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The second EWJCA meeting has been held in November 2011, at Kungliga Tekniska högskolan (Royal Institute of Technology (KTH), Stockholm, Sweden. Around 20 participants attended the meeting chaired by Mr Walter Maurer (Waterjet AG). The next meeting will be held around May 2012. More details will be posted around that date.
Anna Harding, email address: info@swa.se
Walter Maurer maurer@waterjet.ch
Posted by Florence @ 13.02.2012 11:45:03 News | 0 Comments
The first ConforM-Jet workshop has been successfully held in Stockholm, Sweden in November 2011. ConforM-Jet partner Kungliga Tekniska högskolan (Royal Institute of Technology (KTH)) organised and hosted the event.
The workshop welcomed around 20 participants external to the European project. Amongst the participants, representatives from industrial entities such as KIMTECH and Siemens (Sweden), UHDE high Pressure Technologies and KMT (Germany), Aquapro (Austria), PTV spol. s r.o. (Czech Republic), Tecnalia (Spain).
During the event, participant were invited to follow and discuss a range of topics related to the use of waterjet :Energy-based multi-sensing monitoring strategies, Predictive Control system equipped with self learning capability and Modelling and Simulation of Jet plume. In the second part of the workshop, participants were able to meet around case studies demonstrating the increasing interest in this innovative non-conventional machining technology.
Participants were coming from all over Europe and their background was ranging from waterjet equipment suppliers to companies providing waterjet cutting services, research institutions and users of waterjet in art and design.
The next and final workshop will be held in October 2013 in Sweden.
Posted by Florence @ 13.02.2012 11:35:32 News | 0 Comments
  
Posted by Florence @ 25.08.2011 14:12:15 News | 0 Comments
Preliminary testing of the HEFJet_Mill system has been successfully tested on the demonstrator's machines at Zeeko and Finecut. The testing included:
- the application of models developed to predict jet foot print generated by free-moving jets.
- the testing of the monitoring system helped to build a sensorial model.
- the preliminary testing of the CAD/CAM system to generate free-form features.
Results were very encouraging and further developments/improvements are in progress. Some results in form of pictures and videos will be uploaded shortly.
Posted by Saqib @ 25.08.2011 14:05:54 News | 0 Comments
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ConforMJet Stats |
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- EU Programme: EU Seventh Framework
- Theme: No 4, Nanosciences, Nanotechnologies, Materials and New Production Technologies.
- Grant agreement: 229155
- Total amount: 3.757.921 euro
- Start of the project: 01/Nov/2009
- End of project: 31/Nov/2013
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Overview |
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A niche non-conventional machining technology is one that uses High Energy Fluid Jets (HEFJet). HEFJet processing, such as Abrasive Waterjet and Abrasive Polishing Milling that operate at high (300bar<7,000bar) and low (p<100bar) pressures respectively, is a fast emerging technology. Its applications range from machining of difficult-to-cut materials (at high pressures) to ultra precision polishing of optical moulds and lenses (at low pressures)(p<7,000bar) and low (p<100bar) pressures respectively, is a fast emerging technology. Its applications range from machining of difficult-to-cut materials (at high pressures) to ultra precision polishing of optical moulds and lenses (at low pressures).
High Energy Fluid Jet Milling (HEFJet_Mill) is still at “craftsmanship” level.
This is due to the complexity of the HEFJet_Mill process that poses the following main challenges:
- HEFJet_Mill uses a jet plume as a “soft body” tool of which geometrical and abrasive characteristics depend on the process parameters and the jet footprint on the target surfaces.
- HEFJet_Mill results in a highly perturbed, but enclosed, workspace environment where metrological equipment can hardly be used to on-line assess parts’ geometrical accuracies.
- Monitoring solutions (e.g. force, power) used in other machining processes are either inefficient or cannot cope with the harsh working environment.
 To overcome this situation, ConforM_Jet aims to develop and demonstrate a fundamentally novel self-learning control system for HEFJet_Mill to enable the generation of multi-gradient surfaces, i.e. freeforms.
In ConforM-Jet concept, a freeform is a Final Multi-Gradient (FMG) surface obtained via HEFJet_Mill from an Initial Multi-Gradient (IMG) surface (see Figure). FMG and IMG are not necessarily “twin” surfaces; they can have different gradients. This implies that the stock of material to be removed from IMG to obtain FMG surface can vary at each “infinitesimal” moment during the HEFJet_Mill process.
The ConforM_Jet concept will integrate the models of high energy fluid jets with multi-sensorial monitoring solutions to predict and control the outcomes of jet plume – workpiece interaction (i.e. geometry of Abraded Footprint), the key element in controlling the generation of freeforms via HEFJet_Mill. Once the modelling – sensing integration is achieved, this is used to develop a radically novel control strategy for HEFJet_Mill, that supported by adequate machine learning algorithms, will lead to the development of the next-generation HEFJet_Mill production systems capable of freeforms generation in various working scenarios (e.g. advanced materials) and with limited human intervention.
ConformJet is sponsored by the EU for 4 years under the Seventh Framework Programme theme 4: Nanosciences, Nanotechnologies, Materials and New Production Technologies.
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