Abstract: The invention relates to a toothing processing machine comprising a machine frame and a spindle carrier having a first spindle. The spindle comprises a first spindle housing and a first spindle shaft, which is arranged in the first spindle housing such that it can rotate about a first spindle axis, and a free end for receiving a work piece or a tool. A second spindle is also provided having a second spindle housing and a second spindle shaft for receiving a tool or work piece, wherein the second spindle shaft is mounted in the second spindle housing such that it can rotate about a second spindle axis. In addition, at least one wall of the machine frame forms a part of the casing of a closable working chamber, in which the work piece can be processed and which can be closed in order to prevent the release of a material removal, a processing liquid and/or a processing mist from the working chamber into other machine regions or to the outside.

Abstract: A method, and device, for producing gears in gearwheels with a skiving wheel that features cutting teeth, a workpiece spindle for receiving the gearwheel and a tool spindle, wherein the tool and workpiece spindles are positioned at an axial cross-angle relative to one another, wherein the gearing is produced in successive processing steps. Spacewidths between the teeth are incrementally cut deeper. The axial spacing between the tool and workpiece spindles and a turning angle is changed between the processing steps in such a way that a first cutting edge section of the cutting tooth engages on a tooth flank section of a first tooth flank produced during a preceding processing step with an at least reduced material removal referred to other cutting edge sections of this cutting tooth.

Abstract: A method for skiving machining a toothed workpiece includes the steps of: providing the toothed workpiece rotatable about a workpiece axis; providing a toothed tool rotatable about a tool axis; tilting the tool axis through an azimuth angle ?>0° with respect to an x direction; tilting the tool axis furthermore through a polar angle ?<90 ° with respect to a z direction; rotating the toothed tool about the tool axis, the toothed tool in a contact zone sliding over the toothed workpiece rotating about the workpiece axis. The workpiece axis defines the x direction and the perpendicular of the contact zone to the workpiece axis defines a z direction. The x direction, a y direction and the z direction form a Cartesian coordinate system. This method can easily produce a chamber on the toothed workpiece with the toothed tool which is subject to fewer geometric restrictions.

Abstract: A pump unit includes a drive motor (14) and a first housing (2), in which a control electronics unit (18) is arranged for operating the drive motor (14). An operating unit (20) having at least one display or operating element (26, 28, 30) can be detachably connected to the first housing in at least two different positions.

Abstract: Method and an apparatus for setting up and plunging a skiving tool with respect to a work piece, on which a rotational-symmetric, periodic structure is to be manufactured with application of the skiving tool, wherein a radial feed motion in the direction of the work piece is performed, so to bring the skiving tool in contact with the work piece for the first time, and the skiving tool is plunged from the moment of the first contact down to a predetermined depth in a radial plunging movement, before the proper skiving of the rotation-symmetric, periodic structure is carried out.

Abstract: A device for cutting teeth in gear blanks by hob peeling, the device having a workpiece spindle for holding the gear blank, the workpiece spindle being rotationally drivable about a workpiece rotational axis, the device having a tool spindle which carries a peeling wheel having cutting edges and which is rotationally drivable about a tool rotational axis, wherein the tool spindle and the workpiece spindle may be positioned relative to one another at a fixed or variable axis intersection angle, and for the purpose of forward feed and infeed, the tool spindle is movable relative to the workpiece spindle in the radial direction and in the axial direction with reference to the workpiece rotational axis by means of positioning drives, and the device having an electronic control device for controlling the positioning drives and rotationally driving the tool spindle and the workpiece spindle at a specified rotational speed ratio, optionally with a changing phase position.

Abstract: To provide a method of controlling a machine tool and a machine tool which allow preventing relieving interference without using a mechanism for causing an offset between a cutter (13) and a workpiece (50), a controller (40) performs control such that the workpiece (50) is machined by repeating the steps of: machining the workpiece (50) by moving the cutter (13) for machining the workpiece (50) in a direction parallel to a rotational axis of the cutter (50) while rotating the workpiece (50) together with the cutter (13); and returning the cutter (13) to a machining start position again after termination of the machining step, and performs offset control such that the cutter (13) is moved away from the workpiece (50) in a rotation direction of the cutter (13) upon the termination of the machining step.

Abstract: To provide a method of controlling a machine tool and a machine tool which allow preventing relieving interference without using a mechanism for causing an offset between a cutter (13) and a workpiece (50), a controller (40) performs control such that the workpiece (50) is machined by repeating the steps of: machining the workpiece (50) by moving the cutter (13) for machining the workpiece (50) in a direction parallel to a rotational axis of the cutter (50) while rotating the workpiece (50) together with the cutter (13); and returning the cutter (13) to a machining start position again after termination of the machining step, and performs offset control such that the cutter (13) is moved away from the workpiece (50) in a rotation direction of the cutter (13) upon the termination of the machining step.

