A machine tool (1) for processing gears comprises a workpiece spindle (16) for driving a workpiece (18) to rotate about a workpiece axis (C1), and a tool spindle (11) for driving a tool (12) to rotate about a tool axis (B). An axial slide (7) is used to change a relative axial feed position between the tool spindle and the workpiece spindle with respect to the workpiece axis. The axial slide is guided along an axial guide direction (Z′) which is inclined with respect to the workpiece axis by an inclination angle (ψ), the inclination angle (ψ) being between 0.1° and 30°.

A gear machining support device supports machining when a tooth of a gear is machined on a workpiece by relatively moving the workpiece and a machining tool while synchronizing rotations of the workpiece and the machining tool around respective center axis lines thereof. The gear machining support device includes: a target modification amount storage unit configured to store target modification amounts of at least two of modification elements of a tooth surface shape of the tooth of the gear, the modification elements including crowning, bias, a helix angle, a pressure angle, and a tooth profile roundness; and a correction amount determination unit configured to determine a correction amount of a machining control element during a machining operation such that the at least two of modification elements approximate the respective target modification amounts stored in the target modification amount storage unit.

The invention concerns a method for the machining of toothed workpieces, in particular for the plastic reshaping of the tooth edges at the ends of the teeth through a meshing tooth engagement with a tool that is rotatable with free-running mobility about its axis of rotation, in particular a chamfering tool, wherein between the machining of one workpiece and the next, the tool is subjected to a traverse movement, whereby the tool is caused to perform a rotary movement so that, if a tool region (6a, 6b) that is designed for the initial engagement with the work pieces is not suitably positioned, it is brought into a position that is suitable for the machining of the next work piece, wherein the rotary movement is effected by coupling the rotary movement at least in sections to the traverse movement.

A gear machining device is provided which can machine an accurate gear by a cutting process by synchronously rotating a machining tool and a workpiece at a high speed. A machining tool includes roughing cutting teeth for roughing bottom lands and right and left side faces of teeth of a gear, right side face finishing cutting teeth for finishing the right side faces of the teeth, and left side face finishing cutting teeth for finishing the left side faces of the teeth. The cutting teeth thus cut different parts of the teeth of the gear. This can reduce cutting resistance and suppress self-vibration during the cutting process, thereby improving tooth trace accuracy of the gear.

A simulation apparatus includes: a memory to store information on the shape of a workpiece, information on a cross section of a portion of the workpiece, and information on definition points indicating the shape of an edge surface of tool edges of a machining tool; a first calculator to perform a calculation to obtain passage points in a three-dimensional coordinate system; a second calculator to cause the cross section in the three-dimensional coordinate system to be disposed parallel to a plane defined by predetermined two of the axes of the three-dimensional coordinate system, thus converting the passage points in the three-dimensional coordinate system into passage points in a two-dimensional coordinate system; and a third calculator to decide, in accordance with the passage points in the two-dimensional coordinate system, the shape of a tooth profile to be formed on the workpiece in the two-dimensional coordinate system.

A coolant delivery assembly configured for use with a gear cutter tool that cuts gear teeth into a workpiece to form a gear includes a retaining cooling nut, a tool holder and a coupling member. The retaining cooling nut has a nut body that defines a plurality of coolant flow passages therein. The tool holder supports the gear cutter tool. The coupling member couples the retaining cooling nut to the mount. The retaining cooling nut is configured to receive coolant and deliver the coolant through the plurality of coolant flow passages and direct the coolant toward the gear cutter tool.

A method for producing gears, includes the following: machining of gears with a gear tool in a single-indexing method, wherein the gear tool produces tooth gaps on each of the gears by machining. A pitch compensation with compensation parameters is predefined for the gears; wherein the compensation parameters are predefined by a machine control as a function of a wear condition of the gear tool.

A method for the grinding finish machining of an already toothed gearwheel workpiece in an NC-controlled machine tool, comprising the following steps: a. providing the gearwheel workpiece in the machine tool, b. providing a first grinding tool in the machine tool, c. providing a second grinding tool in the machine tool, d. grinding machining of at least one tooth flank of the gearwheel workpiece using the first grinding tool, e. grinding machining of at least one tooth flank in the transition region to the tooth head of the gearwheel workpiece using the second grinding tool in the machine tool to generate a head edge rounding on the gearwheel workpiece, f. further grinding machining of at least one tooth flank of the gearwheel workpiece using the first grinding tool and/or the second grinding tool in the machine tool.

The invention relates to a method for machining a toothing (2) having an axis of rotation (C), in which a machining tool (4), which is rotationally driven about its axis of rotation (B), removes material from the toothing while executing a relative motion between the machining tool and toothing to generate a flank geometry of the toothing, which has been predefined over the full width of the toothing, in a machining operation, wherein the predefined flank geometry matches a motion control that defines a motion path of the tool center with respect to the toothing axis of rotation, said motion control having a defined, non-vanishing axial advancement with a defined advancing motion between machining tool and toothing, wherein in a first machining process, the relative motion is only executed for generating a part, more particularly a significant part (5), of the flank geometry according to this motion control, while a further part, more particularly the remaining part (6), of the flank geometry is generated in a second machining process, in which the distance between the tool center and the toothing axis of rotation with respect to the fixed motion path changes in a manner wherein the tool center moves away from the toothing, and in which the change to the machining operation caused thereby is counteracted by an additionally executed change in motion of the relative motion with respect to the motion control of the first machining process.

A generating device based on friction drive for gear involute artifact with long-rolled path length by rolling method is proposes. The device includes a roller component, rail component and friction-driven component, wherein the roller component consists of a gear involute artifact with long rolled length, a mandrel, a multi-ball bearing for gear involute artifact, the base-circle plates, the parallel sleeves, a multi-ball bearing, the plain washers, the cross washers, and the locking nuts; the rail component consists of a foundation, a location baffle for base-circle plates, rails, the baffles, a location baffle for rail, copper washers, the connecting screws and the set screws of the rail; and the friction-driven component consists of a friction block, a motorized linear sliding table, a vertical sliding table, a vertical foundation and an adapter. It has good market application prospect and popularization value.