Special Issue "Machine Tool Dynamics"
A special issue of Journal of Manufacturing and Materials Processing (ISSN 2504-4494).
Deadline for manuscript submissions: 30 November 2020.
Interests: machining processes and machine tools; machine dynamics; cutting tools; precision manufacturing; process monitoring
Interests: machine tool dynamics; chatter; modelling
The dynamics of machine tools play an important role in productivity in machining processes, and the resulting part quality. The stability of the process against chatter strongly depends on the dynamic characteristics of the machine including the peripherals such as the tooling assembly. Various methods are used to measure, model and simulate the dynamics of machine tools. The results of these are essential in evaluating dynamic rigidity and machining process stability as well as weak parts and components of a machine tool. The research related to the theoretical, numerical and experimental modelling of machine tool dynamic properties will be covered in this Special Issue.
Some authors state that machine dynamics are the main source of errors in predicting stability. The variations of the dynamic parameters in high speed spindles due to thermomechanical effects have attracted strong attention in this field. For this reason, current dynamic characterization procedures have been questioned, and new experimental procedures have been proposed. Nowadays, impact hammer testing is the most common method for dynamic parameter identification. Different authors have proposed the use of alternative excitation methods closer to operational conditions by means of special devices. Some authors have also tried to identify the dynamic parameters under cutting conditions using inverse methods, OMA or controlled cutting force variations. They identified deviations compared to traditionally obtained FRFs.
The analysis of damping is especially interesting. The main source of damping is at the interfaces and joints of the system. Several attempts to increase damping have been reported including passive dampers, the creation of highly damped interfaces, and the introduction of special materials, coatings and foams has been proposed. This Special Issue will cover different attempts to increase the damping of machine tools.
- Modelling of machine tool dynamics.
- FEA of machine tools
- Experimental identification of machine tool structural dynamics
- Modal analysis of manufacturing systems
- Operational modal analysis for machining
- Application of receptance coupling in machine tools
- Inverse methods based on cutting or chatter tests
- Spindle dynamics
- Non-conventional methods to measure dynamic parameters.
- New concepts of vibration absorbers and dampers
- Dynamic characterization of machine tool joints
- Active damping and dampers
- Dynamic validation of machine tools
- Theoretical/experimental correlation and model updating of machine tools
Prof. Dr. Erhan Budak
Dr. Jokin Munoa
Manuscript Submission Information
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