So - I kinda cheated. I set up the comp so that I could run a gcode program and scan the 'radius' of the shape into an array.. SO it looks like
-move to the center of the shape - comp captures center. -move to the profile of the shape - set the comp to scan mode -run the gcode and the comp stores the scanned shape into an array. Have not actually cut anything... yet below - right is the gcode shape - left is the spindle synced motion with and without tool offset. (not that you would be boring that shape - but it is easier to visualize on the mill. http://electronicsam.com/images/greenmachine/Screenshot_2020-10-11_19-42-05.png This one was just for fun-zies... http://electronicsam.com/images/greenmachine/Screenshot_2020-10-12_18-24-22.png On Thu, Sep 17, 2020 at 11:24 AM Sam Sokolik <samco...@gmail.com> wrote: > With a properly sharpened tool - and a bit more hp - you could plunge a > cutter to make the shape.. (like a circular shaper..) > > I did it on the emco but the quality wasn't as nice.. (partly the > rigidity and partly the cutter grind) so - that is way faster... > > http://electronicsam.com/images/greenmachine/IMG_20200915_174431.jpg > > http://electronicsam.com/images/greenmachine/IMG_20200915_182303.jpg > > sam > > > > On Thu, Sep 17, 2020 at 11:19 AM John Dammeyer <jo...@autoartisans.com> > wrote: > >> As always both videos are very impressive. Although I think Andy Pugh >> would just move his lathe chuck onto his Harmonic Drive 4th axis and make >> the square in far less than 7 minutes. >> >> Maybe a competition? On your marks. Get set. Go! >> >> Very cool Sam! One day maybe I'll be able to do it too. >> Thanks for posting those. >> John Dammeyer >> >> >> > -----Original Message----- >> > From: Sam Sokolik [mailto:samco...@gmail.com] >> > Sent: September-17-20 6:56 AM >> > To: Enhanced Machine Controller (EMC) >> > Subject: Re: [Emc-users] Non-circular boring. Linuxcnc style. >> > >> > Thought I would test a square - adding a radius to the corner certainly >> > helped the path following. (I think this was .030") >> > >> > https://youtu.be/Q9zhi8Mc1fE >> > >> > >> > On Mon, May 4, 2020 at 3:03 AM Gene Heskett <ghesk...@shentel.net> >> wrote: >> > >> > > On Sunday 03 May 2020 14:34:24 Sam Sokolik wrote: >> > > >> > > > https://youtu.be/PtD9w6lp8n8 >> > > >> > > Sam, dammit, you are having too much fun while the rest of us are >> more or >> > > less locked up. >> > > >> > > But it shows others what LinuxCNC CAN do, so I love it. That said, in >> low >> > > gear, my spincle encoder scale is a bit over 14,000, so I ought to be >> > > able to do some of that too. If I can con it into going that slow. >> Since >> > > I have 2x the nameplate FLA to hit that motor with, I don't see why >> not. >> > > 1st step is 100 rpm in high gear, and its still turning ar 15% on the >> > > slider, I'll bet it can do it in low gear. Gotta get me a boring head >> > > athough I see you aren't always useing one. Gotta put a range switch >> on >> > > the tach, its sorta difficult to see 10 rpm on a 3000 scale. I wonder >> > > just how far I can push PGain at that sort of speed, its plumb stable >> > > and silent at 20 right now and just a bit shaky at 40. I have said >> for a >> > > long time that there isn't anything that LinuxCNC cannot do and things >> > > like this continue to prove it. >> > > >> > > I hope all those guys using Mach on youtube are dying of jealousy. My >> > > grin us hurting my ears. :) >> > > > >> > > > On Wed, Apr 29, 2020, 6:43 AM Stuart Stevenson <stus...@gmail.com> >> > > wrote: >> > > > > Sam, >> > > > > I heard you say your circle is a polygon of a thousand sides. >> > > > > >> > > > > In APT4 a circle of 2500 inches radius is calculated as a straight >> > > > > line. That allows an algorithm for part profiles to be described >> as >> > > > > all radiuses and the variable values determine the lines and >> > > > > circles. >> > > > > Just another possibly interesting random detail out of the wet >> > > > > ram(thanks Gene) brought out by a random comment. >> > > > > >> > > > > Love your videos. >> > > > > >> > > > > Stuart >> > > >> > > All it takes is for somebody to ask 'what if?'. I do it >> occasionally, so >> > > have you, but Sam seems like he does it a lot. And all of us benefit >> > > from this lists ability to answer the questions generated by our >> wildest >> > > dreams. >> > > >> > > Thank you all. >> > > >> > > > > On Tue, Apr 28, 2020 at 9:57 PM Sam Sokolik <samco...@gmail.com> >> > > wrote: >> > > > > > just to see if it would... >> > > > > > >> > > > > > https://youtu.be/a7CO9gohaXE >> > > > > > >> > > > > > On Sun, Apr 26, 2020 at 2:54 PM Sam Sokolik <samco...@gmail.com >> > >> > > wrote: >> > > > > > > the new encoder seems to work good :) >> > > > > > > >> > > > > > > >> > > > > > > >> > > > > > > On Tue, Apr 21, 2020 at 9:53 PM Jon Elson >> > > > > > > <el...@pico-systems.com> >> > > > > > >> > > > > > wrote: >> > > > > > >> On 04/21/2020 09:11 PM, Sam Sokolik wrote: >> > > > > > >> > Just the way the path was generated... Didn't try that >> hard. >> > > > > > >> > Acad >> > > > > >> > > > > -> >> > > > > >> > > > > > >> ace >> > > > > > >> >> > > > > > >> > converter for simple stuff like this. (Or by hand) >> > > > > > >> >> > > > > > >> I have a bunch of little C programs that write most of my >> > > > > > >> G-code. Making round bores and rectangular pockets, and >> > > > > > >> trepanning both of those shapes in sheet materials. All of >> > > > > > >> them do it by climb mill. >> > > > > > >> Even when I did some things in bobcad, I set it up for climb >> > > > > > >> mill. >> > > > > > >> >> > > > > > >> Try it sometime, you'll be surprised how much better it >> > > > > > >> works - ESPECIALLY in aluminum. Just program it to go >> > > > > > >> counterclockwise around any internal pocket. >> > > > > > >> >> > > > > > >> Jon >> > > > > > >> >> > > > > > >> >> > > > > > >> _______________________________________________ >> > > > > > >> 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 >> > > > > >> > > > > -- >> > > > > Addressee is the intended audience. >> > > > > If you are not the addressee then my consent is not given for you >> to >> > > > > read this email furthermore it is my wish you would close this >> > > > > without saving or reading, and cease and desist from saving or >> > > > > opening my private correspondence. >> > > > > Thank you for honoring my wish. >> > > > > >> > > > > _______________________________________________ >> > > > > 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 >> > > >> > > >> > > 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) >> > > If we desire respect for the law, we must first make the law >> respectable. >> > > - Louis D. Brandeis >> > > 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 >> >> >> >> _______________________________________________ >> 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
