In a method for end processing a surface of a shaft-like workpiece, the following steps are performed in the following series, and the workpiece rotates about an axis of rotation: a) finishing the surface with a first finishing tool, b) machining the surface with a scoring tool, whereby the scoring tool produces at least one groove running in a circumferential direction, whereby the at least one groove produces 3 to 12 profiled gorges on a reference segment which reference segment has a length that is predetermined by a measuring method for roughness determination and which is extending on the surface parallel to the axis of rotation, each of said profiled gorges having a depth and width, whereby the ratio of the depth and width of each profiled gorge is greater than 2 and a distance between adjacent profiled gorges is substantially the same,
c) machining the surface with the first finishing tool or a second finishing tool.

In a method for end processing a surface of a shaft-like workpiece, the following steps are performed in the following series, and the workpiece rotates about an axis of rotation: a) finishing the surface with a first finishing tool, b) machining the surface with a scoring tool, whereby the scoring tool produces at least one groove running in a circumferential direction, whereby the at least one groove produces 3 to 12 profiled gorges on a reference segment which reference segment has a length that is predetermined by a measuring method for roughness determination and which is extending on the surface parallel to the axis of rotation, each of said profiled gorges having a depth and width, whereby the ratio of the depth and width of each profiled gorge is greater than 2 and a distance between adjacent profiled gorges is substantially the same,
c) machining the surface with the first finishing tool or a second finishing tool.

A belt-finishing device including a frame. A pressing arm is configured to pivotally mount on the frame. A pressing element, which is used to press a finishing belt against a workpiece surface to be treated, is arranged on the pressing arm. The device is provided with a position detection system for detecting a pressing-arm actual position that deviates from a desired position of the pressing arm. A malfunction or defect of the pressing element is detected by means of the pressing arm actual position that deviates from the desired position of the pressing arm.

A belt-finishing device including a frame. A pressing arm is configured to pivotally mount on the frame. A pressing element, which is used to press a finishing belt against a workpiece surface to be treated, is arranged on the pressing arm. The device is provided with a position detection system for detecting a pressing-arm actual position that deviates from a desired position of the pressing arm. A malfunction or defect of the pressing element is detected by means of the pressing arm actual position that deviates from the desired position of the pressing arm.

The invention relates to a pressing device for pressing a finishing belt against a workpiece surface, including a pressure belt and a pressure belt carrier which supports the pressure belt at two mutually spaced-apart support points, wherein the pressure belt is fastened releasably to the pressure belt carrier, wherein, in order to fix in each case one pressure belt end, provision is made of a fixing device that is provided separately from the pressure belt carrier, and wherein the fixing device is fastened or fastenable releasably to the pressure belt carrier in a state in which one pressure belt end is fixed to the fixing device.

A method for producing a ready-for-use camshaft for controlling valves of an internal combustion engine may be directed towards camshafts that include a carrier shaft on which an end component, for example, a drive wheel, a phase adjuster, or a part of a phase adjuster, is arranged and cam elements that are attached in a positionally fixed manner to the carrier shaft. In some examples, the method comprises providing a carrier shaft and an end component, joining the end component to the carrier shaft, grinding at least the carrier shaft to form cam seats so as to establish readiness for use, introducing a surface profile into a first cam seat, providing a cam element with ready-for-use characteristics, seating the cam element on the cam seat with the surface profile, and repeating certain steps for additional cam elements.

A method for producing a ready-for-use camshaft for controlling valves of an internal combustion engine may be directed towards camshafts that include a carrier shaft on which an end component, for example, a drive wheel, a phase adjuster, or a part of a phase adjuster, is arranged and cam elements that are attached in a positionally fixed manner to the carrier shaft. In some examples, the method comprises providing a carrier shaft and an end component, joining the end component to the carrier shaft, grinding at least the carrier shaft to form cam seats so as to establish readiness for use, introducing a surface profile into a first cam seat, providing a cam element with ready-for-use characteristics, seating the cam element on the cam seat with the surface profile, and repeating certain steps for additional cam elements.

A cam grinding method using a cam grinding device includes: an intermediate-cam lift-data generating step of, based on first lift data of a first cam and second lift data of a second cam, generating imaginary intermediate cam lift data of a spline curve that contains profiles of both cams; a first cam grinding step of grinding the first cam; a second cam grinding step of grinding the second cam; and an intermediate-cam grinding step of removing an unground portion generated at a boundary portion between the first cam and the second cam by plunge grinding or spark-out grinding on the basis of the intermediate-cam lift data after the second cam grinding step.

A cam grinding method using a cam grinding device includes: an intermediate-cam lift-data generating step of, based on first lift data of a first cam and second lift data of a second cam, generating imaginary intermediate cam lift data of a spline curve that contains profiles of both cams; a first cam grinding step of grinding the first cam; a second cam grinding step of grinding the second cam; and an intermediate-cam grinding step of removing an unground portion generated at a boundary portion between the first cam and the second cam by plunge grinding or spark-out grinding on the basis of the intermediate-cam lift data after the second cam grinding step.

The invention relates to a pressing device for pressing a finishing belt against a workpiece surface, including a pressure belt and a pressure belt carrier which supports the pressure belt at two mutually spaced-apart support points, wherein the pressure belt is fastened releasably to the pressure belt carrier, wherein, in order to fix in each case one pressure belt end, provision is made of a fixing device that is provided separately from the pressure belt carrier, and wherein the fixing device is fastened or fastenable releasably to the pressure belt carrier in a state in which one pressure belt end is fixed to the fixing device.