A spacer for gear hobbing machine, a gear hobbing machine incorporating same, and an associated method are provided. The spacer includes a bore. One or more adjustment members are carried by the spacer and adjustable into and out of the bore. Adjustment of the adjustment members allows for varying the position of the spacer when mounted on an arbor of the gear hobbing machine.

A spacer for gear hobbing machine, a gear hobbing machine incorporating same, and an associated method are provided. The spacer includes a bore. One or more adjustment members are carried by the spacer and adjustable into and out of the bore. Adjustment of the adjustment members allows for varying the position of the spacer when mounted on an arbor of the gear hobbing machine.

A method for producing a toothed workpiece gear, wherein the workpiece gear is clamped or fastened to a workpiece spindle, and a cutting tool having cutting teeth is clamped or fastened to a tool spindle. The tool spindle and the workpiece spindle are rotationally driven at a coupling ratio of the angles of rotation thereof having a periodic non-linearity or an axial distance from each other that changes periodically. The cutting teeth machine forms left and right tooth flanks of the teeth of the workpiece gear using left and right cutting edges in a chip-removing manner. A radial run-out error or a pitch error of the cutting tool is determined. The flank line shape errors of the right and left tooth flank resulting from the radial run-out error or the pitch error are reduced by the periodic non-linearity of the coupling ratio or the periodic change in the axial distance.

The present disclosure provides a worm gear machine, including a workbench, a cutter holder and a cutter holder adjusting system, where the cutter holder includes a big bracket, a first slide rail is disposed on the big bracket, a slide seat in sliding fit with the first slide rail is disposed on the first slide rail, a second slide rail is disposed on the slide seat, a small bracket in sliding fit with the second slide rail is disposed on the second slide rail; and a cutter holder spindle is disposed between the big bracket and the slide seat, a cutter bar synchronously rotating with the cutter holder spindle is disposed between an end of the cutter holder spindle facing toward the small bracket and the small bracket, and a gearbox for driving the cutter spindle to rotate is disposed in the big bracket.

The invention concerns a gear-cutting machine for the machining of gear teeth with a gear-cutting tool driven in rotary movement about its tool axis, further with an assembly that includes a tool holder for the gear-cutting tool and is rotatably mounted on a carrier, allowing the tool axis to be set in a desired orientation, with an actuator device through which the assembly can be set to a desired angular position, and with a locking device that allows the assembly to be secured against being dislodged from the set angular position. According to the invention, a protruding arm that is a functional element of the actuator device is coupled to the assembly through a non-rotatable connection.

There is shown a tool holder for a hob, which is embodied as a bore having a clamping device provided between a spindle and a counterholder, the clamping device having a centring clamping piece that is engageable in the hob and a receiving mandrel that is engageable in the hob, the receiving mandrel being braced with the centring clamping piece in order to mount the hob, wherein the centring clamping piece has a flange. In order to ensure the best concentric running properties in a stable manner, it is proposed that the centring clamping piece and the receiving mandrel each have a flange, which each mount a radial adjusting drive with at least one adjusting member that is adjustable with respect to the spindle and/or the counterholder in order to center the clamping device.