Investigation of BTA analogy experiments to determine the influence of different cutting edge designs on the surface integrity.

In BTA (Boring and Trepanning Association) deep hole drilling the resulting surface and subsurface zone of the bore are conditioned by two main components of the tool, the cutting edge and the guide pads. To differentiate the influence of the components, experiments in an analogue model setup were conducted only using the cutting edge. Different cutting edge designs and process parameters were used during the machining experiments to determine the influence on the surface integrity. Using non-destructive measurement techniques, the specimens were analyzed regarding the residual stress state and the surface roughness. The model-experiment-based results are compared to investigations of the surface integrity in original BTA deep hole drilling. [ABSTRACT FROM AUTHOR]