On Tuesday 13 August 2013 10:15:50 John Thornton did opine: > I know most of you guys on the mailing list don't visit the forum so > here is a link to a G code generator for drilling and tapping holes on a > mill. I wrote this mainly because we don't have a tapping cycle and if I > forgot the pre-position move then you get a really neat show as your tap > traverses from where it is to the bottom of the hole. Anyone ever seen a > tapped slot? > > This saves me time when I need to tap some holes in a part and helps > prevent errors. > > http://linuxcnc.org/index.php/english/forum/31-cad-cam/26859-mill-tappin > g-g-code-generator > > JT > Thank you John for continuing to expand this idea. It's beginning to look as if I need to either get a bigger mill, or so serious work on this one to see if I can incorporate rigid tapping encoders, in a spindle with enough power to turn the tap.
Has anyone ever attempted to put a treadmill motor on an X1? :) FWIW, I did improve the Z drive I'd made a bit here about 2 weeks ago. I had come across some fairly hard, 1/2" x 5" 7076 alu stock that I had used for the jackshaft mount in my lathe & had lots of that left, so I sawed off a 7" piece, ripped it down the middle, the made a cutaway to clear the gib & lock screws on the left side of the head casting, drilled & tapped an 8mm hole near the corner on each end and installed 2 of the leftover ball bearings I removed from my bandsaw when I converted it to koolblocks & carbide backing shoes, then drilled & tapped 4 more 8mm holes in the sides of the casting and bolted these on so the bearings ride the post & maintain its supposedly 90 degree stickout angle. That seems to have alleviated most of the stictions cause by the off the axis location of the drive screw, tending to want to tip the sled up & down (its way contact length is way too short to work well). Now I get the impression I need to move the counterweighting springs anchor point to the rear. And maybe buy some ball screws. :) Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> Good night to spend with family, but avoid arguments with your mate's new lover. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
