Work

Improving dynamic process stability in finishing of thin-walled workpieces by optimal selection of stock shape

Year: 2024

Type: article

Abstract: In 5-axis milling of thin-wall parts, flexibility of the in-process-workpiece (IPW) governs static and dynamic deflections, especially at the semi-finishing and finishing stages. Thus, the near net shape preform, i.e. the stock shape left for semi/finishing is crucial for chatter stability. In this study, a methodology is presented to design the stock shape for improved stability. Coupled process simulation, which includes material removal, finite element analysis (FEA) and process stability simulations, is used to show the effect of stock shape on chatter stability. Spindle speed is optimized along the toolpath based on the varying process dynamic behavior for selected cutter locations (CL). The proposed method is experimentally demonstrated on case studies.

Source: Procedia CIRP

DOI: 10.1016/j.procir.2024.08.378

Authors: Pascal Kienast, L. Taner Tunç, Recep Koca, Ozan Ölgü, Philipp Ganser, Thomas Bergs

Institutions: Fraunhofer Institute for Production Technology IPT, Sabancı Üniversitesi, Turkish Aerospace Industries (Turkey), RWTH Aachen University

Language: English

Topic: Advanced machining processes and optimization

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Centro para el Desarrollo Tecnológico Industrial, Bundesministerium für Bildung und Forschung, Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie

Award: G4204258584