Abstract: A method of determining an optimized face cone element for spiral bevel and hypoid gears. The form of the root fillet of one member of a gear pair is determined and that from is transferred to the tip of the other member of the gear pair. With the inventive method, tooth root-tip clearance is optimized and the contact ratio is maximized while avoiding root-tip interference between mating gear members.

Abstract: A method of manufacturing bevel gears with a tool, such as a tapered milling tool (16), wherein the tool is located at a position offset (Rw) from the center position of a conventional face milling cutter and the tool follows a path, such as a circular arc path, during machining.

Abstract: Gear processing machine (4), such as a gear cutting or grinding machine, wherein a chamfering and/or deburring apparatus (2) and auxiliary spindle (10) are included on the same machine. A transfer mechanism (8) loads, unloads and transfers workpieces between a machining spindle (6) and the auxiliary spindle (10) thereby enabling simultaneous cutting and chamfering and/or deburring processes to be carried out. Via the auxiliary spindle, completed workpieces may be removed from the machine and blank workpieces may be loaded into the machine while another gear is being processed on the machine spindle thereby enhancing machine output and creating a more efficient operation.

Abstract: A workholding apparatus comprising a chuck body, first jaw members and second jaw members wherein the second jaw members are shaped to grip a workpiece of a particular geometry. The first and second jaw members are constructed to enable easy, quick and manual replacement of the second jaw members with other second jaw members having different grip shapes so as to enable gripping of workpieces with different geometries.

Abstract: A method and a device for removing secondary burrs raised on the tooth flanks of a work piece wheel by a chamfering of the end tooth edges of said work piece wheel provides a tool wheel that rotationally meshes with the work piece wheel. Said tool wheel has cutting edges on its tooth flanks (5, 6) and their cutting motion, caused by the meshing, removes the secondary burrs by cutting.

Abstract: A spindle for a machine tool comprising a outer spindle portion and an inner spindle portion with each of the outer spindle portion and the inner spindle portion being rotatable relative to one another about the same axis. The outer spindle portion and the inner spindle portion each include a plurality of magnets that are arranged in an opposing manner with respect to one another whereby rotation of one portion of the spindle will induce rotation in the other portion of the spindle due to the attraction force between the magnets.

Abstract: A method of machining gears or other toothed articles wherein the workpiece feed rate and/or the tool shifting is varied so as to produce an irregular surface pattern on tooth surfaces with a resulting reduction in mesh noise. The method is particularly applicable to grinding spur and/or helical gears with a grinding worm.

Abstract: A tool securing device capable of clamping a tool to a machine spindle as well as assisting in the removal of a tool from a machine spindle, all in a tool-less manner. The tool securing device includes distal means to be releasably gripped by a machine draw bar as well as means to releasably engage a tool.

Abstract: A cradle device for large pinion gears or blanks wherein a pinion may be supported and rotated for machining. The cradle device comprises one or more adjustable prismatic units each including a plurality of angular plates that are movable toward and/or away from one another along the width of the cradle device in order to raise and lower, and/or laterally shift, a pinion placed thereon so as to position the pinion for machining.

Abstract: An arrangement for the non-rotational connection between a toothed tool wheel for the machining of end peripheral areas of tooth flanks, having an axis of rotation, and a tool holding fixture that can be rotationally driven around an axis of rotation. Said arrangement has an elastic means with a restoring force against which the direction of the axis of rotation of the tool wheel can be displaced relative to the direction of the axis of rotation of the tool holding fixture.

Abstract: A method of determining a desired power level (P) as a function of relative tool to workpiece position, thereby enabling adaptive control advantages that were previously inaccessible for machining, such as bevel gear grinding, from solid applications. Preferably, set point power is expressed as a function of specific power (P?, P?) and roll position (Q) for a generated gear or as a function of specific power and plunge position for a non-generated (i.e. Formate) gear. Specific power is defined and preferably remains as defined during machining even as process conditions vary during machining.

Abstract: A gear pair set comprising low shaft angle and offset bevel gears and a method for their manufacture including determination of the appropriate gear and pinion blanks and the basic machine settings for their manufacture. The pair of bevel gears comprises a first member and a second member wherein the members of the pair have a shaft angle in the range of greater than 0° to 30°, preferably greater than 0° to 20°, and have an offset in the range of greater than zero to the sum of half the mean pitch diameters of the two members of the bevel gear pair.

Abstract: A method of determining axial and/or radial runout due to workholding equipment and compensating for such runout during machining of a gear wherein axial and/or radial runout compensations are executed during the machining of each individual tooth slot.

Abstract: Method of grinding cylindrical gears with a threaded grinding wheel wherein the amount of grinding wheel material utilized during shifting remains constant as the wheel diameter decreases, for example, due to dressing. The amount of grinding wheel shifting is adjusted as the grinding wheel diameter decreases.

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: A carriage arrangement for a machine tool, which can be adjusted similar to a compound slide, has an increased rigidity against a machining force being taken up by said arrangement in that according to the invention a first carriage (1) can be adjusted relative to a machine base (4) along a first trajectory that is tilted toward the direction of force, and a second carriage loaded with the machining force can be adjusted at the first carriage along a second trajectory that is orthogonal to the direction of force (FIG. 1).

Abstract: In a machine tool with at least two axes of movement (2, 7) defining, respectively, the mobility of a first function-supporting unit (1) and of a second function-supporting unit (5), only the first function-supporting unit (1) is provided with its own servo drive, while the second function-supporting unit (5) is driven by the movement of the first function-supporting unit (1) through a coupler unit (13) that can be switched between an engaged and a disengaged state.

Abstract: A quick-adjust draw rod positioning nut which is attachable to a machine's chuck and/or de-chuck prime mover via a base portion. The positioning nut includes an engagement portion preferably comprising at least two segments that can be held in a collapsed position, where the segments threadably engage a draw rod, or an expanded position, where the segments are out of engagement with the draw rod, depending on the presence or positioning of a ring. In the collapsed position, the engagement portion can be disengaged from the base to permit rotation of the engagement portion and thereby effecting axial movement of the draw rod in order to achieve proper axial positioning of the draw rod in the machine. The engagement portion can be locked in one of a plurality of incrementally spaced rotational positions to adjust the axial position of the draw rod to a desired position.

Abstract: A gear cutting machine wherein a chamfer/deburr device and tool are fastened to a fixed component of the gear cutting machine. In this way, it is possible to adjust the chamfering/deburring tool into the working position in a simple and dependable manner to remove the edges from a gear. The device preferably has a linear track as well as a pivot axis, which can position the tool into the optimum position for the chamfering and/or deburring of the gear.

Abstract: An expandable mandrel for holding a part has a shank with inclined radial slots slidably engaged by keys. The keys are coordinated by a collar which engages an extension on each key. A platen affixes to the shank of the mandrel to provide a stop that will index the position of a part mounted onto the mandrel. The platen has radial key passages to allow longitudinal movement of the keys in the slots. The platen preferably has resilient indexing nubs to engage the part. Preferably, the position of the platen on the mandrel can be adjusted by a set screw engaging one of several indexing holes or engaging a longitudinal guide track. For machining in a wet environment, the slots can be provided with longitudinal rails and the keys provided with transverse channels to remove liquid from between the keys and the slots.