At 10:53 PM 9/28/2010, you wrote: >Gentlemen, > I am a happy camper. > Jeremy came in my office with a quiet voice to give me a report on how the >Cinci cut the big plate with all the holes with a +-.002 location tolerance. >I thought OH NO we have problems. He then smiled and said it nailed all the >holes. There was one dimension out of tolerance. A hole to hole location of >+-.001 on a distance of between 25 and 26 inches. It was -.0015 or .0005 out >of tolerance. This is in the realm of temperature causing the tolerance >fluctuation. I think maybe the design is a little tight toleranced as quite >a number of the holes are bolt holes. Bolt holes with a +-.002 location >tolerance are a little overdone. Jeremy said he thought this is the only >machine in the shop that could do these parts. What an endorsement of EMC2. >I heard someone say you cannot make a silk purse from a sow's ear but I am >not so sure anymore. > The Enshu is basically done. It is ready to make parts. This afternoon I >was looking at how to get an encoder on the spindle. After removing the >spindle cover and finding it would be a major undertaking to mount and >connect an encoder we started looking at the spindle drive. The spindle >drive is a full servo with feedback from the spindle motor. Instead of >encoder feedback it has resolver feedback. This feeds directly into the >spindle drive. Reading the manual lead us to check a few pins with a scope. >We found encoder A and B pulses on two pins and an index pulse on another >pin. This will allow feedback into EMC and give me control of the spindle as >an axis. I will be able to drive the spindle as an axis with the MPG. >I am not sure exactly how I want to control this. >I will be able to read the index pulse after every gear change to orient the >encoder to the spindle. >Do I want to have a linear scale or a rotary scale? >This has 4000 rpm and I am not sure how many pulses/rev this will have. >Ideas, comments welcome. >I have the video camera ready to record some motion/cutting and tool >changes. > >EMC2 rocks!!!! >thank you very much >Stuart
Stuart, Schweet! I don't know why, but I really like watching that machine go through it's paces. My daughter was a huge Transformers fan when she was a kid, and I guess it just reminds me of one of the friendly ones. And Ms Fox is kinda cute too... Mark ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
