Invention Grant
US07712221B2 Method of cold-forming near net shape metal roller blanks for anti-friction bearings 有权
用于抗磨轴承的网状金属辊坯附近的冷成型方法

Method of cold-forming near net shape metal roller blanks for anti-friction bearings
Abstract:
A machine, method and tooling to precision cold-form roller blanks for anti-friction bearings. The machine is a multistage progressive former using floating die cavities to enable simultaneous shaping of the ends of the roller with high accuracy and without flash. The tools and staged forming create an improved roller with an advantageous grain pattern and devoid of structural defects previously attributable to the presence of sheared end face material in the radiused corners of the blank and flash at its mid-section.
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