Gm Global Technolgoy Operations, Inc.

Comau, Inc.

Gregory J Tomkiewicz

Robert J Moran

Jose M Lopez-Crevillen

Claudio Giorda

Brian F Hacker

Giuseppe Urso

A fixture for holding a workpiece includes clamps configured to engage tie rods secured to the workpiece, locating pins configured to engage a corresponding pin secured to the workpiece, pads, and actuators configured to move clamps for alternately drawing the workpiece into contact with the pads and disengaging the tie rod from the clamp such that the fixture assembly can release the workpiece.

Fixture for supporting a workpiece

A method of forming a cylinder head may include machining an upper surface of a cam tower of the cylinder head to form a generally planar surface. An oil passage may be drilled in the upper surface to provide an oil feed. A bearing bore may be formed in the upper surface of the cam tower. The bearing bore may include a recess having first and second circumferential ends. The oil passage may intersect the first circumferential end.

Cam bearing surface of an engine cylinder head that includes an axially extending oil passage

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Milford, MI, United States of America

Gregory J Tomkiewicz