PISTON AND METHOD OF MAKING A PISTON,申请号US201615360060-传众专利搜索

PISTON AND METHOD OF MAKING A PISTON

申请公布号：US2017072518(A1)

申请号：US201615360060

申请日期：2016.11.23

申请公布日期：2017.03.16

申请人：

FEDERAL-MOGUL CORPORATION

发明人：MARTINS AIRTON;RIBEIRO CARMO

分类号：B23P15/10;F02F3/00;F02F3/22;F02F3/26

主分类号：B23P15/10

地址：Southfield MI US

摘要：A one-piece piston including a combustion bowl which is cast to its final form and includes at least one irregularity spaced from a central axis. The piston is initially fabricated of an upper crown member and a lower crown member, which are joined together. The piston is then chucked into a machine tool, such as a CNC lathe, which locates either the piston's top surface or a portion of the combustion bowl and establishes its location as a datum plane. It is this datum plane which serves as a reference location for subsequent machining operations of the piston.

主权项：1. A method of making a piston comprising the steps of: preparing a single piece upper crown member of steel having a top surface and a combustion bowl recessed in said top surface, wherein the combustion bowl has a final finish form that is produced by other than machining; preparing a lower crown member as a discrete component separate from the upper crown member; joining the upper and lower crown members together; and machining at least a portion of said jointed upper and lower crown members other than said combustion bowl.