This is a drilling machine to drill the holes on the door closer. There are 4 stations. Manual loading the undrilled door closer in the fixture of station 1. Look the part within the fixture first. Then station 2 and station 3 will drill the holes (#2 for 1 hole and #3 for 6 holes) on the part to create room space. These room space are for the oil existing. When the door closer is turned, the oil inside the door closer will be compressed into the room space. The compressed oil will push the door closer back to the original position. This is why the door closer needs the hole space. Station 4 will do the chamfering work on the drilled holes. When the drilled part is rotated back to the station 1, Manual unloading the finished part and loading the new undrilled part are required.