Camshaft for automotive engines in particular

Abstract

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.

Dependencies are inferred from the claim text.