On Saturday 15 February 2014 11:32:11 John Thornton did opine: > There is a problem with my code when the tool diameter is less than 1/2 > the hole diameter. From the back plot it cuts a small hole on center > then cuts a larger hole off center. Either your the first to use this > program or the first to use it with the tool size less that 1/2 the hole > size... in any case you just made history! > That is not the case here, tool is .250", hole wanted is .850". And yes I've used it before and have had to fudge things to get the desired size. Apparently, only when the stepover is small enough to force the spiral, does it work correctly.
And a straight plunge cut with a 2 spiral flute flat faced end mill isn't so easy on the mill, so I usually use a drill bit. I'll do that here too. One of the guys on the python list looked at it last night and said you had a mixture of both spaces and tabs for the python control indentation. That can do an excellent job of hiding bugs. Advised getting rid of the tabs completely. For this, I'll need a pilot hole of about 9mm all the way thru so thats the first operation, drilling that, probably in 2 passes. That will give me a place for the swarf to fall through too. > Rather than fixing that old code I'll add it to my new G code generator > > http://gnipsel.com/files/g-code-generator/ > The .zip I assume is the whole collection? Thanks John. > JT > > On 2/14/2014 6:42 PM, Gene Heskett wrote: > > Greetings; > > > > I didn't look to see whose code that is, but I made several passes at > > trying to use it to bore a hole .7" deep in a 1" piece of steel this > > afternoon, and cannot make sense out of what its giving me. > > > > I specced a .250 diameter mill, feedrate of 8, depth increment of > > .015, a stepover of 25%, 2000 rpm, no bolt size but an .850" pocket > > .700" deep in those 2 boxes in the lower left corner. > > > > It gave me a pocket diameter of .650, several times. So I added the > > missing .2" to the pocket size, (lower left corner of its window) > > bringing that up to 1.05", which in fact gave me code that would have > > gnawed a pocket 1.05" in diameter. > > > > So why do I get the wrong answer when I give it .85"? > > > > Thanks. > > > > Cheers, Gene > > ------------------------------------------------------------------------ > ------ Android apps run on BlackBerry 10 > Introducing the new BlackBerry 10.2.1 Runtime for Android apps. > Now with support for Jelly Bean, Bluetooth, Mapview and more. > Get your Android app in front of a whole new audience. Start now. > http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.cl > ktrk _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- "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> NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
