EP3309392A1 - Method for producing a sliding block of a hydrostatic displacement machine - Google Patents

Method for producing a sliding block of a hydrostatic displacement machine Download PDF

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Publication number
EP3309392A1
EP3309392A1 EP17193761.8A EP17193761A EP3309392A1 EP 3309392 A1 EP3309392 A1 EP 3309392A1 EP 17193761 A EP17193761 A EP 17193761A EP 3309392 A1 EP3309392 A1 EP 3309392A1
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EP
European Patent Office
Prior art keywords
component
piston
shoe
sliding shoe
sliding
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.)
Granted
Application number
EP17193761.8A
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German (de)
French (fr)
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EP3309392B1 (en
Inventor
Lukas Krittian
Thomas LÖFFLER
Rolf Lasaar
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Linde Hydraulics GmbH and Co KG
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Linde Hydraulics GmbH and Co KG
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Publication of EP3309392A1 publication Critical patent/EP3309392A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2035—Cylinder barrels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • F04B1/126—Piston shoe retaining means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts

Definitions

  • the invention relates to a method for producing a sliding block of a hydrostatic displacement machine, in particular an axial piston machine, which is articulated to a pressurized piston and supports the piston on a thrust-generating tread, wherein the sliding block of a ball joint head, with which the shoe attached to the piston articulated is a Gleitschuhplatte with which the sliding shoe is supported on the tread, and a Gleitschuhhals formed between the ball joint head and the Gleitschuhplatte.
  • Hydrostatic displacement machines in particular axial piston machines, have a sliding bearing point in the region of the support of the pistons on a thrust-generating running surface. This support of the piston on a thrust-generating running surface via sliding blocks as support elements.
  • the shoes are hinged to the pressurized piston each by means of a ball joint. Due to the high pressure and resulting from the pressurization of the piston forces may be additionally formed a hydrostatic discharge at the sliding bearing between the shoes and the tread.
  • Known sliding blocks consist of a ball joint head, with which the shoe is hinged to the piston, a Gleitschuhplatte with which the shoe is supported on the tread and on which the tribologically favorable layer can be applied, and a Gleitschuhhals, between the ball joint head and of the Sliding plate is formed.
  • the Gleitschuhhals and the Gleitschuhplatte is formed of a one-piece steel body. The shoes are thus made of a solid material. If necessary, a tribologically favorable material can be added to the steel body on the front side of the shoe plate.
  • the present invention has for its object to provide a method for producing a shoe of the type mentioned available, with a low production cost, a shoe can be produced, which has low mass forces at high speeds.
  • the shoe is formed by a plurality of components of different density, wherein the components are connected by magnetic pulse welding to the shoe.
  • the sliding shoe which consists of the ball joint head, the Gleitschuhplatte and the Gleitschuhhals, thus formed by a plurality and thus at least two components having different density.
  • the components and thus materials of different density are inventively welded by magnetic pulse welding to form a shoe. In Magnetpulsumformen a magnetic pulse is generated by its energy input components and thus different materials Density can be welded together with little effort.
  • Magnetic pulse welding of a plurality of components of different density to form a sliding shoe makes it possible to manufacture a lightweight sliding shoe, on which only small mass forces and centrifugal forces act at high rotational speeds, with little manufacturing effort.
  • the mass forces acting on the sliding shoe at high speeds are reduced, as a result of which the running of the sliding shoes according to the invention on the running surface can be improved and tipping of the sliding shoes from the running surface can be prevented.
  • the sliding block is formed from a first component, on which the ball joint head is formed, and from a second component, on which the Gleitschuhhals and the Gleitschuhplatte are formed, wherein the first component and the second component by magnetic pulse welding to the Sliding shoe connected and thus welded.
  • the sliding block is formed from a first component, on which the ball joint head and the Gleitschuhhals are formed, and from a second component, on which the Gleitschuhplatte is formed, wherein the first component and the second component by Magnetic pulse welding are connected to the shoe and thus welded.
  • the second component may be formed according to an advantageous embodiment of the invention as a circular plate or as an annular disc.
  • the first component consists of a material of higher strength, in particular steel, and the second component of a material with lower strength, in particular brass or aluminum.
  • the first component which is provided with the ball joint head and consists of a material of higher strength, a high strength is achieved at the ball joint between the piston and sliding shoe, so that the piston can be acted upon by high pressures and thus achieves a high power density of the displacement machine can be.
  • the second component made of a material with lower Strength and lower density, it is possible to reduce the forces acting on the shoe at high speeds of the positive displacement machine mass forces.
  • the object is also achieved by a sliding shoe for supporting a piston of a hydrostatic displacement machine, in particular an axial piston machine, opposite to a thrust-generating running surface, which is produced by a previously described method.
  • a hydrostatic displacement machine in particular an axial piston machine, with a rotatable about a rotation axis arranged cylindrical drum, which is provided with at least one piston recess, in each of which a piston is longitudinally displaceable and by a previously described sliding shoe against a tread producing tread is supported.
  • FIG. 1 is a hydrostatic displacement machine 1 with sliding shoes 6 of the prior art shown in a longitudinal section.
  • the illustrated embodiment shows an axial piston machine in swash plate design as an example of a hydrostatic displacement machine.
  • the displacement machine 1 has a cylinder drum 3 rotatably mounted about a rotation axis 2, which is provided with a plurality of piston recesses 4 arranged concentrically to the rotation axis 2, which are preferably formed by cylinder bores and in each of which a piston 5 is mounted longitudinally displaceable.
  • the pistons 5 are supported in the region projecting out of the cylindrical drum 3 by means of a respective sliding shoe 6 as a supporting element on a thrust-generating running surface 7, which is formed by a swashplate 8 arranged rotatably around the rotation axis 2.
  • the swash plate 8 may be attached to a housing 9 of the displacement machine 1 - as in FIG. 1 is shown - molded or rotationally fixed, wherein the displacement machine 1 has a fixed displacement volume.
  • the cylinder drum 3 is supported in the axial direction of the displacement machine 1 opposite to the running surface 7 on a housing-side distributor 10, which forms a control surface 11.
  • the control surface 11 is provided with kidney-shaped control recesses, which allow the connection of an inlet channel 14 and an outlet channel 13 in the housing 9 with the piston recesses 4.
  • the distributor 10 may be formed by a disk-shaped component, which is fastened in a rotationally fixed manner to the housing 9, for example a housing cover 9a of the housing 9.
