On Friday 25 May 2018 08:41:42 TERRY Christophersen wrote: > Table toward you and to the left is machine home. > 4th axis on the right hand side of the table. > This is how most machines are. > Which direction/angle is the motor sticking out? Any direct drive to the drive worm is an un-handy direction, so in order to clear stuff, my little table has to be on the left, so the drive motor projects at a 45 degree angle up and to the front. Its a piece of India made 4" junk. Handy for facing bolt head flats, or for drilling and tapping for the grub screws for these tap hats I am making 2 or 3 a day, but useless for cutting sprockets or gears. Backlash is measured in degrees, and varies because the bull gear is off center.
I needed a special drill while installing the safety railing for the wheelchair ramp, so I made a 3 fluter I had to re-sharpen several times with it, but since the cutting forces were into it axially, I had to put the air hose rigged to pressurize the internals, exerting a lifting force to the table so a 270 oz/in nema 23 could turn it to do the spiral. If I could find a 5" that was really precise, and whose worm shaft was horizontal and high enough to leave room for the motor to clear the table, I likely would have laid the card on the counter years ago. Those 5" all angle tilting head things look good, until I ask myself can the motor turn it under cutting loads, You can using the indexing plates, lock it in any position, but can they move while a 1/4" round nose is carving the workpiece? My mental SWAG says no. So an almost too big for a G0704 6" table, with the motor on a swing mount so it can belt drive the worm with a 3/1 multiplier, while the motor mount can be turned to place a nema 34 to its left, bottom side when mounted vertical, or rotated so its beside the table when mounted face up. But thats going to be 40+ lbs for this old fart to handle, I've not ever seen one so rigged, but I can sure "make it so." That is what we do here I think. I've got to, this one is an excedrin headache, and a fairly low numbered one at that. So who makes the best 6" for raw material? Preferably NOT made in India. [...] -- 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
