Detect spindle anomalies: Digitalization & Industry 4.0
To reduce scrap and improve productivity, the Artis GEMDS system from Marposs Corp., Auburn Hills, Michigan, detects spindle anomalies in real time. This helps shops prevent damage to machines and avoid out-of-tolerance components. The system uses data from a noncontact eddy current sensor to monitor spindle elongation on machine tools due to temperature changes or other causes of displacement.
To reduce scrap and improve productivity, the Artis GEMDS system from Marposs Corp., Auburn Hills, Michigan, detects spindle anomalies in real time. This helps shops prevent damage to machines and avoid out-of-tolerance components. The system uses data from a noncontact eddy current sensor to monitor spindle elongation on machine tools due to temperature changes or other causes of displacement.
“During machining processes in machine tools, temperature variations occur,” said Product Manager Jorge Pena. “And in most cases, these variations are the cause of spindle growth, which leads to poor workpiece quality and damages.”
The system gives early feedback if set limits are exceeded.
The GEMDS module. Image courtesy of Marposs
“The GEMDS system uses contactless sensors to measure the variation of the distance of a specific target and then either generates alarms to stop the machine or transmits the information to the numerical control to provide a compensation,” Pena said.
The system consists of the eddy current sensor, an amplifier, a connecting cable and a monitoring module. Four different sensor signals can be monitored — one for displacement and three for temperature — sharing real-time feedback on critical variations. GEMDS has a measuring range of 550 µm (0.022″) and precision down to ±0.2 µm (0.000008″).
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