  • the distributor 10 can be integrally formed on the housing 9, for example, a housing cover 9a of the housing 9, so that the function of the control surface 11 is integrated into the housing 9, 9a.
  • the control surface 11 may as in the FIG. 1 be flat or spherical.
  • the cylindrical drum 3 is penetrated by a central bore, through which a concentric to the axis of rotation 2 arranged drive shaft 15 through the cylinder drum. 3 is guided.
  • the drive shaft 15 is rotatably supported by bearings 16, 17 in the housing 9, 9a.
  • the cylinder drum 3 is rotatably by means of a driving toothing 18 with the drive shaft 15, but axially slidably connected. Also shown is a pressure spring 19 which presses and supports the cylinder drum 3 in the axial direction against the control surface 11.
  • the sliding blocks 6 are connected by means of a ball joint 25 formed as a sliding joint with the respective piston 5 hinged.
  • the ball joint 25 between the piston 5 and the shoe 6 consists of a ball 26 and a cap 27.
  • the attachment of the ball 26 in the cap 27, for example, by a positive connection, in which an edge region of the cap 27 is deformed to the ball 26 enclose a positive fit.
  • the sliding blocks 6 consist of a ball joint head 6a, with which the sliding block 6 is pivotally attached to the piston 5, a Gleitschuhplatte 6b, with the sliding shoe 6 is supported on the tread 7, and a Gleitschuhhals 6c, between the ball joint head 6a and the Sliding plate 6b is formed.
  • the ball joint head 6a, the Gleitschuhhals 6c and the Gleitschuhplatte 6b is formed by a one-piece steel body, so that the sliding block 6 consists of a solid material.
  • the sliding shoes 6 and the running surface 7 form a sliding bearing point, on which a relative movement occurs between the sliding shoes 6 co-rotating with the cylinder drum 3 and the piston 5 and the running surface 7 secured against rotation on the housing 9.
  • a bearing metal layer 28 for example a brass plate, can be added to the end face of the sliding shoe plate 6b facing the running surface 7 as a tribologically favorable bearing metal material.
  • the sliding shoes 6 are hydrostatically relieved at the tread 7.
  • the hold-down device 20 is formed in the illustrated embodiment as a hold-down disc, which cooperates with contact surfaces on the slide shoe 6.
  • the sliding blocks 6 according to the invention in the FIGS. 2 to 4 are formed of several, in the illustrated embodiments of two components B1, B2, different density, which are connected by magnetic pulse welding to the shoe 6 and thus welded.
  • the components B1, B2 welded together by welds SW.
  • FIG. 2 is formed on the first component B1 of the ball joint head 6a and are formed on the second component B2 of the Gleitschuhhals 6c and the Gleitschuhplatte 6b.
  • the two components B1, B2 with a weld SW which is arranged on the facing end faces between the ball joint head 6a and the Gleitschuhhals 6c, connected to the slide shoe 6 together.
  • FIGS. 3 and 4 are formed on the first component B1 of the ball joint head 6a and the Gleitschuhhals 6c and is formed on the second component B2, the Gleitschuhplatte 6b.
  • the second component B2 is formed as a circular plate 30.
  • the two components B1, B2 with a weld SW which is arranged on the facing end faces between the Gleitschuhhals 6c and formed as a circular plate 30 Gleitschuhplatte 6b, connected to the slide shoe 6 together.
  • the second component B2 is formed as an annular disc 31, which is provided with a bore 32 into which the first component B1 can be inserted with the pin-shaped Gleitschuhhals 6c.
  • the two components B1, B2 with a weld SW, between the outer surface of the Gleitschuhhalses 6c and the inner wall of the Bore 32 of the formed as an annular disc 31 Gleitschuhplatte 6 b is arranged, connected to each other to the sliding block 6.
  • the first component B1 is made of a higher strength material such as steel
  • the second component B2 is made of a lower strength material such as brass or aluminum.
  • the ball joint head 6a of the sliding shoes 6 is designed as a ball 26 of the ball joint 25.
  • the cap 27 of the ball joint 25 is then as in the FIG. 1 shown, arranged on the piston 5.
  • the invention is not limited to this arrangement of the ball 26 and cap 27.
  • the ball joint head 6a of the sliding blocks 6 can be designed as a calotte 27 of the ball joint 25.
  • the ball 26 of the ball joint 25 is then arranged on the piston 5.
  • the first component B1 on which the ball joint head 6a is arranged consists of a material of higher strength and higher density
  • a high strength is achieved at the ball joint 25 between piston 5 and sliding shoe 6 that the piston 5 can be acted upon by high pressures and thus a high power density of the displacement machine 1 can be achieved.
  • the second component B2 consists of a material of lower strength and lower density
  • the components B1, B2 different strength and different density with little manufacturing effort to slide shoes. 6 be welded, so that bimetallic and light sliding shoes 6 according to the invention can be produced with little manufacturing effort.
  • the two components B1, B2 are introduced in the region of the joint in an annular coil, at which a magnetic field (electromagnetic pulse) is generated during magnetic pulse welding.
  • a magnetic field electromagnettic pulse
  • the weld SW is generated between the two components B1, B2.
  • Sliding shoes 6 produced in accordance with the invention can also be used in axial-piston machines of bent-axis design or in radial-piston machines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Herstellung eines Gleitschuhs (6) einer hydrostatischen Verdrängermaschine (1), insbesondere einer Axialkolbenmaschine, der an einem druckbeaufschlagten Kolben (5) gelenkig befestigbar ist und den Kolben (5) an einer huberzeugenden Lauffläche (7) abstützt, wobei der Gleitschuh (6) aus einem Kugelgelenkkopf (6a), mit dem der Gleitschuh (6) an dem Kolben (5) gelenkig befestigt ist, einer Gleitschuhplatte (6b), mit der der Gleitschuh (6) an der Lauffläche (7) abgestützt ist, und einem Gleitschuhhals (6c) besteht, der zwischen dem Kugelgelenkkopf (6a) und der Gleitschuhplatte (6b) ausgebildet ist. Der Gleitschuh (6) wird von mehreren Bauteilen (B1, B2) unterschiedlicher Dichte gebildet, wobei die Bauteile (B1, B2) durch Magnetpulsschweißen zu dem Gleitschuh (6) verbunden werden.The invention relates to a method for producing a sliding shoe (6) of a hydrostatic displacement machine (1), in particular an axial piston machine, which is articulated to a pressurized piston (5) and supports the piston (5) on a treading surface (7) the slide shoe (6) consists of a ball joint head (6a) with which the slide shoe (6) is articulated to the piston (5), a shoe plate (6b) with which the slide shoe (6) is supported on the running surface (7) , and a shoe neck (6c) formed between the ball joint head (6a) and the shoe plate (6b). The sliding block (6) is formed by a plurality of components (B1, B2) of different density, the components (B1, B2) being connected to the sliding block (6) by magnetic pulse welding.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Gleitschuhs einer hydrostatischen Verdrängermaschine, insbesondere einer Axialkolbenmaschine, der an einem druckbeaufschlagten Kolben gelenkig befestigbar ist und den Kolben an einer huberzeugenden Lauffläche abstützt, wobei der Gleitschuh aus einem Kugelgelenkkopf, mit dem der Gleitschuh an dem Kolben gelenkig befestigt ist, einer Gleitschuhplatte, mit der der Gleitschuh an der Lauffläche abgestützt ist, und einem Gleitschuhhals besteht, der zwischen dem Kugelgelenkkopf und der Gleitschuhplatte ausgebildet ist.The invention relates to a method for producing a sliding block of a hydrostatic displacement machine, in particular an axial piston machine, which is articulated to a pressurized piston and supports the piston on a thrust-generating tread, wherein the sliding block of a ball joint head, with which the shoe attached to the piston articulated is a Gleitschuhplatte with which the sliding shoe is supported on the tread, and a Gleitschuhhals formed between the ball joint head and the Gleitschuhplatte.

