Chip-breaking process where gears are planed using cutters shaped like the tooth space. Beskrivning The process The rack form cutting tool is moved back and forth along the axial gear periphery while the tool slowly moves towards the center until the gear teeth form is achieved. The tool distance to the axis is maintained while the tool continues to oscillate and move along the workpiece tangent while the workpiece is slowly rotated. Gear planing Process films Advantages and disadvantages In comparison with alternative methods Uses cutting tool with only one contact Inner shapes can be created by using a special extension tool Slow method