Re: [CAD_CAM_EDM_DRO] Robotic Arm

Mark Vaughan wrote:

> It's strange really that there are so many of us all been playing with mills
> over the past few months, about to start PnP and reflow soldering.
> I was trying to remember the manufacturers name of my oven earlier and
> couldn't, it is a MADELL.
> The conveyer is just a link chain job formed out of 2mm stainless wire. You
> could make a jig up to fold links and assemble to do your own.

I don't think I could use this type, as there are components on
both sides. I'd expect the links to bump components on the
bottom side.
The whole

> thing is about 18 inch wide, and the links are probably about 2.5 inch wide,
> and half an inch apart. The belt travels on rollers and each end, basically
> a metal rod with several bosses on it, smooth ones in the middle and
> notched, cog like ones at the side to tractor the belt along. A simple
> variable speed motor drives it.
> The heat elements are big bar heaters that generate a lot of heat, but do
> not glow. About 6KW in all. I have thought about building one and using
> fusion heater tubes from photocopiers, a photocopier also has a nice big
> servo or stepper that drives the paper path that would be ideal for the
> traction belt. The elements are mounted in three boxes that sit above the
> PCB, each one being a heat zone, with temperature probes about an inch below
> them that feed into 3 PID temperature controllers, each driving PWM into
> solid state relays to drive the heaters. The inside of the boxes is all
> painted with a thick hi temperature paint, and the outside insulated with
> something like rockwool, tin foil, and then another rockwool and tin foil
> lined box over the top of that again with fan blown air circulated between
> it and the heater boxes, and out to a vent tube. Finally to standard fans
> blow over the PCB as it exits.
> It's so simple, and they sell for so much money over here, I might even look
> at making some.

Yup, that's basically what I've been able to figure out from
looking at various pictures on the web.

Thanks,

Jon