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Thread: Fagor 800T

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  1. #1
    Join Date
    May 2012
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    Talking Fagor 800T

    Im having an issue getting this threading program to work. Here is my code :

    N106 G97 S200 M04
    N108 G00 T6.6
    N110 G00 X1.25 Z-1.55
    N112 G86 P0=K1.25 P1=K-1.55 P2=K1.065 P3=K-8.750 P4=K.0925 P5=K.006 P6=K.150 P7=K.003 P10=K.125 P11=K.00 P12=K0
    N114 G00 X1.25


    the thread cuts tapered. This is an Acme thread straight angle entrance .093 deep.

  2. #2
    Join Date
    Sep 2010
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    1230
    Quote Originally Posted by Jones'r View Post
    Im having an issue getting this threading program to work. Here is my code :

    N106 G97 S200 M04
    N108 G00 T6.6
    N110 G00 X1.25 Z-1.55
    N112 G86 P0=K1.25 P1=K-1.55 P2=K1.065 P3=K-8.750 P4=K.0925 P5=K.006 P6=K.150 P7=K.003 P10=K.125 P11=K.00 P12=K0
    N114 G00 X1.25


    the thread cuts tapered. This is an Acme thread straight angle entrance .093 deep.
    Hi Jones'r
    When cutting a parallel thread the P0 and P2 arguments must be the same value (the major diameter for an external thread). If these values are different, a tapered thread will result.

    I note also that the P5 argument is quite small. This argument sets the depth of cut of the initial pass. If this value is a positive value, as in your example, the depth of cut of each successive pass will be diminished according to the the following algorithm, P5 * SQR(N), where N = the nth number of threading pass. Such a small initial pass will result in many thread passes being made. If this argument is expressed as a negative value, all thread passes will be clamped at the P5 value.

    Regards,

    Bill

  3. #3
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    May 2012
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    Quote Originally Posted by angelw View Post
    Hi Jones'r
    When cutting a parallel thread the P0 and P2 arguments must be the same value (the major diameter for an external thread). If these values are different, a tapered thread will result.

    I note also that the P5 argument is quite small. This argument sets the depth of cut of the initial pass. If this value is a positive value, as in your example, the depth of cut of each successive pass will be diminished according to the the following algorithm, P5 * SQR(N), where N = the nth number of threading pass. Such a small initial pass will result in many thread passes being made. If this argument is expressed as a negative value, all thread passes will be clamped at the P5 value.

    Regards,

    Bill



    here is the example i have in the book its an M16x1 16 mm long thread the explanation in the book is not good do you mind explaining each P for me

    N150 P4=K0.7 P11=k0 P16=k0 P128=k0
    N151 P100=k16 P101=k0 P102=k16 P103=k-16 P8=k1 P14=k0.613 P19=k15 P20=k1
    N155 G67 N3
    thanks

  4. #4
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    Quote Originally Posted by Jones'r View Post
    here is the example i have in the book its an M16x1 16 mm long thread the explanation in the book is not good do you mind explaining each P for me

    N150 P4=K0.7 P11=k0 P16=k0 P128=k0
    N151 P100=k16 P101=k0 P102=k16 P103=k-16 P8=k1 P14=k0.613 P19=k15 P20=k1
    N155 G67 N3
    thanks
    What model control are you dealing with. The format for thread cutting in your previous post is correct (except for the incorrect P2 value). G67 is not a lathe G code that I'm aware of. G67 is used in the milling software.

    Regards,

    Bill

  5. #5
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    May 2012
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    Quote Originally Posted by angelw View Post
    What model control are you dealing with. The format for thread cutting in your previous post is correct (except for the incorrect P2 value). G67 is not a lathe G code that I'm aware of. G67 is used in the milling software.

    Regards,

    Bill




    The model control I'm using is a Fagor 800T

  6. #6
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    Sep 2010
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    1230
    Quote Originally Posted by Jones'r View Post
    The model control I'm using is a Fagor 800T
    G67 N3 is used when using the semi auto programming system of the control, so it would seem that this the way in which you're creating your programs. G86 is not accessible via the keypad, and is used in an ISO program. The G67 defines a Canned Cycle and the N3 refers to it being a Threading Cycle.

    N150 P4=K0.7 P11=k0 P16=k0 P128=k0
    N151 P100=k16 P101=k0 P102=k16 P103=k-16 P8=k1 P14=k0.613 P19=k15 P20=k1
    N155 G67 N3

    The meaning of the various parameters used in the cycle above are as follows. The Spindle Speed and direction must be specified before calling the cycle

    P4 = First threading pass. The depth of each pass is a function of the corresponding pass number ( D x SQR(n)).

    P11 = Type of thread. K0 = OD thread, K1 = ID thread

    P16 = The penetration angle of the tool with respect to the X axis. If equal to "0", the thread penetration will be radial. If equal to half the tool angle, the tool will penetrate following the flank of the thread

    P128 = Thread exit distance. It sets the distance from the end of the thread when it starts leaving it.
    If P128=K0, there is no thread exit

    P100 = X coordinate of the "BEGIN" point

    P101 = Z coordinate of the "BEGIN" point

    P102 = X coordinate of the "END" point

    P103 = Z coordinate of the "END" point

    P8 = Thread Lead

    P14 = Sets the full depth of the thread. It must have a positive radius value

    P19 = Safety standoff distance along the X axis (in radius)

    P20 = Safety standoff distance along the Z axis

    Regards,

    Bill

  7. #7
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    May 2012
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    32

    Manual Pages

    I've included the manual pages scanned. Ive tried putting this exact code from the example in, but it only does one pass then completes.
    Attached Files Attached Files

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