METHOD AND ARRANGEMENT FOR PRODUCING A WORKPIECE BY USING ADDITIVE MANUFACTURING TECHNIQUES

摘要

A method and an arrangement for producing a workpiece using additive manufacturing techniques involve in-process measurement in order to determine individual characteristics of one or more workpiece layers. In particular, dimensional and/or geometrical characteristics of a workpiece layer are measured before the next workpiece layer is produced. Advantageously, the measurement results are fed back into the production process in order to increase accuracy and precision of the production process.

主权项

1. A method of producing a workpiece by using additive manufacturing techniques, the method comprising the steps of:
providing a CAD data set representing the workpiece in a plurality of layers, said data set comprising a plurality of predefined layer definitions corresponding to the plurality of layers, providing a build platform, providing a layer tool moveable relative to the build platform and configured for at least one of generating and solidifying a material layer on said platform, providing a measuring head moveable relative to the build platform, producing a defined material layer of the workpiece on the build platform by controlling the layer tool in accordance with a defined layer definition from the plurality of layer definitions, measuring the defined material layer using the measuring head in order to determine individual characteristics of said defined material layer, and producing further material layers of the workpiece on the defined layer by controlling the layer tool in accordance with further layer definitions, wherein said further layer definitions are generated from the plurality of layer definitions as a function of the individual characteristics of said defined material layer.