Development of Cutting Force Measurement Instrument for Turning Tool Post Using Arduino UNO

Cutting force is one of the forces occur during turning process. A measurement instrument is necessary to monitor the cutting tools performance during a turning process operation. Nowadays, dynamometers employing piezoelectric sensors embedded into the machining system, but it very expensive. The strain gauge is a cheaper approach to develop the dynamometer. The purpose of this project is to develop a measurement instrument of cutting force for turning tool post using strain gauge. Cutting force signals were captured, amplified, conditioned, converted to digital signals and read by Arduino. The measurement instrument is calibrated via increment load from 5 to 40 kg. Then, the effects of forces with two difference conditions namely dry and flood fluid condition is performed during turning process. The corresponding force readings are obtained and displayed for real time monitoring. From the observation, it is found that there is a linear relation between force and strain gauge voltage. The mathematical modelling between these force and voltage is then developed. The recent study proved that the Arduino Uno can be used in developing cheaper force instrument measurement (dynamometer) for turning process.