587,798 active members*
3,226 visitors online*
Register for free
Login
Results 1 to 4 of 4
  1. #1
    Join Date
    Jun 2004
    Posts
    84

    NC Plot time cycle lathe wrong, answer

    I found out why a 35 sec job will read 35 seconds (That's correct).
    Other jobs about the same sec will read 2 min 45 seconds.

    The difference is jobs that thd with the G76 cycle will show 3 or more
    times the actual time.

    Been wondering why some the time is right & some it's way to much.

  2. #2
    Join Date
    Mar 2003
    Posts
    765
    I can't think of a reason that this would make a difference, but I'll check it out.

    Thanks,
    Scott

  3. #3
    Join Date
    Jun 2004
    Posts
    84
    Quote Originally Posted by MetLHead View Post
    I can't think of a reason that this would make a difference, but I'll check it out.

    Thanks,
    Scott
    Well I cut out the thd cycle & it's still 23M:29S. With thd cycle in it says
    25M:29S
    Actual time is 38 seconds. Not all my lathe programs do this about 2/3 are
    the right cycle time, the other end of this part is right 23S. I just can't see why.

    &HE:%
    :0458(BEN-SHAFT-M10)
    G20
    G65P9150H1.(SET-FOR-50-90-PS1)
    (BEN-BENT-SHAFT-M10)
    (P/N-SHAFTBENTM10-JOB->O458)
    N3(-TURN-&-FACE-T0303)
    (PUT-TOOL-NOSE-RADIUS-IN-GEO-FILE)
    G97M13S2500
    M98P1
    T0303
    G99
    G00X.6Z.200
    Z0.080
    G01X-0.060F0.006
    G00X0.600
    Z0.040
    G01X-.060F.006
    G00X.600Z.055
    Z0.
    G99G01X-.06F.006
    G00X.04Z.100
    G01G42X-.06Z0.F.010
    G01X0.3110F.0060
    G01X0.3910Z-0.0400F.0075
    G01Z-1.0000
    G01X0.470
    G01X0.5000Z-1.0150F.004
    G01Z-1.1000X.510
    G00X.600
    M98P2
    N5(-THD-OD-CUT-T0500)
    G97M13S2000
    M98P1
    T0505
    X0.515Z0.375
    /G76P010055Q0015R.0004
    (P=SPRING-PASSES.P--=PULL-OFF-DIS.P----=COMP-ANGLE)
    (Q=MIN-PASS-DEPTH.R=FINISH-PASS-AMOUNT)
    /G76X0.3185Z-1.018P0362Q0128R-.0F0.059067
    (X=ROOT-DIA-Z=LENGTH-P=SINGLEDEPTH-Q=1STPASSDEPTH-R=TAPER)
    M05
    M98P2
    /M21
    G00Z8.
    M30
    %

  4. #4
    Join Date
    Jun 2004
    Posts
    84
    I did find one thing, the other end says Average Feed Rate 28.9098
    & it is correct at 38 seconds.
    the above says 0.2831, seems most all the programs that the cycle time is right have Average Feed Rates of 26.... to 29....
    All those that come out way to long have a verysmall number in the AFR.

    I run these jobs all the time so I know the run fine. this is weird.

Similar Threads

  1. Part Cycle Time
    By Big"E" in forum Mastercam
    Replies: 2
    Last Post: 02-20-2007, 02:04 AM
  2. Long cycle time?
    By CNCtoday in forum Polls
    Replies: 5
    Last Post: 09-28-2006, 05:28 PM
  3. cycle time macro program
    By mcash3000 in forum CNC (Mill / Lathe) Control Software (NC)
    Replies: 1
    Last Post: 03-29-2006, 07:33 PM
  4. cycle time formula
    By cncsdr in forum MetalWork Discussion
    Replies: 7
    Last Post: 12-30-2005, 01:21 AM
  5. Max Tapping speeds/increasing cycle time
    By jderou in forum MetalWork Discussion
    Replies: 7
    Last Post: 12-23-2005, 02:51 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •