Abstract: A method and apparatus for producing a hole in any material by means of controlled fracturing using non-rotary machining includes the steps of fixturing a workpiece to the table of a non-rotary holemaking machine tool (103). The cutting tool is then fixtured to the column of the machine tool (105) and the face of the cutting tool is positioned perpendicular to the centerline of the proposed hole (107). The surface of the workpiece is approached with the cutting tool to a predetermined clearance level (109). Thereafter, the cutting tool is driven with sufficient force to induce instantaneous strain in the material of the workpiece to a depth necessary (111) to create a hole of a desired size and shape using a drive mechanism (113). The cutting tool is then repositioned so that the face of cutting tool is perpendicular to centerline of a subsequent hole to be produced (117).

Abstract: An apparatus (100) and method (200) of contact machining having applications in profiling operations utilizes at least one static cutting tool (101) and turret (102) driven by rotary motion (103) about a support mechanism (109) for providing sufficient force to achieve deformation by controlled fracturing (523). This allows the separation of material from a workpiece (105) without imposing axial symmetry upon either the cutting tool (101) or the workpiece (105). The apparatus and method mitigates and/or eliminates the adverse effects of plastic deformation (504) while machining a wider range of shapes and materials with greater productivity and precision than existing methods of machining.

Abstract: An apparatus (100) and method (200) of contact machining having applications in profiling operations utilizes at least one static cutting tool (101) and turret (102) driven by rotary motion (103) about a support mechanism (109) for providing sufficient force to achieve deformation by controlled fracturing (523). This allows the separation of material from a workpiece (105) without imposing axial symmetry upon either the cutting tool (101) or the workpiece (105). The apparatus and method mitigates and/or eliminates the adverse effects of plastic deformation (504) while machining a wider range of shapes and materials with greater productivity and precision than existing methods of machining.

Abstract: The present invention is a wiper die assembly that combines the performance of a solid-body wiper die with the economy of a inserted wiper die for high-pressure rotary-draw tube-bending. The key features of the present invention are: [1] A wiper insert attached to the wiper holder by a mechanical means that retains the bore of the insert as a smooth, uninterrupted working surface, and [2] radius face support shoe attached to the wiper holder that can be adjusted to support and stabilize the entire wiper assembly against the cavity of the bend die.