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 clamping or chucking apparatus for a shaper cutter for a gear shaping machine, especially a generating shaping machine for fabricating gears, containing an axially to-and-fro movable ram spindle and a shaper cutter holder affixed at one end of the ram spindle and having a contact surface for the shaper cutter. A centering projection protrudes axially away from the contact surface and serves for mounting the shaper cutter. A clamping plate is attached at the end of the centering projection over a clamping mandrel or plug. The coaction of the clamping plate and clamping mandrel serves to clamp the shaper cutter against the contact surface of the shaper cutter holder. The ram spindle is hollow and contains a spring arrangement and a piston. The spring arrangement is prestressed in order to exert an axial clamping force and is operatively connected by a coupling with the shaper cutter holder or shaper cutter.