首页>
外国专利>
FORMATION DEVICE FOR MATERIAL FOR FINISH FORGING OF FORGED CRANKSHAFT
FORMATION DEVICE FOR MATERIAL FOR FINISH FORGING OF FORGED CRANKSHAFT
展开▼
机译：锻造曲轴的精锻材料成形装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
In a forming apparatus, stationary journal dies (10U, 10B) and movable journal dies (11U, 11B) each hold and retain rough journal portions (J') of a preform blank (4) therebetween, and crank pin dies (12) contacts rough crank pin portions (P') thereof, and in this state, the movable journal dies (11U, 11B) are moved axially toward the stationary journal dies (10U, 10B) and the crank pin dies (12) are moved in the same axial direction and in an eccentric direction. With this, rough crank arm portions (A') are axially compressed to reduce their thickness to that of crank arms of a forged crankshaft, and the rough crank pin portions (P') are pressed in the eccentric direction to increase the amount of eccentricity to that of the crank pins of the forged crankshaft. Consequently, it is possible to form a blank for finish forging having a shape generally in agreement with the shape of the forged crankshaft.
展开▼
