| 摘要 |
<p>The invention concerns a method and device for milling three-dimensional workpieces, in particular for producing casting moulds and erosion electrodes. According to the method, a geometric description of the workpiece (1), preferably in the form of 3D CAD data, is broken down digitally into 2D or 3D data in a plurality of layers (10 to 20) of the same or different thicknesses and transformed therefrom into NC milling programmes to be executed layer-by-layer. In order to produce the workpiece (1), plate-like blanks (42) with predetermined, optionally variable thicknesses are connected successively in a laminar manner to a base plate (54) or a previously machined blank (42) and machined by upwardly directed milling tools (36, 38, 40) according to the NC milling programme to be executed for the layer (10 to 20) in question, upwards from the downwardly facing free broad side (60) of the blank.</p> |
