Hi Gene You seem to be making a real meal out of a DB9 slot Why not just make the cutout this shape; https://www.aliexpress.com/item/10PCS-Full-Height-serial-port-Bracket-for-DB9-DB15-DB25-interface-Computer-Case-PCI-slot-baffle/32880851198.html
easier to assemble can invert plug later if you wish easier to machine On Mon, 17 Dec 2018 at 00:28, Gene Heskett <ghesk...@shentel.net> wrote: > Greetings all; > > I found I have a 4mm mill, which will give a closer match to the rounded > corner radius of the db pattern. > > In laying out the cuts to do a db25 length pattern, I am mirroring 1/2 > of the max overall length of of the wider top, which is 1.537" including > the tool diameter of 0.157480314961 that needs to be subtracted from > that overall length. So thats [[1.537-0.157480314961]/2] to get a > measurement left and right and of the geometric the center of the > pattern. That move is to be done by adding 1/2 the dsubs > height(0.334"/2=.167)-tool_rad(0.0787401574803) to its current > centerline height for that 1st move. That move will also include the Z > decrement since this panel is plenty thick enough to deflect the tool, > so I am climb cutting (ccw around the inside of the desired pattern, > while digging progressive deeper. > > Then the mechanical pattern from there to the lower left end/side isn't > speced in run length, this shorter run isn't specified except as a 10 > degree angle. With the tool stopping at the mirror of the prior y > height. > > How do I calculate that x offset from the x=0 centerline for the -target > of that end move? which then turns in the + x target for the next move, > and the a move back to the starting point which will then be done at the > mirror of the first 10 degree angle. > > What I want to do is pass 4 vars to the CALL driving the machine to the > center of any hole (11 needed), finish the move to the edge of the hole > by adding all the little offsets used to those 4 values passed as > arguments to the sub that does the work. I broke a 3rd .125 mill and > bent a fixture bolt last night trying to carve it again because I'd > missed a g54 insurance call on a restart. Thats fixed now, but this is > getting old and ex$pensive. > > And I've decided to make 2 of these so I can put the 2nd one on this > mill, along with another 15 volts of stepper motor voltage. That of > course will then lead to the stripping the gear box off it and mounting > the 400 watt spindle motor from the 7x12 (TLM's former spindle motor), > and about a 3x1 spindle speedup, an encoder and a better mister. If the > bigger motor kills the controller I've already souped up with a much > heavier hexfet, shrug. I'll send Jon some more green to make me another > of his. They work VERY nice for spindle control. :) > > > Thanks all for any help with the math. And have a Merry Christmas. > > -- > 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> > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
