help please my feedrates are terribly slow with wrap toolpath


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Thread: help please my feedrates are terribly slow with wrap toolpath

  1. #1
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    Default help please my feedrates are terribly slow with wrap toolpath

    im using inventor hsm...

    i was able to figure out how to configure the post processor so that i have my 4th axis mounted on the left side of the table facing the x- direction.. so the A is turning in the direction that corresponds with the toolpath and simulation.

    im using a 1000:1 reduction harmonic 4th axis..

    first attemp, i had my configuration set rotation 360 rollover and the A axids would just turn and never do anything but turn..so i reset the general config and unchecked 360 rollover and it started to work properly

    i discovered that the ramp feedrate controls the a axis rotation i think, so on my first attempt i usually use 15ipm on the ramp feedrate.. but when i tried to cut, it did show 15ipm but i think because of the reduction ratio, it was going so slow i couldnt even see rotation..

    so i reposted and set the ramp feedrate to 100ipm and that really sped up the A axis,,,but when it comes time for the coordinated x and y moves during the wrap cutting, it obviously goes to the 20ipm feedrates..the wole thing looks kinda wrong..do i have to match the feedrate of the x and y to the A axis feedrates ... for example run 100ipm on cutting feedrate .. im scared to do that vecause it most certainly will i think brreak the tool..

    do i need to change something else in my general config..or in the post processor..or does someone maybe have a post processor with the A on the left side they might share that i could try.

    heres a copy of the first bit of tap ..i didnt let it go much farther than this, as it was panful to just sit there and watch me suck so bad
    (1001)
    (WRAP TEST )
    (T5 D=0.25 CR=0. - FLAT END MILL)
    (T9 D=0.125 CR=0. - FLAT END MILL)
    (T55 D=0.1181 CR=0. TAPER=118DEG - DRILL)
    G90 G94 G91.1 G40 G49 G17
    G20
    G28 G91 Z0.
    G90


