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IndustryArena Forum > MetalWorking Machines > Okuma > Help..taper correction and g75/g76...
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  1. #1
    Join Date
    Jul 2007
    Posts
    72

    Help..taper correction and g75/g76...

    ....
    Z.01 F.002
    G75 X=V2 L=-CH1
    G76 Z=-V10 L=CF1 F=FF
    G75 X=V3 L=-CH2
    PD=V3
    IF [V4 EQ 0] N12
    G76 Z=-V10-V11 L=CF2
    G75 X=V4 L=-CH3
    PD=V4
    ...
    N12
    IF [V23 EQ 0] N14
    G1 Z=-DL+.00
    G1 X=PD-.050 Z=-DL-.04 F.002
    GOTO N16
    ...
    I was hoping if I added a X value into the g75/g76 lines I could get taper correction. but that messes up end/start points so I cannot do this.Is there a simpler way than inserting a line between the g75 and g76 that would contain the end point/start point of consecutive g76/g75 commands?:banana:
    CHEERS!
    I'm just a butcher masquerading as a machinist

  2. #2
    Join Date
    Apr 2009
    Posts
    1262
    it is possible to add an A command to the G75/G76 line which defines an angle, but getting your results may be difficult.

    Best regards,

  3. #3
    Join Date
    Jul 2007
    Posts
    72
    kewl beans...I didn't know about A
    think I'll try
    ..
    g1 X..Z-R..A..
    g3 Z..L=R
    ..
    but I will test out A in G75 1st A=180-ATAN[dif dia/length]...or something
    CHEERS!
    I'm just a butcher masquerading as a machinist

  4. #4
    Join Date
    Apr 2009
    Posts
    1262
    Quote Originally Posted by gogego View Post
    kewl beans...I didn't know about A
    think I'll try
    ..
    g1 X..Z-R..A..
    g3 Z..L=R
    ..
    but I will test out A in G75 1st A=180-ATAN[dif dia/length]...or something
    CHEERS!
    Won't work like you are thinking in G1 G3 lines since they already have XZ positions and it would conflict. Will work with G1 Z-1 A-.001.

    Best regards,

  5. #5
    Join Date
    Dec 2008
    Posts
    3109
    Why not use the maths function to eliminate the taper
    - just re-state the X size at the end ( the endpoint having the taper cancelling value )

    Code:
     
     
    Z.01 F.002
    G75 X=V2 L=-CH1
    G76 X=[V2+0.0020] Z=-V10 L=CF1 F=FF
    G75 X=V3 L=-CH2
    PD=V3
    IF [V4 EQ 0] N12
    G76 X=[V3+.0020] Z=-V10-V11 L=CF2
    G75 X=V4 L=-CH3
    PD=V4
    ...

  6. #6
    Join Date
    Apr 2009
    Posts
    1262
    You can't use X,Z And G75/76 in the same line without getting an alarm.

    Best regards,

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