Hydrostatische Verdrängermaschinen, insbesondere Axialkolbenmaschinen, weisen im Bereich der Abstützung der Kolben an einer huberzeugenden Lauffläche eine Gleitlagerstelle auf. Diese Abstützung der Kolben an einer huberzeugenden Lauffläche erfolgt über Gleitschuhe als Abstützelemente. Die Gleitschuhe sind an den druckbeaufschlagten Kolben jeweils mittels eines Kugelgelenks gelenkig befestigt. Aufgrund der hohen anpressenden und aus der Druckbeaufschlagung der Kolben resultierenden Kräfte kann zusätzlich eine hydrostatische Entlastung an der Gleitlagerstelle zwischen den Gleitschuhen und der Lauffläche ausgebildet sein. Um die Gleiteigenschaften des Gleitschuhs bei der Relativbewegung an der drehfesten Lauffläche zu verbessern und einen geringen Verschleiß zu erzielen, vor allem in einer Anlaufphase bis zum Aufbau einer hydrostatischen Entlastung, ist es bereits bekannt, an den Stirnflächen der Gleitschuhe, mit denen der entsprechende Gleitschuh an der Lauffläche als Gegenpart abgestützt ist, eine tribologisch günstige Schicht vorzusehen, die mit dem Werkstoff der Lauffläche eine für die Gleiteigenschaften günstige Paarung bildet.Hydrostatic displacement machines, in particular axial piston machines, have a sliding bearing point in the region of the support of the pistons on a thrust-generating running surface. This support of the piston on a thrust-generating running surface via sliding blocks as support elements. The shoes are hinged to the pressurized piston each by means of a ball joint. Due to the high pressure and resulting from the pressurization of the piston forces may be additionally formed a hydrostatic discharge at the sliding bearing between the shoes and the tread. In order to improve the sliding properties of the sliding block in the relative movement of the non-rotatable tread and to achieve low wear, especially in a start-up phase to build a hydrostatic discharge, it is already known at the end faces of the shoes, with which the corresponding shoe to the tread is supported as a counterpart to provide a tribologically favorable layer that forms a favorable pairing with the material of the tread for the sliding properties.

Bekannte Gleitschuhe bestehen aus einem Kugelgelenkkopf, mit dem der Gleitschuh an dem Kolben gelenkig befestigt ist, einer Gleitschuhplatte, mit der der Gleitschuh an der Lauffläche abgestützt ist und an der die tribologisch günstige Schicht aufgebracht sein kann, und einem Gleitschuhhals, der zwischen dem Kugelgelenkkopf und der Gleitschuhplatte ausgebildet ist. Bei bekannten Gleitschuhen ist der Kugelgelenkkopf, der Gleitschuhhals und die Gleitschuhplatte von einem einteiligen Stahlkörper gebildet. Die Gleitschuhe bestehen somit aus einem Vollmaterial. Sofern erforderlich, kann an der Stirnseite der Gleitschuhplatte noch ein tribologisch günstiges Material auf den Stahlkörper gefügt werden.Known sliding blocks consist of a ball joint head, with which the shoe is hinged to the piston, a Gleitschuhplatte with which the shoe is supported on the tread and on which the tribologically favorable layer can be applied, and a Gleitschuhhals, between the ball joint head and of the Sliding plate is formed. In known sliding shoes of the ball joint head, the Gleitschuhhals and the Gleitschuhplatte is formed of a one-piece steel body. The shoes are thus made of a solid material. If necessary, a tribologically favorable material can be added to the steel body on the front side of the shoe plate.

Derartige aus Vollmaterial bestehende und somit einteilige Gleitschuhe führen im Betrieb der Verdrängermaschine bei einer rotierenden Zylindertrommel, in der die Kolben mit den Gleitschuhen längsverschiebbar angeordnet sind, zu hohen Massenkräften. Aufgrund der hohen Massenkräfte treten an den Gleitschuhen bei höheren Drehzahlen der Zylindertrommel im Betrieb der Verdrängermaschine hohe Fliehkräfte auf, die zum Abkippen der Gleitschuhe von der Lauffläche führen können. Das Abkippen der Gleitschuhe von der Lauffläche kann zu Beschädigungen an der Verdrängermaschine führen. Die Massenkräfte der Gleitschuhe können verringert werden, wenn der Gleitschuh aus einem Material mit geringerer Dichte und geringerer Festigkeit hergestellt wird, beispielsweise Aluminium. Da jedoch an dem Kugelgelenk zwischen Kolben und Gleitschuh aufgrund der Kräfte an den druckbeaufschlagten Kolben hohe Belastungen auftreten, führt ein aus Aluminium hergestellter Gleitschuh zu einer geringeren Leistungsdichte der Verdrängermaschine, da die Kolben nur von geringeren Drücken beaufschlagt werden können.Such made of solid material and thus one-piece sliding lead in operation of the positive displacement machine in a rotating cylinder drum in which the pistons are arranged longitudinally displaceable with the sliding shoes, to high inertial forces. Due to the high mass forces occur at the sliding blocks at higher speeds of the cylinder drum during operation of the positive displacement machine high centrifugal forces, which can lead to tipping of the sliding shoes of the tread. The tilting of the sliding shoes from the running surface can lead to damage to the displacement machine. The inertial forces of the sliding shoes can be reduced if the sliding block is made of a material of lower density and lower strength, for example aluminum. However, since high loads occur at the ball joint between piston and sliding shoe due to the forces on the pressurized piston, a shoe made of aluminum leads to a lower power density of the positive displacement machine, since the pistons can only be acted upon by lower pressures.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Gleitschuhs der eingangs genannten Gattung zur Verfügung zu stellen, mit dem bei geringem Herstellaufwand ein Gleitschuh hergestellt werden kann, der bei hohen Drehzahlen geringe Massenkräfte aufweist.The present invention has for its object to provide a method for producing a shoe of the type mentioned available, with a low production cost, a shoe can be produced, which has low mass forces at high speeds.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Gleitschuh von mehreren Bauteilen unterschiedlicher Dichte gebildet wird, wobei die Bauteile durch Magnetpulsschweißen zu dem Gleitschuh verbunden werden. Erfindungsgemäß wird somit der Gleitschuh, der aus dem Kugelgelenkkopf, der Gleitschuhplatte und dem Gleitschuhhals besteht, von mehreren und somit mindestens zwei Bauteilen gebildet, die unterschiedliche Dichte aufweisen. Die Bauteile und somit Materialen unterschiedlicher Dichte werden erfindungsgemäß durch Magnetpulsschweißen zu einem Gleitschuh verschweißt. Beim Magnetpulsumformen wird ein magnetischer Puls erzeugt, durch dessen Energieeintrag Bauteile und somit Materialen unterschiedlicher Dichte mit geringem Herstellaufwand miteinander verschweißt werden können. Durch das Magnetpulsschweißen mehrerer Bauteile unterschiedlicher Dichte zu einem Gleitschuh wird es ermöglicht, einen leichten Gleitschuh, auf den bei hohen Drehzahlen nur geringe Massenkräfte und Fliehkräfte wirken, mit geringem Herstellaufwand herzustellen. Bei dem erfindungsgemäßen Gleitschuh werden die bei hohen Drehzahlen auf den Gleitschuh wirkenden Massenkräfte verringert, wodurch der Lauf der erfindungsgemäßen Gleitschuhe auf der Lauffläche verbessert werden kann und ein Abkippen der Gleitschuhe von der Lauffläche verhindert werden kann.This object is achieved in that the shoe is formed by a plurality of components of different density, wherein the components are connected by magnetic pulse welding to the shoe. According to the invention, the sliding shoe, which consists of the ball joint head, the Gleitschuhplatte and the Gleitschuhhals, thus formed by a plurality and thus at least two components having different density. The components and thus materials of different density are inventively welded by magnetic pulse welding to form a shoe. In Magnetpulsumformen a magnetic pulse is generated by its energy input components and thus different materials Density can be welded together with little effort. Magnetic pulse welding of a plurality of components of different density to form a sliding shoe makes it possible to manufacture a lightweight sliding shoe, on which only small mass forces and centrifugal forces act at high rotational speeds, with little manufacturing effort. In the sliding shoe according to the invention, the mass forces acting on the sliding shoe at high speeds are reduced, as a result of which the running of the sliding shoes according to the invention on the running surface can be improved and tipping of the sliding shoes from the running surface can be prevented.

