公开(公告)号：US4614219A

公开(公告)日：1986-09-30

申请号：US725063

申请日：1985-04-19

Applicant: John D. Anderson ,  James W. MacGregor

Inventor： John D. Anderson ,  James W. MacGregor

IPC: B22C9/10

CPC classification number: B22C9/10

Abstract: A foundry core is disclosed for molding a cast blank machinable to produce a crosshead piston head member. The core shapes an exterior surface region of the blank section corresponding to the ring belt in the machined product. The core-shaped exterior surface provides a readily accessible reference for accurately positioning the core during subsequent machining operations.

Abstract translation: 公开了用于模制可机加工以生产十字头活塞头构件的铸坯的铸造铁心。 芯部形成与加工产品中的环带相对应的坯料部分的外表面区域。 芯形外表面提供了一个易于访问的参考，用于在随后的加工操作期间精确定位芯。

公开(公告)号：US5072654A

公开(公告)日：1991-12-17

申请号：US467136

申请日：1990-01-18

Applicant: James W. MacGregor

Inventor： James W. MacGregor

IPC: F02F3/00 ,  F16J1/16

CPC classification number: F02F3/0069 ,  F16C17/028 ,  F16J1/16 ,  F05C2201/0448 ,  F16C33/106 ,  Y10T74/2162

Abstract: A novel prefinished piston pin insert bearing is described wherein the tight radial clearances required for acceptable bearing function are maintained in spite of the tolerances required for assembly through a unique inner bearing surface geometry and through a unique methodology of bearing retention against axial and rotational movement. The interior bearing geometry is formed of radii equal to that of the piston pin which are offset vertically into the upper and lower bearings and of radii of nonspecific size which are offset horizontally. The bearings are retained against movement through connections with the piston head, the piston skirt, and between the various bearing pieces. Means are also provided for feeding oil under pressure to the piston pin and bearing interface for lubrication and to the piston assembly for cooling.

Abstract translation: 描述了一种新颖的预制活塞销插入轴承，其中尽管通过独特的内轴承表面几何形状组装所需要的公差以及通过轴承保持力抵抗轴向和旋转运动所需的独特方法，仍保持可接受的轴承功能所需的紧密径向间隙。 内部轴承几何形状由等于活塞销的半径形成，这些半径垂直偏移到上轴承和下轴承以及水平偏移的非特定尺寸的半径。 轴承通过与活塞头，活塞裙部以及各种轴承件之间的连接而保持抵抗运动。 还提供了用于在压力下将油供给到活塞销和用于润滑的轴承接口以及用于冷却的活塞组件的装置。

公开(公告)号：US5112145A

公开(公告)日：1992-05-12

申请号：US713974

申请日：1991-06-11

Applicant: James W. MacGregor

Inventor： James W. MacGregor

IPC: F02F3/00 ,  F16J1/16

CPC classification number: F16C33/1075 ,  F02F3/0069 ,  F16J1/16 ,  F05C2201/0448

Abstract: A prefinished piston pin insert bearing wherein the radial clearances required for acceptable bearing function are maintained in spite of the tolerance required for assembly through a combination of inner bearing surface geometry and related structure for retaining the bearing against axial and rotational movement. The interior bearing geometry is formed of radii equal to that of the piston pin which are offset vertically into the upper and lower bearings to generate a load bearing surface thereon and of radii offset horizontally and of sufficient length to provide assembly clearance for the piston pin and a load bearing surface of approximately 120.degree. to 150.degree.. The bearings are retained against movement through connections with the piston head, the piston skirt, and between the various bearing pieces. Means are also provided for feeding oil under pressure to the piston pin and bearing interface for lubrication and to the piston assembly for cooling.

Abstract translation: 一种预先完成的活塞销插入轴承，其中，尽管通过内部支承表面几何形状和相关结构的组合来组装所需要的公差，仍然维持可接受的支承功能所需的径向间隙，用于保持轴承抵抗轴向和旋转运动。 内部轴承几何形状由等于活塞销的半径形成，其垂直偏移到上部和下部轴承中以在其上产生承载表面并且在水平方向上具有半径偏移并且具有足够长度以提供活塞销的组装间隙， 承载面约120°〜150°。 轴承通过与活塞头，活塞裙部以及各种轴承件之间的连接而保持抵抗运动。 还提供了用于在压力下将油供给到活塞销和用于润滑的轴承接口以及用于冷却的活塞组件的装置。