Abstract: A method of producing a member with a face-geared surface. An example of the method includes an initial process preparing a work piece and a hob, and a geared surface forming process forming a geared surface on a part of the area. In addition, at least one of the hob and the work piece is retracted in the radial direction of the hob. Further, the geared surface forming process and the retracting process are repeated to produce a full face-geared surface on the work piece.

Abstract: The hobbing machine has a tool assembly with a tool spindle and a workpiece holding assembly with a workpiece spindle. A first drive unit for driving the tool spindle is provided. A second drive unit for driving the workpiece spindle is provided. The tool spindle and/or the workpiece spindle is a rotor of the first and second drive unit so that the tool spindle and/or workpiece spindle can be directly driven by the drive unit.

Abstract: Gear teeth of the gear being worked are machined by rotating the gear with a gear-type machining tool moved radially into tangential contact with the gear being worked. The relative of rotation rates of the gear and the tool are determined by the number of gear teeth in both the gear and the tool. The tooth width of the gear-type machining tool, which may be a worm gear, is less than the finished measurement of the tooth space of the gear being worked. When the gear-type tool reaches the prescribed manufacturing center distance, it is contiguous with the gear from one frontal face to the other. Two flanks of the gear are machined by feeding either the gear or tool in a direction perpendicular to the radial direction of movement so that the teeth of the tool can machine the gear tooth flanks as the gear and the tool rotate. First one flank of each tooth of the gear may be machined and then, by reversing the movement direction, the other flank of the tooth is machined.

Abstract: The hobbing machine is of simplified construction and is dedicated essentially to forming only a single type of gear or a narrow range of gears. To enable the machine to be of simplified construction, its drive train consists of only four gears and its hob head is mounted to pivot around the axis of the drive shaft for the work spindle. The arrangement of the four gears together with the pivotal movement of the hob head enables the hob spindle to be inclined at a predetermined setting angle relative to the work spindle and enables the center distance between the spindles to be selectively changed.