Gemäß einer vorteilhaften Ausführungsform der Erfindung wird der Gleitschuh aus einem ersten Bauteil, an dem der Kugelgelenkkopf ausgebildet ist, und aus einem zweiten Bauteil gebildet, an dem der Gleitschuhhals und die Gleitschuhplatte ausgebildet sind, wobei das erste Bauteil und das zweite Bauteil durch Magnetpulsschweißen zu dem Gleitschuh verbunden und somit verschweißt werden.According to an advantageous embodiment of the invention, the sliding block is formed from a first component, on which the ball joint head is formed, and from a second component, on which the Gleitschuhhals and the Gleitschuhplatte are formed, wherein the first component and the second component by magnetic pulse welding to the Sliding shoe connected and thus welded.

Gemäß einer alternativen und ebenfalls vorteilhaften Ausführungsform der Erfindung wird der Gleitschuh aus einem ersten Bauteil, an dem der Kugelgelenkkopf und der Gleitschuhhals ausgebildet sind, und aus einem zweiten Bauteil gebildet, an dem die Gleitschuhplatte ausgebildet ist, wobei das erste Bauteil und das zweite Bauteil durch Magnetpulsschweißen zu dem Gleitschuh verbunden und somit verschweißt werden.According to an alternative and also advantageous embodiment of the invention, the sliding block is formed from a first component, on which the ball joint head and the Gleitschuhhals are formed, and from a second component, on which the Gleitschuhplatte is formed, wherein the first component and the second component by Magnetic pulse welding are connected to the shoe and thus welded.

Bei einem derartigen Gleitschuh, bei dem an dem zweiten Bauteil nur die Gleitschuhplatte ausgebildet ist, kann das zweite Bauteil gemäß einer vorteilhaften Ausgestaltungsform der Erfindung als kreisförmige Platte oder als ringförmige Scheibe ausgebildet sein.In such a shoe, in which only the Gleitschuhplatte is formed on the second component, the second component may be formed according to an advantageous embodiment of the invention as a circular plate or as an annular disc.

Gemäß einer vorteilhaften Ausgestaltungsform bestehen das erste Bauteil aus einem Material höherer Festigkeit, insbesondere Stahl, und das zweite Bauteil aus einem Material mit niedrigerer Festigkeit, insbesondere Messing oder Aluminium. An dem ersten Bauteil, das mit dem Kugelgelenkkopf versehen ist und aus einem Material höherer Festigkeit besteht, wird an dem Kugelgelenk zwischen Kolben und Gleitschuh eine hohe Festigkeit erzielt, so dass die Kolben von hohen Drücken beaufschlagt werden können und somit eine hohe Leistungsdichte der Verdrängermaschine erzielt werden kann. Mit dem zweiten Bauteil, das aus einem Material mit niedrigerer Festigkeit und niedrigerer Dichte besteht, wird es ermöglicht, die auf den Gleitschuh bei hohen Drehzahlen der Verdrängermaschine wirkenden Massenkräfte zu verringern.According to an advantageous embodiment, the first component consists of a material of higher strength, in particular steel, and the second component of a material with lower strength, in particular brass or aluminum. At the first component, which is provided with the ball joint head and consists of a material of higher strength, a high strength is achieved at the ball joint between the piston and sliding shoe, so that the piston can be acted upon by high pressures and thus achieves a high power density of the displacement machine can be. With the second component, made of a material with lower Strength and lower density, it is possible to reduce the forces acting on the shoe at high speeds of the positive displacement machine mass forces.

Die Aufgabe wird auch gelöst durch einen Gleitschuh für die Abstützung eines Kolbens einer hydrostatischen Verdrängermaschine, insbesondere einer Axialkolbenmaschine, gegenüber einer huberzeugenden Lauffläche, der nach einem zuvor beschriebenen Verfahren hergestellt ist.The object is also achieved by a sliding shoe for supporting a piston of a hydrostatic displacement machine, in particular an axial piston machine, opposite to a thrust-generating running surface, which is produced by a previously described method.

Weiterhin wird die Aufgabe auch gelöst durch eine hydrostatische Verdrängermaschine, insbesondere eine Axialkolbenmaschine, mit einer um eine Drehachse drehbar angeordneten Zylindertrommel, die mit mindestens einer Kolbenausnehmung versehen ist, in der jeweils ein Kolben längsverschiebbar angeordnet ist und durch einen zuvor beschriebenen Gleitschuh gegenüber einer huberzeugenden Lauffläche abgestützt ist.Furthermore, the object is also achieved by a hydrostatic displacement machine, in particular an axial piston machine, with a rotatable about a rotation axis arranged cylindrical drum, which is provided with at least one piston recess, in each of which a piston is longitudinally displaceable and by a previously described sliding shoe against a tread producing tread is supported.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand der in den schematischen Figuren dargestellten Ausführungsbeispiele näher erläutert. Hierbei zeigt

Figur 1
eine hydrostatisches Verdrängermaschine des Standes der Technik in einem Längsschnitt,
Figur 2
eine erste Ausführungsform eines erfindungsgemäß hergestellten Gleitschuhs,
Figur 3
eine zweite Ausführungsform eines erfindungsgemäß hergestellten Gleitschuhs und
Figur 4
eine dritte Ausführungsform eines erfindungsgemäß hergestellten Gleitschuhs.
Further advantages and details of the invention will be explained in more detail with reference to the embodiments illustrated in the schematic figures. This shows
FIG. 1
a hydrostatic displacement machine of the prior art in a longitudinal section,
FIG. 2
a first embodiment of a sliding shoe produced according to the invention,
FIG. 3
a second embodiment of a sliding shoe according to the invention and
FIG. 4
a third embodiment of a sliding shoe produced according to the invention.

