This machine realizes automatic controlling of four axis, such as work piece movement, wheel feeding, wheel dressing and measurement sample changing through transmission of servomotor and ball lead screw controlled by PC. It changes the traditional hydraulic worktable to servo motor transmission, so it approved the productivity and working reliability greatly. And it is especially suitable for camshaft grinding with special requirement. The grinding head wheel bearing adopts dynamic-static bearing, the rotation of wheel with high precision, good rigidity and anti-shaking ability.