Camco Inc.

Leonard M Dybala

Francis D Logan

A drilling machine having a base supporting a pair of ways on which moves a drill tool support having a drill spindle for holding a drill tool. A hydraulic piston and cylinder assembly positioned on each side of the drill spindle for moving the tool support along the ways. A workpiece holding chuck is positioned in the middle of the support ways and the drill spindle and hydraulic piston and cylinder assemblies are positioned in the same plane with the ways for preventing torque being applied to a drill tool and maintaining axial drilling forces on the drill spindle thereby allowing a drill to drill a straight hole in a workpiece held in the holding chuck. A control system is provided for supplying fluid to the piston and cylinder assemblies, but all of the drilling forces are carried by the piston and cylinder assemblies. In addition, means are provided for monitoring the drilling pressure applied to the piston and cylinder assemblies for indicating the drilling pressure and for automatically stopping drilling when a predetermined pressure is reached.

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Houston, TX, United States of America

Leonard M Dybala