Abstract: The present invention shows a process for gear manufacturing machining a workpiece by a tool on a gear manufacturing machine, wherein the workpiece is machined by a generating machining process in which the tool for gear manufacturing machining rolls off on the workpiece at a predefined center distance and axial cross angle, wherein the gear manufacturing machining preferably takes place on two flanks, with a desired tooth trace shape and/or tooth thickness of the gearing being generated by the generating machining process. The process is characterized in that an additional condition is predefinable and in that the center distance and the axial cross angle are determined in dependence on the desired tooth trace shape and/or tooth thickness of the gearing and on the additional condition.

Abstract: The axis of rotation of a gear wheel subjected to thermal treatment and comprising at least one intermediate crown wheel and a pair of lateral tubular hubs arranged on opposite sides of the crown wheel is restored automatically by coupling a first of the hubs to a head rotating about a fixed axis of own rotation axis, displacing the other hub in a direction transverse to the fixed axis until both of the hubs and the crown wheel are brought into positions substantially sharing the fixed axis and providing on each of the hubs a respective centring surface sharing the fixed axis without uncoupling the first hub from the rotating head and keeping the gear wheel in a vertical and angularly fixed position.

Abstract: The invention relates to a method for tooth-machining of workpieces (3), especially gear wheels, comprising milling, deburring by hobbing and integrated secondary deburring. The method proceeds on a machine tool (1) having two workpiece spindles (11, 12) which may exchange places. A workpiece (3) is mounted on a first workpiece spindle (11), followed by the workpiece spindles (11, 12) exchanging places, followed by pre-milling and, where applicable, cutting (=deburring by shaving) of the workpiece (3), followed by a further exchange of places, followed by chamfering and cutting of the workpiece (3), followed by a further exchange of places, followed by a finish-milling of the workpiece (3), followed by a further exchange of places, followed by a workpiece change. At the same time, the same procedure takes place on the second workpiece spindle (12), staggered in time by an exchange of places of the workpiece spindles (11, 12).

Abstract: A method and a device for forging a bevel gear. The device includes a punch, a work positioning and holding die positioning and holding a work placed on the placing surface of a lower die, and an outer burr removing die removing outer burrs produced on the outer peripheral surfaces of the teeth of the work. In the state of the work positioned and held at a prescribed position by the work positioning and holding die, the inner burrs and the outer burrs of the work are simultaneously removed by the integrated lowering operation of the punch and the outer burr removing die.

Abstract: An internal gear shaving machine 1 which brings a shaving cutter 3 and an internal gear held by a workpiece chuck 2 into engagement with a crossed axes angle, and subjects the tooth flanks of the internal gear to final machining while it rotationally drives at least one of the shaving cutter 3 and the workpiece chuck 2. The workpiece chuck 2 and shaving cutter 3 are supported movably toward and away from each other in a vertical direction with the workpiece chuck 2 higher and supported movably in the horizontal direction relative to each other. The workpiece chuck 3 is constituted to hold the outer circumferential surface of the internal gear with the axis of rotation of the internal gear oriented in a up-down direction so that shavings produced during processing by the shaving cutter can fall downwardly from the internal gear.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debut tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debur tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: A tool for chamfering and deburring of end face tooth edges of spur and helical gears comprising (1) at least one rolling deburring wheel for machining the tooth edges, arranged at an end face relative to the workpiece and meshing therewith, and (2) a toothed spacer wheel, positioned axially adjacent to the rolling deburring wheel and fixedly connected thereto and meshing with the workpiece. The spacer wheel being formed as a driving wheel about a portion of its periphery and as a smoothing wheel for machining the edge zones of the tooth flanks about the remaining portion of the periphery. The spacer wheel is divided into at least two discs which are connected to one another so as to be rotationally adjustable.

Abstract: A tool for chamfering and deburring of end face tooth edges of spur and helical gears comprising (1) at least one rolling deburring wheel for machining the tooth edges, arranged at an end face relative to the workpiece and meshing therewith, and (2) a toothed spacer wheel, positioned axially adjacent to the rolling deburring wheel and fixedly connected thereto and meshing with the workpiece. The spacer wheel being formed as a driving wheel about a portion of its periphery and as a smoothing wheel for machining the edge zones of the tooth flanks about the remaining portion of the periphery. The spacer wheel is divided into at least two discs which are connected to one another so as to be rotationally adjustable.

