Back to results
US 10,639,763 B2Granted
Method for journal finishing of crankshafts, camshafts, and journals
AssigneeFord Motor Company
InventorMichael A. Kopmanis
Life of this patent
Estimating the term…
Abstract
A method of grinding a surface of a crankshaft is provided. The method includes grinding the surface of the crankshaft by a grinding wheel, and polishing the surface of the crankshaft ground by the grinding wheel by oscillating a polishing wheel in a transverse direction perpendicular to a longitudinal direction of the crankshaft.
Claims18
A method of grinding a surface of a workpiece, the method comprising:
- grinding the surface of the workpiece by a grinding wheel;
- and
- polishing the surface of the workpiece ground by the grinding wheel by oscillating a polishing wheel at a frequency between 2-25 Hz in a transverse direction perpendicular to a longitudinal direction of the crankshaft.
A method of grinding and polishing a surface of a crankshaft, the method comprising:
- grinding the surface of the crankshaft by a grinding wheel;
- and
- polishing the surface of the crankshaft ground by the grinding wheel by oscillating a vitrified or resin-bonded cubic boron nitride (CBN) wheel having a grain size no greater than 46 microns at a frequency between 2-25 Hz in a transverse direction perpendicular to a longitudinal direction of the crankshaft.
A method of grinding and polishing main bearing journals and pin journals of a crankshaft, the method comprising:
- grinding the surface of the crankshaft by a grinding wheel;
- and
- oscillating a polishing wheel at a stroke between 0.05-1.0 mm and a frequency between 2-25 Hz in a transverse direction perpendicular to a longitudinal axis of the crankshaft to polish the surface ground by the grinding wheel.
Dependencies are inferred from the claim text.