Re: [CAD_CAM_EDM_DRO] Wow this is a very slow group now it is

Hi John:
     Your IDEA of having the scales and the encoder of the same or multipale units of division I think may work.  In the past the idea of one system matching or checking the other gave problems of the drive unit hunting to find the right position.  Good luck.  The CNC workshop will be in Ann Arbor, Michigan.  Check out the Digital Machinist site for information as they are running the show.
                                                                                 GOD'S BLESSINGS
                                                                                           Bill

On Thu, 13 May 2010 19:08:14 -0000, John wrote

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> Years ago when I was first here we would get 200 or emails a day on stuff going on in the Home CNC stuff. I come back and we are lucky to get 1 email in 2 days Oh well. Is there not some get together coming up soon on CNC stuff I thought it may be in Michigan some where. if so when and where I would like to go.
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> Up Date:::: I have decided not to get the steppers right now ,Why years ago I was able to get 9 complete servo drives and motors , Jon Elson was able to look at them to see if they would work ,he said yes but the cost of it at the time was a bit much ,Why you ask because at the time the Canadian Dollar was only worth 0.55cents USD so other things came first .Yesterday I took them out of the box and started to look at them 180oz continuous and 584oz peak .Call up Yaskawa and found out that the drives with them are a stepper type servo drive and will take a signal right from a printer port and also from EMC program all they said I should do is hook them up thought a breakout board. So lets see I have a bunch of drivers and motors that work and by the looks of things I just need a board to make them work so that's what I am to do .
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> I will using the encoders that are on the motors but I was thinking of adding glass scales in to the system to give a better feed back on where the tool is at all times I have a bunch here but they are a larger scale I was on Amazon and found a few scales from China that are.0001 and thinking I would get them.
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> I believe that EMC will be able to get the information from them. But depending on how far the encoders are reading on the motors I do not know if they are .00005 or less I am thinking that if the two are not the same in reading they may not work.
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> I will have to read up on this on the EMC manual.
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> Now Dan do you still sell that RPM board that will hook up to EMC if so how do I order them let me know off group.I am going to hook up the DC motor I have for the lathe and mill so I want to able to control it from EMC as I am at it.
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> Now as for timing belts and gears I can not remember what we should use for size I was thinking I would use a 1 to 4 ratio so if the motor has a 1.5 "OD the one on the ball screw will be 6" is this about right or am I way off on this thinking..
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> Yes I know I am blabbering on but what other way is there to brain storm. and get other people's input on the thing
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> John Brauweiler
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