Abstract: Apparatus for chamfering and deburring the tooth end edges of straight and skew-teeth gears, comprising at least one deburring wheel arranged endways with respect to the work and meshing with it in finishing the tooth edges, comprising a toothed guide gear arranged axially beside the deburring wheel, joined to it nonrotatably and meshing with the work, comprising at least one secondary burr disk arranged rotatably endways with respect to the work on the same side as the deburring wheel and finishing the tooth edges, and comprising a machine frame featuring a work clamping fixture and a bed for a slide supporting the tool consisting of deburring wheel and guide gear, and supporting the secondary burr disk, said slide allowing infeed transverse to the axis of rotation of the work.

Abstract: A method for shaving and shave grinding tooth flanks of cylindrical workpiece gear wheels, especially, flank-line modified gear wheels, and for profiling tools needed for shave-grinding cylindrical workpiece gear wheels. During the machining of gear wheels, certain areas of the gear wheel need to be machined more so than other areas, meaning that some areas require more material to be removed than other areas. As a result, certain areas of the tool are not uniformly worn, but rather the area of the tool which removes the most material is worn more quickly than other areas of the tool. Similarly, if certain areas of the gear wheel are harder than other areas, the tool performing the actual machining will wear at a corresponding rate. The present invention avoids such non-uniform wear by providing greater areas of cutting surface on the tool performing the actual machining in the positions which are required to remove the most material, or which are required to machine the hardest surfaces of the workpiece.

Abstract: A gear finishing apparatus with helix compensation is disclosed, in which a helical gear is supported and rotated on a table by a gear holder and a tail stock, a finishing wheel is supported and rotated on a slider that can move toward and away from the finishing wheel in a substantially perpendicular direction to the gear axis, and the table and the slider are structured to relatively reciprocally move in the gear axis, wherein the gear holder comprises a drive motor for rotating a holder shaft for holding the helical gear; and a compensation drive unit by which a motor drum holding the drive motor is rotated about the gear axis, thereby compensating the circumferential speed in accordance with the helix angle of the helical gear during the relative movement of the helical gear and the finishing wheel in an axial direction of the gear and realizing high accuracy in the tooth profile of a helical gear.

Abstract: Gear-shaped precision-working tools, in particular shaving gears, capable of providing an optimum machining result only during a portion of their entire lifetime, since during each regrinding (generating), the profile displacement factor, and thus the number of the tooth flanks which engage successively and simultaneously one after the other the workpiece gear to be machined, is changed. This is remedied with the invention in such a manner that the precision-working tool is reground (generated) while maintaining the original number of teeth (z) and the original normal module of the pitch angle (.beta.), the module in transverse section and the base circle diameter are changed in such a manner that little or no change occurs to an original profile displacement factor (x).

Abstract: A machine for the precision working of the tooth flanks of toothed workpieces with a gearlike tool, for example, a shaving gear or the like, which is in a two-flank generating engagement with a workpiece. The workpiece is supported stationarily, however, rotatably on a machine bed and the tool is mounted on a tool head arranged rotationally adjustably about an adjusting axis directed perpendicularly with respect to the tool axis and with respect to the workpiece axis and in a rockable slide member pivotal about a horizontal axis on a cross slide movable in a horizontal direction. The cross slide is guided in a feed slide which is also movable in a horizontal direction. The two directions of movement are offset at 90.degree.. The feed slide is guided in a feed carriage movable in a vertical direction.

Abstract: A workpiece gear to be finished is held in mesh with a gear finishing tool with substantially no backlash therebetween. The gear finishing tool is then driven in mesh with the workpiece gear, and the workpiece gear is rotated in synchronism with the driven movement of the gear finishing tool. Simultaneously, the gear finishing tool and the workpiece gear are moved reciprocally with respect to each other in the direction of a tooth trace for finishing gear surfaces of the workpiece gear. With this gear finishing method, gears can be finished highly accurately with no profile error and at an increased rate. An apparatus for carrying out the gear finishing method is of a simple construction.

