Assembled camshaft

Abstract

In the following, a camshaft arrangement will be described. In accordance with one example of the present invention, the camshaft arrangement has a camshaft housing, a camshaft arranged in the camshaft housing that has at least one first cam, as well as a second cam that is larger than the at least one first cam and that is rigidly connected with the camshaft. In addition, the camshaft arrangement has a drive wheel that is rigidly mechanically connected with the second cam or with the camshaft, as well as a slide bearing that is arranged coaxially between the drive wheel and the second cam. A bearing bush of the slide bearing is arranged in the camshaft housing or in a bearing cover that is mounted on the camshaft housing. The second cam or the drive wheel or a nut screwed on the camshaft has a running surface for the slide bearing.

1 . A camshaft arrangement comprising:
 a camshaft housing;   a camshaft having at least one first cam and arranged in the camshaft housing,   a second cam that is larger than the at least one first cam and which is rigidly connected with the camshaft;   a drive wheel that is rigidly mechanically connected with the second cam or with the camshaft,   a slide bearing that is arranged axially between the drive wheel and the second cam,   wherein a bearing bush of the slide bearing is arranged in the camshaft housing or in a bearing cover mounted on the camshaft housing and   wherein the second cam or the drive wheel or a screw screwed on the camshaft has a running surface for the slide bearing.   
     
     
         2 . The camshaft arrangement of  claim 1 ,
 wherein the camshaft has a first conical seat, onto which the second cam is pressed by means of the screw screwed on the camshaft,   wherein at least a portion of the shell surface of the nut has a running surface for the slide bearing.   
     
     
         3 . The camshaft arrangement of  claim 1 ,
 wherein the camshaft has a second conical seat, onto which the drive wheel is pressed by means of a further screw which is screwed on the camshaft.   
     
     
         4 . The camshaft arrangement of  claim 2 ,
 wherein the camshaft has a second conical seat, onto which the drive wheel is pressed by means of a further screw which is screwed on the camshaft.   
     
     
         5 . The camshaft arrangement of  claim 1 ,
 wherein the camshaft has a first conical seat, onto which the second cam is pressed by means of the screw screwed on the camshaft,   wherein the drive wheel has a ledge whose shell surface comprises the running surface for the slide bearing.   
     
     
         6 . The camshaft arrangement of  claim 5 ,
 wherein the camshaft has a second conical seat, onto which the drive wheel is pressed by means of a further screw screwed on the camshaft.   
     
     
         7 . The camshaft arrangement of  claim 1 ,
 wherein the second cam is an integrated component of the drive wheel and   wherein the second cam has a coaxial opening central to the camshaft whose inner surface forms the running surface for the slide bearing, wherein the opening encloses the bearing bush.   
     
     
         8 . The camshaft arrangement of  claim 7 ,
 wherein the camshaft has a conical seat, onto which the drive wheel is pressed by means of a further screw that is screwed on the camshaft.   
     
     
         9 . The camshaft arrangement of  claim 1 ,
 wherein the second cam has on a first side a shaft segment that is an integrated component of the second cam; a second side of the second cam is frictionally connected with an abutting end of the camshaft, and a shell surface of the shaft segment forms the running surface for the slide bearing.   
     
     
         10 . The camshaft arrangement of  claim 9 ,
 wherein the shaft segment is hollow and has a conical seat, onto which the drive wheel is pressed by means of a screw, wherein the screw is fed through the hollow shaft segment and is screwed into the abutting end of the camshaft, ensuring at the same time that the frictional connection between the camshaft and the second cam is provided.   
     
     
         11 . The camshaft arrangement of  claim 1 ,
 wherein the second cam is an integral component of the camshaft and is, at one end of the camshaft, flush with the abutting end of the cam;   wherein the camshaft has an interior taper, into which a shaft segment of the drive wheel is pressed, and   wherein a shell surface of the shaft segment forms the running surface for the slide bearing.   
     
     
         12 . The camshaft arrangement of  claim 10 ,
 wherein the shaft segment is hollow and a screw is fed through the hollow shaft segment and screwed into the camshaft, thereby pressing the shaft segment of the drive wheel into the interior taper.   
     
     
         13 . A method for the manufacture of a camshaft arrangement comprising the following:
 inserting a second cam into an open camshaft housing;   inserting a camshaft with at least one first cam into the camshaft housing, wherein the camshaft is threaded through a hub of the second cam and fed through an opening in the cam- shaft housing;   screwing a nut onto the camshaft, and thereby fixing the second cam on the camshaft,   mounting a drive wheel onto the camshaft at least partially outside of the camshaft housing;   wherein either the nut or the drive wheel forms a running surface for the slide bearing that is arranged in the opening of the camshaft housing.   
     
     
         14 . A method for the manufacture of a camshaft arrangement comprising the following:
 inserting a camshaft with at least one cam into the camshaft housing, wherein the camshaft is fed through an opening in the camshaft housing;   mounting a drive wheel onto the camshaft at least partially outside of the camshaft housing,   wherein the drive wheel has a second cam and wherein the drive wheel is slid on a sleeve which is arranged on the camshaft housing, so that a running surface on the drive wheel and an external surface of the sleeve form a slide bearing.   
     
     
         15 . A method for the manufacture of a camshaft arrangement comprising:
 inserting a camshaft with at least one first cam into an open camshaft housing;   connecting a second cam with the camshaft, thereby arranging a shaft segment of the second cam coaxially to the camshaft, wherein the shaft segment has a running surface for a slide bearing;   attaching a bearing cover onto the shaft segment, wherein the bearing cover has a bearing bush which, with the running surface of the shaft segment, forms the slide bearing;   mounting a drive wheel onto the camshaft outside of the camshaft housing, thereby at the same time fixing the connection between the second cam and the camshaft.   
     
     
         16 . A method for the manufacture of a camshaft arrangement comprising:
 inserting a camshaft with at least one cam and a second cam arranged on the end of the camshaft into an open camshaft housing;   inserting a shaft segment that is rigidly connected with a drive wheel in a bearing bush arranged in or on the housing, thereby forming a slide bearing,   fixing a drive wheel onto the camshaft, thereby fixing the shaft segment of the drive wheel coaxially to the camshaft of the second cam.