On Friday 10 June 2016 11:06:50 EBo wrote: > On Jun 10 2016 8:57 AM, Gene Heskett wrote: > > On Friday 10 June 2016 10:18:26 Dave Cole wrote: > >> I'm going to try the standard screw comp out next week on a brand > >> new > >> ball screw that must have been made with a hammer, anvil and file. > > > > You paint a picture of a Chinese, working over a BBQ grill and > > anvil, swinging a 4 lb hammer or pushing a worn out chain saw file. > > On the rear > > deck of his Junk so he can push the whole thing overboard if the > > fire gets out of hand. :-) > > Sounds like some machines *I* have custom built in a pinch (... > starting by building a forge from a junked out break drum and a busted > sewer pipe lieing around, that and a hair dryer with a burned out > element, that was until the motor burned out, then grab a cloth sack > to fashion a push-pole bellows... The whole project was done in less > than a half day ...)
Chuckle, sounds like some of the contraptions I have built in the past. Some of them have been worthy of Rube Goldberg. :) Well, this guy is better than the average bear, he has a chain on it so it is restrained and held to about 2 feet underwater. That way he can fish it out after the fire is quenched and get back to work. :) I did manage to get the Little Monster back together this afternoon. Made a different wedge and jackscrew to tension the belt with, quite a bit more rigid, and made sure it was running true spinning both ways. I have replaced 2 of the 4 bearings on the jackshaft as I was hearing a rumble like it was eating bearing cage, so now its running much quieter. The new, 5 cog longer belt, and 10 cog bigger lower pulley seem to fit a lot better, High gear can make 1800 revs, (up about 450 but still slower than the OEM motor w/o the jackshafts 3x geardown) and gear low about 900. And I believe the motor may still have torque enough to peel curly steel strings off at 400 revs & .10mm cut and feed per rev yet at 65mm diameter. Maybe. If I can cut the .05mm deep dish in the face of this piece of cast, I'll turn it around in the chuck and finish what I can't get at due to chuck jaws, putting a .05mm dish in both faces. It will be a toolpost base to replace the compound feed, and while this ones probably as heavy as Andy's new post on the Holdbrook, it will have the same offsets so I can turn it around and keep the tool bit within the carriage footprint. Then add that spindle speed wobbulator we discussed a week ago to help keep the vibration from building up, and it might be useable again, for teeny work. Big work? When I can stand there and see the crossfeed slider and the carriage, bending down on the ends front and back and up 50 thou in the middle when doing an offcenter cleanup, it obviously has limits regardless of the available spindle power. [...] 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
