Open AccessModeling of Position-, Tool- and Workpiece-Dependent Milling Machine Dynamics
Author(s) -
Christian Brecher,
Marcel Fey,
Matthias Daniels
Publication year - 2016
Publication title -
high-speed machining
Language(s) - English
Resource type - Journals
ISSN - 2299-3975
DOI - 10.1515/hsm-2016-0002
Subject(s) - machine tool , substructure , vibration , interpolation (computer graphics) , coupling (piping) , position (finance) , process (computing) , computer science , mechanical engineering , machining , focus (optics) , engineering , motion (physics) , structural engineering , acoustics , artificial intelligence , physics , finance , optics , economics , operating system
Depending on the machine design, milling machines can show a significant variation of their dynamic properties with respect to the axes configurations, in particular at high speed spindle rotations and high feedrates. Moreover, the workpiece and the milling tool are critical parts of the machine tool and can have a major effect on the dynamic properties. Certain combinations of milling tool,workpiece, tool engagement, process parameters and axes configurations can come along with undesired forced or self-excited vibrations. So far, planning of milling processes usually does not account for these unwanted vibrations. The focus of this paper is to present a modeling framework, which accounts for the abovementioned influences via simulation. The dynamic properties of various workpieces and tools as well as the dynamic properties for many different axes configurations are stored in databases. Based on these databases, the dynamics of any given machine tool configuration can be simulated efficiently based on a substructure coupling approach and an interpolation strategy.