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  1. #1
    Join Date
    Jul 2011
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    0

    Fanuc threading parameters

    :drowning: I have a YCI TC26 with a Fanuc 21I. Can anyone tell me what parameter sets the automatic retract angle in a threading cycle.

  2. #2
    Join Date
    Mar 2003
    Posts
    2932
    If you're referring to the chamfer-out at the end of each pass, according to the manual, the angle is "approximately 45 degrees", and I'm pretty sure it's not adjustable by parameter.

  3. #3
    Join Date
    Feb 2006
    Posts
    1792
    You can only change chamfer distance.

  4. #4
    Join Date
    Jul 2011
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    0
    :banana: Hey i found the paramiter, it is 1530 you can't change the angle, but you can change the size. i set it to 0 and it worked great! i believe it only changes G76 and G92 threading cycles.

  5. #5
    Join Date
    Feb 2006
    Posts
    1792
    In G76, chamfer distance can be explicitly specified, which, I believe, would override this parameter. (Incidently, it is 5130)
    There is a parameter 5131 also for chamfering angle, but I have never tested it.
    It is generally believed that the angle is not adjustable. Somebody may please check and report the finding.

  6. #6
    Join Date
    Mar 2003
    Posts
    2932
    Quote Originally Posted by sinha_nsit View Post
    In G76, chamfer distance can be explicitly specified, which, I believe, would override this parameter. (Incidently, it is 5130)
    There is a parameter 5131 also for chamfering angle, but I have never tested it.
    It is generally believed that the angle is not adjustable. Somebody may please check and report the finding.
    My mistake. Parameter 5131 is not listed in the 21T parameter manual, but is in the 21i-T parameter manual.

  7. #7
    Join Date
    Feb 2006
    Posts
    1792
    Actually, this is a mistake perpetuated by Fanuc. Even i-series operator's manual says that the angle is approximately 45 degree. I also believed this until I saw parameter 5131, accidently.
    It is a fact that even though Fanuc does take care to enhance the software/hardware capabilities of their products, they do not always incorporate the changes/enhancements in their manuals. Only paramater manual remains updated.

  8. #8
    Join Date
    Jul 2010
    Posts
    104
    Type 1 or Type 2 programming? If you don't know redily, does your machine require 2 lines to begin a canned cycle, for example:

    G76 P010060
    G76 X1.500 Z-1.5.........

  9. #9
    Join Date
    Jul 2011
    Posts
    0
    Only needs one line to star canned cycles.

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