Method for the production of an assembled camshaft and device for implementing said method
AssigneeErich Neumayer GmbH & Co. KB
InventorManfred Vogel
Life of this patent
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Abstract
A method for producing an assembled shaft, especially an assembled camshaft, whereby parts, especially cams, are placed on a shaft in predetermined axial and peripheral positions and joined by compression pressure in a friction-tight manner. The cams in the thrust direction have a lubrication groove which surrounds the inner bore thereof and which is essentially wedge-shaped with a linear or curved slope, running in the direction of the wall of the bore. When the cam is slid on the shaft into the predetermined axial position, a lubricant is introduced into the groove. This lubricant is pulled continuously groove into the inner bore of the cam during the push-on process to significantly reduce friction between the inner bore and the shaft.
Claims18
Method for the production of an assembled shaft comprising the steps of:
- pushing a part which has an inner bore by means of joining operations onto a shaft into a predetermined axial position and a specified circumferential position with friction contact due to fit connection, said part in a thrust direction having a lubricant groove which surrounds said inner bore and which is designed to be essentially wedge-shaped and exhibits a linear or curved slope, running in the direction of the inner wall of the bore;
- and
- introducing a lubricant into said groove when said part is slid on the shaft into the predetermined axial position, said lubricant being pulled continuously out of the groove into the inner bore of the part while said part is being joined with said shaft to reduce friction between an outer diameter of said shaft and the inner wall of said bore.
Joining device for pushing a Dart which has an inner bore onto a shaft into a predetermined axial position and a specified circumferential position with friction contact due to fit connection, said part in a thrust direction having a groove which surrounds said inner bore and which is essentially wedge-shaped with a linear or curved slope running in the direction of an inner wall of the bore so that, when a lubricant is introduced into the above when the part is slid on the shaft into the predetermined axial position, the lubricant is pulled continuously out of the groove into the inner bore of the part to reduce friction with the shaft, said joining device comprising a holding member with at least a first two rolls, which lie opposite one another and engage on linear side faces of the part and which through application of force can be forced against the side faces in order to orient a vertical line of symmetry of the part held in the holding member with respect to a second vertical line of symmetry between said first two rolls such that the rolls are opposite one another in horizontal alignment and the second vertical line of symmetry is aligned with the vertical line of symmetry of said part.
Dependencies are inferred from the claim text.