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WO/1994/016245A1 |
The topology of parallel axis gears, such as spur and helical gears is modified to produce quieter and more smoothly operating gear sets with more uniform load distribution. A finite element analysis of the gear in its operating mode is ...
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WO/1994/009937A1 |
Disclosed herein is a face mill type cutter, such as a rotary ring cutter, having means (39, 46, 50, 52) therein to supply coolant to discharge means (54) located between and/or in the surfaces of stock removing means (32), such as cutti...
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WO/1994/005454A1 |
A gear cutting tool has a series of separate cutter inserts (20) removeably clamped to the front ledge (12) of a holder block (10, 40). Each cutter insert (20) has a forward cutting edge (21) that extends beyond the ledge (12) and a rear...
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WO/1994/003298A2 |
In order to optimize the operation of a rotary shaping machine-tool for workpieces clamped in a motor-driven chuck (5), the workpiece discharge channel (14) arranged in the chuck (5) and a motor drive are provided so that the chuck stops...
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WO/1993/019881A1 |
The invention concerns a method and device for simultaneously working different parts of the surface of one and the same workpiece using two abrasive wheels. The method calls first for the smooth-polishing positions of the two abrasive w...
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WO/1993/016832A1 |
According to the invention, the workpiece (1) is fixed onto a headstock spindle rotated by driving means about a spindle axis (I-I). A turning tool (3) is mounted onto a tool-carriage which is movable in translation according to a transv...
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WO/1993/015447A1 |
In order to be able with a linear adjusting arrangement, especially for adjusting the drive for a moved workpiece or a moved tool on a machine tool, to adjust a periodic command variable (w), if possible without any difference in adjustm...
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WO/1993/011901A1 |
Disclosed herein is a rotary cutter for cutting gears and the like. The rotary cutter has an axis of rotation (20) and comprises a disc-shaped cutter head (10) having a circumferential edge surface (12). The cutter head (10) further incl...
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WO/1993/010932A2 |
Disclosed herein is a hobbing machine particularly for the production of spur and helical gears. The hobbing machine is characterized in that a separate mechanism for hob shifting is not required. The hob shifting, as well as other machi...
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WO/1993/007984A1 |
The invention concerns a fly-cutter with a deburring wheel (10) which is mounted in a holder and which can be brought up against the workpiece (4). In order to improve the performance of such a cutter, the invention proposes that the deb...
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WO/1993/006962A1 |
The invention concerns a machine for the precision machining of toothed workpieces (1), in particular gearwheels, the machine having a driven tool (2) with honing stones (9) which exert an abrading action on the flanks of the teeth of th...
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WO/1993/004810A1 |
Disclosed herein is a process and apparatus for grinding tooth surfaces of spur and helical gears by a generating method. The outer tooth surfaces (4) of a theoretical ring gear (6) are conjugate to the grinding surfaces (3) along the wi...
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WO/1993/003297A1 |
In order to obtain a tapering transition between a shaft (1) and the core diameter of the endless screw (3), a roughing cutter (5) is mounted upstream of the disk milling cutter (4) used to mill the screw (3), in the axial direction. The...
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WO/1992/020474A2 |
The device and the method of the invention relate to the cold-forming by rolling of revolution parts (7). The device is comprised of two similar serrated rollers (9A, 9B) arranged symetrically with respect to the part to be formed (7), a...
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WO/1992/018279A1 |
For the finishing of hardened crown wheels in which a crown wheel (11) to be worked meshes with a cylindrical honing pinion (13) whose geometry corresponds to that of a working pinion which must be able to mesh with the worked crown whee...
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WO/1992/018281A1 |
Disclosed herein is a rotary cutter for cutting gears, couplings and the like. The rotary cutter comprises a cutter head (12) having an axis of rotation (12), a centering disc (24) located adjacent to a side (6) of the cutter head (12) a...
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WO/1992/018278A1 |
The method for machining the helical grooves of an hour-glass screw for a compressor or expander of the screw and gate-rotor type, uses a tool (8) slidably mounted in a passageway (19) of a rotatable tool-holder shaft. The tool (8) will,...
