steppers or servos

[cncfoam]

I am contimplating on building a cnc wire bender. using the gecko products.
I am leaning toward servos for the fact that it will keep position.
You really wouldnt know if the stepper skipped a step.

Are there any other arguments for/or against using servo vs stepper.

I would have to gear it down, most motions will be under 360 degree angular movement. (final movement.)
Im looking for strength, torque. speed is not a priority.

thanks ahead of time.
Eric

[SirSmash]

If you can afford it (or you are going to build your own) I'd go with servo. Steppers are nice and relatively cheap but not knowing if it skips a step can get very annoying. Granted if the machine moves smoothly it really shouldn't be skipping steps.

http://torchmate.com/resource_center...s_-_the_facts/ they seem to have a good comparison.

[ger21]

See questions 3 and 4 in the post above this one.
http://www.cnczone.com/forums/showthread.php?t=52090

[kdoney]

cncfoam<--keep me informed. I'm just starting to make a 3d bender myself. I am going to use overpowered steppers first.

[cncfoam]

Where are you at on your project.
I am just researching the power requirements

as I stated, I have a hand bender bending .1875" wire,
takes 14lbs of force on a 10" handle.

trying to convert that to torque.

What are you thinking for steppers? Power?

EZ

[WayneHill]

Well, drawing from my experience with steppers, they really pissed me off one day as I was working on a critical part and they skipped steps. I just about took a hammer to the stepper drives.

Use servos. Period.

Originally Posted by kdoney cncfoam<--keep me informed. I'm just starting to make a 3d bender myself. I am going to use overpowered steppers first.

[xclr82xtc]

servos would be nice...

the problem is i cant get any freakin info on how to make them work!!! there is just WAY to much on google, alot of it unrelated...

im about to the point now where i want to write seimens a $20,000 dollar check and be done with it.

[WayneHill]

DC servos. G320
They are easy to setup.

www.geckodrive.com

[cncfoam]

I was going to use the gecko 320x. supposedly bullet proof.

I have built other cnc machines. and still have my 10 foot cnc
foam cutter.
http://www.cnczone.com/forums/showthread.php?t=16818
this is the cnc router I built a while back. this was fun.

I agree as far as understanding what to buy.
I dont know alot about other equipment but the gecko products
seem to be the best.
I am having the same problem trying to find a suitable servo.

Anybody have a good source for servos for use with gecko 320x
EZ