Compensation of Thermo-mechanically Induced Workpiece and Tool Deformations During Dry Turning

Dry turning is accompanied by considerable process-induced deformations of the workpiece and the tool. Such deformations decrease the accuracy of machining. In this paper, finite element models are used in order to calculate the deformations of the workpiece and the tool regarding the cutting condition used. The correction of the depth of cut according to the calculated deformations allows for the compensation of the workpiece and tool deformations. The compensation is carried out by a computer-aided-design / computer-aided-manufacturing (CAD-CAM) approach. The results reveal a significant increase of the machining accuracy in dry turning when compensating the workpiece and tool deformations.