    (2D ADAPTIVE1)
    M5
    M9
    T9 M6
    S6500 M3
    G54
    G0 A0.
    M8
    G0 X-0.7019 Y0.
    G43 Z1.3306 H9
    A-14.672
    Z0.9369
    Z0.7742
    G1 Z0.7617 F12.
    X-0.6842 Z0.7612 A-15.273 F100.
    X-0.6654 Z0.7607 A-15.202
    X-0.6483 Z0.7602 A-14.471
    X-0.6356 Z0.7597 A-13.191
    X-0.6293 Z0.7592 A-11.563
    X-0.6303 Z0.7587 A-9.837
    X-0.6385 Z0.7582 A-8.281
    X-0.6527 Z0.7577 A-7.137
    X-0.6705 Z0.7572 A-6.581
    X-0.6893 Z0.7567 A-6.699
    X-0.7062 Z0.7562 A-7.474
    X-0.7185 Z0.7557 A-8.785
    X-0.7243 Z0.7552 A-10.429
    X-0.7227 Z0.7547 A-12.151
    X-0.7141 Z0.7542 A-13.685
    X-0.6996 Z0.7537 A-14.794
    X-0.6816 Z0.7532 A-15.304
    X-0.6628 Z0.7527 A-15.139
    X-0.6462 Z0.7522 A-14.322
    X-0.6343 Z0.7517 A-12.981
    X-0.629 Z0.7512 A-11.323
    X-0.6311 Z0.7507 A-9.605
    X-0.6402 Z0.7502 A-8.093
    X-0.655 Z0.7497 A-7.022
    X-0.6731 Z0.7492 A-6.556
    X-0.6919 Z0.7487 A-6.769
    X-0.7082 Z0.7482 A-7.628
    X-0.7197 Z0.7477 A-8.998
    X-0.7245 Z0.7472 A-10.669
    X-0.7219 Z0.7467 A-12.381
    X-0.7124 Z0.7462 A-13.869
    X-0.6973 Z0.7458 A-14.903
    X-0.679 Z0.7453 A-15.322
    X-0.6603 Z0.7448 A-15.062
    X-0.6442 Z0.7443 A-14.163
    X-0.6332 Z0.7438 A-12.764
    X-0.6288 Z0.7433 A-11.082
    X-0.6319 Z0.7428 A-9.377
    X-0.642 Z0.7423 A-7.913
    X-0.6574 Z0.7418 A-6.918
    X-0.6758 Z0.7413 A-6.545
    X-0.6943 Z0.7408 A-6.852
    X-0.7102 Z0.7403 A-7.792
    X-0.7208 Z0.7398 A-9.218
    X-0.7246 Z0.7393 A-10.911
    X-0.721 Z0.7388 A-12.607
    X-0.7105 Z0.7383 A-14.045
    X-0.6948 Z0.7378 A-15.001
    X-0.6763 Z0.7373 A-15.327
    X-0.6579 Z0.7368 A-14.973
    X-0.6423 Z0.7363 A-13.994
    X-0.6321 Z0.7358 A-12.541
    X-0.6288 Z0.7353 A-10.84
    X-0.6329 Z0.7348 A-9.153
    X-0.6438 Z0.7343 A-7.743
    X-0.6598 Z0.7338 A-6.827
    X-0.6784 Z0.7333 A-6.547
    X-0.6968 Z0.7328 A-6.947
    X-0.712 Z0.7323 A-7.965
    X-0.7218 Z0.7318 A-9.443
    X-0.7246 Z0.7313 A-11.152
    X-0.7199 Z0.7308 A-12.828
    X-0.7086 Z0.7303 A-14.211
    X-0.6924 Z0.7299 A-15.086
    X-0.6737 Z0.7294 A-15.319
    X-0.6555 Z0.7289 A-14.872
    X-0.6406 Z0.7284 A-13.816
    X-0.6312 Z0.7279 A-12.314
    X-0.6289 Z0.7274 A-10.599
    X-0.6341 Z0.7269 A-8.935
    X-0.6458 Z0.7264 A-7.582
    X-0.6623 Z0.7259 A-6.748
    X-0.681 Z0.7254 A-6.562
    X-0.6991 Z0.7249 A-7.054
    X-0.7137 Z0.7244 A-8.147
    X-0.7226 Z0.7239 A-9.673
    X-0.7244 Z0.7234 A-11.393
    X-0.7187 Z0.7229 A-13.043
    X-0.7066 Z0.7224 A-14.367
    X-0.6899 Z0.7219 A-15.159
    X-0.6711 Z0.7214 A-15.297
    X-0.6531 Z0.7209 A-14.759
    X-0.6389 Z0.7204 A-13.63
    X-0.6305 Z0.7199 A-12.083
    X-0.6292 Z0.7194 A-10.358
    X-0.6353 Z0.7189 A-8.723
    X-0.6478 Z0.7184 A-7.431
    X-0.6648 Z0.7179 A-6.681
    X-0.6837 Z0.7174 A-6.591
    X-0.7014 Z0.7169 A-7.173
    X-0.7153 Z0.7164 A-8.338
    X-0.7233 Z0.7159 A-9.906
    X-0.724 Z0.7154 A-11.633
    X-0.7174 Z0.7149 A-13.252
    X-0.7045 Z0.7144 A-14.512

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  2. #2
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    Default Re: help please my feedrates are terribly slow with wrap toolpath

    it was definitely a stupid on my part...
    i checked the box for use radius as feedrate in the toolpath section
    use rotations was already cheacked

    and in general config i uncheckled 360 rollover... when it was checked it was looking for a negative number and never finds it with 360rollover checked.

    and somehow i totally screwed up the steps per setting in motor config, it was set to twice the actual amount...i think unchecking the 360 rollover somehow effected that im not sure.. so i rett the steps per and ended up at 222.22222
    and the above settings and im going to try again..but prelim looked good, i had to feedrate over ride to 30 percent because i had the ramp set to 100ipm..LOL//it was scary but with the 1/8 3 flue it was eating it no problem..

    will post back in a sec after i change the post



  3. #3
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    Default Re: help please my feedrates are terribly slow with wrap toolpath

    feeds and speeds techniques for cnc router working tool life





  4. #4
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    Default Re: help please my feedrates are terribly slow with wrap toolpath

    i guess i worded it wrong...i do know chipload and feedrates for different materials ...i just meant that i was having to use a crazy high feedrate in the cam to get the a xis to move along.. it was settings in toolpath in mach 3 were wrong..once i checked use radius for feedrarte in toolpath settings and unchecked 360rollover, it worked..



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help please my feedrates are terribly slow with wrap toolpath

help please my feedrates are terribly slow with wrap toolpath