Abstract: A device and a method for beam shaping and beam movement during laser material processing with a laser beam source (1) for continuously emitting a laser beam (2), a first optical deflection element (3), a second optical deflection element (4), and an optical focusing element (5) arranged between the second optical deflection element (4) and a workpiece surface (7) to be processed. The second optical deflection element (4) is configured to displace a point of incidence of the laser beam (2) on the workpiece surface (7), and the first optical deflection element (3) is configured to alter a position of a focal plane of the laser beam (2) relative to the workpiece surface (7) by means of a translational movement and/or to change an intensity distribution within a beam cross section of the laser beam.

Abstract: A device and a method for beam shaping and beam movement during laser material processing with a laser beam source (1) for continuously emitting a laser beam (2), a first optical deflection element (3), a second optical deflection element (4), and an optical focusing element (5) arranged between the second optical deflection element (4) and a workpiece surface (7) to be processed. The second optical deflection element (4) is configured to displace a point of incidence of the laser beam (2) on the workpiece surface (7), and the first optical deflection element (3) is configured to alter a position of a focal plane of the laser beam (2) relative to the workpiece surface (7) by means of a translational movement and/or to change an intensity distribution within a beam cross section of the laser beam.

Abstract: The invention relates to a method and a device for locally defined machining on surfaces of workpieces. A laser beam (1) emitted by a laser radiation source (2) is aimed onto the reflecting surfaces of a plurality of adjacently arranged micromirrors that may be controlled individually with an electronic control and that are pivotable about at least one axis. Sub-beams (4) reflected by the reflecting surfaces of the micromirrors pivoted in a defined manner are incident and focused on the surface of a workpiece, which surface is arranged in the focal plane (6) of the focusing optics unit (5), at different adjustable positions, so that simultaneously a locally defined change in the workpiece material and/or a locally defined material removal with prespecifiable geometry is attained in a region of the workpiece near its surface.

Abstract: An intravascular stent or a similar filigree structure is produced in one piece from a cylindrical thin-walled tube. The stent has a plurality of bridges with side faces and apertures delimited by them. At least part of a side face extends obliquely with respect to the outer and inner surface of the stent. The tube is held on a machining apparatus in such a way that it can turn about its central longitudinal axis. The apertures are cut with a laser beam directed at the outer surface of the tube. The remaining wall areas form the bridges. The beam axis of the laser beam is directed toward at least part of the length of a kerf, which has been formed in the tube wall to create an aperture, in such a way that said beam axis hits the outer surface of the tube obliquely.

Abstract: The invention concerns a wear-resistant camshaft and a method of producing the same. Objects in which the application of the invention is possible and useful are all cast-iron parts which are subject to wear as a result of lubricated friction. The wear-resistant camshaft consists of cast-iron and it has a surface layer consisting of a ledeburitic remelted layer with a high cementite portion, and, lying thereunder, a martensitic hardening zone, whereby according to the invention. a. the remelted layer consists of finely dispersed ledeburitic cementite with thicknesses of ≦1 &mgr;m and a metallic matrix of a phase mixture of martensite and/or bainite, residual austenite, as well as less than 20% finely laminated pearlite with a distance of ≦0.1 &mgr;m between the lamelias, and b. the hardening layer is formed from a phase mixture of martensite and/or bainite, partially dissolved pearlite, and residual austenite.