Computer numerically controlled (CNC) machining is the leading subtractive manufacturing technology and even though it is in use since decades, it is far from being fully solved and still offers a rich source of challenging problems in geometric computing and motion planning. Flank, aka peripheral, machining is the finishing stage of the machining process where the tool touches tangentially a to-be-machined surface. The cutting tools used in this stage are typically conical or cylindrical, however, the majority of industrial benchmark geometries like blades or impellers are doubly curved which raises a question whether one shall not use curved tools for manufacturing of curved surfaces, instead of at ones.
In this talk, I will discuss our recent advances in approximation of free-form surfaces by motions of curvature varying tools in the context of 5-axis flank CNC machining. In particular, I will discuss path-planning strategies using fixed tools, or custom-shaped ones, and on an example of spiral bevel gears will demonstrate even more efficient variant of flank machining, called double-flank.
Dr. Michael Barton is an Ikerbasque Research Associate and a co-leader of the Mathematical Design and Simulation group at the Basque Center for Applied Mathematics (BCAM). Prior joining BCAM, he was a post-doctoral fellow at JKU Linz (Austria), Technion (Israel), and King Abdullah University of Science and Technology – KAUST (Saudi Arabia). He published over 60 peer-reviewed research articles; h-index 20 (Scopus), 21 (Google Scholar). He received the Ramon & Cajal fellowship in 2016 and the Young Investigator Award from the Solid Modeling Association (SMA) in 2019. He serves as an associate editor in Computer-Aided Design (CAD, Elsevier), Graphical Models (GMOD, Elsevier), and Computer Graphics Forum (CGF, Wiley) and is a member of International Program Committees at several top conferences of geometric modeling and processing. Currently he is the coordinator of a €3M FET-OPEN 2018 project on Analysis, Design, And Manufacturing using Microstructures (ADAM2). Altogether, Dr. Barton received funding from national governments, EU, and industrial partners in the total amount of €1.24M. His research spans numerical analysis, geometric modeling and processing, particularly approximation of free-form (NURBS) objects.