Not getting inverse time for Haas UMC-1000ss

[freddiea94]

Asking for help with the fusion 360 post. I'm trying to do a swarf toolpath inner profile but everything I've read about my issue so far seems to be the fact that my g code isn't getting output correctly. When it starts into the part everything seems fine, however, when i reach a certain part in the profile is slows WAAAAY down. so slow its as if it's dwelling. I understand the machine movement will fluctuate but I'm talking it's staying in a 4mm RAD with a 5/16EM for over 3 minutes...Machining with a Haas UMC-1000ss with HSM on and using Haas Next Generation post with UMC-1000 selected in the options. From what I've gathered i SHOULD be getting a feedrate on each line, however, I'm getting a single feedrate at the beginning of the toolpath. I have altered every option I can find and tried the code for each one with the same results each time. Changing options in the swarf toolpath and also options in the post processor.  

Any ideas? 

Here's a sample of my G code:

N25 T33 M6
N30 S3844 M3
N35 G59
N40 G53 G0 X0. Y0.
N45 M11
N50 M13
N55 G0 B0.137 C-24.534
N60 M8
N65 G254
N70 G0 X0.3913 Y1.3043
N75 G255
N80 G234 X0.9024 Y1.0219 Z2.1959 H33
N85 G1 B0.137 C-24.534 F800.
N90 G0 Z0.3535
N95 G1 X0.9023 Z0.3436 F26.139
N100 Z0.3338
N105 Z0.3239
N110 Z0.3141
N115 Z0.3042
N120 X0.9022 Y1.022 Z0.2944
N125 Z0.2845
N130 Z0.2747
N135 Z0.2648
N140 Z0.255
N145 X0.9021 Z0.2451
N150 Z0.2352
N155 Z0.2254
N160 Z0.2155
N165 X0.902 Z0.2057
N170 Y1.0221 Z0.1958
N175 Z0.186
N180 Z0.1761
N185 Z0.1663
N190 X0.9019 Z0.1564
N195 Z0.1466
N200 Z0.1367
N205 Z0.1269
N210 X0.9018 Z0.117
N215 Z0.1072
N220 Z0.0973
N225 Y1.0222 Z0.0875
N230 Z0.0776
N235 X0.9017 Z0.0678
N240 Z0.0579
N245 Z0.0481
N250 Z0.0382
N255 Z0.0284
N260 X0.9016 Z0.0185
N265 Z0.0086
N270 Z-0.0012
N275 Y1.0223 Z-0.0111
N280 X0.9015 Z-0.0209
N285 Z-0.0308
N290 Z-0.0406
N295 Z-0.0505
N300 X0.9011 Y1.0208 Z-0.0603
N305 X0.9001 Y1.0163 Z-0.0692
N310 X0.8985 Y1.0094 Z-0.0762
N315 X0.8965 Y1.0007 Z-0.0806
N320 X0.8943 Y0.9911 Z-0.082
N325 X0.8937 Y0.9887 Z-0.0819 C-19.408
N330 X0.8933 Y0.9869 C-15.564
N335 X0.8927 Y0.9841 C-9.797
N340 X0.8921 Y0.9814 Z-0.0818 B0.136 C-4.031
N345 X0.8918 Y0.9802 B0.163 C-0.09
N350 X0.8913 Y0.9781 Z-0.0817 B0.211 C6.806
N355 X0.891 Y0.9766 B0.247 C11.979
N360 X0.8904 Y0.9742 B0.301 C19.737

[Anonymous]

Hi, have you solved this problem already ?

[Jimmyfabs]

Any luck with this?  I have a UMC 750 and Im looking to try inverse feed time to see if it improves my toolpath jerkiness.  Ive messed around with every other tolerance I can think of.

[freddiea94]

Two years later and I have yet to find a solution for this other than programming simultaneous moves in powermill....still have issues with it today from fusion 360.

[Jimmyfabs]

I was able to figure this out for the Haas UMC Pre-NGC post....Im assuming it would work with the NGC but not certain.   In your CAM setup, edit the machine configuration.  Click on Multi-Axis on the left hand size, then hit the drop down for FEEDRATE TYPE.  You can choose inverse time there.  I tried it out on some of the toolpaths and honestly didnt notice much difference. It did smooth it out a bit but overall the other moves were slower.  Ive learned a good bit about simultaneous 5 axis over the past few months since I got my UMC 750 and one of the biggest settings that effects the jerkiness movement is the SEGMENT LENGTH or SMOOTHING DISTANCE (depending on the toolpath) under the multi axis tab.  Change that to something real small. You can also smooth out the linking moves by changing the RETRACTION POLICY under linking moves to SHORTEST PATH.  Just make sure you also change HIGH FEEDRATE mode to ALWAYS USE HIGH FEED.