High Precision Valve Seat
Like the principle of the turning lathe, FIXED-TURNING® is based on the simultaneous shifting of a single-point cutting tool around two axes (x, z). Unlike the lathe where the piece rotates, FIXED-TURNING® sees the tool rotating beyond its two axes (x, z) while the piece (cylinder head) remains still. The tool, piloted by a numerical system, has the capacity to describe the longest profiles (within the limit of the spindle) together with the most complex ones, including radii, straight lines and diverse concave or convex curves. Like the precision lathe, FIXED-TURNING® tool machines the most complex shapes with the highest precision. FIXED-TURNING® carries out different operations, including curves, straight lines, inclined in all the directions. The NEWEN® numerical control pilots the shifting of the tool so that the cutting section remains identical regardless of the portion of the machined profile. A powerful computer continuously calculates the optimal trajectory of the tool so that the cutting efforts are regular and reduced to a minimum. Every single shaving calculated from a fraction of a second to a fraction of a second is produced in such way that no fluctuation of the cutting efforts can disrupt the balance and the flexibility of the spindle. FIXED-TURNING® performs a perfect operation and ensures the air-tightness of the valve seats. The machining programs are automatically optimized and memorized for the operations to follow one another while the precision repeats itself endlessly.