Abstract: The invention concerns an automatic loader for gear shaving machines. The machine utilizes a rotary cutter which meshes with the gear to be shaved. The gear is brought into a shaving position by a loader having a moveable feed member including a first slide which moves in a vertical direction and a second slide which moves in a horizontal direction. The gear to be shaved is supported by a first end of a rocker arm. The rocker arm is centrally articulated about the first slide and is connected to a gas spring at its second end. When the gear approaches the rotary cutter but fails to mesh with it the rocker arm is angularly displaced and actuates an electronic switch. The switch controls the movement of the vertical and horizontal slides and readjusts the position of the gear until it successfully meshes with the rotary cutter.

Abstract: Apparatus for the manufacture or working of the tooth system of straight or helically toothed, externally or internally toothed gears with a hyperboloidally or globoidally or similarly formed toothed tool, which has an abrasive surface or the like, wherein a crossed-axes angle is provided. The intermeshed workpiece-tool is guided by a pair of guide wheels. The working takes place on only one flank of a tooth. The workpiece or tool spindle is coupled with a reversible motor. A brake is provided on one of the spindles. A shiftable coupling and additional brakes or centrifugal masses can furthermore be provided.

Abstract: In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.

Abstract: An apparatus for orienting the position of a machine tool carriage relative to a stationary machine part, which machine tool carriage is movable in a plane defined by orthogonally related X and Y axes. In a first embodiment, the carriage is freely movable on a holder parallel with respect to the X axis and the holder is arranged freely movably in the stationary machine part parallel with respect to the Y axis. In a different embodiment, two pairs of steering knuckle arms are provided and which are arranged symmetrically with respect to the carriage. Each pair of arms consists of two hingedly connected steering knuckle arms which define a right angle with one of each thereof being hinged to the carriage, the other one to the stationary machine part. Two modifications are described for the design of the joints. The apparatus can be used, for example in machines for the precision working of gears.

Abstract: In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.

Abstract: A method and an apparatus for shaving, rolling or similar ones of the tooth flanks of gears in which a gearlike workpiece which is to be worked is supported stationarily, however, rotatingly and is in a two flank meshing engagement with a toothlike tool. The tool carries out a rectilinear back-and-forth feed movement in a plane, which is parallel with respect to the workpiece axis, a plunge movement perpendicularly with respect to the workpiece axis and a swivelling movement about an axis which is directed transversely with respect to the feed direction. To produce crowned tooth flanks, the plunge feed and the swivelling movement of the tool is changed independently from one another in dependency of the respective position of the tool along the feed path. A rocking device is provided on which is arranged the tool and which also takes part in the back-and-forth feed movement and which furthermore can be driven pivotally about an axis which extends transversely with respect to the feed direction.

Abstract: A sliding member having two gripping devices removes a finished workpiece from a machine and at the same time introduces a blank workpiece. The sliding member carries out a rectilinear feed and return movement, for which it is hydraulically driven. All movements of the two gripping device systems are controlled by cams, including (1) opening and closing the finished part gripping device when picking up the finished part, (2) swivelling the finished part gripping device approximately 90.degree., (3) opening and closing the blank gripping device as the sliding member is returned, (4) again erecting the finished part gripping device when outside of the machine, and (5) stabilizing the blank and finished part gripping devices during movement of the sliding member.

Abstract: A machine for the precision working of tooth surfaces on toothed workpieces. The machine has a frame, a rotatingly drivable gearlike tool which is arranged substantially above the workpiece on the frame and structure supporting the tool for movement into a tooth engaging relation with the workpiece. Structure is also provided for adjusting a crossed-axes angle between the tool and the workpiece. Guide structure is provided for effecting a change in the spacing between the geometric centers of the tool and the workpiece during a machining operation. The workpiece is stationarily mounted on the frame and all guideways on the frame required for facilitating an adjustment of the tool and during the working operation are arranged substantially above the workpiece. Additional structure is provided for facilitating an adjustment of the axis of rotation of the tool about both horizontal and vertical axes.

