Marty Swartz wrote: > Thanks, Chris! I agree with Sven, you've made G41/G42 perfectly clear. > > I've spent the last several hours banging my head against my NEXT challenge, > one that I'm sure that many of you have been through. I want to use a .25" > endmill to cut a hole 0.505" in diameter. My (fruitless) approach so far has > been as follows. (Sorry for the G-English) > > a) start at x0y0, > b) G42 to get tool comp > c) G1 out to a point on the .505" circle. > d) G02 in a circle, ramping down .1" in Z > e) G02 in a circle, ramping down to .2" in Z > > So far I can't even write code (using expressions and named parameters) that > EMC will accept. I'm clearly in that amazing space where "experience" would > indicate a viable clever way to proceed. However, I am not yet experienced, > and today I certainly not clever enough? Can who is both of these point me > in a useful direction? (Ultimately I want to mill a number of these into a > single blank.) > The approach after the G42 is the key. Presuming the center of the hole is at X0 Y0
g40 g0z.1 x1y-.5 (this puts the cutter below and right of center) g42dxx (xx being your tool number from tool offset table) g1x.1y-.2525f2 (bring tool close to start and with offset and feed at 2) x0y-.2525z0 (brings tool to Z zero and at lower tangent to the hole) g2x0y-.2525j.2525z-.1 (tool will describe a circle with a radius of .2525 above the start point of Y with Z going down to -.1) repeat previous G2 line with lower Z's until thru part g0z.1 (raise cutter to clear part) g40(turn off offset after clearing part, ask me how I know) copy and paste above and check it out on the preview > Hoping to wise up sooner or later, > - Marty > > > On Tue, Feb 3, 2009 at 10:29 AM, Sven Wesley <svenne.d...@gmail.com> wrote: > > >>That was one of the best descriptions of G41/42 I've ever seen. Great >>Chris! >> > > > ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
