Sensor integration for a hydraulic clamping system

Failures in workpiece positioning influence the machining conditions and outcome of machine tools directly. Hence, the monitoring by a sensor integrated clamping system to avoid rejects is subject of the presented work. The overall aim is to integrate sensory capabilities in a hydraulic clamping system typically used in series production within a joint research project. This paper gives a general survey of the targeted application and focuses on the sensor integration. It shows the qualification of strain gauges for indirect measurement of oil pressure in the hydraulic clamping element and the potential use of the same strain gauges to measure further monitoring objectives. (C) 2014 The Authors. Published by Elsevier Ltd.