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WO/1992/018280A1 |
A rotary disc cutter for cutting workpieces, especially gears and the like. The rotary cutter comprises a plurality of cutting blades arranged about the periphery of a rotary disc cutter body (1) with at least a portion of the blades bei...
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WO/1992/016329A1 |
A shaper cutter (10) includes an elongated body (11) having a flat forward end surface perpendicular to the axis of the body and having teeth (12) formed around its periphery, and further includes a thin insert (26) being mechanically se...
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WO/1992/014574A1 |
A method is disclosed wherein standard generating motions for the production of bevel and hypoid gears are modified by the substantially simultaneous inclusion of additional controlled motions which enable a desired tooth surface geometr...
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WO/1992/011967A1 |
Crown wheels (21) are ground on a grinding machine with the aid of a hobbing grinding disc (11) of ceramic material which is formed on the same grinding machine with the aid of a dressing crown wheel (13) with one or more teeth (14) prov...
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WO/1992/010322A1 |
To minimize the clearances and the spread of the clearances between the interacting rotors in rotating machines of displacement type, working as compressors, expanders, pumps and similar machines, the flanks of at least one of the rotors...
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WO/1992/009395A1 |
A tool for producing crown wheels by means of a generating process comprises a disc which is rotatable about its axis, with machining elements which are provided on the periphery thereof and the cutting edges of which lie in the outer su...
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WO/1992/008895A1 |
A gerotor pump comprises the usual lobed annulus (30) containing the lobed rotor (not shown in figure 2) which is journalled on cylindrical boss (36). The boss is free to turn on the eccentric pin (38) between positions controlled by lim...
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WO/1992/005004A1 |
At present, workpieces with a basically circular shape with tooth-like projections, e.g. gearwheels, can only be manufactured using hob-milling or hob-cutting techniques requiring expensive tools. By superimposing at least two circular m...
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WO/1992/004153A1 |
Prior art non-generated, tip-relieved spiral bevel gears had tip-relieved surfaces that were nonuniform from the toe to the heel thereof. The subject tip-relieved spiral bevel gear (10) is adapted to be manufactured by a gear generating ...
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WO/1992/004665A1 |
A control system for a hydro-mechanically stroked gear shaper provides control and diagnostic functions. The control system includes a video display and a microprocessor. The microprocessor is programmed to monitor load force imparted by...
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WO/1992/003259A1 |
A tool (42), for dressing both the inside and outside working surfaces (92, 94) of cup-shaped abrasive wheels (28) used for grinding gears, is disclosed along with methods and apparatus for using the tool (42). The working portion of the...
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WO/1992/002328A1 |
A process of forming the longitudinally curved teeth of bevel and hypoid gears is disclosed. A dish-shaped tool (2) is oscillated relative to a work gear (12) with the oscillating causing the dish-shaped tool (2) to swing through an arc ...
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WO/1991/020021A2 |
Method and apparatus for stock dividing gear-shaped workpieces (10) mounted on the work spindle (12) of a gear-finishing machine tool. A work spindle encoder (22) provides instantaneous angular position information when the surface of le...
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WO/1991/016673A1 |
A multi-purpose probe module (82), comprising both a touch-trigger type contact probe (84) and a non-contact type probe (86), is used in method and apparatus for monitoring and adjusting the accuracy of a computer-controlled machine for ...
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WO/1991/015323A1 |
A method of forming a relief at the toe end (26) of the teeth on a bevel gear (12) is disclosed. The width of the blades that cut the longitudinally extending convex (24) or concave (22) profiles of the flanks of the teeth is increased t...
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WO/1991/014979A1 |
A numeric controller for controlling an NC gear cutting machine tool such as a gear hobbing machine. A feedback pulse signal from a position coder (7) coupled to a hob shaft (3) operate a shaft control circuit (14) disposed in synchroniz...
