Low tension piston rings and method for manufacturing the same

    公开(公告)号:US09494233B2

    公开(公告)日:2016-11-15

    申请号:US15002753

    申请日:2016-01-21

    摘要: The invention provides a low tension piston ring having a finished outer diameter and negligible tangential tension. The method includes the steps of machining a stock bar to an initial outer diameter slightly greater than the finished outer diameter of the piston ring, finishing the initial outer diameter of the stock bar to a rounded profile having a nominal diameter equal to the finished outer diameter, and machining the stock bar to the preferred cross-section. Dykes-type piston rings can have keystone or semi-keystone shaped cross-sections. The method continues by detaching the piston ring from the stock bar using a parting tool in response to completing all tension inducing operations including the steps recited above. The method continues with the steps of lapping the piston ring to a final longitudinal thickness and cutting the piston ring longitudinally to form a final gap.

    LOW TENSION PISTON RINGS AND METHOD FOR MANUFACTURING THE SAME
    33.
    发明申请
    LOW TENSION PISTON RINGS AND METHOD FOR MANUFACTURING THE SAME 有权
    低张力活塞环及其制造方法

    公开(公告)号:US20140265148A1

    公开(公告)日:2014-09-18

    申请号:US13827255

    申请日:2013-03-14

    IPC分类号: F16J9/02 B23P15/06

    摘要: The invention provides a low tension piston ring having a finished outer diameter and negligible tangential tension. The method includes the steps of machining a stock bar to an initial outer diameter slightly greater than the finished outer diameter of the piston ring, finishing the initial outer diameter of the stock bar to a rounded profile having a nominal diameter equal to the finished outer diameter, and machining the stock bar to the preferred cross-section. Dykes-type piston rings can have keystone or semi-keystone shaped cross-sections. The method continues by detaching the piston ring from the stock bar using a parting tool in response to completing all tension inducing operations including the steps recited above. The method continues with the steps of lapping the piston ring to a final longitudinal thickness and cutting the piston ring longitudinally to form a final gap.

    摘要翻译: 本发明提供了具有最终外径和可忽略切向张力的低拉力活塞环。 该方法包括以下步骤:将坯料坯加工到初始外径略大于活塞环的最终外径,将坯条的初始外径完成为具有等于最终外径的公称直径的圆形轮廓 ,并将坯料加工到优选的横截面。 Dykes型活塞环可以具有梯形或半梯形截面。 响应于完成包括上述步骤的所有张力诱导操作,使用分型工具将活塞环从坯料棒分离出来。 该方法继续以将活塞环研磨至最终纵向厚度并纵向切割活塞环以形成最终间隙的步骤。

    Oil ring assembly
    34.
    发明授权
    Oil ring assembly 失效
    油环总成

    公开(公告)号:US5161805A

    公开(公告)日:1992-11-10

    申请号:US584080

    申请日:1990-09-18

    IPC分类号: B21D7/08 B23P15/06 B24B19/11

    CPC分类号: B21D7/08 B23P15/065 B24B19/11

    摘要: In a method of manufacturing a side rail of a compound steel oil ring assembly in which a linear, strip-like wire material is passed between a plurality of pins and bent into an annular shape, a side of the side rail that will become the inner circumferential side thereof is brought into pressured contact with at least one pin formed to have a corrugated surface, thereby forming corrugations in the side of the side rail that will become the inner circumferential side thereof.

    摘要翻译: 在制造复合钢油环组件的侧轨的方法中,其中线状的带状线材在多个销之间通过并弯曲成环形,侧轨将成为内部的一侧 其周向侧与形成为具有波纹状表面的至少一个销进行加压接触,从而在侧轨的将成为其内周侧的一侧形成波纹。

    Machine for forming piston ring spacer-expanders from strip stock
    35.
    发明授权
    Machine for forming piston ring spacer-expanders from strip stock 失效
    用于形成活塞环的间隔件膨胀机的机器

