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Revolving drill head - photos and video
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Search for info about a Burgmaster - they were a real operations speed up in the days before CNC.
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Quote:
Originally Posted by
Crusty
Search for info about a Burgmaster - they were a real operations speed up in the days before CNC.
Interesting, good call! Here we go:
https://s3-us-west-1.amazonaws.com/h...ster_drill.jpg
1:56 video:
https://www.youtube.com/watch?v=jsZ628Vixig
7:30 video:
https://www.youtube.com/watch?v=J4FEmIIi_90
VintageMachinery.org has a good page with Burgmaster documents here: Burgmaster Corp. - Publication Reprints | VintageMachinery.org
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2 Attachment(s)
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.
Attachment 30249
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.
Attachment 30295
The also non-rotating Stark tumble tailstocks have a similar look to the Cuno drill, though. Stark Lathes Page 2
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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.