| 摘要 |
PURPOSE: A forging blank is provided to save materials by evenly cutting the cross section of an outer rim by forming a chamfering unit on the outer edge of a body. CONSTITUTION: A forging blank(100) comprises a body(110), a ring-shaped protrusion(120) and a chamfering unit(130). The body is formed in a discus shape. A shaft hole(115) passes through the center of the body. The protrusion is protruded to the perimeter of the shaft hole from one side of the body. The chamfering unit is formed by chamfering the outer edge from one side of the body where the protrusion is formed. |
