Aiming at the problem of the regrinding forming disk milling cutter blade surface is complex

it is difficult to machine by using 3-axis CNC machine tools.To calculate the complex profile of forming disk milling cutter

the mathematical model of grinding forming disk milling cutter is established according to the space coordinate transformation.A method to obtain the tool path for grinding free-form surface by using 3-axis CNC machine tools is proposed.By matching the vector of cutter profile to the vector of contact point on grind wheel

then matching the coordinate points in the cutter profile to the contact points on grind wheel

consequently

the tool path is obtained.The error of enveloped profile along the tool path is less than 0.6μm and can meet the requirements of grinding.Grinding and milling results show that the method for grinding free-form profile is valid by using the 3-axis CNC machine.