Greetings all; That code snippet I posted to the devel list, could use some help.
These parts are nominally 2.05" wide, and I normally locate them in the vise so they are resting against a small bit of wood held across the end of the jaw opening as I clamp them up in the vise. However, judging where to touchoff X, or play with Y to get the cut centered on the wood, which will vary as wood will, is being a problem. If I could somehow determine the Y offset that would put the tip of the cutter at a fixed point, I could then drive the machine to put the corner of the edge of the wood at that fixed point about 10 thou from touching the near corner as I turn the cutter past it by hand, would be a tremendous amount of help. Then I could put in if needed, some fixed offsets to make sure it doesn't overcut and wreck another part. I only have 3 spare parts left to experiment with right now before I have to make more, and they are slightly thicker raw material than a S4S 1by, so I have to cut up sticks of mahogany that were going to be Gibson Guitar necks but failed inspection. I do have 3 or 4 more of those, but the supply isn't exactly endless. The final size of the arc is as yet unk, but is designed in my head to make up for the fact that my home made cutter for this is about 1/2" too small to cut the arc directly, it would be too deep in the center, so the arc is to effectively expand the cutters diameter by however much is correct. For sure, the .73" set in that code when I posted it is too much as I am still overcutting the edge of the workpiece. I found after making the first tooth that I had to make it about 1/4" longer for heel clearance, and because of the cutter attack angles, the wings of the cutter had to be opened up at an included angle of about 110 degrees in order for it to be 90 dgrees as it swings. In my mind (whats left of it), the ideal would be to drive x straight with y=0 until it touches in the center, subject only to the 2 thou per pass x increment, and let that be a fixed point by calculating the x retraction as the arc is done and adjusting the r value to "flatten the wings of the arc" by enough to cut the exact same arc as exists, with that center point remaining motionless. As it exists now, the g3 determines the amount of center projection. It shouldn't have to move much in order to put the tooth as close to the corner as it can be/is, sufficient to touch the corner is all I need, and even at less than the width of the part, the motions are obviously excessive, cutting huge amouns of air on both sides of the part. A outline of a procedure to do that would be a learning experience to implement. So would a method to automatically adjust the length of the arcs chord to get rid of the air cut as its wasted time. I'd assume that this is interlocked, but which to calculate first? IDK. Many thanks for any hints. Cheers, Gene Heskett -- "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> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
