Evaluation and adaptation of machining processes for the compensation of thermal and mechanical machining influences

• Applicants: Professor Dr.-Ing. Berend Denkena; Professor Dr. Alfred Schmidt, since 1/2022
• Subject Area: Metal-Cutting and Abrasive Manufacturing Engineering
• Term: from 2020 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 429702029

• Final Report Year: 2024

Final Report Abstract

Thermomechanical loads include deformations due to temperature differences as well as mechanical reactions. In the pre-project (DE 447/90), component deformation during dry machining was investigated, specifically chatter vibrations. These arise from process-induced resonances of component vibrations. A method for simulation-based approximation of the parts eigen frequencies was developed. By converting Dexel-based surface models, frequency response functions for any component states can be calculated. A temporally discrete computation was chosen to reduce computational effort. Additionally, partial modelling results were compared with the overall model.

Publications

• Rattern reduzieren durch NC- und FE-Simulation/Reducing chatter vibrations using NC and FE simulation - Vibrations in aerospace industry. wt Werkstattstechnik online, 114(01-02), 21-27.
  Surmann, Tobias; Denkena, Berend; Friebe, Sven; Schmidt, Alfred & Adili, Maimaiti