Patent ID: 9550325
Date: 2017-01-24
CPC Classifications: B22F,B29C,B29K,Y02P

Claim:
1. A method for the production of a work piece by the successive compacting, by means of electromagnetic radiation or particle radiation, of powdered starting material that has been applied horizontally in layers, so that each layer consisting of at least one trace comprises two substantially vertical lateral faces and one substantially horizontal upper face which, in turn, forms the basis for a possible subsequent layer, wherein at least one of the two vertical side walls is subject to mechanical finishing subsequent to the compacting of said powdered starting material that has been applied horizontally in layers, and wherein the work piece to be formed is surrounded by said powdered starting material during its production and during the mechanical finishing, wherein the mechanical finishing of a vertical side wall of a subject (n th ) layer is performed after the generation of at least one subsequent (n+x th ) layer only and wherein mechanical finishing of the at least one subsequent (n+x th ) layer is not performed at the same time as mechanical finishing of the subject (n th ) layer, and wherein mechanical finishing of the subject (n th ) layer is started only after a sufficient enough number of subsequent (n+x th ) layers are created such that a distance between the subject (n th ) layer and a most recently formed one of the at least one subsequent (n+x th ) layer is sufficiently great that there exists substantially no thermal impact having a distorting effect on the subject (n th ) layer.