Abstract
Knowledge of cutting forces during machining operations is very important as it affects directly heat generation, tool wear, quality of the machined surface and integrity of the workpiece. In this study a strain gauges-based analog dynamometer was designed and constructed. This dynamometer can be used to measure three force components in a milling operation. The constructed dynamometer can also be used for cutting forces measurement in drilling operation. The dynamometer was tested for cross sensitivity. Cutting forces measurement was carried out to study the effect of cutting speed and feed rate on cutting forces during slot milling AISI 1010 steel with high speed steel (P6M5) side and face milling cutter. The cutting forces measurement was carried out for dry slot milling. The FMS DL48 data logger was used to transfer data from the dynamometer to computer where the data was recorded and analyzed. The dynamometer was calibrated using a spring balance in a quasistatic mode prior to force measurements in slot milling to find the respective relation between the magnitude of forces and voltage.
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