RE: [CAD_CAM_EDM_DRO] Re: DIACRO BENDER QUESTION

Here's an idea to add motion control to a pipe bender... Attach some
sort of geared system. The fulcrum principal comes to mind... in theory
(weightless, frictionless system) get any sized stepper motor coupled
with an appropriate length lever, you could bend the tube...

See my "automated pipe bender example.jpg" in the following
http://photos.groups.yahoo.com/group/cad_cam_edm_dro/vwp?.dir=/Lloyd%27s
+Linear+Slider+System&.src=gr&.dnm=Automated+Pipe+Bender+Example.jpg&.vi
ew=t&.done=http%3a//photos.groups.yahoo.com/group/cad_cam_edm_dro/lst%3f
%26.dir=/Lloyd%2527s%2bLinear%2bSlider%2bSystem%26.src=gr%26.view=t
(not sure if that will work)

Manually goto: groups -> CCED -> photos -> Lloyd's Linear Slider System
-> "Automated Pipe Bender example.jpg"

Just an idea to toss up in the air... (It's a boring Saturday afternoon
for me... and too much time on my hands)

Reds the pipe,
Magenta is a stopper block (something to hold an end of the pipe in
place)
Blue is the lever that's bending the pipe
White inner circle is the bend template (or whatever it's called)

Who ever spends the time looking at it, will understand where I'm going
with this...


--
Lloyd Leung




-----Original Message-----
From: doug98105 [mailto:dougrasmussen@...]
Sent: March 9, 2002 2:00 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: DIACRO BENDER QUESTION

Stan,

I'm pretty sure everything is the same except the #4 has the
mechanical advantage of the ratchet action.

To get this on topic.....I've thought about wrapping a chain around
the base of my #3 so it's like a #4. Then adding a motorized drive
in place of the ratchet mechanism with the degree of rotation and
work clamping under computer control. The intention is to come up
with an automated bender.

So far I haven't come up with an easy solution to the torque
requirements of the drive motor, other than using an hydraulic
motor.

Doug

--- In CAD_CAM_EDM_DRO@y..., stan mcdonald <SMCDONAL@K...> wrote:
> Can someone here tell me if a #4 Diacro Bender is larger in DIA
then a
> #3 or are they the same size? I am looking to find out if the dia
of the
> round part is bigger?
> The mad RAD is the same and so is the leverage so other then the
ratchet
> whats the difference between a 3 and a 4?
>
> Thanks
> Stan


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