A processing method includes: a step of setting a workpiece having a workpiece surface made of a material containing metal, on a precision processing machine; and a forming step of forming multiple grooves having a V-shaped cross-section, at intervals of a constant pitch in a predetermined area on the workpiece surface, using a tool provided in the precision processing machine to thereby form a V-groove pattern made up of the multiple grooves, in the predetermined area. In the forming step, each time one groove is formed, the relative position between the tool and the workpiece is moved in a direction intersecting the longitudinal direction of the groove and the angle of the groove face of the groove is gradually varied so that a uniform color can be visually recognized in every location in the predetermined area when the predetermined area is observed from a predetermined viewpoint.

The step being performed in a state where a wheel body is fixed to be prevented from rotating around a rotation axis while a cutting edge of a cutting tool is in contact with the three-dimensional shape surface of the design surface in the wheel body, the cutting tool being three-dimensionally and continuously moved relatively along the three-dimensional shape surface while being changed in direction with respect to the three-dimensional shape surface to allow a rake face of the cutting tool to face a tool travel direction to perform three-dimensional continuous cutting processing that allows a specular glossy surface to be automatically formed in the three-dimensional shape surface, the specular glossy surface being finished into a processed surface having a high metallic gloss property by exposing the base metal.

The step being performed in a state where a wheel body is fixed to be prevented from rotating around a rotation axis while a cutting edge of a cutting tool is in contact with the three-dimensional shape surface of the design surface in the wheel body, the cutting tool being three-dimensionally and continuously moved relatively along the three-dimensional shape surface while being changed in direction with respect to the three-dimensional shape surface to allow a rake face of the cutting tool to face a tool travel direction to perform three-dimensional continuous cutting processing that allows a specular glossy surface to be automatically formed in the three-dimensional shape surface, the specular glossy surface being finished into a processed surface having a high metallic gloss property by exposing the base metal.

A method for machining a metallic member to provide a finished appearance, the method uses a lathe and a scraping process. A metallic member includes a top portion and a peripheral sidewall, is positioned on the worktable. The worktable is rotated with the metallic member, the lathe tool reciprocates to machine the top portion of the rotary metallic member circumferentially. The lathe tool is moved along a predetermined path relative to the worktable by the moving device to machine curved surfaces of the top portion of the metallic member. The scraping cutter is moved to contact the peripheral sidewall of the metallic member. The scraping cutter is moved along a predetermined path, and the scraping cutter is fed the metallic member to achieve the required shape and finish.

A method for machining a metallic member to provide a finished appearance, the method uses a lathe and a scraping process. A metallic member includes a top portion and a peripheral sidewall, is positioned on the worktable. The worktable is rotated with the metallic member, the lathe tool reciprocates to machine the top portion of the rotary metallic member circumferentially. The lathe tool is moved along a predetermined path relative to the worktable by the moving device to machine curved surfaces of the top portion of the metallic member. The scraping cutter is moved to contact the peripheral sidewall of the metallic member. The scraping cutter is moved along a predetermined path, and the scraping cutter is fed the metallic member to achieve the required shape and finish.

A method of hyper-feed machining the bladed components of turbomachines, and more specifically their bladed components. Hyper-feed machining, by means of the physical process of controlled fracturing, is the fastest, most precise, and nearest net shape method of machining in existence. The practical effects of the invention are: (1) the production of new and useful small-scale gas turbine engines for a wide range of previously impossible or impractical applications, and (2) the production of existing larger-scale gas turbine engines with great improvements in material removal rates by orders of magnitude, greater precision and geometric complexity of the bladed components, faster overall rates of production of these engines, and significantly reduced costs in production. As a consequence, the best preferred embodiment of the invention is the small-scale turboshaft electric engine for automotive vehicles, which makes possible a turbo-electric vehicle that replaces both the electric battery vehicle and the piston-engine vehicle.

A miniaturized turbogenerator (200) to directly provide electrical propulsion (307 308, 309) to small land, air, and maritime vehicles without an intervening electricity storage battery (315). The invention comprises of a process of miniaturization (500) of a turbine engine core (100), in particular its compressors and turbines (400), by means of hyper-feed machining by linear force alone, i.e. without rotation of either the workpiece or the cutting tool (505), and a resulting apparatus of a miniaturized turbogenerator (200) that has sufficient power density to provide high-performance electrical propulsion (310) for commercially feasible automobiles, urban air mobility vehicles, and other small vehicles and vessels with greater performance than battery-electric vehicles (300).

A single-point rifling tool including a rifling head with a lateral opening, a hook ramp stationarily secured at a first end of the lateral opening, and a cutting tool movably secured at a second end of the lateral opening. The cutting tool is movable along an angled surface of the hook ramp between a retracted position and a cutting position so as to perform a rifling operation in only a single direction through a gun barrel so as to perform a rifling operation in only a single direction through a gun barrel.

The invention relates to a method for producing a blisk comprising a plurality of blade profiles and channels extending between the blade profiles using a bell-type countersink having a conical lateral surface, wherein the method comprises the steps providing a disk-shaped blank, and, to form the channels in the blank, plunging the bell-type countersink into the blank on a lateral surface of the blank and thereby moving it in a direction along a generating line of the bell-type countersink, wherein the displacement of the bell-type countersink is a 3-axial movement on a linear path and/or a 5-axial movement on a curved path. The invention also relates to a bell-type countersink.

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