The Kaiser Piccolo is an exquisitely made mid sized boring head with boring and automatic facing functions. I got a ISO30 one in a very nice condition together with a bunch of tooling. When tested it performed very fine but I couldn’t switch easily between facing and boring (marked as P and A in the head, maybe for the french «planage» and «alésage»). It needs to be serviced to cope with this jam.
In this post I show the result of carrying a sequence of tests to the rebuild Wörner drilling press to check its accuracy. I took an Aciera 10 drilling machine inspection chart as a reference. Both machines are of similar size and Aciera quality is second to none.
One of this summer works have been to finish the cabinet of the the Wörner B13 drilling press. It was mainly a work of covering the steel frame support with MDF. The final desire is to get it prepared to fit the electrical wiring and a set of drawers to organize the tooling of the machine.
This is the post that closes the mechanic works on the Wörner B13. Now remains to do some final testing, some woodworking to take profit of the supporting structure and to mount the electrical controls. These will be the next steps.
There are a couple of pictures of the finished machine:
This is how the drilling machine return spring looks when I opened the cover:
A previous owner did a not very successful repair and modified the internal attachment of the spring. As a result, spring was badly deformed and have a unusual feeling during the descent. I extracted it by pulling it out of the cup and then giving it a quarter turn to free the external end from its attachment (it has a rectangular shape as you will see next).
The drilling press was modified by a previous owner. As it can be seen in the picture below, someone added an intermediate pulley in the driving train to reduce the rotation speeds. What was the motor pulley became the intermediate pulley and a new single step pulley was fitted to the motor shaft. I have some doubts about the origin of this variation: would it be made at the Wörner factory after a specific requirement by a client?