Ewag Ag

Claus Dold

Bruno Frei

Christoph Pluss

Christian Walter

Christoph Pluess

Gregory Eberle

A process to produce a workpiece surface or a groove inner surface on a rod-shaped, especially cylindrical workpiece. From the workpiece, a rotary tool is supposed to be produced. The material removal is done using laser beam pulses, which are directed through a deflection device onto points of incidence within a pulse area with a specified outside contour on the workpiece. Multiple machine axis drives position the workpiece and the deflection device relative to one another so that the pulse area is oriented essentially at right angles to the emission direction of the laser beam pulses and at right angles to the section of the tool surface that has already been produced and that borders the pulse area. While the material is being removed, the at least one machine axis drive moves the pulse area relative to the workpiece along a specified path of motion while maintaining the orientation.

Process to produce a workpiece surface on a rod-shaped workpiece

The invention relates to a method and a laser machining devicefor machining a workpiece. The laser machining devicehas a laserfor generating a laser beam, which is deflected by way of a deflecting devicein accordance with a pattern defined by a control unitand is directed onto a workpiece surfaceof a workpiece, which surface is to be machined. The point of impingementof the deflected laser beamon the workpiece surfaceis guided along at least one spiral path within a circular hatched area. The spiral pathis characterized by spiral path parameters. One spiral path parameter is the line spacing a between neighboring points of intersection P of the spiral pathwith an axis running through the center point M of the spiral path

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Zurich, Switzerland

Claus Dold