On 8/14/2013 6:41 PM, Bob La Londe wrote:

How about drill taps? Too thick?

Sorry. Should have been more clear. DRAP is a Drill-Tap tool.

Wouldn't you need different speed heads so tapping and drilling speed
and feed would match up with their respective holes and operations.

RPM change is not necessary although would greatly enhance the
efficiency. ...For this guy, he has minutes to perform the operation
while other steps are taking place so the RPM change isn't really
critical at all.

As for feed... Yes. However, the beauty of a pneumatically stroked
unit is that so long as the threads need not be extremely high quality
and/or so long as the customer doesn't set the thrust too high and yank
out a thread on the way back, the feed rate can be mostly managed by the
thrust pressure on the tool.

Low pressure causes a light cut when drilling, but it's a sacrifice that
the process requires unless you go to a much more expensive screw or
servo feed option, etc.




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