A New System for On-machine Measurement

A new system for on-machine measurement of work pieces is described. The system is based on a fine touch sensor that enables the cutting tool itself to act as a contact probe to inspect the work piece. The proposed measurement technology combines the Q-setter with the fine touch sensor. This low cost measurement system is applied to automatic work piece setup and improving work piece dimensional accuracy on a CNC turning center. It is shown that using the proposed measurement system results in work piece setting time decrease and work piece machining accuracy improvement. The development of the on-machine measurement system makes the fine touch sensor extremely attractive for CNC machine retrofitting.