Face-gear drive: Geometry generation and tooth contact analysis

•Efficient geometry generation of face-gears considering finite length of shaper.•Quantification of shaper cutter inner position on face-gear geometry.•Practicable methods to apply crowning on face-gear flanks and its calculation.•Contact path evaluation due to crowning, profile modification and axis misalignment.•Procedure to define the quantities for crowning and profile modifications based on the contact pattern.