Experimental verification of drill performance will be carried out. The final outcome of this project will be a computer-aided design and testing tool that can be used to determine the optimal tool geometry and machining conditions given the required performance criteria. 4.Computer programs with a user-friendly interface implementing these models, enabling prediction of performance parameters with geometry and machining conditions as input. Progress to Date 1.A drilling simulation software has been developed with a WWW interface. It enables the user to design and evaluate the performance of drills.
Options are also available to specify the workpiece geometry including entry and exit angles.
2.Models have been developed to predict forces at entry into cylindrical surfaces where high radial forces are present. The chip loads during entry into cylindrical or inclined workpieces vary with drill rotation. Also, the loads on the two cutting lips are different. This asymmetry causes radial forces which can deflect the drill and cause inaccuracy. The models characterize the asymmetry and predict the resulting radial forces for entry at arbitrary orientations.