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WO/1991/010528A2 |
A gear-shaped tool (30) having stock removing surfaces (38) is rotated together with a bevel or hypoid work gear (32) in accordance with their respective number of teeth, said gear-shaped tool (30) and said work gear (32) for generating ...
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WO/1991/004830A1 |
A method and apparatus for making a globoid screw for use as a mainrotor (12) in a compressor or expander wherein a cylindrical rotor body (60) is mounted for rotation about the longitudinal axis thereof, a cutter (68) having a plurality...
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WO/1991/004819A1 |
A cutter for producing face gears, comprising a disc-shaped cutter body with cutting teeth (23) fitted on the periphery. The cutting edge (24) of each cutting tooth lies in a surface of revolution which is produced by turning an imaginar...
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WO/1991/004120A2 |
The machine includes a fixed support structure (2) with a hydrostatic unit for supporting a spindle (4) carrying a shaving blade (6). The hydrostatic support unit includes a first radial hydrostatic bearing (8) arranged at one end (10) o...
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WO/1991/002201A1 |
The machine includes freely-rotatable means (36, 38) for supporting the gear (10) to be worked. A drive gear (48) is arranged to mesh with the gear (10) to be worked and the end edges are chamfered by means of a hob (18) which meshes wit...
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WO/1990/015685A1 |
A broaching machine, in particular a vertical broaching machine for helical gearing, comprises a machine frame (42) with a frame to which a carriage (14) is fastened. A pot broaching tool holder (12) mounted on the carriage (14) has an i...
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WO/1989/010225A1 |
One-piece endless screws are used in container-filling installations in order to maintain an incoming sequence of containers at a predetermined distance apart. One-piece endless screws for rotationally asymmetrical moulded vessels are cu...
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WO/1989/008006A1 |
A rotary dressing roller of the generating type and a method and apparatus for dressing a substantially cup-shaped grinding wheel for longitudinally curved tooth gears. The rotary dressing roller (40) is provided with a base portion (42)...
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WO/1989/005705A1 |
A method of determining longitudinal and profile modifications to the surface of an instrument tooth (1) linearly conjugating with a gear-wheel being machined consists in determining the modification parameters under the following relati...
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WO/1989/005703A1 |
A machine tool for making and trimming of instruments and finishing of gears comprises three spindles (4, 5, 15) mounted in their stocks (2, 3, 17) and provided with drives (8, 11), two of the spindles (4, 5) being synchronously intercon...
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WO/1989/005704A1 |
A method of making an abrasive geared instrument, conjugating with a machining gear wheel (2), from a flat abrasive disk (1), consists in axially feeding the flat abrasive disk (1) and providing in the contact zone for the presence of a ...
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WO/1989/002330A1 |
This invention relates to a hob cutter for cutting gears and more particularly to a hob cutter or rack cutter capable of simultaneously cutting and chamferring an involute gear. The hob cutter in accordance with the present invention is ...
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WO/1989/001838A1 |
A computer controlled machine for forming longitudinally curved tooth bevel and hypoid gears having a minimum number of movable machine axes for setup and operation. The movable axes include three rectilinear axes (X, Y and Z) and three ...
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WO/1988/009706A1 |
A grinding machine for continuous rolling grinding of toothed wheel work has a work piece (6) clamped on to a machine bed plate (1) and a grinding worm (8), whose rotary drives are connected through a play-free mechanical hypoid bevel ge...
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WO/1988/006944A1 |
A shaving machine of automatic cutter replacing type, wherein a main spindle (2) of a cutter head (1) supported movably upward and downward by a column (34) has a part for mounting a cutter (3) having a mechanism to mount and dismount a ...
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WO/1988/006953A1 |
A rotary dressing roller of the generating type and a method and apparatus for dressing a substantially cup-shaped grinding wheel for longitudinal curved tooth gears. The rotary dressing roller (40) is provided with a base portion (42) w...
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WO/1988/004973A1 |
A process is used to machine workpiece blanks (14) by stock-removal in order to manufacture spiral compressor blades. The blades have at least a spiral wall (13) that extends perpendicularly to a plate (12) having an essentially planar s...
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