On Fri, 28 Feb 2014 16:31:43 -0800, you wrote: >On 02/28/2014 04:10 PM, Steve Blackmore wrote: >... snip >> There is virtually no limits to program lengths since tape died so >> writing subs isn't necessary to save space and serves no other purpose >> other than living in the 80's (or earlier :) >> >> >> Steve Blackmore > >I tend to agree. I have the loops in the g-code generator and >automatically get ... (see below)
Looks very similar to CAM produced code. As time is generally the most important thing to a commercial company, most CNC operations are done on a tool ordered system. There are other considerations like distance or operation based processing or a combination. Tool changes generally waste most time. Usually the CAM system will pick and do all the roughing first with the biggest rougher it can use on the majority of the job. It may then do a tool change to a smaller rougher to get to the finish allowance size on all the job. Then do the finish passes finally drill or finish any holes. Very simplified as all sorts of calculations will go on in a good CAM system to select the most efficient way of doing the job. For example - I do a lot of pick guards for guitars on the router. 1st op - 3mm drill - drill all screw holes 2nd op - .05 mill - cut outlines of pockets and larger holes 3rd op - .05 mill - cut any other straight sided outlines 4th op - 45 deg chamfer bit - countersink screw holes and cut remainder of outline. It takes longer to do one manual tool change than all the machining on one pick guard :) Steve Blackmore -- ------------------------------------------------------------------------------ Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
