Zf Friedrichshafen Ag

Christian Ruhl

Helmut Boehm

Martin Brehmer

Josef Haupt

Paul Granderath

Hagen Dopfert

A method for producing a cylindrical hollow body () made of aluminum, an aluminum alloy, or a light metal alloy, includes casting a hollow body () such that the hollow body () has an inner and an outer lateral surface () and two axial end faces. The method also includes, during the casting process, making at least one defined notch (') into one or more of the inner lateral surface (), the outer lateral surface (), and the two axial end faces.

Method for producing a cylindrical hollow body made of aluminum or of an aluminum alloy or of a light metal alloy, cylindrical hollow body, and vehicle transmission

A method for producing and processing a cylindrical hollow body () made of aluminum or an aluminum alloy and for arranging cylindrical hollow body () in a motor vehicle transmission includes producing the hollow body () by a casting process () in such a way that the hollow body () has an inner and an outer lateral surface () and has internal toothing () on the inner lateral surface (), and centrally clamping the hollow body () for processing. The hollow body () is arranged in the vehicle transmission exclusively via tooth flanks of the internal toothing () (). The hollow body () is clamped centrally () exclusively on a partial region () of the inner lateral surface (), away from the internal toothing ().

Method for producing and processing a cylindrical hollow body made of aluminum or an aluminum alloy and for arranging it in a motor vehicle transmission, cylindrical hollow body and vehicle transmission

The relates to a method for producing and machining a cylindrical hollow body constructed of aluminium or an aluminium alloy and for arranging said hollow body in a motor vehicle transmission. The hollow body is produced by a casting process such that the hollow body has an inner and an outer lateral surface and has teeth in at least one sub-region of the inner lateral surface. For machining, the hollow body is centrally clamped. The hollow body is arranged in the vehicle transmission by tooth flanks of the internal teeth. In the disclosed method according to the disclosure, the hollow body is centrally clamped at a tip diameter of the internal teeth. The disclosure further relates to a corresponding cylindrical hollow body and to a corresponding vehicle transmission.

Method for producing an aluminum cylindrical hollow body for a vehicle transmission and a cylindrical hollow body

The mechanism for emergency release of a parking lock of an automatic transmission. The mechanism comprises and is connected, in a rotationally fixed manner, with the selector shaft () of the shifting device of the transmission. A lever (), which is positioned facing the transmission housing (), at the side of the shifting device, can be activated by an unlocking tool () that is inserted from the outside through an opening () in the transmission housing () to release the parking lock.

Device for emergency release of an automotive parking interlock

A planetary gear set lubricating unit which supplies oil from inside a component adjacent the planetary gear set, via a radial bore and an oil catcher, axially through a bore of a planetary gear bolt to planetary gear bearings. The oil catcher forms a ring-shaped chamber, which can be filled with lubricant, and is arranged beside the planetary carrier approximately over the reference diameter of the planetary bolt. The oil catcher has outlet pipes extending axially to direct oil in the chamber. The oil catcher has ovular radial protrusions arranged such that a maximum radial dimension is close to the bolts and a minimum radial dimension is arranged between adjacent planetary bolts. The radially inner edge of the axial bore of the planetary bolts is radially located between the minimum and maximum dimensions of the protrusions. The chamber is delimited by a cover plate and a gasket.

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Friedrichshafen, Germany

Christian Ruhl