Announcement [de]: +++ The ISINA Symposium 2020 will not take place +++
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Chipping production still requires greater accuracy and high productivity. The excellent control over the structural design of the structures of the machines and the well-advanced servo technology of the feed axis already contribute to a high precision. Ever growing production volume requires more significant prime movers and high feed rates. In the case of the main drivers, in principle, they mostly dissipate in heat convection at the knitting point of the chipping process and in case of feed drivers, their diversion over either the heightened frictional powers of the mechanical driver and guiding elements or heightened power losses of the driving feeds themselves produces heightened heat convection as well. Both processes increase thermo-elastic deformations.
Conventional measures to reduce thermo-elastic mistakes such as temperature control of load-bearing structural areas of the machine tools with moving cooling fluids, climate-controlling standards for whole production areas as well as continuous operation thermal stabilising hydraulic circuit also in idle process windows are already successfully practised. These measures and practices, however, increase the use of energy and reduce economic efficiency. The approach within the frame of the SFB/TR 96 follows oriented standards, that non-stationary thermal circumstance of compliance of the machining accuracy with increased productivity is safely secured, without additionally needing energy for the temperature control process. This means that the goals of the SFB/TR 96 are the solution to the conflicts of energy usage, precision and productivity with chipping production.
In phase one, a strong focus was on partial projects of fundamental modelling a parameterisation analysis. The analysis was focused on components and assemblies and was flanked by work, among other things for the validation of the models, at corresponding test benches for measurement methods and measured values. All working elements were isolated in phase one, partial models of components and assemblies, as well as measurement and modelling methods, were successfully developed and initial solutions were applied to real-life machine environments.
In phase two, the following directions in research are to be expanded into:
- Increasing complexity of the to be analysed object
- Consideration of further and complicated marginal constraints
- Taking into account more influencing factors, (i.e. cooling lubricants, moved joints) as well as
- Implementation in real-life processes
The third phase focuses on demonstrating compiled solutions implemented in real life.Open Homepage