Unless you intend filing the teeth by hand, a small mill?and a rotary table are almost essential, and even then due to the size of the parts it will be tedious work.
Ideally a CNC mill with the rotab as the 4th axis would be best.?
You could cut and size the parts on your lathe then transfer them to a chuck or collet on the rotab for correct indexing to a cutter on the mill.