In der Figur 1 ist eine hydrostatische Verdrängermaschine 1 mit Gleitschuhen 6 des Standes der Technik in einem Längsschnitt dargestellt. Das dargestellte Ausführungsbeispiel zeigt eine Axialkolbenmaschine in Schrägscheibenbauweise als Beispiel einer hydrostatischen Verdrängermaschine 1.In the FIG. 1 is a hydrostatic displacement machine 1 with sliding shoes 6 of the prior art shown in a longitudinal section. The illustrated embodiment shows an axial piston machine in swash plate design as an example of a hydrostatic displacement machine. 1

Die Verdrängermaschine 1 weist eine um eine Drehachse 2 drehbar gelagerte Zylindertrommel 3 auf, die mit mehreren konzentrisch zur Drehachse 2 angeordneten Kolbenausnehmungen 4 versehen ist, die bevorzugt von Zylinderbohrungen gebildet sind und in denen jeweils ein Kolben 5 längsverschiebbar gelagert ist.The displacement machine 1 has a cylinder drum 3 rotatably mounted about a rotation axis 2, which is provided with a plurality of piston recesses 4 arranged concentrically to the rotation axis 2, which are preferably formed by cylinder bores and in each of which a piston 5 is mounted longitudinally displaceable.

Die Kolben 5 stützen sich in dem aus der Zylindertrommel 3 herausragenden Bereich mittels jeweils eines Gleitschuhs 6 als Abstützelements auf einer huberzeugenden Lauffläche 7 ab, die von einer um die Drehachse 2 drehfest angeordneten Schrägscheibe 8 gebildet ist.The pistons 5 are supported in the region projecting out of the cylindrical drum 3 by means of a respective sliding shoe 6 as a supporting element on a thrust-generating running surface 7, which is formed by a swashplate 8 arranged rotatably around the rotation axis 2.

Die Schrägscheibe 8 kann an einem Gehäuse 9 der Verdrängermaschine 1 - wie in der Figur 1 dargestellt ist - angeformt oder drehfest befestigt sein, wobei die Verdrängermaschine 1 ein festes Verdrängungsvolumen aufweist.The swash plate 8 may be attached to a housing 9 of the displacement machine 1 - as in FIG. 1 is shown - molded or rotationally fixed, wherein the displacement machine 1 has a fixed displacement volume.

Es ist alternativ möglich, die Schrägscheibe 8 in der Neigung verstellbar anzuordnen, wodurch die Verdrängermaschine 1 ein veränderbares Verdrängungsvolumen aufweist.It is alternatively possible to arrange the swash plate 8 in the inclination adjustable, whereby the displacement machine 1 has a variable displacement volume.

Die Zylindertrommel 3 stützt sich in axialer Richtung der Verdrängermaschine 1 gegenüberliegend zu der Lauffläche 7 an einem gehäuseseitigen Verteiler 10 ab, der eine Steuerfläche 11 bildet. Die Steuerfläche 11 ist mit nierenförmigen Steuerausnehmungen versehen, die die Verbindung eines Einlasskanals 14 und eines Auslasskanals 13 im Gehäuse 9 mit den Kolbenausnehmungen 4 ermöglichen.The cylinder drum 3 is supported in the axial direction of the displacement machine 1 opposite to the running surface 7 on a housing-side distributor 10, which forms a control surface 11. The control surface 11 is provided with kidney-shaped control recesses, which allow the connection of an inlet channel 14 and an outlet channel 13 in the housing 9 with the piston recesses 4.

Der Verteiler 10 kann von einem scheibenförmigen Bauteil gebildet werden, das an dem Gehäuse 9, beispielsweise einem Gehäusedeckel 9a des Gehäuses 9, drehfest befestigt ist. Alternativ kann der Verteiler 10 an dem Gehäuse 9, beispielsweise einem Gehäusedeckel 9a des Gehäuses 9 einstückig angeformt werden, so dass die Funktion der Steuerfläche 11 in das Gehäuse 9, 9a integriert ist.The distributor 10 may be formed by a disk-shaped component, which is fastened in a rotationally fixed manner to the housing 9, for example a housing cover 9a of the housing 9. Alternatively, the distributor 10 can be integrally formed on the housing 9, for example, a housing cover 9a of the housing 9, so that the function of the control surface 11 is integrated into the housing 9, 9a.

Die Steuerfläche 11 kann wie in der Figur 1 dargestellt eben oder auch sphärisch sein.The control surface 11 may as in the FIG. 1 be flat or spherical.

Die Zylindertrommel 3 ist von einer zentrischen Bohrung durchsetzt, durch die eine konzentrisch zur Drehachse 2 angeordnete Triebwelle 15 durch die Zylindertrommel 3 geführt ist. Die Triebwelle 15 ist mittels Lagerungen 16, 17 im Gehäuse 9, 9a drehbar gelagert.The cylindrical drum 3 is penetrated by a central bore, through which a concentric to the axis of rotation 2 arranged drive shaft 15 through the cylinder drum. 3 is guided. The drive shaft 15 is rotatably supported by bearings 16, 17 in the housing 9, 9a.

Die Zylindertrommel 3 ist mittels einer Mitnahmeverzahnung 18 mit der Triebwelle 15 drehfest, jedoch axial verschiebbar verbunden. Weiterhin dargestellt ist eine Anpressfeder 19, die die Zylindertrommel 3 in axialer Richtung an die Steuerfläche 11 anpresst und abstützt.The cylinder drum 3 is rotatably by means of a driving toothing 18 with the drive shaft 15, but axially slidably connected. Also shown is a pressure spring 19 which presses and supports the cylinder drum 3 in the axial direction against the control surface 11.

Die Gleitschuhe 6 sind mittels eines als Kugelgelenk 25 ausgebildeten Gleitschuhgelenks mit dem jeweiligen Kolben 5 gelenkig verbunden.The sliding blocks 6 are connected by means of a ball joint 25 formed as a sliding joint with the respective piston 5 hinged.

Das Kugelgelenk 25 zwischen dem Kolben 5 und dem Gleitschuh 6 besteht aus einer Kugel 26 und einer Kalotte 27. Die Befestigung der Kugel 26 in der Kalotte 27 erfolgt beispielsweise durch eine formschlüssige Verbindung, in dem ein Randbereich der Kalotte 27 verformt wird, um die Kugel 26 formschlüssig zu umschließen.The ball joint 25 between the piston 5 and the shoe 6 consists of a ball 26 and a cap 27. The attachment of the ball 26 in the cap 27, for example, by a positive connection, in which an edge region of the cap 27 is deformed to the ball 26 enclose a positive fit.

