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CN106061646B 三汽缸发动机用锻造曲轴的精锻用坯料的成形装置和使用该成形装置的三汽缸发动机用锻造曲轴的制造方法 有权

三汽缸发动机用锻造曲轴的精锻用坯料的成形装置和使用该成形装置的三汽缸发动机用锻造曲轴的制造方法
摘要：
成形装置自利用可动轴颈模(10U、10B)和固定轴颈模(9U、9B)保持粗坯料(4)的粗轴颈部(Ja)且将基准销模(11)和可动销模(12)贴紧于粗销部(Pa)的状态起，使可动轴颈模(10U、10B)和可动销模(12)朝向基准销模(11)沿着轴向移动，并且使基准销模(11)和可动销模(12)沿着与轴向成直角的方向移动。由此，在轴向上挤压带有配重的粗臂部(Aa)而使带有配重的粗臂部(Aa)的厚度减小至锻造曲轴的带有配重的臂部的厚度，并且在与轴向成直角的方向上按压粗销部(Pa)而使粗销部(Pa)的偏心量增加至锻造曲轴的销部的偏心量。
摘要（英）：

In a forming apparatus, movable journal dies (10U, 10B) and stationary journal dies (9U, 9B) retain rough journal portions (Ja) of a preform blank (4) therebetween, and reference crank pin die (11) and movable crank pin dies (12) contact rough crank pin portions (Pa) thereof, and in this state, the movable journal dies (10U, 10B) and the movable crank pin dies (12) are moved axially toward the reference crank pin die (11) and the reference crank pin die (11) and the movable crank pin dies (12) are moved in a direction perpendicular to an axial direction. With this, weighted rough arm portions (Aa) are axially compressed to reduce their thickness to that of weighted arms of a forged crankshaft, and the rough crank pin portions (Pa) are pressed in the direction perpendicular to the axial direction to increase an amount of eccentricity to that of the crank pins of the forged crankshaft.

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