On Tuesday 22 October 2019 22:23:05 Dave Cole wrote: > I'm surprised your not using a pressure pot to spray the coolant. > You could put an electric valve on the output and pulse it on and off. > Harbor Freight has a cheap pressure pot/spray gun setup. Just use the > pot. Sometimes low tech is good. :-) > > Dave
I was at the hf store in Buckhannon a week ago and wandered around looking for something I could use, but the only thing I saw would have used a gallon an hour. Way too much. My target is about a 5 to l0 lb blow, carrying half a cc a minute or less. I figure with this pump, being stroked by the pwmgen, I can turn it maybe 1 or 2 revs a minute. But since the servo period is a millisecond, I can't pulse it at 4kilohertz, as I wrote earlier, but at a minimum of 1 khz. Banging it for a millisec every 50 millisecs ought to be in the usable range. But we'll see. Dry, and hooked to 12 volts, I'd guess it runs about 1.5 rps. That would drain the 8 oz coke bottle in 20 minutes and flood the table making a mess. So its got to slow down, a lot. It apparently has a planetary reduction in it, my guess is at least 10/1. I'd like the mist to be almost self drying. Air consumption will be a problem too as its only a cheep 2 horse, 8 gallon compressor. Direct drive, noisy. Needs an input muffler. I don't figure it can run 50% of the time and survive an hour. I found a motor driver, s/b 2 of then here next Monday, so the suspense will be replaced by making a smaller nozzle for the flex hose. writing a bit of hal code and making it work better than what I've got now... Thanks Dave. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
