Edge Measurement and its Movement Control for Screw Milling Cutter

Edge CAD/CAM of milling cutter needs edge checking to ensure the precision of milling cutter for screw rotor. The edge checking system makes use of CNC technology in the movement control of system to improve the precision of edge checking. The theoretical tool path of detector was calculated and theoretical model of cutter edge was illuminated. The paper discussed the makeup of hardware. The software of edge checking system was programmed in VB. Main program structure was discussed. The dynamic link library (DLL) was founded for I/O channel operation. By using CNC technology, the measurement accuracy is increased, and its resolution is within 0.5 mum