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1. 发明授权

US06151778A Apparatus and method for roll forming gears 失效
标题翻译：滚动成形齿轮的装置和方法
公开(公告)号：US06151778A
公开(公告)日：2000-11-28
申请号：US475725
申请日：1999-12-30
申请人： Richard Mark Woolf , Juan R. L. Trasorras
发明人： Richard Mark Woolf , Juan R. L. Trasorras
IPC分类号： B21H5/02 , B22F5/08 , B23P15/14
CPC分类号： B21H5/022 , B22F5/08 , B23P15/14 , B22F2003/166 , B22F2999/00 , Y10T29/49471
摘要： A wrought or powder metal gear preform is mounted for rotation about a first axis and then driven in meshing engagement with a roll forming die supported for rotation about a second axis transverse to the first axis. The roll forming die includes a helical worm thread that moves radially as well as axially across the face of the preform teeth to displace the material of the preform. In the case of a powder metal preform, displacement of the material acts to densify the teeth, whereas in the case of a wrought preform the gear teeth are burnished. The preform and roll forming die are separately driven to control densification.
摘要翻译：安装锻造或粉末金属齿轮预成型件以围绕第一轴线旋转，然后与支撑成围绕横向于第一轴线的第二轴线旋转的辊成形模具啮合地驱动。辊成形模具包括螺旋蜗杆螺纹，其沿径向和轴向移动穿过预成形齿的表面，以移动预成型件的材料。在粉末金属预成型件的情况下，材料的移位用于致密化牙齿，而在锻造预制件的情况下，齿轮齿被抛光。分别驱动预型件和成型模具以控制致密化。

2. 发明授权

US6151941A Apparatus and method for roll forming gears 失效
公开(公告)号：US6151941A
公开(公告)日：2000-11-28
申请号：US237290
申请日：1999-01-25
申请人： Richard Mark Woolf , Juan R. L. Trasorras
发明人： Richard Mark Woolf , Juan R. L. Trasorras
IPC分类号： B21H5/02 , B22F5/08 , B23P15/14 , B21H5/00
CPC分类号： B21H5/022 , B22F5/08 , B23P15/14 , B22F2003/166 , B22F2999/00 , Y10T29/49471
摘要： A wrought or powder metal gear preform is mounted for rotation about a first axis and then driven in meshing engagement with a roll forming die supported for rotation about a second axis transverse to the first axis. The roll forming die includes a helical worm thread that moves radially as well as axially across the face of the preform teeth to displace the material of the preform. In the case of a powder metal preform, displacement of the material acts to densify the teeth, whereas in the case of a wrought preform the gear teeth are burnished. The preform and roll forming die are separately driven to control densification.

3. 发明授权

US07722803B2 High carbon surface densified sintered steel products and method of production therefor 有权
标题翻译：高碳表面致密烧结钢产品及其生产方法
公开(公告)号：US07722803B2
公开(公告)日：2010-05-25
申请号：US11493991
申请日：2006-07-27
申请人： Salvator Nigarura , Rick Ellingsworth , Eric Riley , Juan R. L. Trasorras
发明人： Salvator Nigarura , Rick Ellingsworth , Eric Riley , Juan R. L. Trasorras
IPC分类号： C22C33/02
CPC分类号： C22C33/0264 , B22F3/16 , B22F2003/166 , B22F2003/248 , B22F2998/00 , B22F2999/00 , B22F2207/17 , B22F3/02 , B22F3/10 , B22F3/164
摘要： A powder mixture alloy is provided for manufacturing surface densified high carbon sintered steel articles containing iron or iron pre-alloyed powder, which has been preliminary mixed with at least 0.4 wt % graphite, lubricant and optionally at least one alloying element from the group of nickel, chromium, copper, manganese and molybdenum. Components are manufactured utilizing the alloy mixture comprising the steps of: a) compacting the metallic powder to obtain a compact; b) pre-sintering the compact at a low temperature to prevent graphite from diffusing into the iron; c) surface densifying of the pre-sintered compact to a predetermined densification depth; d) sintering under neutral gas or carburizing atmosphere; e) heat treating the sintered compact.
摘要翻译：提供了一种粉末混合合金，用于制造含有铁或铁预合金粉末的表面致密化高碳烧结钢制品，其与至少0.4重量％的石墨，润滑剂和任选的至少一种来自镍的合金元素预混合，铬，铜，锰和钼。使用合金混合物制造组分，包括以下步骤：a）压实金属粉末以获得压块; b）在低温下预烧结压块以防止石墨扩散到铁中; c）将预烧结的压块的表面致密化到预定的致密深度; d）在中性气体或渗碳气氛下烧结; e）热处理烧结体。

4. 发明授权

US07534391B2 Powder metal clutch races for one-way clutches and method of manufacture 有权
标题翻译：用于单向离合器的粉末金属离合器种类和制造方法
公开(公告)号：US07534391B2
公开(公告)日：2009-05-19
申请号：US11518650
申请日：2006-09-11
申请人： Juan R. L. Trasorras , Salvator Nigarura
发明人： Juan R. L. Trasorras , Salvator Nigarura
IPC分类号： B22F3/24
CPC分类号： B22F3/164 , B22F5/08 , B22F2998/00 , B22F2998/10 , F16D41/07 , B22F7/004 , B22F3/02 , B22F3/10
摘要： A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.
摘要翻译：制造用于单向离合器机构的离合器级联的方法包括将铁基粉末金属压实和烧结到近净形状以产生约6.8-7.6g / cc的芯密度和接近网的种族面形状。凸轮表面以局部增加表面密度的方式进行冷加工，以形成基本上完全致密化的材料的高度致密的层，并且具有在热处理后准备用于单向离合器的最终表面光洁度应用无需进一步工作。可以以这种方式形成单向离合器机构的内外离合器圈，并且产生表现出优异的强度，韧性，疲劳强度和耐磨性的种族。

5. 发明授权

US07578963B2 Method and apparatus for densifying powder metal gears 有权
标题翻译：用于致密化粉末金属齿轮的方法和装置
公开(公告)号：US07578963B2
公开(公告)日：2009-08-25
申请号：US11241210
申请日：2005-09-30
申请人： Juan R. L. Trasorras , Eric T. Riley
发明人： Juan R. L. Trasorras , Eric T. Riley
IPC分类号： B22F3/24
CPC分类号： B22F3/16 , B22F5/08 , B22F5/085 , B22F2998/00
摘要： The invention provides a method and apparatus for densifying the teeth of a powder metal preform gear. The die includes an aperture for receiving a body of the gear and a plurality of grooves for receiving the teeth of the gear. The grooves have a length and a variable width along the length. The grooves narrow tangentially relative to the aperture. The powder metal preform gear is urged through the die and the teeth are plastically and elastically deformed at a relatively narrow portion of the groove. After passing through the narrow portion of the groove and being compressed, the teeth can at least partially recover. The grooves defined by the die can be helical for forming a helical groove.
摘要翻译：本发明提供了一种用于致密化粉末金属预制件齿轮的齿的方法和装置。模具包括用于接纳齿轮主体的孔和用于接收齿轮齿的多个凹槽。凹槽沿着长度具有长度和可变宽度。槽相对于孔切圆切割。粉末金属预制齿轮通过模具被推动，并且齿在凹槽的相对较窄的部分塑性和弹性变形。在通过槽的狭窄部分并被压缩之后，齿可以至少部分恢复。由模具限定的凹槽可以是螺旋形的，用于形成螺旋槽。

6. 发明授权

US07160351B2 Powder metal clutch races for one-way clutches and method of manufacture 有权
公开(公告)号：US07160351B2
公开(公告)日：2007-01-09
申请号：US10261724
申请日：2002-10-01
申请人： Juan R. L. Trasorras , Salvator Nigarura
发明人： Juan R. L. Trasorras , Salvator Nigarura
IPC分类号： C22C33/02
CPC分类号： B22F3/164 , B22F5/08 , B22F2998/00 , B22F2998/10 , F16D41/07 , B22F7/004 , B22F3/02 , B22F3/10
摘要： A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.

7. 发明授权

US07025929B2 Method and apparatus for densifying powder metal gears 有权
公开(公告)号：US07025929B2
公开(公告)日：2006-04-11
申请号：US10821014
申请日：2004-04-08
申请人： Juan R. L. Trasorras , Eric T. Riley
发明人： Juan R. L. Trasorras , Eric T. Riley
IPC分类号： B22F3/24
CPC分类号： B22F3/16 , B22F5/08 , B22F5/085 , B22F2998/00
摘要： The invention provides a method and apparatus for densifying the teeth of a powder metal preform gear. The die includes an aperture for receiving a body of the gear and a plurality of grooves for receiving the teeth of the gear. The grooves have a length and a variable width along the length. The grooves narrow tangentially relative to the aperture. The powder metal preform gear is urged through the die and the teeth are plastically and elastically deformed at a relatively narrow portion of the groove. After passing through the narrow portion of the groove and being compressed, the teeth can at least partially recover. The grooves defined by the die can be helical for forming a helical groove.

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