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1. 发明申请

WO2017163161A1 A FINISHER DIE ASSEMBLY AND A FORGING PROCESS TO MAKE A PINION DRIVE, AND A PINION DRIVE 审中-公开
标题翻译：一个FINISHER DIE组件和一个锻造过程来制作一个小齿轮传动装置和一个小齿轮传动装置
公开(公告)号：WO2017163161A1
公开(公告)日：2017-09-28
申请号：PCT/IB2017/051590
申请日：2017-03-20
申请人： BHARAT FORGE LIMITED , KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
发明人： KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
IPC分类号： B21J5/02 , B21J5/00 , B21J5/08 , B21J13/02 , B21J13/03 , B21K1/30
CPC分类号： B21J5/025 , B21J5/08 , B21J13/02 , B21J13/03 , B21K1/305
摘要： Conventionally, pinion drives are manufactured using multistep processes such as casting or forging, followed by various machining processes, and have shortcomings such as significant wastage of material and resources, requirement of precision tooling, cutting of the grain flow lines resulting in the grain flow lines that are neither continuous nor follow the profile of the teeth, resulting in pinion drives of lower strength and life, and cumbersome ejection mechanisms. The invention discloses a method of producing as-forged near net shape pinion drive having as forged gear teeth with continuous grain flow lines conforming to the profile of the teeth, using sequential forging operation, and a finisher die assembly that ensures automatic and easy ejection of forged part. The process of invention involves deployment of a finisher die assembly which is designed to provide a gap between the top surface of the top finisher die and corresponding inside surface of the top finisher die holder of the assembly.
摘要翻译：传统上，小齿轮传动装置使用多步骤工艺例如铸造或锻造，然后进行各种加工工艺来制造，并且具有材料和资源的显着浪费，精密加工的要求，切割谷物的缺点导致晶粒流动线不连续也不遵循牙齿轮廓的流动线，导致强度和寿命较低的小齿轮驱动，以及繁琐的弹射机构。本发明公开了一种锻造近网形小齿轮传动装置的制造方法，所述传动装置具有锻造齿轮齿，所述锻造齿轮齿使用连续锻造操作具有与齿的轮廓相符的连续的晶粒流动线，所述精整器模具组件确保自动且容易地伪造的部分。本发明的方法包括部署精加工模具组件，该精加工模具组件被设计为在顶部整理器模具的顶部表面和组件的顶部整理器模具保持器的相应内表面之间提供间隙。

2. 发明申请

WO2017163189A1 A METHOD OF MANUFACTURING A CROWN WHEEL, AND A CROWN WHEEL 审中-公开
标题翻译：一种制造车轮的方法和一种车轮
公开(公告)号：WO2017163189A1
公开(公告)日：2017-09-28
申请号：PCT/IB2017/051645
申请日：2017-03-22
申请人： BHARAT FORGE LIMITED , KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
发明人： KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
IPC分类号： B21K1/30 , B21H5/04
CPC分类号： B21K1/30 , B21H5/04
摘要： The invention discloses a method of producing a Crown Wheel involving production of a ring by ring rolling process and further production of near net shape tooth profile by sequential stepwise forging. Conventional methods have several disadvantages e.g. excessive machining time, expensive gear cutting equipment, short life of cutting tools, possible strain hardening and residual stresses in the cold-forged parts and subsequent distortion during heat treatment and a high level of rejection of parts, among others. The invention discloses a method of manufacturing near-net shape crown wheel comprising the steps of making an annular ring using hammer forging, punching, piercing and ring rolling followed by blocker and finisher forging for manufacturing of gear teeth on the ring. Blocker forging is followed by trimming and piercing operation for flash removal. Hot forging operation (hammer blocker forging and finisher forging) is followed by cold coining process for improving the precision of the as-forged teeth profile.
摘要翻译：本发明公开了一种生产冠轮的方法，该方法包括通过环轧工艺生产环，并通过顺序逐步锻造进一步生产近净形齿形。常规方法有几个缺点，例如加工时间过长，齿轮切割设备昂贵，切削刀具寿命短，冷锻件中可能的应变硬化和残余应力以及随后的热处理变形和部件的高度拒收等等。本发明公开了一种制造近净形冠轮的方法，包括以下步骤：使用锤锻，冲孔，穿孔和环轧制造环形圈，然后使用阻挡和精整锻造在环上制造齿轮齿。在阻挡器锻造之后进行修剪和穿孔操作以去除闪光。热锻造操作（锤块锻造和精轧机锻造）之后是冷压铸工艺，以提高锻造齿廓的精度。

3. 发明申请

WO2018055484A1 A METHOD OF MANUFACTURING NEAR-NET SHAPE CROWN WHEEL 审中-公开
标题翻译：一种制造近似网形车轮的方法
公开(公告)号：WO2018055484A1
公开(公告)日：2018-03-29
申请号：PCT/IB2017/055544
申请日：2017-09-14
申请人： BHARAT FORGE LIMITED , KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
发明人： KALYANI, Babasaheb Neelkanth , KALYANI, Basavraj Prabhakar , TAKALE, Madan Umakant
IPC分类号： B23F15/00 , B21D22/00 , B21D53/28 , B21H5/00 , B21H5/02 , B21J5/02 , B23P15/14 , B21J1/06 , C21D9/32
CPC分类号： B23P15/14 , B21H5/00 , B21H5/02 , B21J1/06 , B21J5/02 , B21K1/30 , B23F15/00 , B23F17/006 , C21D1/18 , C21D7/13 , C21D8/105 , C21D9/32
摘要： Invention relates to a method of producing a crown wheel with near-net shaped as-forged teeth having continuous grain flow lines and having minimal machining allowance. The method of invention comprises the steps of making ring using hammer forging and ring rolling technique followed by blocker and finisher forging step for manufacturing of gear teeth on the ring and after which a cold coining operation is performed on the finished forging to achieve near net shape of gear teeth. The cold-coining operation allows a reduced machining allowance of up to 0.3mm but with minimal dimensional variation of teeth. These near net shaped teeth's are further finished to final shape by grinding operation. The forging of near net shape gear teeth profile is carried out using any type of press capable of applying required force. Representative Figure: Figure 3
摘要翻译：本发明涉及一种制造具有近净形假锻齿的冠轮的方法，所述假齿具有连续的晶粒流动线并具有最小的机加工余量。本发明的方法包括以下步骤：使用锤锻和环轧技术制造环，随后在环上制造齿轮齿的阻挡和精整锻造步骤，然后在完成的锻造上进行冷压铸操作以实现近净形状的轮齿。冷压操作可减少最多0.3毫米的加工余量，但齿的尺寸变化最小。这些近净形齿通过研磨操作进一步完成最终形状。使用能够施加所需力的任何类型的压力机来执行近净形齿轮齿廓的锻造。代表人物：图3

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