Proceedings of the
World Congress on Micro and Nano Manufacturing (WCMNM 2022 )
19–22 September 2022, Lueven, Belgium
doi:10.3850/978-981-18-5180-3_RP38-0073
Edge Radius Impact on The Tool Geometry Estimation Process: Application in Tool Pre-Setting Systems
1Technical University of Denmark, Department of Mechanical Engineering, 2800 Kgs. Lyngby, Denmark
2LEGO System A/S, Aastvej 1, 7190, Billund, Denmark
ABSTRACT
Modern computer numerical control machine tools require accurate tool geometry information for accomplishing precision machining operations. Camera based tool pre-setting systems support efficient machining processes by providing accurate, repeatable tool data for a variety of cutting tools ranging from macro to micro size tools. The tool data is used by the numerical control programs to attain the desired accuracy in the machining processes. Nevertheless, there is a strong need of establishing a traceable measurement strategy for such optical tool presetting systems which require reference artefacts. One of the requirements for the reference artefact is to have sharp cutting edges (like cutting tool edges) to establish the tool geometry; however, achieving sharp edges is challenging due to the limitation of the manufacturing processes. In this work, we have manufactured an artefact using wire electrical discharge machining method, developed a measurement strategy of tool geometry estimation using a coordinate measuring machine, and investigated the limiting factor of the machining process such as corner radii on the measurement procedure of tool geometry assessment. The prospective application of the proposed method is its implementation in the performance verification of camera or laser-based tool pre-setting systems.
Keywords: Edge Radius, Coordinate Metrology, Tool Geometry, Optical Microscope, Tool Pre-Setting System.
1Technical University of Denmark, Department of Mechanical Engineering, 2800 Kgs. Lyngby, Denmark
2LEGO System A/S, Aastvej 1, 7190, Billund, Denmark
ABSTRACT
Modern computer numerical control machine tools require accurate tool geometry information for accomplishing precision machining operations. Camera based tool pre-setting systems support efficient machining processes by providing accurate, repeatable tool data for a variety of cutting tools ranging from macro to micro size tools. The tool data is used by the numerical control programs to attain the desired accuracy in the machining processes. Nevertheless, there is a strong need of establishing a traceable measurement strategy for such optical tool presetting systems which require reference artefacts. One of the requirements for the reference artefact is to have sharp cutting edges (like cutting tool edges) to establish the tool geometry; however, achieving sharp edges is challenging due to the limitation of the manufacturing processes. In this work, we have manufactured an artefact using wire electrical discharge machining method, developed a measurement strategy of tool geometry estimation using a coordinate measuring machine, and investigated the limiting factor of the machining process such as corner radii on the measurement procedure of tool geometry assessment. The prospective application of the proposed method is its implementation in the performance verification of camera or laser-based tool pre-setting systems.
Keywords: Edge Radius, Coordinate Metrology, Tool Geometry, Optical Microscope, Tool Pre-Setting System.
