Snelle nauwkeurigheidsanalyse van meerassige meet- en bewerkingsmachines (EWO.5423)

In a modern manufacturing environment product quality is mainly determined by the properties of the applied positioning, manufacturing and measuring machines. In general these machines consist of 3 to 6 axes and are necessary for realising the manufacturing processes. The accuracy of these processes depends on the quality of the machine components, i.e. the guiding systems, the measuring systems, the alignment of the axes. Also the response of the machine components on in- or external forces and especially thermal influences is hereby of major importance.

In order to determine the quality of the machines, the effects as mentioned above have to be described coherently. By measuring these effects, quantification becomes possible. From previous research projects at the section Precision Engineering models have already been developed up to a certain level as well as measuring techniques. However, due to the very complex nature of the machines involved, these techniques are very time consuming and labour intensive. Therefore, industrial application is still problematic. Also, the determination of the time dependent effects has not been realised successfully yet.

For these reasons, a new concept for determining the machine positioning deviations is under development at the section Precision Engineering. This concept is based on relatively simple volumetric length measurements, which can be performed easily and automated on any multi-axis machine. In this research, stationary machine conditions will be analysed first, followed by the investigation of instationary (thermodynamical) machine conditions. This new concept is applicable for the production of multi-axis machines as well as a means of performance control and/or calibration of these machines in a manufacturing environment. The machining accuracy is expected to be improved with a factor 3 to 5. For the required measuring time a reduction of a factor 10 is expected, this compared to conventional methods.

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Bij dit project zijn betrokken:

• IBS Precision Engineering BV
• NMI van Swinden Laboratorium BV
• Unisign BV
• Mitutoyo Nederland BV
• Philips Enabling Technologies