Abstract: A milling cutter comprises a cutter body having two concentric annular rings. An outer ring is provided for rough milling and includes a plurality of cutting inserts equally spaced about the periphery of a cutter body. An inner finish ring comprises a ring member having a coating of abrasive material. As a result, a workpiece can be milled by a single milling cutter with the rough cutting inserts and then the abrasive material.

Abstract: A process and a machine for fine machining of the tooth flanks of geared workpieces with a driven tool in the form of a gear wheel or worm gear which is in meshing contact with a workpiece, the axes of tool and workpiece intersecting. During machining of the workpiece the tool is driven in a direction of rotation which remains the same and adjustable torque values are applied to the workpiece in one direction and subsequently in the opposite direction.

Abstract: During operation of a gear shaping machine comprising a thrust spindle which accommodates a cutting wheel and is guided and disposed in a guidance on the machine housing, the radial force acting on the cutting wheel during operation is detected by means of at least one sensor disposed in the area of the guidance, which detects the changes of the radial force occurring during operational wear of the cutting wheel and uses increases of the radial force, beyond the tolerance typical for this machine, as a signal for influencing the operation of the gear shaping machine, e.g. for stopping the machine.

Abstract: Centering device acting upon an already present first ring (14a) of a straight or double helical toothing of gears, sprocket wheels or pulleys to obtain the second ring (14b) of the toothing generated by a pinion shaped cutter (16), a central groove (19) separating said first ring and said second ring. The centering device comprising a retractable pin (20, 120), cooperating during the positioning step of the gear (13), with at least a tooth (15) of the first ring (14a), having a first waiting position (20a, 120a) and a second operating position (20b, 120b) defining the angular position of the gear (13) clamped on the rotary supporting base (18), the angular position being functionally correlated to the plane which contains the axis (25) of the gear (11) and the axis (26) of the cutter (16).

Abstract: In a mechanism for the drive of a tool spindle which performs a rotating indexing motion, particularly for the production of gear-wheels, a rocking lever is used which is connected by a displaceable sliding swivel joint to a second member such that linear motion is able to be executed by the second member thereby causing a linear adjusting movement in the indexing mechanism.

Abstract: In order to obtain a desired course of a machining line differing from a straight line or a corresponding flank line of a workpiece profile, it is necessary to control the working point of the tool 2 so that on the rectilinear stroke movement of the tool 2, a movement extending transversely thereto is effected by a tool positioning device 4. Such a device is constructed in the form of a toggle mechanism on which further fine control movements can be imposed through a series of adjustment possibilities.

Abstract: A fixture for manufacturing hubs for flexible gear couplings wherein the teeth of said hub are cut while the hub is being moved constantly through all of the positions that the hub would assume relative to the sleeve during operation with the hub shaft misaligned with the sleeve at the maximum angle of misalignment for which the coupling is designed.

Abstract: A gear shaping machine includes a cutter mounted at the lower end of a spindle and a worm gear surrounding the spindle. A first guide is provided on the spindle and has axially extending guide flutes formed thereon. A second guide is disposed in surrounding relation to the spindle and has axially extending guide grooves formed in an inner surface for sliding engagement with the spindle guide flutes and helically advancing guide flutes formed in its outer surface for engaging corresponding guide flutes formed in the inner surface of the worm gear. A first adjustable eccentric is coupled to the spindle for controlling the vertical movement thereof and a second adjustable eccentric is coupled to the second guide for selectively controlling its vertical movement.

Abstract: A method and apparatus for shaping by generating for producing profiles on workpieces, especially on cylindrical gears. The workpiece and a shaping tool rotate continuously according to a fixed preset transmission ratio. The shaping tool additionally carries out an oscillating movement in the direction of its axis of rotation and thereby generates small cuts on the workpiece during at least two shaping rotations. The small cuts generated after each shaping rotation on the circumference of a circle of contact of the workpiece are provided on the workpiece displaced, relative to the small cuts made during the previous shaping rotation. The apparatus for carrying out the method includes a rotatably driven shaping tool, which carries out a stroke movement in the direction of its axis of rotation, and a rotatably driven clamping device for the workpiece, whereby the rotating motions of the shaping tool and of the clamping device occur continuously according to a fixed preset transmission ratio.

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: 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: An improved universal shaper assembly adapted to rotate various forms of shaper cutters about a vertical axis and, alternately, about a horizontal axis. the assembly is provided with a vertically adjustable horizontal workpiece supporting table for use in conjunction with horizontally rotated shaper cutters. Also disclosed is a horizontal cutter adapter assembly for converting a conventional universal shaper having a vertical spindle to provide a woodworking apparatus for horizontally rotating a shaper cutter over a vertically adjustable workpiece supporting table.