Abstract: The present invention discloses a reamer (20) and a method for reaming, for enlarging a pre-existing hole in a workpiece by rotational and axial cutting. The reamer (20) includes a body (24) extending from a shank (22). The body (24) has a first flute (30) providing a first flute cutting edge (32) at a distal end (34) of the body (24) for imparting a first cutting operation to the workpiece. The body (24) has a helical flute (42) providing a helical flute cutting edge (46) in the body distal end (34), radially spaced apart from the first flute cutting edge (32) for imparting a helical cutting operation to the workpiece. The first flute and helical flute cutting edges (32, 46) concurrently and collectively perform the first and helical cutting operations to a sculpture surface of the workpiece, thereby improving tolerances of the cutting operations, varying loads imparted to the workpiece and the reamer (20), and reducing heat generated therebetween.

Abstract: A method and apparatus is disclosed for cleaning and cooling a machine tool and workpiece in which a housing substantially surrounds the machine tool and closely conforms to the tool. A high pressure coolant spray is directed from the housing against the working surface of the rotating machine tool to clean the tool afterwhich the rotation of the machine tool within the close confinement of the housing sprays the coolant from the housing onto the workpiece where it serves to cool and lubricate the workpiece.

Abstract: A method for forming a high density body from a powder material of metallic and non-metallic compositions and combinations thereof comprising confining a quantity of the powder material in a flexible mold structure, subjecting the powder material in the mold structure to a predetermined pressure along one axis while confining the material against movement in directions normal to the axis so as to form a compact body of the powder material and subsequently heating the compact body to a predetermined temperature so as to further compact the body. A quantity of glass is heated so that it will flow and transmit pressure following which the heated body is immersed in the heated glass and the flowable glass is subjected to a pressure high enough to further compact the body. The resulting densified body is uniformly compressed in the directions of three mutually perpendicular axes extending through the body.

Abstract: A gun drill for forming a hole in a metal workpiece consisting of a generally cylindrical body having a shank portion and a tip portion. The body has a longitudinally extending groove formed in its outer surface which extends the full length of the tip portion, and the terminal end of the tip portion has a single cutting edge which extends radially through the axis of the tip portion adjacent the terminal end of the groove. The tip portion is formed intermediate its ends with a wall section located to one side of the groove and in substantial alignment with the cutting edge in a direction longitudinally of the body. A pair of fluid passages are formed in the body, one terminating at the wall section in an orifice directed toward the cutting edge, and the other terminating in an orifice located in the terminal end of the tip portion in a spaced relation with the cutting edge.