Die Gleitschuhe 6 bestehen aus einem Kugelgelenkkopf 6a, mit dem der Gleitschuh 6 an dem Kolben 5 gelenkig befestigt ist, einer Gleitschuhplatte 6b, mit der der Gleitschuh 6 an der Lauffläche 7 abgestützt ist, und einem Gleitschuhhals 6c, der zwischen dem Kugelgelenkkopf 6a und der Gleitschuhplatte 6b ausgebildet ist. Bei bekannten Gleitschuhen 6 des Standes der Technik ist der Kugelgelenkkopf 6a, der Gleitschuhhals 6c und die Gleitschuhplatte 6b von einem einteiligen Stahlkörper gebildet, so dass der Gleitschuh 6 aus einem Vollmaterial besteht.The sliding blocks 6 consist of a ball joint head 6a, with which the sliding block 6 is pivotally attached to the piston 5, a Gleitschuhplatte 6b, with the sliding shoe 6 is supported on the tread 7, and a Gleitschuhhals 6c, between the ball joint head 6a and the Sliding plate 6b is formed. In known sliding shoes 6 of the prior art, the ball joint head 6a, the Gleitschuhhals 6c and the Gleitschuhplatte 6b is formed by a one-piece steel body, so that the sliding block 6 consists of a solid material.

Im Betrieb der Verdrängermaschine 1 bei rotierender Zylindertrommel 3 bilden die Gleitschuhe 6 und die Lauffläche 7 eine Gleitlagerstelle, an der zwischen den mit der Zylindertrommel 3 und den Kolben 5 mitrotierenden Gleitschuhen 6 und der drehfest am Gehäuse 9 befestigten Lauffläche 7 eine Relativbewegung auftritt. Zur Verringerung der Reibung und des Verschleißes kann an der der Lauffläche 7 zugewandten Stirnseite der Gleitschuhplatte 6b jeweils eine Lagermetallschicht 28, beispielsweise eine Messingplatte, als tribologisch günstiger Lagermetallwerkstoff gefügt werden. Zusätzlich sind die Gleitschuhe 6 an der Lauffläche 7 hydrostatisch entlastet.During operation of the displacement machine 1 with rotating cylinder drum 3, the sliding shoes 6 and the running surface 7 form a sliding bearing point, on which a relative movement occurs between the sliding shoes 6 co-rotating with the cylinder drum 3 and the piston 5 and the running surface 7 secured against rotation on the housing 9. In order to reduce friction and wear, a bearing metal layer 28, for example a brass plate, can be added to the end face of the sliding shoe plate 6b facing the running surface 7 as a tribologically favorable bearing metal material. In addition, the sliding shoes 6 are hydrostatically relieved at the tread 7.

Ein Abheben und/oder Abkippen der Gleitschuhe 6 von der Lauffläche 7 wird durch eine Niederhaltevorrichtung 20 vermieden. Die Niederhaltevorrichtung 20 ist im dargestellten Ausführungsbeispiel als Niederhaltescheibe ausgebildet, die mit Anlageflächen an dem Gleitschuh 6 zusammenwirkt.Lifting and / or tipping the sliding shoes 6 from the tread 7 is avoided by a hold-down device 20. The hold-down device 20 is formed in the illustrated embodiment as a hold-down disc, which cooperates with contact surfaces on the slide shoe 6.

In den Figuren 2 bis 4 sind erfindungsgemäße Gleitschuhe 6 dargestellt.In the FIGS. 2 to 4 sliding shoes 6 according to the invention are shown.

Die erfindungsgemäßen Gleitschuhe 6 in den Figuren 2 bis 4 sind von mehreren, in den dargestellten Ausführungsbeispielen von jeweils zwei Bauteilen B1, B2, unterschiedlicher Dichte gebildet, die durch Magnetpulsschweißen zu dem Gleitschuh 6 verbunden und somit verschweißt werden. Durch Magnetpulsschweißen werden die Bauteile B1, B2 durch Schweißnähte SW miteinander verschweißt.The sliding blocks 6 according to the invention in the FIGS. 2 to 4 are formed of several, in the illustrated embodiments of two components B1, B2, different density, which are connected by magnetic pulse welding to the shoe 6 and thus welded. By magnetic pulse welding, the components B1, B2 welded together by welds SW.

In dem Ausführungsbeispiel der Figur 2 ist an dem ersten Bauteil B1 der Kugelgelenkkopf 6a ausgebildet und sind an dem zweiten Bauteil B2 der Gleitschuhhals 6c und die Gleitschuhplatte 6b ausgebildet. Durch das Magnetpulsschweißen werden die beiden Bauteile B1, B2 mit einer Schweißnaht SW, die an den zugewandten Stirnseiten zwischen dem Kugelgelenkkopf 6a und dem Gleitschuhhals 6c angeordnet ist, miteinander zu dem Gleitschuh 6 verbunden.In the embodiment of FIG. 2 is formed on the first component B1 of the ball joint head 6a and are formed on the second component B2 of the Gleitschuhhals 6c and the Gleitschuhplatte 6b. By the magnetic pulse welding, the two components B1, B2 with a weld SW, which is arranged on the facing end faces between the ball joint head 6a and the Gleitschuhhals 6c, connected to the slide shoe 6 together.

In den Ausführungsbeispielen der Figuren 3 und 4 sind an dem ersten Bauteil B1 der Kugelgelenkkopf 6a und der Gleitschuhhals 6c ausgebildet und ist an dem zweiten Bauteil B2 die Gleitschuhplatte 6b ausgebildet.In the embodiments of the FIGS. 3 and 4 are formed on the first component B1 of the ball joint head 6a and the Gleitschuhhals 6c and is formed on the second component B2, the Gleitschuhplatte 6b.

In dem Ausführungsbeispiel der Figur 4 ist das zweite Bauteil B2 als kreisförmige Platte 30 ausgebildet. Durch das Magnetpulsschweißen werden die beiden Bauteile B1, B2 mit einer Schweißnaht SW, die an den zugewandten Stirnseiten zwischen dem Gleitschuhhals 6c und der als kreisförmige Platte 30 ausgebildeten Gleitschuhplatte 6b angeordnet ist, miteinander zu dem Gleitschuh 6 verbunden.In the embodiment of FIG. 4 the second component B2 is formed as a circular plate 30. By the magnetic pulse welding, the two components B1, B2 with a weld SW, which is arranged on the facing end faces between the Gleitschuhhals 6c and formed as a circular plate 30 Gleitschuhplatte 6b, connected to the slide shoe 6 together.

