Abstract: The invention relates to a device for use in production of bevel gears. The device comprises a turning machine (22), with a working spindle (22.1) and a counter-holder (23), arranged co-axially to a rotational axis (B1) of the working spindle (22.1) for the coaxial tensioning of a workpiece blank (K1). A multi-functional tool holder (24) is provided, which may be displaced relative to the workpiece blank (K1) held in the turning machine (22) and comprises a tool base (25) mounted to rotate about an axis (B2). The tool base (25) is provided for fixing one or more tools. A tool housing (26) with milling head (27) is provided, the tool housing (26) being displaceable relative to the workpiece blank (K1) held in the turning machine (22) and the milling head (27) is mounted to rotate about a milling head axis (B3).

Abstract: Pneumatic particulate material fill systems and methods are disclosed. A particulate material fill system includes a cyclone separator having an inlet adapted to receive pneumatically conveyed particulate material. The cyclone separator has a first outlet adapted to vent air and a second outlet adapted to discharge solids. The particulate material fill system includes a tank adapted to receive solids discharged from the cyclone separator via the second outlet. The tank is adapted for use at atmospheric pressure.

Abstract: A cutting blade for face milling wherein the cutting blade is constructed to cut a predetermined final dimension of a tooth slot along a portion of the cutting end (i.e. the primary cutting edge portion) of the blade and to cut the remainder of the tooth slot at an amount less that the predetermined final dimension of the tooth slot along the remaining portion (i.e. the secondary cutting edge portion) of the cutting end. The construction of the inventive cutting blade provides sharing of the cutting load amongst the blade cutting edges and also provides sufficient clearance in the tooth slot whereby the cutting blade can be repositioned to allow truing of the cutter, particularly with respect to the primary portion.

Abstract: The invention relates to a device for green machining bevel gears, including a CNC machining station for gear cutting a wheel blank (K2). The machining station includes a tool spindle which is used to receive a gear cutting tool and a work piece spindle which is used to receive the gear blank (K2). The machining station also relates to a machining station which operates in a vertical manner. The device also comprises a vertical processing station having a tool holder and a work piece spindle which is used to receive a work piece blank (K1). The machining station mechanically forms a functional unit together with the pre-machining station, wherein the work piece blank (K1) undergoes green machining in the pre-machining station, and is transferred as a gear blank (K2) to the first machining station after the first green machining where it is cut into a gear. The machining station and the pre-machining station are linked together in terms of data and control.

Abstract: A method of manufacturing bevel and hypoid gear pairs according to an imaginary mating gear cutting process. The tooth spaces are cut by means of a face-mill cutter head rotating about an axis of rotation. In order to overcome heretofore prevailing limitations on the gear diameter, cone angle and shaft angle of gear pairs, either the gear or the cutter head performs an arcuate generating movement about a generating axis in order to produce one of the gears, whereby a machining axis is adjusted relative to the generating axis in accordance with the position of the axes of both gears of the gear pair. In one advantageous embodiment, the same machining axis adjustment is also employed for fabricating the mating, non-generated gear.

Abstract: A method and apparatus for grinding pairs of gear wheels such as spiral or curved tooth bevel gear wheels whereby a first wheel is ground with a male cup-type grinding tool and a second, counter wheel is ground with a female cup-type grinding wheel with an additional eccentric cyclic motion being applied to one of said wheels. In accordance with a preferred feature of the invention, the grinding tools utilized are not exactly complementarily congruent, the female tool differing by an amount that is equal to the amount of the additional eccentric cyclic motion that is effective in the direction of the tooth normal. The additional eccentric motion is preferably elliptical and in accordance with an apparatus aspect of the invention a drive is provided for achieving such elliptical supplementary motion.

Abstract: A method of producing pairs of mating spur gears by cutting tooth gaps with a rotating end cutter head, wherein, in order to manufacture the one spur gear, one of the elements--the spur gear or the end cutter head--carries out an arcuate or circular rolling movement about an axis which coincides or approximately coincides with the gear axis of the other gear, and the other gear is produced by a cutting-in depth or plunge cut operation without any rolling movement.