Re: [CAD_CAM_EDM_DRO] Re: supertech

If you want performance you need to go to commercial drives and motors.
Then you should also have a high performance CNC like the MachineMate CNC
which is a reasonable price CNC but major performance. Any questions let me
know.

Harko

On 8/21/07, Mark Vaughan <mark@...> wrote:
>
> I was talking to one of our regulars at a machining exhibition a few
> days
> ago. It seems this problem loosing steps is common on several other small
> CNC stepper driven machines unless unrealistic feed rates are used. The
> manufacturer of his machines is using a closed loop control board to
> eradicate such problems which has allowed slightly higher feeds (still
> quite
> slow in my books), rather tan using bigger steppers.
>
> The feeling I got was that you may not be alone, and there may be many
> many
> people suffering the same problem, but ashamed to say so on the groups
> thinking it is their personal machine build problem, or lacking the
> essentials to have even proved their machine so totally unaware of the
> problems.
>
> It would be nice to have an idea how many others have this problem.
> Someone
> has stated you should be sending a solicitor's letter to Super-Tech, but
> if
> theirs is similar to everyone else's, then there's fits what one should
> expect, even if it is poor.
>
> The closed loop PCB may be available to use on other machines, I'll ask my
> colleague off group (If I remain part of this group). There is also
> Mariss's
> new stepper control development that would sort the problem.
>
> I have been building a large CNC mill for the past year with various
> development problems. When I started the project I was of the opinion that
> my mill is a fairly standard size, with common 4.5nm servos and should not
> be any problem. Over the year I have discovered there are many servo card
> manufacturers that in reality have technology close to the stone age,
> making
> claims they cannot possibly deliver and nieve in a field they claim to be
> experts. We find ourselves here mixed with cheap DIY quality kit, and
> professional quality kit, all being sold in the DIY field with very wildly
> mixed results, it is very difficult to tell which is which. I except you
> have spent a lot of money and expect it to work, bear in mind I have spent
> thousands of pounds and countless hours on several sets of useless servo
> cards, I now have a commercial set which cost twice the price of the DIY
> ones, as far as performance goes there is no comparison, the DIY stuff was
> near scrap from day one. It seems in this game there is a big cash spiral
> which it is very difficult not to find yourself climbing on.
>
> Regs Mark
>
> Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
>
> Managing Director
>
> Vaughan Industries Ltd, reg in UK no 2561068
>
> Water Care Technology Ltd, reg in UK no 4129351
>
> Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> Phone/Fax 44 1872 561288
>
> RSGB DRM111(Cornwall)
>
> _____
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com<CAD_CAM_EDM_DRO%40yahoogroups.com>]
> On Behalf Of Lurch
> Sent: 20 August 2007 22:04
> To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>
> Subject: [CAD_CAM_EDM_DRO] Re: supertech
>
> As far as I can tell the driver board and it's firmware are
> proprietary. I do know when I bought mine Supertech was still having
> major issues with stepper drivers burning up...my controller was
> replaced under warranty in the first few months and repaired some
> time after that...my feeling is if I pay $3000 for a complete turnkey
> system, I should NOT have to dump MORE money into just getting it to
> work.
>
> So far Super-Tech has refused to answer the latest round of emails on
> the topic...last time I spoke to them about a month ago they were
> quite willing to sell me a servo conversion...when all I wanted was
> what I paid for and never got in the first place...a working system.
>
> It is interesting to note the same dxf files can be imported into
> Mastercam and run flawlessly in a matter of seconds...since the
> customers I still have, I job their orders out to a competitor who
> runs MasterCAM I've seen this personally...I lost so many customers
> from late deliveries and so much money from scrapped workpieces I had
> to take a day job driving a delivery truck just to keep the bills
> paid...
>
> lurch
>
> --- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
> DRO@yahoogroups.com <DRO%40yahoogroups.com>, R Rogers <rogersmach@...>
> wrote:
> >
> > Not familiar with Supertech.
> >
> > What are the electronics? Are they generic like Geckos and a
> standard parallel port interface? If so, I'd try Mach3 for control
> software.
> >
> > Ron
> >
> > Lurch <lurch9@...> wrote:
> > has ANYONE on this list ever gotten the supertech stepper
> motor setup
> > to complete a workpiece without dropping steps or otherwise going
> goofy
> > and trashing the workpiece?
> >
> > I've had a supertech stepper motor mill for almost 4 years...and to
> > date I still have yet to get my reject rate below 80%. Seems like
> > almost every workpiece it will drop a step or two, and there is a
> > randomness to which axis or at what point. I've readjusted
> everything
> > on the mill for silky-smooth action, and even run it with the nuts
> and
> > gibs set loose. Doesn't seem to make a difference. The controller
> box
> > has been replaced once already.
> >
> > I would dearly love to know what setups others are using...maxnc,
> > microproto, imsrv, and what results they have had.
> >
> > Thank you.
> > Lurch
> >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
> [Non-text portions of this message have been removed]
>
>
>


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