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    Composite heavy-duty bushing and method of making the same
    91.
    发明授权
    Composite heavy-duty bushing and method of making the same 失效
    复合重型布置及其制造方法

    公开(公告)号：US3770332A

    公开(公告)日：1973-11-06

    申请号：US3770332D

    申请日：1971-06-14

    申请人： FEDERAL MOGUL CORP

    发明人： DUNN W

    IPC分类号： B21K1/04 ,  B22F7/06 ,  F16C17/00 ,  F16C33/04 ,  F16C33/12 ,  F16C33/14 ,  F16C33/64

    CPC分类号： B21K1/04 ,  B22F7/062 ,  F16C33/04 ,  F16C33/12 ,  F16C33/122 ,  F16C33/14 ,  F16C33/64 ,  F16C2204/60 ,  F16C2220/20 ,  F16C2220/46 ,  F16C2223/12 ,  Y10S75/95 ,  Y10T428/12028 ,  Y10T428/12472 ,  Y10T428/12958

    摘要： A composite heavy-duty bushing, such as a bearing bushing or bearing race (FIG. 4) consists of a high load-bearing or working portion consisting of a sleeve composed of sintered powdered high-performance alloy and a supporting or mounting sleeve subjected to less concentrated or intense loads made of an inexpensive base metal, such as sintered powdered iron. These two sleeves are separately briquetted, and then assembled telescopically. This assembly is then sintered while the sleeves are thus united, and finally hot-forged in an axial direction. This forging operation densifies the composite assembly from the sintered briquette density of about 75 percent to a final density of about 98 percent and at the same time upsets the ends of the base metal sleeve into an adjacent end bevel in the high performance alloy sleeve, hereby clinching the two sleeves inseparably to one another. Photomicrographs of longitudinal sections of these composite bushings spanning the joint between the two sleeves (FIG. 6) after subsequent carburizing and hardening heat treatment show a superior interlock therebetween resulting from a migration of the metals into one another across the interface therebetween into an intermediate zone of the intermingled metals which encircles the interphase. Torsion tests performed on such sections show adequate strengths without failure along the junction surfaces which compare favorably with the strength of similar single solid metal bushings. These photomicrographs also show that such a complete bond has been achieved along the central or axial portion of the joint, that the beveling of the ends is not essential in order to form a joint of adequate strength. Such beveling at the ends is therefore optional and is provided as an additional means of retention of the inner sleeve inside the outer sleeve.

    摘要翻译： 复合重型衬套，例如轴承衬套或轴承座圈（图4）由高承载或工作部分构成，该承载或工作部分包括由烧结粉末高性能合金组成的套筒和经受 由廉价的贱金属（例如烧结粉末铁）制成的较不集中或强烈的负载。 这两个袖子分别压块，然后可伸缩地组装。 然后将该组件烧结，同时套筒如此结合，最后在轴向热锻。 该锻造操作将复合组件从约75％的烧结块状密度致密化至约98％的最终密度，并且同时使基体金属套筒的端部在高性能合金套筒中使相邻的端部斜面变得困难。 把这两个袖子彼此分离。 在接下来的渗碳和硬化热处理之后跨越两个套管（图6）之间的接头的这些复合衬套的纵向截面的显微照片显示出由于金属彼此跨越其间的界面而将金属相互迁移到中间区域之间的优异互锁 的杂交金属包围在相间。 在这些部分进行的扭转试验显示出足够的强度，而不会沿着接合面发生故障，这与类似的单实心金属衬套的强度相比有利。 这些显微照片还表明，沿着接头的中心或轴向部分已经实现了这种完整的接合，为了形成具有足够强度的接头，端部的斜面不是必需的。 因此，端部处的这种斜切是可选的，并且作为将内套筒保持在外套筒内部的附加装置提供。

    Manufacture of rings for rolling bearings
    92.
    发明授权
    Manufacture of rings for rolling bearings 失效
    滚动轴承圈的制造

    公开(公告)号：US3769671A

    公开(公告)日：1973-11-06

    申请号：US3769671D

    申请日：1971-11-22

    申请人： TIMKEN CO

    发明人： KNAPP E

    IPC分类号： B21H1/12 ,  B21K1/04 ,  B23P15/00 ,  B23P11/00

    CPC分类号： B21H1/12 ,  B21K1/04 ,  B23P15/003 ,  Y10S29/026 ,  Y10S29/032 ,  Y10T29/49689

    摘要： A method of manufacturing rings for rolling bearings, particularly tapered roller bearings, in which a ring of rectangular section made by a hot rolling operation is subjected to cold forming by impact whereby to produce a ring form of nonrectangular section having substantially the shape of the required bearing rings. The ring form so produced is machined on one circumferential face to form the race and on one end, preferably the narrower end, to control the axial length, and may then be hardened.

