Revolving drill head - photos and video

[Jon]

Revolving drill head.






1:00 video:

More: https://www.romai.de/en/machine-comp...ver-drill-head

[Crusty]

Search for info about a Burgmaster - they were a real operations speed up in the days before CNC.

[Jon]

Search for info about a Burgmaster - they were a real operations speed up in the days before CNC.

Interesting, good call! Here we go:



1:56 video:

7:30 video:

VintageMachinery.org has a good page with Burgmaster documents here: Burgmaster Corp. - Publication Reprints | VintageMachinery.org

[threesixesinarow]

Similar system from the 1920s by Charles Cuno of Meriden, CT, that I noticed looking for something else. I think I saw pictures of small lathes with revolving drilling tailstocks like this, too.



https://books.google.com/books?id=Mr...page&q&f=false

Edit: I guess I misunderstood what the pulley was for on this Sloan & Chace tailstock - though run by the overhead belt drive it just advances the turret to the next station.



The also non-rotating Stark tumble tailstocks have a similar look to the Cuno drill, though. Stark Lathes Page 2

[tonyfoale]

Yes please.

[Toolmaker51]

Those little Burgies, I think they are model #00 had a two groove sheave. 9000 rpm for a .011 drill is far better than 3600 in a Bridgeport. A carefully organized process, in a proper fixture can still give CNC's a good race.
1st off nothing moves 18 inches for a tool change. Like process streamlining mentioned, with a rail, the operator's positioning in concert with indexing turret.
Time was, such workers enjoyed intense production work. I enjoyed designing tooling they could do that with.