I prefer IJK over R because if there is a mistake in the code the control will normally error out with IJK, but if there is a mistake with the R you will often get a huge unexpected move, often crashing the tool and or ruining the part.
Todd Zuercher P. Graham Dunn Inc. 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 -----Original Message----- From: dave engvall <[email protected]> Sent: Monday, February 07, 2022 8:53 PM To: [email protected] Subject: Re: [Emc-users] Trouble with arc error [EXTERNAL EMAIL] Be sure links are safe. Hi, I've read the assertion many times that ijk is better than radius and always assumed it to be correct; but by how much. Few of us run machines and are 'new' tigjht ;-) Maybe I've not looked in the right place(s) for an analysis or for demonstrated interp of circles with some kind of error band. Any proof and or experimental evidence? Just poking the bear. ;-). Dave On 2/7/22 1:01 PM, andrew beck wrote: > One option is set your post processor to post radius not ikj values. > > > That helped me once. > > They are much more forgiving > > On Tue, 8 Feb 2022, 09:48 Stuart Stevenson, <[email protected]> wrote: > >> Something is fishy between the Y values. >> You have Y4.xxxx in the first list and Y0.xxxx in the full listing. >> >> On Mon, Feb 7, 2022 at 2:39 PM Stuart Stevenson <[email protected]> wrote: >> >>> I see it in your gcode file listing >>> >>> On Mon, Feb 7, 2022 at 2:39 PM Stuart Stevenson <[email protected]> >> wrote: >>>> Where is the decimal point in the X value of "End=(X14444, Y0.8964)"? >>>> I would say it is X1.4444 and expect this is a typo when you >>>> entered >> this >>>> in the email. >>>> >>>> >>>> On Sun, Feb 6, 2022 at 11:12 PM Andy Howell <[email protected]> wrote: >>>> >>>>> We had been cutting with the same gcode when suddenly it came up >>>>> with >> an >>>>> error: >>>>> >>>>> Radius to end of are differs from radius to start: >>>>> >>>>> Start=(X1.4208,Y4.8728) >>>>> >>>>> Center=(X1.4208, Y4.8964) >>>>> >>>>> End=(X14444, Y0.8964) >>>>> >>>>> r1=0.0236 >>>>> >>>>> r2=4.0001 >>>>> >>>>> Its got to some config issue. The same file runs in the simulator >>>>> just fine. That r2=4 is curious. We are cutting in a jig using fixture >>>>> G55. >>>>> We had touched off the Y by 4 inches to run the file again. That >>>>> worked fine. We more the Y back 4 inches and touched off again to >>>>> set the G55 back to its actual 0,0 origin. When we ran the time, >>>>> we started getting this error. >>>>> >>>>> This is the code in question. Its complaining about line N70. >>>>> >>>>> % >>>>> (TEST PIECE 4IN) >>>>> (MY PROGRAM COMMENT) >>>>> (T1 D=0.2362 CR=0. - ZMIN=-0.11 - FLAT END MILL) >>>>> N10 G90 G94 G17 G91.1 >>>>> N15 G20 >>>>> N20 G53 G0 Z0. >>>>> (BORE6) >>>>> N25 T1 M6 >>>>> N30 S18000 M3 >>>>> N35 G55 >>>>> N40 G0 X1.3853 Y0.8728 >>>>> N45 G43 Z0.6 H1 >>>>> N50 G0 Z0.08 >>>>> N55 G1 Z0.0236 F20. >>>>> N60 G18 G2 X1.409 Z0. I0.0236 K0. >>>>> N65 G1 X1.4208 >>>>> N70 G17 G3 X1.4444 Y0.8964 I0. J0.0236 >>>>> >>>>> Any ideas about what is wrong? We are running LinuxCNC 2.7.15. >>>>> >>>>> Thanks. >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Emc-users mailing list >>>>> [email protected] >>>>> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2F >>>>> lists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7 >>>>> C01%7Ctoddz%40pgrahamdunn.com%7Cc3e298355d4743fe3dd908d9eaa5ee85%7 >>>>> C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637798820689748518%7CU >>>>> nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6I >>>>> k1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=HwzgAjfzZCbbaXWERPeLnOVcvlx >>>>> Uz67OwIIr5D10RDo%3D&reserved=0 >>>>> >>>> >>>> -- >>>> 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. >>>> >>>> >>> -- >>> 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. >>> >>> >> -- >> 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 >> [email protected] >> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flis >> ts.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7C >> toddz%40pgrahamdunn.com%7Cc3e298355d4743fe3dd908d9eaa5ee85%7C5758544c >> 573f47cebee96c3e0806fb43%7C0%7C0%7C637798820689748518%7CUnknown%7CTWF >> pbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6 >> Mn0%3D%7C3000&sdata=HwzgAjfzZCbbaXWERPeLnOVcvlxUz67OwIIr5D10RDo%3 >> D&reserved=0 >> > _______________________________________________ > Emc-users mailing list > [email protected] > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cto > ddz%40pgrahamdunn.com%7Cc3e298355d4743fe3dd908d9eaa5ee85%7C5758544c573 > f47cebee96c3e0806fb43%7C0%7C0%7C637798820689748518%7CUnknown%7CTWFpbGZ > sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > D%7C3000&sdata=HwzgAjfzZCbbaXWERPeLnOVcvlxUz67OwIIr5D10RDo%3D& > reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Ctoddz%40pgrahamdunn.com%7Cc3e298355d4743fe3dd908d9eaa5ee85%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637798820689748518%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=HwzgAjfzZCbbaXWERPeLnOVcvlxUz67OwIIr5D10RDo%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
