Automatic grinder ASP-631F (SL5) is designed for sharpening mills and other tools with blades formed along a helical path. This is a 5-axis machine, where 3 axes can work at the same time. It is used for grinding rake and clearance surfaces of screw blades with inclination angle of a helical path within the range from 0 to 90. It is possible to grind spherical and contouring surfaces. The range of diameters of ground items is up to 160 mm.