Need a Tough Design Solution?

Why not ask a question here, to see if other users might just have that
"one-off" idea that is common in their industry, but has NOT made it
into your field yet.

Like "A non-welded, no connector" metal to metal joint: Hint, look at
the high speed hard milling spindles with shrink fit "collets" directly
onto the cutter.

Maybe there is an answer.

Bo

 

It's funny that you bring this up. About two years ago I was in a
quandary about how to thread a thin walled square steel tubing and get
enough "bite".
I didn't want to have to weld a nut on the inside of the tubing.
So I asked here what I should do and someone mentioned a FlowDrill,
which I had never heard of, but it worked extremely well for our
Prototype and they are now using it in production.
Ask and Ye shall receive.

Just a quick anecdote,
Muggs

 

And what is a FlowDrill?

It reminded me of something I learned 30 years ago on tapping tought
steel.

A guy I worked for got a job to tap 4140 half hard steel pieces (or
similar), and everyone else bid to lose a tap every 5-6 pieces or so.

My boss looked at the specs and did a quick induction heating coil, and
zapped the pieces for just 10-15 seconds as I recall, and then tapped
them hot and they tapped like going through aluminum.

He made high profits off that job.

Bo

 

Hey Bo,
Check it out here: http://www.flowdrill.com/english/introduction.htm

Watch the short videos, they'll do a better job of explaining then I could.

Muggs

 

Very clever, and a clean solution.

Bo

 

The latest electronic edition from www/pddnet.com reminded me that I
don't follow power transmission enough to know of recent improvements
in techniques and efficiencies.

The eddy current variable speed drive from MagnaDrive Corp is a perfect
example for a non-geared, non-powered piece of equipment that offers
significant advantage in some variable speed drive applications.

After reading that note on an eddy current drive, I quickly wondered
whether a form of permanent magnet eddy current drive could make a
variable speed drive for a bicycle, and eliminate 2 derailers, 2 sets
of gears, one cable and finger/hand shifter, mounting points-hardware,
plus less length of chain.

I have no clue about how efficient an eddy current drive could be, but
for a consumer drive on bicycles, I would want to have reliability and
minimal fixing and repairing. Interesting to think about at least,
though I have no idea whether such a drive would be cost and energy
efficient from just first thoughts.

Bo