Mahle International Gmbh

Maschinenbau-service-automatisierungstechnik Chemnitz Gmbh

Zahnradfabrik Friedrichshafen, Ag.

Mahle Gmbh

Roland Schacherer

Antonio Menonna

Falk Schneider

Michael Kreisig

Stefan Morgenstern

Christoph Unrath

Christoph Steinmetz

Christoph Beerens

Lothar Pfizenmaier

Gerold Bieber

Christoph Luven

Peter Wieske

Peter Kroos

Markus Lettmann

Oliver Fritz

Rolf Kirschner

Markus Leutert

Berthold Repgen

Stefan Ertl

Achim Voges

Horst Rogner

Michael Hettler

Gert Baitinger

Rolf MÜLLER

A method for jointing elements, each having a cutout, on a shaft by a device for producing a control shaft, comprises disposing the elements vertically above one another, aligned, and fixed. The method also comprises pushing the shaft in vertically from above though the cutouts of the elements by a traversable guide carriage of the device and displacing by a pneumatic piston of the device the traversable guide carriage and the shaft attached thereto until a maximum first press-in force is reached. The method further comprises displacing by at least two spindles of an electric spindle drive of the device the traversable guide carriage and the shaft when the maximum first press-in force is exceeded.

Device for jointing a plurality of elements on a shaft

A grinding machine for external cylindrical grinding of hollow shafts may include at least one grinding disc, at least one support disc, and at least two centrings for a face-side fixing of a hollow shaft. At least one of the at least two centrings may be configured as a point. A ruler may be arranged to adjust and hold a position of the hollow shaft during a grinding operation. A rotation axis of the at least one grinding disc and of the at least one support disc may be arranged parallel to one another and define a plane. A rotation axis of the hollow shaft to be ground may extend outside of the plane by a distance of a&#x3e;12 mm.

Grinding machine

A device for jointing a plurality of elements, each comprising a cutout for a shaft, in a predetermined angular position on the shaft, may include a traversable guide carriage configured to push the shaft from above through the cutouts of the elements. The device may also include an electrical spindle drive and a pneumatic piston for displacing the traversable guide carriage.

A method for producing a bearing assembly for mounting a control shaft, for example a camshaft, may include: providing a bearing; arranging at least two rings on respective axial front sides of the bearing; pushing the bearing together with the at least two rings onto an assembly mandrel; pre-tensioning the at least two rings against the respective axial front sides of the bearing; at least one of (i) pushing a shrink hose over the bearing and the at least two rings and heating the shrink hose, and (ii) winding a film strip over the bearing and the at least two rings; and withdrawing the assembly mandrel.

Method for producing a bearing assembly

A device for positioning a number of function elements, each having a recess for a shaft, in a predetermined angle position on the shaft, may include a plurality of support balconies arranged one above the other, each being destined for a function element. A movable guide carriage may be configured to enable the shaft to be push the shaft from above through the recesses of the function elements. The support balconies may each include at least one gripper respectively fixing one function element. The at least one gripper may be arranged on an associated gripper carriage and may be adjustable in an x-direction and a y-direction relative to the associated gripper carriage and the support balcony. The associated gripper carriage may be mounted on the support balcony so as to be rotatable about a z-axis.

Device for positioning a number of elements

A device for heating a plurality of functional or receiving elements, such as a cam, balancing mass, gearwheel and/or a bearing, may include a plurality of holding balconies disposed above one another along an axis each associated with a respective receiving element, a plurality of workstations includes a loading station, a heating station and an unloading station, and an induction heating device including a plurality of accommodation elements. The plurality of holding balconies may be individually movable in an axial direction of an axis, and/or having a greater spacing in the axial direction with respect to one another in the loading station and/or the unloading station than in the heating station. The plurality of accommodation elements may be jointly adjustable in the axial direction.

Device for heating a plurality of functional elements

A camshaft may include a tube-like outer shaft and an inner shaft arranged coaxially thereto and at least partially rotatable with respect to the outer shaft. The inner shaft may have an end section with a reduced external diameter. The inner shaft may be sealed with respect to the outer shaft at the end section.

