Position sensor for a camshaft, camshaft arrangement, and method

A camshaft arrangement, comprising:

• a camshaft that rotates about an axis of rotation,
• a position encoder arranged rotationally fixed on an outer circumference of the camshaft, the position encoder including:
• an annular base body arranged in a base plane and having a central longitudinal axis extending vertically in relation to the base plane along an axial direction,
• at least one signal tab projecting radially outward integrally formed on an outer circumference of the base body and extending circumferentially about the central longitudinal axis along a circumferential direction about a predetermined circumferential angle and is bent in a radially outer signal section in relation to the axial direction,
• wherein respectively one recess each is provided at a transition to the bent signal section on two sides delimiting the signal tab in the circumferential direction,
• wherein, an axial end face of the bent signal section of the signal tab tapers at least in a tapered section in a longitudinal section along the axial direction, from radially outwards to radially inwards toward the base body, and
• a sensor cooperating with the position encoder for determining a momentary rotational position of the camshaft.

A method for producing a position encoder for a camshaft, comprising the following steps:

• a) provide an annular blank arranged in a base plane that has a central longitudinal axis extending perpendicular to the base plane along an axial direction,
• b) forming the base body from the blank by punching out or cutting out at least one signal tab protecting radially outward from an outer circumference of the base body, wherein the punching out or cutting out takes place such that an outer circumferential side of the at least one signal tab tapers along the axial direction,
• c) bending a radially outer signal section of the at least one signal tab toward the axial direction such that the outer circumferential side of the signal section of the at least one signal tab that tapers inwards radially toward the base body before bending forms an end face of the bent signal tab that tapers radially inwards after bending,
• wherein, one recess each is incorporated at a transition to the signal section on two sides delimiting the at least one signal tab in the circumferential direction, either in the course of measure b) or chronologically prior to performing measure b).