-
公开(公告)号：US09707618B2
公开(公告)日：2017-07-18
申请号：US14650347
申请日：2013-12-06
发明人： Junichi Okubo , Kenji Tamura , Kunihiro Yoshida , Tomihiko Fukuyasu , Nobutaka Tanimoto , Tadashi Matsui
CPC分类号： B21K1/08 , B21J1/04 , B21J5/025 , B21J9/00 , B21J9/027 , B21J13/02 , B21J13/025 , F16C3/08 , F16C2220/46 , Y10T29/17 , Y10T29/49286
摘要： In a forming apparatus, journal dies hold and retain rough journal portions of a preform blank therebetween, and reference crank pin die and movable crank pin dies contact rough crank pin portions thereof. In this state, the journal dies and the movable crank pin dies are moved axially toward the reference crank pin die and the reference crank pin die and the movable crank pin dies are moved perpendicular to an axial direction. With this, rough crank arm portions are axially compressed to reduce their thickness to that of crank arms of a forged crankshaft, and the rough crank pin portions are pressed perpendicular to the axial direction to increase an amount of eccentricity to that of the forged crankshaft crank pins. Consequently, it is possible to form a blank for finish forging having a shape generally in agreement with a shape of the forged crankshaft for a three-cylinder engine.
-
公开(公告)号：US09630239B2
公开(公告)日：2017-04-25
申请号：US14425410
申请日：2013-09-03
发明人： Junichi Okubo , Kenji Tamura , Kunihiro Yoshida , Tomihiko Fukuyasu , Nobutaka Tanimoto , Tadashi Matsui
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. 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 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.
-
3.发明申请公开(公告)号：US20150231689A1
公开(公告)日：2015-08-20
申请号：US14425410
申请日：2013-09-03
发明人： Junichi Okubo , Kenji Tamura , Kunihiro Yoshida , Tomihiko Fukuyasu , Nobutaka Tanimoto , Tadashi Matsui
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. 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 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.
摘要翻译： 在成型装置中，固定式轴颈模具（10U，10B）和可动轴颈模具（11U，11B）各自保持并保持其间的预成型坯坯（4）的粗糙的轴颈部分（J'），并且曲柄销模具（12）接触 在这种状态下，可移动轴颈模具（11U，11B）沿固定轴颈模具（10U，10B）轴向移动，并且曲柄销模具（12）在其中移动 轴向和偏心方向。 粗曲柄臂部分（A'）被轴向压缩以将其厚度减小到锻造曲轴的曲柄臂的厚度，并且粗曲柄销部分（P'）在偏心方向上被按压以增加与曲柄销的偏心率 的锻造曲轴。 因此，可以形成具有与锻造曲轴的形状大致一致的形状的锻造用坯料。
-
-
搜索结果
3 条记录 (耗时 0.015 秒)