In dem Ausführungsbeispiel der Figur 3 ist das zweite Bauteil B2 als ringförmige Scheibe 31 ausgebildet, die mit einer Bohrung 32 versehen ist, in die das erste Bauteil B1 mit dem zapfenförmigen Gleitschuhhals 6c eingeschoben werden kann. Durch das Magnetpulsschweißen werden die beiden Bauteile B1, B2 mit einer Schweißnaht SW, die zwischen der Mantelfläche des Gleitschuhhalses 6c und der Innenwand der Bohrung 32 der als ringförmige Scheibe 31 ausgebildeten Gleitschuhplatte 6b angeordnet ist, miteinander zu dem Gleitschuh 6 verbunden.In the embodiment of FIG. 3 the second component B2 is formed as an annular disc 31, which is provided with a bore 32 into which the first component B1 can be inserted with the pin-shaped Gleitschuhhals 6c. By the magnetic pulse welding, the two components B1, B2 with a weld SW, between the outer surface of the Gleitschuhhalses 6c and the inner wall of the Bore 32 of the formed as an annular disc 31 Gleitschuhplatte 6 b is arranged, connected to each other to the sliding block 6.

Bei den Gleitschuhen der Figuren 2 bis 4 besteht das erste Bauteil B1 aus einem Material höherer Festigkeit, beispielsweise Stahl, und das zweite Bauteil B2 aus einem Material mit niedrigerer Festigkeit, beispielsweise Messing oder Aluminium.In the sliding shoes of FIGS. 2 to 4 For example, the first component B1 is made of a higher strength material such as steel, and the second component B2 is made of a lower strength material such as brass or aluminum.

In den Figuren 2 bis 4 ist der Kugelgelenkkopf 6a der Gleitschuhe 6 als Kugel 26 des Kugelgelenks 25 ausgeführt. Die Kalotte 27 des Kugelgelenks 25 ist dann wie in der Figur 1 dargestellt, an dem Kolben 5 angeordnet. Die Erfindung ist jedoch nicht auf diese Anordnung der Kugel 26 und Kalotte 27 beschränkt. Alternativ kann der Kugelgelenkkopf 6a der Gleitschuhe 6 als Kalotte 27 des Kugelgelenks 25 ausgeführt sein. Die Kugel 26 des Kugelgelenks 25 ist dann an dem Kolben 5 angeordnet.In the FIGS. 2 to 4 the ball joint head 6a of the sliding shoes 6 is designed as a ball 26 of the ball joint 25. The cap 27 of the ball joint 25 is then as in the FIG. 1 shown, arranged on the piston 5. However, the invention is not limited to this arrangement of the ball 26 and cap 27. Alternatively, the ball joint head 6a of the sliding blocks 6 can be designed as a calotte 27 of the ball joint 25. The ball 26 of the ball joint 25 is then arranged on the piston 5.

An den zweiten Bauteilen B2, an denen die Gleitschuhplatte 6b ausgebildet ist, ist in den Ausführungsbeispielen der Figuren 2 bis 4 weiterhin jeweils eine Anlagefläche 35 für eine Niederhaltevorrichtung 20 ausgebildet.At the second components B2, on which the Gleitschuhplatte 6b is formed, is in the embodiments of the FIGS. 2 to 4 Furthermore, in each case a contact surface 35 for a hold-down device 20 is formed.

Bei den erfindungsgemäßen, bimetallischen Gleitschuhen 6, bei denen das erste Bauteil B1, an dem der Kugelgelenkkopf 6a angeordnet ist, aus einem Material höherer Festigkeit und höherer Dichte besteht, wird an dem Kugelgelenk 25 zwischen Kolben 5 und Gleitschuh 6 eine hohe Festigkeit erzielt, so dass die Kolben 5 von hohen Drücken beaufschlagt werden können und somit eine hohe Leistungsdichte der Verdrängermaschine 1 erzielt werden kann. Bei den erfindungsgemäßen, bimetallischen Gleitschuhe 6, bei denen das zweiten Bauteil B2 aus einem Material mit niedrigerer Festigkeit und niedrigerer Dichte besteht, wird es ermöglicht, die auf den Gleitschuh 6 bei hohen Drehzahlen der Verdrängermaschine 1 wirkenden Massenkräfte zu verringern. Durch die verringerten Massenkräfte an den erfindungsgemäßen Gleitschuhen 6 kann der Lauf der Gleitschuhe 6 an der Lauffläche 7 verbessert werden und die Gefahr des Abkippens der Gleitschuhe 6 von der Lauffläche 7 verringert werden.In the case of the bimetallic sliding shoes 6 according to the invention, in which the first component B1, on which the ball joint head 6a is arranged, consists of a material of higher strength and higher density, a high strength is achieved at the ball joint 25 between piston 5 and sliding shoe 6 that the piston 5 can be acted upon by high pressures and thus a high power density of the displacement machine 1 can be achieved. In the case of the bimetallic sliding shoes 6 according to the invention, in which the second component B2 consists of a material of lower strength and lower density, it is possible to reduce the mass forces acting on the sliding shoe 6 at high rotational speeds of the displacement machine 1. Due to the reduced mass forces on the sliding shoes 6 according to the invention, the running of the sliding shoes 6 on the running surface 7 can be improved and the risk of the sliding shoes 6 tipping off the running surface 7 can be reduced.

Durch Magnetpulsschweißen können die Bauteile B1, B2 unterschiedlicher Festigkeit und unterschiedlicher Dichte mit geringem Herstellaufwand zu Gleitschuhen 6 verschweißt werden, so dass erfindungsgemäße bimetallische und leichte Gleitschuhe 6 mit geringem Herstellaufwand hergestellt werden können.By magnetic pulse welding, the components B1, B2 different strength and different density with little manufacturing effort to slide shoes. 6 be welded, so that bimetallic and light sliding shoes 6 according to the invention can be produced with little manufacturing effort.

Die beiden Bauteile B1, B2 werden hierzu im Bereich der Fügestelle in eine ringförmige Spule eingeführt, an der beim Magnetpulsschweißen ein Magnetfeld (elektromagnetischer Puls) erzeugt wird. Durch Aufbringen des Magnetfeldes beim Magnetpulsumformen wird die Schweißnaht SW zwischen den beiden Bauteilen B1, B2 erzeugt.For this purpose, the two components B1, B2 are introduced in the region of the joint in an annular coil, at which a magnetic field (electromagnetic pulse) is generated during magnetic pulse welding. By applying the magnetic field during magnetic pulse forming, the weld SW is generated between the two components B1, B2.

Erfindungsgemäß hergestellte Gleitschuhe 6 können ebenfalls bei Axialkolbenmaschine in Schrägachsenbauweise oder bei Radialkolbenmaschinen Verwendung finden.Sliding shoes 6 produced in accordance with the invention can also be used in axial-piston machines of bent-axis design or in radial-piston machines.