    公开(公告)号:US3766765A

    公开(公告)日:1973-10-23

    申请号:US3766765D

    申请日:1971-11-05

    申请人: SEALED POWER CORP

    发明人: OVERWAY R

    IPC分类号: B23P15/06 B21B9/00

    CPC分类号: B23P15/065

    摘要: A machine for making spacer-expanders for piston oil rings of the type described in U.S. Pat. No. 3,477,732. The machine comprises a punch press having a plurality of stations through which strip stock is fed progressively in accurately predetermined increments, the strip stock being worked between dies at each station to transform the strip stock into completed rings. The press includes one or more punching stations where the strip stock is pierced and blanked, one or more forming stations where the pierced and notched strip is bent to form the spring legs of the spacer-expander and then curled into a channel-shaped cross-section, a coiling station where the channel-shaped stock is fashioned into a coil, and a cut-off station where each coil is sheared from the strip to form the semi-finished ring. The press also includes a special transfer apparatus for transferring the semi-finished ring to a final work station wherein the end joints are trimmed and formed to final configuration, after which the finished rings are loaded automatically in stacked relation on a cylindrical mandril.

    摘要翻译: 用于制造活塞油环的间隔物膨胀机的机器,其类型在美国专利No. 第3,477,732号。 该机器包括具有多个工位的冲压机,通过该多个工位,条带坯料以精确的预定增量逐渐进给,在每个工位的模具之间加工条状坯料,以将条状坯料转变成完成的环。 压力机包括一个或多个冲压站,其中带材被刺穿和冲裁,一个或多个成形工位,其中穿孔和切口条被弯曲以形成间隔件 - 膨胀机的弹簧腿,然后卷曲成通道形横截面, 截面,其中通道形状的坯料被制成线圈的卷取站,以及每个线圈从条带剪切以形成半成品环的截止站。 压机还包括用于将半成品环转移到最终工作站的特殊传送装置,其中端部接头被修整并形成为最终构造,之后将成品环以堆叠关系自动装载在圆筒形心轴上。

    Machine for forming piston ring spacer-expanders from strip stock
    36.
    发明授权
    Machine for forming piston ring spacer-expanders from strip stock 失效
    用于形成活塞环的间隔件膨胀机的机器

    公开(公告)号:US3701275A

    公开(公告)日:1972-10-31

    申请号:US3701275D

    申请日:1970-05-21

    申请人: SEAL POWER CORP

    摘要: A machine for making spacer-expanders for piston oil rings of the type described in United States Pat. No. 3,477,732. The machine comprises a punch press having a plurality of stations through which strip stock is fed progressively in accurately predetermined increments, the strip stock being worked between dies at each station to transform the strip stock into completed rings. The press includes one or more punching stations where the strip stock is pierced and blanked, one or more forming stations where the pierced and notched strip is bent to form the spring legs of the spacer-expander and then curled into a channel-shaped cross-section, a coiling station where the channel-shaped stock is fashioned into a coil, and a cut-off station where each coil is sheared from the strip to form the semi-finished ring. The press also includes a special transfer apparatus for transferring the semi-finished ring to a final work station wherein the end joints are trimmed and formed to final configuration, after which the finished rings are loaded automatically in stacked relation on a cylindrical mandril.

    摘要翻译: 用于制造用于活塞油环的间隔物膨胀机的机器,其类型在美国专利No. 第3,477,732号。 该机器包括具有多个工位的冲压机,通过该多个工位,条带坯料以精确的预定增量逐渐进给,在每个工位的模具之间加工条状坯料,以将条状坯料转变成完成的环。 压力机包括一个或多个冲压站,其中带材被刺穿和冲裁,一个或多个成形工位,其中穿孔和切口条弯曲以形成间隔件 - 膨胀机的弹簧腿,然后卷曲成通道形横截面, 截面,其中通道形状的坯料被制成线圈的卷取站,以及每个线圈从条带剪切以形成半成品环的截止站。 压机还包括用于将半成品环转移到最终工作站的特殊传送装置,其中端部接头被修整并形成为最终构造,之后将成品环以堆叠关系自动装载在圆筒形心轴上。