A method for mounting a camshaft module may involve a module that includes a module cover in which a camshaft is accommodated. The camshaft may comprise a main shaft and a plurality of displacement elements with cam tracks formed thereon for valve-control purposes. The displacement elements may be arranged at predetermined positions in the module cover. The main shaft may be guided along a shaft axis through accommodating passages of the displacement elements. The method may involve arranging a first displacement element in the module cover, introducing the main shaft into the module cover and guiding the main shaft through the accommodating passage of the first displacement element, arranging a second displacement element in the module cover, rotating the main shaft about the shaft axis by an angular amount, and advancing and guiding the main shaft through the accommodating passage of the second displacement element. Further, the displacement elements are arranged in the model cover with an identical rotary orientation about the shaft axis.

A camshaft may include a support shaft and a component with a passage opening that receives the support shaft. The support shaft may include fastening regions and positioning regions alternating in an axial direction. A diameter of the support shaft in the fastening regions may be greater than a diameter of the support shaft in the positioning regions. Furthermore, the passage opening of the component may include axially spaced fastening sections with positioning sections arranged between pairs of the fastening sections. A diameter of the passage opening in the fastening sections may be smaller than a diameter of the passage opening in the positioning sections. Further, the diameter of the support shaft in the positioning regions may be smaller than the diameter of the passage opening in the fastening sections, and the diameter of the support shaft in the fastening regions may be smaller than the diameter of the passage opening in the positioning sections.

A combined cam shaft assembling method comprises the following steps: A, grinding the outer diameter of a steel pipe (2) to specified precision, and machining an inner hole of a cam sheet (1) and a signal disc to specified precision; B, pre-installing the cam sheet (1) and the signal disc onto the steel pipe (2) according to a specified sequence, distance and angle; C, utilizing a tension part (3) to penetrate through the steel pipe (2), ensuring the steel pipe (2) to be expanded, so as to fix the cam sheet (1) and the signal disc onto the steel pipe (2) and reach a specified torque. The method is carried out through a combined cam shaft assembling device. By adopting the tension part (3) to expand the steel pipe (2), the steel pipe (2) and the cam sheet (1) can be rapidly combined, the cam sheet (1) and the signal disc can be clamped onto the steel pipe (2) in a more reliable manner, and the strength of the entire cam shaft is relatively high.

A method for arranging a camshaft in a camshaft module includes arranging cam elements and a switching element on a carrier tube to so as to form a displacement element having a bearing section, outside or external to a module housing. The carrier tube is then cut in a region of a bearing section to form two parts. One of the parts is arranged into a bearing bridge in a module housing. The other part is then joined to the first part that was inserted into the bearing bridge.

A clamping device for manufacturing an assembled camshaft for valve-controlled internal combustion engines, in which at least one cam disc with a base circle region and cam region is machined on the running surface and has a cam-disc recess, includes shrinking the cam disc onto a corresponding shaft designed with a defined dimensional overlap by cooling the shaft and heating the cam disc. Before being shrunk onto the shaft, the at least one cam disc is clamped by the clamping device such that a tension force acts on the recess wall region, the tension force corresponding to a predetermined extent to the state of stresses and/or deformation state of the recess wall region after the operation of shrinking the cam disc onto the corresponding shaft. The running-surface machining of the at least one cam disc occurs when the cam disc is clamped by the clamping device.

A method for producing a constructed camshaft of an internal combustion engine may be used in connection with a camshaft having a cam, a shaft, and an anti-friction bearing. The method may involve machining the cam, machining the shaft to produce a setting region for arranging the cam, heating the cam and the anti-friction bearing, pushing the cam onto the shaft into a preliminary position and pushing the anti-friction bearing onto the shaft into a bearing position, equalizing a temperature between the shaft, the cam, and the anti-friction bearing by cooling at least the cam, and setting the cam onto an end position by way of pushing the cam onto the setting region.

The present invention relates to a camshaft device, which allows a plurality of components to be assembled to a main shaft, and a method for manufacturing the camshaft device. The camshaft device may include: a main shaft lengthily extending in the lengthwise direction; at least one cam lobe assembled to the main shaft and formed eccentrically from a rotation axis of the main shaft; at least one journal bearing assembled to the main shaft and formed to rotatably support the main shaft; and at least one guide shaft assembled to the main shaft and installed between the cam lobe and another cam lobe so as to align an assembling position of the cam lobe or the journal bearing.

A method for jointing elements, each having a cutout, on a shaft by a device for producing a control shaft, comprises disposing the elements vertically above one another, aligned, and fixed. The method also comprises pushing the shaft in vertically from above though the cutouts of the elements by a traversable guide carriage of the device and displacing by a pneumatic piston of the device the traversable guide carriage and the shaft attached thereto until a maximum first press-in force is reached. The method further comprises displacing by at least two spindles of an electric spindle drive of the device the traversable guide carriage and the shaft when the maximum first press-in force is exceeded.

A device for producing a functional shaft and a functional shaft are provided in which a functional element which is provided with a pocket is inserted into a retaining element, a shaft is inserted into the pocket, and a force applied to the functional element while the shaft is being inserted into the pocket is measured.

A method for positioning a cam element on a shaft segment of a camshaft with an assembly aid element may comprise arranging the shaft segment relative to a first tool such that a first distal shaft segment end of the shaft segment lies flush against a surface of the tool that is directed towards the shaft segment; arranging the cam element on the shaft segment in a pre-position; arranging a first distal end of the assembly aid element to contact the surface of the first tool that is directed towards the shaft segment such that the assembly aid element forms a defined distance to the first tool along a shaft-segment longitudinal axis; and moving a second tool at least in sections along the longitudinal axis until the second tool contacts a second distal end of the assembly aid element, and pushing the cam element by means of the second tool to a final position.