Cal,
Okay, now I unnerstan'! Sometimes I just need a little
prodding to get that figgered out. I'll give that a whirl tonight! Thanks!
mark
At 11:10 AM 3/25/2010, you wrote:
>Mark
>
>With a dial travel indicators set against some part of the moving member,
>the motion over any distance can be confirmed
>
>O--|--O is the same as O--........................|--O where the
>dots are "empty distance". and O-- is an indicator.
>
>In example, move the "work head" to the left stop, back off the stop
>enough to place a travel indicator in place with about .200 compression.
>Mirror the set up on the Right side.
>
>Then command moves to and from these original positions.
>
>The travel indicators can be placed at any location along the table if
>"mapping" is desired.
>Move 0 O--|...............................................--O
>Move +42 O--............................................|--O
>Move 0 O--|................................................--O (Check the
>dial indicator reading, did it repeat the original position?)
>Move +21 (half way down the table) O--..............|................--O
>Reset Indicator 2 O--...................|--O
>Move 0 O--|...................--O
>Move +21 O--.................|--O (did the move repeat as shown by
>the indicator?)
>
>Repeat ad nauseum
>
>I have done such on a drilling machine (position only) when the operator
>complained that "this machine just won't move as commanded".
>
>Hope it helps
>
>Cal
>----- Original Message -----
>From: "Mark Wendt (Contractor)" <[email protected]>
>To: "Enhanced Machine Controller (EMC)" <[email protected]>
>Sent: Thursday, March 25, 2010 10:36
>Subject: Re: [Emc-users] Jogging inaccuracies
>
>
> > Cal,
> >
> > 'Splain that one to me. I'm having trouble getting my mind
> > around that setup and how it will determine the accuracy of the run
> > down the x axis. I've never seen it done so I'm not sure how I'd set that
> > up.
> >
> > Mark
> >
> > At 10:25 AM 3/25/2010, you wrote:
> >>Put a lesser indicator at each end of the span.
> >>
> >>The distance between is moot.
> >>
> >>
> >>----- Original Message -----
> >>From: "Mark Wendt (Contractor)" <[email protected]>
> >>To: "Enhanced Machine Controller (EMC)" <[email protected]>
> >>Sent: Thursday, March 25, 2010 10:20
> >>Subject: Re: [Emc-users] Jogging inaccuracies
> >>
> >>
> >> > At 10:10 AM 3/25/2010, you wrote:
> >> >>You also need to take into account the form accuracy of the rack and
> >> >>its gear, this will give a cyclic error at tooth rate.
> >> >>
> >> >>The stepper will not give accurate amounts with microsteps, again its
> >> >>a cyclic error between steps specially if the torque as a percentage
> >> >>of what the stepper can do.
> >> >>
> >> >>Dave Caroline
> >> >
> >> > Sure wish I knew somebody with a 52" dial indicator... ;-) That's
> >> > the length of the run in the x axis. Be nice to see if this kinda
> >> > all averages out over the length of the run.
> >> >
> >> > Mark
> >> >
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > Download Intel® Parallel Studio Eval
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> >> >
> >>
> >>
> >>------------------------------------------------------------------
> ------------
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> >
> >
> >
> ------------------------------------------------------------------------------
> > Download Intel® Parallel Studio Eval
> > Try the new software tools for yourself. Speed compiling, find bugs
> > proactively, and fine-tune applications for parallel performance.
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> > http://p.sf.net/sfu/intel-sw-dev
> > _______________________________________________
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>
>------------------------------------------------------------------------------
>Download Intel® Parallel Studio Eval
>Try the new software tools for yourself. Speed compiling, find bugs
>proactively, and fine-tune applications for parallel performance.
>See why Intel Parallel Studio got high marks during beta.
>http://p.sf.net/sfu/intel-sw-dev
>_______________________________________________
>Emc-users mailing list
>[email protected]
>https://lists.sourceforge.net/lists/listinfo/emc-users
------------------------------------------------------------------------------
Download Intel® Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
_______________________________________________
Emc-users mailing list
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