen Drehung gesichert sind. PATENT CLAIM: Rotary piston machine with the piston drum, which is mounted eccentrically to the housing, radially displaceable slide piston, characterized in that the slide pistons are guided in bores with precisely flat, parallel surfaces for the purpose of unconstrained movement on the one hand and tight guidance on the other The piston drum is ground in and secured against rotation.
DEK106760D Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially Expired DE472477C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK106760D DE472477C (en) Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK106760D DE472477C (en) Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially

Publications (1)

Publication Number Publication Date
DE472477C true DE472477C (en) 1929-06-18

Family

ID=7241006

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK106760D Expired DE472477C (en) Rotary piston machine with the piston drum mounted eccentrically to the housing and which can be moved radially

Country Status (1)

Country Link
DE (1) DE472477C (en)

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