| 摘要 |
A camshaft for automotive engines in particular, comprising at least one first cam ( 5 ') and at least one cam segment ( 6 ) which is rotatable to a limited extent with respect to the first cam ( 5 ') and exercises the full or partial function of a second cam ( 4 ), with which an inner shaft ( 3 ) and an outer shaft ( 2 ) are arranged concentrically one inside the other and also rotatably with respect to one another, the first cam ( 5 ') and the cam element ( 6 ) surround the outer shaft ( 2 ) on the periphery at least in part, the first cam ( 5 ') is fixedly connected to the outer shaft ( 2 ), and the respective cam segment ( 6 ) is connected to the inner shaft ( 3 ) in a rotationally fixed manner, the cam segment ( 6 ) is provided with an inside circumferential surface extending over only a section of the circle running concentrically in a circular cylindrical pattern with respect to the inner shaft ( 3 ) and the outer shaft ( 2 ), the inside circumferential surface of the cam segment ( 6 ) is supported on a guide area ( 2 ') formed by the outer shaft ( 2 ) or fixedly connected to it, is to be assembled from completely machined parts to form a finished camshaft which does not need to be post-machined, such that there is no change in geometry on the completely machined parts. To this end, such a camshaft is characterized by the following features: the cam segment ( 6 ) is mounted on the guidance area ( 2 ') provided for the outer shaft ( 2 ) by means of a tongue-and-groove connection ( 8, 9 ) running on a circular section that is limited at the circumference, whereby the circular section is designed to be coaxial with the outer shaft ( 2 ) and the inner shaft ( 3 ), the cam segment ( 6 ) which is connected to the inner shaft in a rotationally fixed manner is displaceable with respect to the inner shaft ( 3 ) to a limited extend radially. |
