公开(公告)号：US5516376A

公开(公告)日：1996-05-14

申请号：US248144

申请日：1994-05-24

申请人： Tetsuo Tsukamoto ,  Kiyoshi Ohkawachi ,  Shinji Fushimi ,  Shunzo Umegaki ,  Takashi Matsumoto

发明人： Tetsuo Tsukamoto ,  Kiyoshi Ohkawachi ,  Shinji Fushimi ,  Shunzo Umegaki ,  Takashi Matsumoto

IPC分类号： B21K1/30 ,  B23P15/14 ,  C21D9/32 ,  B21K1/42

CPC分类号： B21K1/30 ,  B23P15/14 ,  C21D9/32 ,  Y10T29/49474

摘要： A hardened surface layer is formed in the region of inner and outer surfaces of a hollow material having a central through hole, then the hollow material is hot-forged into a hollow gear-like forged body by a forging die having a first die element with a piercing punch entering into the central through hole of the hollow material from one side thereof and having a second die element with a piercing punch entering into the central through hole of the hollow material from another side thereof. The forging die forms teeth of the gear on the outer side of the hollow material while producing an annular flash in the central through hole of the hollow material between the piercing punches. A distance between the piercing punches in a closed condition of the forging die defines a thickness of the annular flash which is 0.3 mm or more and no greater than 1.3 times (130%) of a depth of the hardened surface layer. After that, the annular flash is removed from the forged body, and thermal refining is implemented to the forged body by quenching and tempering.

摘要翻译： 在具有中心通孔的中空材料的内表面和外表面的区域中形成硬化表面层，然后通过具有第一模具元件的锻造模具将中空材料热锻成中空的齿轮状锻造体， 穿孔冲头从其一侧进入中空材料的中心通孔，并且具有第二模具元件，其具有穿刺冲头从另一侧进入中空材料的中心通孔。 锻造模具在中空材料的外侧上形成齿轮的齿，同时在穿孔冲头之间的中空材料的中心通孔中产生环形闪光。 在锻造模具的闭合状态下的穿孔冲头之间的距离限定了环形闪光的厚度，其为硬化表面层的深度的0.3mm以上且不大于1.3倍（130％）。 之后，将环形闪光体从锻造体中取出，通过淬火回火对锻造体进行热精炼。

公开(公告)号：US5718774A

公开(公告)日：1998-02-17

申请号：US684887

申请日：1996-07-25

申请人： Tetuo Tukamoto ,  Kiyosi Okawachi ,  Mitugu Kojima ,  Shinji Fushimi ,  Shunzo Umegaki ,  Takashi Matsumoto

发明人： Tetuo Tukamoto ,  Kiyosi Okawachi ,  Mitugu Kojima ,  Shinji Fushimi ,  Shunzo Umegaki ,  Takashi Matsumoto

IPC分类号： B21J5/02 ,  B21K1/30 ,  C21D1/06 ,  C21D9/32 ,  C23C8/20 ,  B21D31/00 ,  C23C8/30

CPC分类号： B21K1/30 ,  Y10T29/49474 ,  Y10T29/49478

摘要： A method of producing a bevel gear is provided. The method comprises the steps of forging, from a case hardened and heated blank, a rough shaped bevel gear intermediate product having a toothed portion, outer burrs at a larger diameter end thereof and between adjacent teeth of the toothed portion, and a ring-shaped inner burr in a center hole thereof, setting the rough shaped bevel gear intermediate product in a trimming die during the time the rough shaped bevel gear intermediate product remains in an elevated temperature condition due to heat left therein after the step of forging, and trimming the outer burrs, and moving, after the step of trimming, the rough shaped bevel gear intermediate product from the trimming die to a sizing die in the vicinity of the trimming die and warm sizing the toothed portion in succession to the step of trimming.

摘要翻译： 提供了一种制造锥齿轮的方法。 该方法包括以下步骤：从外壳硬化和加热的坯料上锻造具有齿形部分的粗糙形锥齿轮中间产品，其较大直径端处的外部毛刺和齿形部分的相邻齿之间的环形 内毛刺在其中心孔中，在粗齿锥齿轮中间产品由于在锻造步骤后留下的热量保持在升高的温度条件下，将粗糙形锥齿轮中间产品设置在修剪模具中，并且修整 外部毛刺，并且在修剪步骤之后，将来自修剪模具的粗糙形锥齿轮中间产品移动到修剪模具附近的定型模具，并且将齿部分部分依次修整到修整步骤。

公开(公告)号：US06282789B1

公开(公告)日：2001-09-04

申请号：US09366543

申请日：1999-08-04

申请人： Nobuo Kino ,  Shinji Fushimi ,  Toshifumi Hibi

发明人： Nobuo Kino ,  Shinji Fushimi ,  Toshifumi Hibi

IPC分类号： B21K102

CPC分类号： B21J5/12 ,  B21K1/28 ,  B21K1/761 ,  B23P15/00 ,  B24B19/26 ,  F16H15/38 ,  Y10T29/4956

摘要： A method of manufacturing a traction roller for a continuously variable transmission comprises placing a layer on a hollow cylindrical material having the volume substantially equal to the traction roller, performing axial pressure forging of the cylindrical material to obtain a work having the axial length substantially equal to that of the traction roller, performing axial die forging of the work to form side wall and outer peripheral surface of the traction roller, and grinding the work subjected to die forging to obtain a finished product of the traction roller.

摘要翻译： 制造用于无级变速器的牵引辊的方法包括将层放置在具有与牵引辊基本相等的体积的中空圆柱形材料上，对圆柱形材料进行轴向压力锻造以获得轴向长度基本等于 牵引辊的轴向模锻，以形成牵引辊的侧壁和外周表面，并且研磨经过模锻的工件以获得牵引辊的成品。

公开(公告)号：US5976053A

公开(公告)日：1999-11-02

申请号：US727037

申请日：1996-10-08

申请人： Nobuo Kino ,  Shinji Fushimi ,  Toshifumi Hibi

发明人： Nobuo Kino ,  Shinji Fushimi ,  Toshifumi Hibi

IPC分类号： B21J5/12 ,  B21K1/28 ,  B21K1/32 ,  B21K1/76 ,  B23P15/00 ,  B24B19/26 ,  C21D1/06 ,  C21D9/00 ,  C23C8/22 ,  C23C8/32 ,  F16H15/38 ,  F16H55/32

CPC分类号： B21J5/12 ,  B21K1/28 ,  B21K1/761 ,  B23P15/00 ,  B24B19/26 ,  F16H15/38 ,  Y10T29/4956

摘要： A method of manufacturing a traction roller for a continuously variable transmission comprises placing a layer on a hollow cylindrical material having the volume substantially equal to the traction roller, performing axial pressure forging of the cylindrical material to obtain a work having the axial length substantially equal to that of the traction roller, performing axial die forging of the work to form side wall and outer peripheral surface of the traction roller, and grinding the work subjected to die forging to obtain a finished product of the traction roller.

摘要翻译： 制造用于无级变速器的牵引辊的方法包括将层放置在具有与牵引辊基本相等的体积的中空圆柱形材料上，对圆柱形材料进行轴向压力锻造以获得轴向长度基本等于 牵引辊的轴向模锻，以形成牵引辊的侧壁和外周表面，并且研磨经过模锻的工件以获得牵引辊的成品。