On Thu, 13 Mar 2008 09:18:50 -0700, Gunner
wrote:

On Thu, 13 Mar 2008 15:03:54 GMT, "Joe AutoDrill"
wrote:

Customer has small parts to perform multiple functions on. Probably a total
of three steps. Load, drill, tap, unload. Okay... Four steps. G

Any suggestions out there on brand, etc? Parts are less than 6" cube size
and light weight.

Camco Unipak indexer. A number of them are on Ebay right now. Get the
indexer control and the matching rotary table. they will index in 4
90' positions if required. Sticking a pneumatic collet closer on the
rotary table will make things go faster when loading/unloading.
For neatness sake, run everything off a cheap PLC with some Hall
Effect Switches, or even microswitchs.

http://cgi.ebay.com/CAMCO-CYCLING-DC-MOTOR-CONTROL-92A61633010000_W0QQitemZ120232414533QQihZ002QQcate goryZ71395QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://cgi.ebay.com/Camco-rotary-index-table-601RDM12H24-270-20-1-ratio_W0QQitemZ120231822320QQihZ002QQcategoryZ2622 7QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

If you buy a used unit, just make sure you get an indexer with the
number of stops you require. The one above makes 12 stops, in other
words, it increments 30 degrees at a time. The RDMs are a good choice
if your fixtures are going on a dial plate.

There are also several mfrs of pneumatic indexing tables, but Festo is
the only name I can recall right now. Thomas Register should turn up a
few others. Not as smooth and sexy as a cam indexer, but cheaper, and
usually adequate for low speed manual operations with low inertia
loads.

http://www.festo.com/Automation/Innovations2007/136.htm

--
Ned Simmons