Camshaft

An assembled camshaft and a method for producing an assembled camshaft are disclosed. The assembled camshaft may include a camshaft main body having a longitudinal axis. The camshaft main body may include a first axial section and a second axial section disposed between the first axial section and a third axial section. The second axial section may have an outer profile including a toothing extending in an axial direction. At least one sliding cam may be arranged on the second axial section. A drive wheel may be arranged on a free end of the first axial section, and a receiving element may be arranged on at least one of the first axial section and the third axial section.

Method for producing a built camshaft

An apparatus for assembling a composite arrangement including a plurality of functional elements each having an aperture for a shaft, in a predetermined angular position on the shaft, may include a plurality of retaining devices each intended for accommodating a functional element. The retaining devices may be arranged vertically one above another such that the apertures of the functional elements may lie on a vertical line. The apparatus may also include a vertically movable guide slide for the shaft so that a joining of the shaft with the functional elements may take place in a vertical direction. The apparatus may also include a heating device by which at least two functional elements may be heated simultaneously. The apparatus may further include a gripping device by which at least two functional elements which are to be joined may be removed together from the heating device and introduced into the retaining devices.

Apparatus for assembling a composite arrangement

A device for positioning multiple function elements having a recess for receiving a shaft in a predetermined angle position may include multiple mountings for receiving the function elements. The mountings may be equipped with a molding establishing the predetermined angle position of the respective function element corresponding to the angle position on the shaft. The mountings may be positioned such that the recesses of the function elements lie on a common straight line. The mountings may be arranged vertically on top of one another so that the common straight line runs in vertical direction. A vertically moveable guide carriage for the shaft may be provided for joining the shaft with the function elements in vertical direction.

Device for positioning multiple function elements

A metallic hollow valve may include a tubular shaft having a cavity. The shaft may be coupled to a valve head. The shaft may have an external diameter of 5.0 mm&#x3c;d&#x3c;6.0 mm and an internal diameter of 3.0 mm&#x3c;d&#x3c;4.6 mm. The hollow valve may include a cavity disposed in the valve head. A wall surrounding the cavity in the valve head may include a thickness of 1.0 mm&#x3c;b&#x3c;2.0 mm.

Metallic hollow valve

The aim of the invention is to provide a reliable and inexpensive camshaft wherein the inner shaft and the outer shaft can be adjusted in a low-friction manner. For this purpose, a camshaft with cams that can be rotated in relation to each other, wherein at least one first cam () is rotatably received on the outer shaft (), is permanently connected to the inner shaft () via at least one radial opening in the outer shaft (). Means () for connecting a camshaft rotational drive are provided at the axial ends of the camshaft. The camshaft is also provided with a rotational drive () exerting radial supporting forces onto the camshaft.

Camshaft with cams that can be rotated in relation to each other, especially for motor vehicles

The present invention relates to a method for grinding of cam profiles on a camshaft (), having an inner shaft () and an outer shaft () arranged coaxially one inside the other and mounted to rotate with respect to one another. The camshaft () additionally has first and second cams () that can rotate with respect to one another over a limited circumferential angle about the camshaft axis (), the first cams () of which are fixedly connected to the inner shaft () and the second cams () of which are fixedly connected to the outer shaft (). It is essential to this invention that during and/or after the grinding operation a fluid is forced under pressure into the outer shaft (), thereby preventing penetration of grinding dust into the interspace () between the first cams () and the outer shaft () or flushing out any grinding dust that has already penetrated.

Method for grinding of cam profiles

A guide blade-adjusting device for a turbocharger has an adjusting ring that is guided in a simple manner on the guide blade carrier plate. The adjusting ring comprises noses projecting in the axial direction. At least one the noses radially guides the adjusting ring on the guide blade carrier plate.

Growing community of inventors

Geisingen, Germany

Roland Schacherer