Re: [CAD_CAM_EDM_DRO] Re: Running a BOSS on single phase

I was getting 60IPM from mine but I was always plagued with occasional
lost steps, even if I reduced the speed and acceleration. In the end I
came to the conclusion the lost steps problem was more a Mach2 issue
than the motors/drives. Because there is so much inertia, the pulse
train needs to be extremely smooth. Mach2's pulse train can be a little
rough at times.

Once I bit the bullet and changed to servos all my problems went away
and I now get up to 200IPM if I want it. Normally I have it throttled
back to around 100IPM.

To be honest 60IPM is easily fast enough unless you are doing a lot of
production work where every second counts.

Les


Polaraligned wrote:

>It is really tempting to keep and use the steppers that are already
>set up. I just can't get a straight up answer from the archives
>as to how well it may perform. A bunch of people were only able
>to get 60 or maybe 80 ipm rapids before reliability went down the
>toilet. I wonder how well a modern NEMA 42 stepper would work
>in comparison to the original 25+ year old steppers. The technology
>put into them must have changed sifnificantly since then. If I buy
>stepper drivers
>to use with the factory motors, then I am comitted to steppers.
>What does a modern NEMA 42 go for these days? and are they better
>than the original ones? These are questions I need to figure out
>before comitting to steppers.
>
> Maybe servos are the safest bet. Many frown on them because they
>think they cost more, but there are servos available on e-bay that are
>pretty inexpensive ($250 or less per axis with encoders)
>
>
>Scott
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