    摘要翻译： 一种制造用于滚动轴承的环的方法，特别是圆锥滚子轴承，其中通过热轧操作制成的矩形截面的环经受冲击的冷成形，从而产生具有基本形状的 所需轴承圈。 这样制造的环形件在一个圆周面上被加工以形成座圈，并且在一端，优选较窄的端部，以控制轴向长度，然后可以被硬化。

    Method and apparatus for manufacturing bearing rings
    93.
    发明授权
    Method and apparatus for manufacturing bearing rings 失效
    制造轴承环的方法和装置

    公开(公告)号：US3685339A

    公开(公告)日：1972-08-22

    申请号：US3685339D

    申请日：1969-06-25

    申请人： UZINA RULMENTUL

    发明人： GOGUTA TRAIAN

    IPC分类号： F16C33/64 ,  B21D53/10 ,  B21J9/06 ,  B21K1/04 ,  B23D21/14 ,  B21D22/06

    CPC分类号： B21K1/04 ,  B21D53/10 ,  B23D21/14 ,  Y10T29/49689

    摘要： Method and apparatus for forming ball bearing races from lengths of tubing. A mandrel is inserted into the interior of the tube. A die having a shape conforming to that of a ball bearing raceway is positioned about the exterior of the tube at approximately its midpoint. The opposite axial ends of the tube are then compressed by jaws to form shoulders on each axial end of the tube to form the raceway.

    摘要翻译： 用于从管道长度形成球轴承座的方法和装置。 心轴插入管的内部。 具有与滚珠轴承滚道的形状一致的形状的模具大致围绕管的外部定位。 然后，管的相对的轴向端部被钳口压缩以在管的每个轴向端部上形成肩部以形成滚道。

    Composite heavy-duty mechanism element and method of making the same
    94.
    发明授权
    Composite heavy-duty mechanism element and method of making the same 失效

    公开(公告)号：US3665585A

    公开(公告)日：1972-05-30

    申请号：US3665585D

    申请日：1970-12-04

    申请人： FEDERAL MOGUL CORP

    发明人： DUNN WILLIAM M ,  SARNES MYRON C

    IPC分类号： B21K1/04 ,  B22F5/08 ,  B22F5/10 ,  B22F7/06 ,  F16C33/62 ,  F16H55/06 ,  B22F3/12

    CPC分类号： F16H55/06 ,  B21K1/04 ,  B22F5/08 ,  B22F5/10 ,  B22F7/06 ,  F16C33/62

    摘要： A composite mechanism element, such as a bevel pinion (FIGS. 1 to 6 inclusive), or the inner race of a tapered roller bearing (FIGS. 7 to 10 inclusive and 16) has its working or load-bearing portion or portions composed of sintered powdered highperformance alloy while its supporting portion not subjected to concentrated or heavy loads, is made of a base metal, such as sintered powdered iron. The toothed outer load-bearing portion of the composite bevel pinion (FIG. 6) and the hollow frusto-conical inner supporting portion (FIGS. 10 to 15) are separately briquetted from high performance alloy powder and low performance metal powder respectively and separately sintered after which the low performance inner supporting portion is pressed into the high performance toothed outer portion so as to be inseparably secured thereto. In the inner race (FIG. 15) of the composite tapered roller bearing (FIG. 16) the low-performance and high-performance portions of the inner race are separately compacted in dies in a briquetting press to form briquettes which are separately sintered and thereafter are pressed together in an assembling operation which causes the high performance and low performance portions of each race to be inseparably secured to one another. The composite outer race is formed by arranging base metal powder and high performance alloy powder in abutting zones in an annular cavity of a briquetting press die and compressing them to form a composite briquette which is then sintered and afterward deformed in a forging die into its final annular shape. The resulting composite sintered powdered mechanism elements are of much lower material cost than corresponding mechanism elements formed of high performance alloy throughout yet perform satisfactorily and have sufficient strength and durability for most purposes. The tapered roller bearing races (FIG. 9) or the bevel pinion (FIG. 15) may be used as they are if of satisfactory density for their intended uses, or they may be further densified by being subjected to an additional hot forging operation with the article sintered thereafter if deemed necessary.

    Method of making a composite tapered roller bearing race
    95.
    发明授权
    Method of making a composite tapered roller bearing race 失效
    制造复合滚子滚子轴承的方法

    公开(公告)号：US3597819A

    公开(公告)日：1971-08-10

    申请号：US3597819D

    申请日：1969-10-27

    申请人： HUDSON B SCHEIFELE

    发明人： SCHEIFELE HUDSON B

    IPC分类号： B21D53/10 ,  B21K1/04 ,  F16C33/64 ,  B23P11/00 ,  B21H1/12

    CPC分类号： B21K1/04 ,  B21D53/10 ,  F16C33/60 ,  F16C33/64 ,  Y10T29/49689

    摘要： Suitable bearing race material is formed into bar stock having a longitudinally-oriented grain structure and having a cross section corresponding to the cross section of the prospective bearing race. From the thus-shaped bar stock are cut a plurality of pieces whose combined lengths substantially equal the circumferential length of the prospective bearing race. These pieces are then bent into circularly arcuate segments having curvatures corresponding to that of the prospective bearing race and having ends configured to fit one another. These segments are then aligned end-to-end in an annular path and welded together into an annular body which is then hardened and ground. This bar stock is provided with an inclined side surface which, for an outer race, becomes the inner surface of the segment, and for an inner race becomes the outer surface of the segment, in each instance constituting the roller path.