In this study, strain gauge based dynamometer has been designed and developed.
It has been devised and connected with necessary data acquisition system consisting of hardware and software. Dynamometer can measure three perpendicular cutting force components simultaneously during turning and the measured numerical values can be stored in computer by data acquisition system.
This dynamometer was designed to measure up to 3500 N maximum force and the sensitivity of system is ± 5 N.
In order to determine accuracy, the dynamometer was calibrated stat ically and dynamically and subjected to
cross-sensitivity test and eccentricity test.
The values of cross sensitivity of the dynamometer for the three directions were calculated in the range of 0.17%-0.92%.
Dynamometer can be assumed as reliable as this small value can be neglected.
In turning operations, appropriate results were obtained in cutting force measurements.
The obtained results of machining tests performed at different cutting parameters shows that the
dynamometer can be used reliably to measure cutting forces.
Although it was designed primarily for turning, it can be used for milling, drilling etc.