Abstract: A joined prefabricated individual cam includes multiple cams for an adjustable camshaft in particular for an internal combustion engine of a motor vehicle. The camshaft has two shafts mounted concentrically one inside the other, namely an inner shaft and an outer shaft. The joined multiple cam is fixedly pinned to the inner shaft via radial openings provided in the outer shaft with a rotatable bearing on the outer shaft. Such a multiple cam has at least one prefabricated individual cam which is placed as a cam ring on the outside circumference of a carrier pipe at an axial distance from the neighboring individual cams and is fixedly connected to this carrier pipe at a predetermined angle of rotation and axial distance assignment.

Abstract: A joined prefabricated individual cam (1, 2), comprising multiple cams for an adjustable camshaft in particular for an internal combustion engine of a motor vehicle, whereby the camshaft has two shafts mounted concentrically one inside the other, namely an inner shaft and an outer shaft, and the joined multiple cam is fixedly pinned to the inner shaft via radial openings provided in the outer shaft with a rotatable bearing on the outer shaft, should be easy and inexpensive to manufacture. To this end, such a multiple cam is characterized in that at least one prefabricated individual cam (1, 2) is placed as a cam ring on the outside circumference of a carrier pipe (3?) at an axial distance from the neighboring individual cams (1, 2) and is fixedly connected to this carrier pipe (3?) at a predetermined angle of rotation and axial distance assignment.

Abstract: An anti-rotationally secured tappet of a valve drive of an internal combustion engine may include a bucket tappet including an external lateral surface. A floor and a skirt for may be arranged between a cam and a valve of the valve drive and guided in a receiving bore of a cylinder head. The skirt may include an internal lateral surface and the cylinder head may include a guide groove. A radially outward protruding anti-rotation component may be arranged in a recess of the skirt that glides in the guide groove of the cylinder head. Two spring arms may be included with the anti-rotation component and extend in a circumferential direction of the tappet.

Abstract: The present invention relates to a rotationally locked tappet (1) of a valve timing mechanism of an internal combustion engine, which tappet is arranged between a cam and a valve and is guided in a receiving bore of a cylinder head (4). Here, a radially protruding anti-rotation safeguard (6) which slides in a guide groove (5) of the cylinder head (4) is arranged in a recess (7, 7?) of the skirt (3). It is essential to the invention here that the anti-rotation safeguard (6) has two spring arms (8, 8?) which extend in the circumferential direction of the tappet (1), bear at least in regions either against an inner circumferential surface (16) of the skirt (3) or against an outer circumferential surface (10) of the tappet (1) and fix the anti-rotation safeguard (6) on the tappet (1) by clamping force which acts radially on said tappet (1).

Abstract: A method for producing a compression connection for a driving part (1), in particular for an essentially ring-shaped driving part (1) on a shaft (3), in particular in the case of a built-up camshaft with which the driving part (1) has an opening that essentially corresponds to the outside diameter of the shaft (3), the driving part (1) sits on the shaft with coverage in the finished compression connection, an adhesive layer is applied between the circumferential surfaces of the driving part (1) and the shaft (3), is to be improved. To this end, such a method is characterized by the following features: the driving part (1) is heated until reaching the joining temperature and is thereby widened, the driving part (1) is pushed on to the shaft essentially without any forces.

Abstract: A joined prefabricated individual cam (1, 2), comprising multiple cams for an adjustable camshaft in particular for an internal combustion engine of a motor vehicle, whereby the camshaft has two shafts mounted concentrically one inside the other, namely an inner shaft and an outer shaft, and the joined multiple cam is fixedly pinned to the inner shaft via radial openings provided in the outer shaft with a rotatable bearing on the outer shaft, should be easy and inexpensive to manufacture. To this end, such a multiple cam is characterized in that at least one prefabricated individual cam (1, 2) is placed as a cam ring on the outside circumference of a carrier pipe (3?) at an axial distance from the neighboring individual cams (1, 2) and is fixedly connected to this carrier pipe (3?) at a predetermined angle of rotation and axial distance assignment.