a locking ring for the back of a watch
a locking ring for the back of a watch
(OP)
Does anyone know where I can buy a locking ring similar to the one shown at ~1:20 in this video...http://youtu.be/M_dq-Ak-Suw?t=1m22s?
Alternatively, how would you guess this is manufactured? Forged then machined?
Alternatively, how would you guess this is manufactured? Forged then machined?
Chris Loughnane - Product Design
http://www.pdnotebook.com
http://www.twitter.com/_chrisloughnane





RE: a locking ring for the back of a watch
Start with faced round bar.
Turn OD
Bore ID
Thread ID
Cut Grooves
Part off or use Slitting Saw
I don't know why this would be preferable to threading the back with grooves as one piece like many watchmakers do.
RE: a locking ring for the back of a watch
Timelord
RE: a locking ring for the back of a watch
Because the threads are super-fine, it would be best to cut them in the same setup with the facing operation, then bore an ID, mill the wrenching notches, and then cut off the part.
The watch mfgr probably does it all in one setup in one CNC turn/mill bar machine.
Mike Halloran
Pembroke Pines, FL, USA
RE: a locking ring for the back of a watch
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)