Abstract: A secondary working apparatus for secondarily machining a blank formed with internal serrations on a cylindrical plane, comprising a stationary housing structure, support means for supporting the blank with the center axis of the cylindrical plane fixed with respect to the housing structure, a plurality of shafts each having a center axis parallel with the center axis of the cylindrical plane and rotatable with respect to the housing structure about an axis coincident with the center axis of the shaft and an axis coincident with the center axis of the cylindrical plane, each of the shafts having a cylindrical eccentric axial portion having a center axis parallel with and radially offset from the center axis of the shaft, cylindrical machining tools coaxially carried on the eccentric axial portions of the shafts, respectively, and each having a center axis coincident with the center axis of the eccentric axial portion of each of the shafts, and an annular guide gear coaxially held in position about the center

Abstract: A secondary working apparatus for secondarily machining a blank preliminarily formed with internal serrations, splines or teeth on a cylindrical plane, comprising a stationary housing structure, support means for supporting the blank with the center axis of the cylindrical plane fixed with respect to the housing structure, a plurality of shafts each having a center axis parallel with the center axis of the cylindrical plane and rotatable with respect to the housing structure about an axis coincident with the center axis of the shaft and an axis coincident with the center axis of the cylindrical plane, each of the shafts having a cylindrical eccentric axial portion having a center axis parallel with and radially offset from the center axis of the shaft, and generally cylindrical machining tools coaxially carried on the eccentric axial portions of the shafts, respectively, and each having a center axis coincident with the center axis of the eccentric axial portion of each of the shafts, the machining tools incl

Abstract: A machine for the precision working of tooth surfaces on a toothed workpiece stationarily but rotatably mounted on a machine frame, by using a tool, for example a shaving gear, arranged above the workpiece and which is rotatably drivable. The tool is mounted on a tool carrier which in turn is mounted on a guide carrier, which tool carrier is longitudinally movable and which is swingably suspended on a horizontal bolt. The tool carrier has a guide arm which is guided in a pivot member. The horizontal bolt, which for the purpose of adjusting the feed direction can be rotated about a vertical axis, is also adjustably inclinable in a vertical plane to enable the production of slightly conical teeth according to an underpass machining method.

Abstract: In an apparatus for mutually positioning a toothed chamfering/deburring tool and a gear to be worked, the gear rolls along an inclined rack until engagement with a stop disposed therealong in a predetermined position of the gear relative to the tool, which is formed with a first rotary detent member engageable with a second detent member for locating the tool in a predetermined angular position in which teeth of the tool and the gear can mesh when the tool and the gear are moved into engagement, the tool being rotated by a nozzle directing a stream of liquid against at least one tooth of the tool until the engagement of the first and second detent members.

Abstract: A machine for precision working, for example shaving, of the tooth flanks of a toothed workpiece supported rotatably on a machine frame. A tool carrier carries a multi-toothed tool, for example a shaving cutter, and is supported substantially above the workpiece for rotative adjustment of the crossing of the axes of the workpiece and tool, about an axis perpendicular to the workpiece axis. The tool carrier is guided movably in a guide carrier and is driven for longitudinal feeding of the tool. The guide carrier is suspended swingably about a horizontal axis for spherical or conical tooth working. The guide carrier is supported pendantly from a swivel plate which is swingable and lockable about an axis perpendicular to the workpiece axis for adjusting the feed direction. The tool carrier is guided by a guide arm which is adjustable in its inclination and is securable by a pivot member on the swivel plate.

Abstract: Machine for finishing gear wheel teeth by shaving or rolling by means of a toothed rotary tool adapted to operate in tight meshing engagement with the gear wheel for finishing the teeth thereof, which comprises means for supporting the tool along its axis of rotation, a motor for rotatably driving said tool, means for supporting said gear wheel along its axis of rotation, the two axes of rotation of the tool and gear wheel, respectively, having at least one common perpendicular, and motor means for generating between said tool support means and said gear wheel support means, three powered relative movements comprising a movement in a direction parallel to said common perpendicular and two movements transverse to each other in planes respectively perpendicular to said common perpendicular, the motor for rotatably driving said tool and the motors for producing said two transverse movements being responsive to synchronous programmable servo-control means.