This electric motor armature production line including: shaft pressing machine, end plate pressing machine, commutator pressing machine, armature insulation paper inserting machine, armature winding machine, commutator hot stacking machine, armature wedge inserting machine and armature testing machine.
https://www.nide-auto.com/universal-and-dc-motor-assembly-line/armature-production-line/full-automatic-armature-production-line.html