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Showing results for tags 'g93'.
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I have created a program that finishes with a 4-axis rotary tool path. I am using a Haas VF2 with the Generic 4-axis haas post from MasterCam. It's about 80K lines of code that get output using G93 Inverse time feed. Feed is non-modal when using G93 so there needs to be an F-value on every single line while G93 is active. About 1 out of every 20 lines does not have an F value and I can't figure out why.. any thoughts as to how I can fix this? Thanks, Al
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Hi Guys, I'm having issues with using inverse time, the feeds are either too fast or too slow depending on what settings I use in my Control Def. (feed in minutes/seconds) I'm using a Mazak Integrex J400 and I only use Inverse time when I'm using the C-axis (lathe chuck) so the program switches between inches/minute and inverse time. I did some testing to see what exact time it's taking compared to what Mastercam says. This is what I did: I drew a Ø10.0 circle (circumference of the circle is 31.4159 = pi ) and made a rotary program for an endmill to cut on that circle at a feed rate of 31.4159 (pi) and it should take 1 minute to make the cut. My results: Rotary test 1 time in Mastercam using the inverse time feed rate setting set to minutes: 1m 1.20s -out put feed command has xxxx.xxx digits (ex. F6284.948) Rotary test 2 time in Mastercam using the inverse time feed rate setting set to seconds: 1m 1.20s -out put feed command has xxx.xxx digits (ex. F104.749) Rotary test 1 time in the J400: 12s Rotary test 2 time in the J400: 2m 52s The second test I did is a linear move 10" long at 10 ipm should take 1 minute to cut. (my control def set to feed in minutes.) That's exactly what it did, it took 1 minute to make the cut. It did what it was suppose to, so now I'm confused??? I expected the feed to be out by some factor so I could correct the rotary feed error. Here is a sample code: G68 X0. Y0. Z0. I0. J1. K0. R90. G0 G17 X-10. Y-5. G43 Z4. G93 G1 Z2. F5. Z1. F10. Y5. F1. Z2. F10. Z4. F5. G69 M05 I've used inverse time on a mill with a rotary axis and it worked flawlessly I would be cutting at 60 ipm from linear into a rotary cut and you could clearly see that cut was at the same feed. So now I have to reduce my feed values on a rotary cut so the tool will cut at the correct feed. It seems like there is a issue cutting with the C-axis like it's using some constant surface feed numbers to adjust the feed. I need to figure out if it's the machine or the code. Has anyone dealt with this before or has some information for using inverse time that may help. TIA, Greg
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Hi guys, i currently use two modified versions of mpmaster: no inverse (for general 3 axis work) inverse (for 4 axis work where i have xya axis moving simultaneously) better surface finish .... Question is can I get away with one version using a miscellaneous integer to switch between upm or inverse time? I'm thinking some sort of variable but not sure where to put it / call it out. TIA
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I'm trying to 2D contour some letters on the OD of a part in my 4th axis. N100(LETTERING) (COMPENSATION TYPE - OFF) /M08 G15H1 G56H1X.3421Y0.Z3.87S10000M03 (Z STOCK TO LEAVE = 0.) (XY STOCK TO LEAVE = 0.) A-28.895X.3421Y0.Z3.87S10000M03 Z1.92 G94G01Z1.866F10. X.3571 X.3721 X.3871 X.4021 X.4171 G93A-28.337F549.9 <------- alarm on this line 2262 code 38 (which makes no sense) The alarm reads: G188 or G189 is specified although the 2nd tool length offset specification is not selected. Anyone have this issue? Or is it me... again.
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