Your having way too much fun Gene.
On 8/13/2013 9:50 AM, Gene Heskett wrote: > 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 ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
