Brueninghaus Hydromatik Gmbh

Rainer St&ouml;lzer

Manfred Lotter

Thomas Kunze

Bernd H&uuml;hn

An axial piston engine ( ), including a housing ( ) in whose inner compartment ( ) a cylinder drum ( ) and a swash plate ( ) located axially adjacent thereto are situated. Several piston bores ( ), which extend approximately parallel to the central axis of the cylinder drum ( ) are located in the same, pistons ( ) being displaceably guided in the piston bores. The ends of the pistons facing towards the swash plate ( ) are supported on the swash plate ( ). A driving shaft ( ) is rotatably mounted in the housing ( ) and is connected to the cylinder drum in a fixed manner secured against rotation therebetween by a multitooth coupling ( ) comprising teeth ( ) and tooth spaces ( ) which alternate regularly in a peripheral direction and which engage with each other. At least one feedthrough channel ( ) which extends essentially parallel to the axis of rotation of the drive shaft ( ) and from one side of the multitooth coupling ( ) to the other is located in the area of the multitooth coupling ( ). Obtained is a flow feedthrough and/or a mechanical feedthrough from one side of the multitooth coupling to the other while ensuring that the multitooth coupling is stable and simple to produce. To this end the feedthrough channel ( ) is located between at least one tooth crown or tip surface (43 ) and a tooth space bottom ( ) located opposite thereto.

Axial piston engine

The invention relates to a method for the production of a ball jointed connection between a guide shoe ( ) and a cylinder piston ( ) of a piston machine. A spherical cap-shaped recess ( ) is first of all formed on the cylinder piston ( ) and/or the guide shoe ( ), whereby the recess ( ) is undercut in such a way that the spherical cap-shaped recess ( ) comprises a solid angle area (&agr;) of over 180&deg;, and the diameter (D) in the region of the equator plane ( ) is greater than the diameter (d) of the recess ( ). Furthermore, a spherical head ( ) is formed on the corresponding counterpart, that is the guide shoe ( ) and/or the cylinder piston ( ). In accordance with a first version of the invention, the spherical head ( ) is pushed into the spherical cap-shaped recess ( ) in such a way that the edge area ( ) surrounding the spherical cap-shaped recess ( ) is elastically deformed when the spherical head ( ) is pushed in, and the surrounding edge area ( ) grips behind the spherical head ( ). Alternatively, the spherical head ( ) has a flattening ( ) which is plastically deformed after introduction of the spherical head ( ) into the recess ( ).

Method for the production of a ball jointed connection

An axial piston machine (,) which includes a cylinder block (,) having cylinder bores (,) in which pistons (,) are movably guided, with the pistons (,) being supported on an inclined or wobble plate (,) in order to perform a lifting movement. The axial piston machine (,) further includes a pivot device (,) for varying the inclination of the inclined or wobble plate (,) by pivoting about a pivot axis (,). Provided is a damping element (,) which includes a damping piston (,) which acts on the inclined or wobble plate (,) and is movably disposed in a damping cylinder (,) which is connected to a pressure fluid reservoir (,) via a throttle element (,) and a non-return valve (,) is disposed parallel thereto. The non-return valve (,) enables pressure fluid to flow in an unthrottled manner from the pressure fluid reservoir (,) into the damping cylinder (,) and prevents the pressure fluid from flowing out of the damping cylinder (,) in an unthrottled manner by bypassing the throttle element (,). In this way, a damped pivoting movement of the inclined or wobble plate (,) is brought about.

Growing community of inventors

Neu-Ulm, Germany

Rainer Stölzer

Growing community of inventors

Neu-Ulm, Germany

Rainer St&ouml;lzer

Rainer Stölzer