Claims (7)

Verfahren zur Herstellung eines Gleitschuhs (6) einer hydrostatischen Verdrängermaschine (1), insbesondere einer Axialkolbenmaschine, der an einem druckbeaufschlagten Kolben (5) gelenkig befestigbar ist und den Kolben (5) an einer huberzeugenden Lauffläche (7) abstützt, wobei der Gleitschuh (6) aus einem Kugelgelenkkopf (6a), mit dem der Gleitschuh (6) an dem Kolben (5) gelenkig befestigt ist, einer Gleitschuhplatte (6b), mit der der Gleitschuh (6) an der Lauffläche (7) abgestützt ist, und einem Gleitschuhhals (6c) besteht, der zwischen dem Kugelgelenkkopf (6a) und der Gleitschuhplatte (6b) ausgebildet ist, dadurch gekennzeichnet, dass der Gleitschuh (6) von mehreren Bauteilen (B1, B2) unterschiedlicher Dichte gebildet wird, wobei die Bauteile (B1, B2) durch Magnetpulsschweißen zu dem Gleitschuh (6) verbunden werden.Method for producing a sliding shoe (6) of a hydrostatic displacement machine (1), in particular an axial piston machine, which is articulated to a pressurized piston (5) and supports the piston (5) on a thrust-generating running surface (7), wherein the sliding shoe (6 ) from a ball joint head (6a), with which the sliding shoe (6) is articulated to the piston (5), a Gleitschuhplatte (6b), with which the sliding shoe (6) on the running surface (7) is supported, and a Gleitschuhhals (6c), which is formed between the ball joint head (6a) and the Gleitschuhplatte (6b), characterized in that the sliding block (6) of a plurality of components (B1, B2) of different density is formed, wherein the components (B1, B2 ) are connected by magnetic pulse welding to the sliding block (6). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Gleitschuh (6) aus einem ersten Bauteil (B1), an dem der Kugelgelenkkopf (6a) ausgebildet ist, und aus einem zweiten Bauteil (B2) gebildet wird, an dem der Gleitschuhhals (6c) und die Gleitschuhplatte (6b) ausgebildet sind, wobei das erste Bauteil (B1) und das zweite Bauteil (B2) durch Magnetpulsschweißen zu dem Gleitschuh (6) verbunden werden.A method according to claim 1, characterized in that the sliding shoe (6) consists of a first component (B1), on which the ball joint head (6a) is formed, and of a second component (B2) is formed, on which the Gleitschuhhals (6c) and the shoe plate (6b) are formed, wherein the first component (B1) and the second component (B2) are connected by magnetic pulse welding to the sliding shoe (6). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Gleitschuh (6) aus einem ersten Bauteil (B1), an dem der Kugelgelenkkopf (6a) und der Gleitschuhhals (6c) ausgebildet sind, und aus einem zweiten Bauteil (B2) gebildet wird, an dem die Gleitschuhplatte (6b) ausgebildet ist, wobei das erste Bauteil (B1) und das zweite Bauteil (B2) durch Magnetpulsschweißen zu dem Gleitschuh (6) verbunden werden.A method according to claim 1, characterized in that the sliding shoe (6) consists of a first component (B1) on which the ball joint head (6a) and the Gleitschuhhals (6c) are formed, and from a second component (B2) is formed on wherein the sliding shoe plate (6b) is formed, wherein the first component (B1) and the second component (B2) are connected to the sliding shoe (6) by magnetic pulse welding. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass das zweite Bauteil (B2) als kreisförmige Platte (30) oder als ringförmige Scheibe (31) ausgebildet ist.A method according to claim 3, characterized in that the second component (B2) as a circular plate (30) or as an annular disc (31) is formed. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste Bauteil (B1) aus einem Material höherer Festigkeit, insbesondere Stahl, und das zweite Bauteil (B2) aus einem Material mit niedrigerer Festigkeit, insbesondere Messing oder Aluminium, besteht.Method according to one of claims 1 to 4, characterized in that the first component (B1) made of a material of higher strength, in particular steel, and the second component (B2) consists of a material with lower strength, in particular brass or aluminum. Gleitschuh (6) für die Abstützung eines Kolbens (5) einer hydrostatischen Verdrängermaschine (1), insbesondere einer Axialkolbenmaschine, gegenüber einer huberzeugenden Lauffläche (7), der nach einem Verfahren nach einem der vorhergehenden Ansprüche hergestellt ist.Sliding shoe (6) for the support of a piston (5) of a hydrostatic displacement machine (1), in particular an axial piston machine, opposite a thrust-generating running surface (7), which is produced by a method according to one of the preceding claims. Hydrostatische Verdrängermaschine (1), insbesondere eine Axialkolbenmaschine, mit einer um eine Drehachse (2) drehbar angeordneten Zylindertrommel (3), die mit mindestens einer Kolbenausnehmung (4) versehen ist, in der jeweils ein Kolben (5) längsverschiebbar angeordnet ist und durch einen Gleitschuh (6) nach Anspruch 6 gegenüber einer huberzeugenden Lauffläche (7) abgestützt ist.Hydrostatic displacement machine (1), in particular an axial piston machine, with a about an axis of rotation (2) rotatably mounted cylindrical drum (3) which is provided with at least one piston recess (4), in each of which a piston (5) is longitudinally displaceable and by a Sliding shoe (6) according to claim 6 with respect to a thrust-generating running surface (7) is supported.
EP17193761.8A 2016-10-12 2017-09-28 Method for producing a sliding block of a hydrostatic displacement machine Active EP3309392B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH716310A1 (en) * 2019-06-12 2020-12-15 Urben & Kyburz Ag Component of a piston machine and method for manufacturing the component.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262269A1 (en) * 2001-05-31 2002-12-04 Dana Corporation Method for performing a magnetic pulse welding operation using a plurality of magnetic inductors
DE10306792A1 (en) * 2003-01-23 2004-08-19 Zexel Valeo Compressor Europe Gmbh Piston especially for axial piston compressor for motor vehicle's air conditioning unit consists of hollow cylindrical skirt and support or shoe for piston rod interconnected by magnetic pulse welding
DE102008012761A1 (en) * 2008-03-05 2009-09-17 Ab Skf Component for roller bearing, comprises two elements, where one element is provided on rolling element for unrolling, and both elements are connected from electrically conductive material in area
DE102012108014A1 (en) * 2012-08-30 2014-03-06 Linde Hydraulics Gmbh & Co. Kg Sliding shoe for hydrostatic axial piston machine, has central tube portion that is surrounded by cavity extending from the ball joint to pressure pocket

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262269A1 (en) * 2001-05-31 2002-12-04 Dana Corporation Method for performing a magnetic pulse welding operation using a plurality of magnetic inductors
DE10306792A1 (en) * 2003-01-23 2004-08-19 Zexel Valeo Compressor Europe Gmbh Piston especially for axial piston compressor for motor vehicle's air conditioning unit consists of hollow cylindrical skirt and support or shoe for piston rod interconnected by magnetic pulse welding
DE102008012761A1 (en) * 2008-03-05 2009-09-17 Ab Skf Component for roller bearing, comprises two elements, where one element is provided on rolling element for unrolling, and both elements are connected from electrically conductive material in area
DE102012108014A1 (en) * 2012-08-30 2014-03-06 Linde Hydraulics Gmbh & Co. Kg Sliding shoe for hydrostatic axial piston machine, has central tube portion that is surrounded by cavity extending from the ball joint to pressure pocket

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH716310A1 (en) * 2019-06-12 2020-12-15 Urben & Kyburz Ag Component of a piston machine and method for manufacturing the component.
WO2020249682A1 (en) * 2019-06-12 2020-12-17 Urben & Kyburz Ag Component of a piston machine and method for producing the component

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