It's an open-membership community shop. A lot of people come with only one or two projects as a goal, not a lifetime commitment to a CNC career. And they want to be the one to use the machine.
Some have used the Shopbot without problems, yet ran into stuff pretty quickly with LinuxCNC here. Not too familiar with Shopbot but it seems to be more basic and doesn't throw more complicated concepts into it. Nobody I know uses tool radius compensation, CAM is entirely what works that out. I can only "train" people so much. I don't have control over their toolpath generation, so dictating preambles really isn't gonna happen. Not saying preambles don't make a lot of sense. Well, we found a problem tonight- the guy's copy of Vectric Aspire, when you select a "linuxcnc" target, generated this: G43.1Z1.7 1.7 was listed as the safe-z height. There's no reason I can see to put that into incremental Tool Offset. So then- get this- we selected "linuxcnc ARC" instead, whose only difference is supposed to be that circular arcs are made with G2/G3 arcs instead of many linear points. Lo and behold, the G43.1 command did NOT end up in the output file. Tried it several times. Wouldn't believe it if I hadn't seen it. Danny On 4/21/2016 7:57 PM, Bruce Layne wrote: > This sounds a bit more like a philosophical question than a technical > question. On one end of the spectrum are machinists, and part loading > monkeys are on the other end of the spectrum. We're all somewhere on > that spectrum, and that's fine, as long as we operate within our > abilities. It seems that your problem is that machine operators are not > operating within their abilities. Maybe that's a training issue. If > training doesn't work, maybe take away their keyboards and give the > operators a jog pendent and a user interface with CYCLE START, > PAUSE/RESUME, CYCLE STOP and EMERGENCY STOP. > > More to your inquiry, there are some tips and tricks that can help, but > not completely cure the problem you described. > > You should be able to set the privileges for each G code file or G code > directory so the operator can read but not write over the existing file. > > It's a good practice to have a line at the start of each G code program > that's similar to the startup code you listed, so every time the G code > is executed, it returns the machine to a known condition that is fully > determined so the program operates the same each time it's run. > > I'm sure others will chime in with useful suggestions, but there is no > such thing as foolproof. As a manufacturing engineer, I long ago > learned to never underestimate the creativity and perseverance of a > determined fool. > > You could also post the following sign on each machine: > > *ACHTUNG!* > ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS! > DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND > MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, > BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKEN. > IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN > KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS. > ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. > > > https://en.wikipedia.org/wiki/Blinkenlights > > Good luck! > > > > On 04/21/2016 08:02 PM, Danny Miller wrote: >> We're running a manual-toolchange CNC router in an open shop with >> beginner users. From Day 1, some things I thought would never happen >> somehow happened. >> >> Someone somehow set G64 Path Blending, and to a very high value, >> rounding off all the cuts. >> >> Someone managed to set Tool Length Offset, which makes no sense on a >> manual toolchanger. This left the machine screwed up all day. >> >> Really there's no point in these existing. Now I KNOW I can reset this >> stuff at startup: >> >> RS274NGC_STARTUP_CODE = G17 G20 G40 G49 G64 P0.001 G80 G90 G92 G94 G97 G98 >> >> Sure. And I do. But I don't train people to reboot LinuxCNC every time >> they start, and I don't plan to. >> >> It is possible to reconfigure so these commands CAN'T have any effect? >> e.g. someone mistypes "G64 P100" but it just gets ignored and raises an >> error message? >> >> I could have a second profile around that allows these commands, just in >> case someone DID have a use for them. >> >> Danny >> > ------------------------------------------------------------------------------ > Find and fix application performance issues faster with Applications Manager > Applications Manager provides deep performance insights into multiple tiers of > your business applications. It resolves application problems quickly and > reduces your MTTR. Get your free trial! > https://ad.doubleclick.net/ddm/clk/302982198;130105516;z > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
