发明名称 |
DYKES-TYPE PISTON RINGS AND METHOD FOR MANUFACTURING THE SAME |
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. |
申请公布号 |
EP2969384(A1) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20140711380 |
申请日期 |
2014.03.01 |
申请人 |
FEDERAL-MOGUL CORPORATION |
发明人 |
SALENBIEN, GREGORY;AZEVEDO, MIGUEL;BELFORD, MATTHEW |
分类号 |
B23P15/06;F16J9/02 |
主分类号 |
B23P15/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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