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IndustryArena Forum > CAM Software > BobCad-Cam > BobCad Post Processors > How reverse rotary axis direction
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  1. #1
    Join Date
    Feb 2015
    Posts
    2

    How reverse rotary axis direction

    Hi.

    I have a problem with posting 4 axis program. Our rotary axis i set to turn regards to ISO, but Bobcad generates program in other standard. How change post to reverse the direction of rotary axis? I've tried to change #442 parameter but it doesn't work. It only changes first position block.

    I've read this article :
    4 Axis Wrapping

    but it doesn't helped and everything is still mirrored.

    With this parameters program looks like :


    Code:
    PARAMETERS
    440. What is the rotary output type (0=Abs Pos, 1=Signed ABS, 2=Signed Continuous) ? 2
    441. Multiaxis feed type (0=UPM, 1=INV on all, 2=INV on Rotary, 3=INV on 4 and 5 Axis) ? 2
    442. Wrapping X axis is (1=primary, 2=secondary, 3=tertiary)? 1
    Code:
    PROGRAM
    %
    O100
    ( PROGRAM NAME -BOBCAD2.NC)
    ( DATE = FRI. 06/03/2016 TIME = 01:38PM)
    N001G21
    N002G0G17G40G49G80G90
    (T2100 = 12.7 DIA. ENDMILL FINISH)
    (Machine Setup - 1  Profile Finish)
    (FEATURE 2 AXIS)
    N003G5.3P80
    N004T2100M06
    N005G90G54X16.35Y0.A180.S595M3
    N006A180.
    N007Z179.4M8
    N008Z159.08
    N009Z156.54
    N010G1Z142.F42.3787
    N011A-11.734F84.7574
    N012X16.352A-11.785
    N013X16.354A-11.807
    N014X16.356A-11.823
    N015X16.363A-11.848
    N016X16.369A-11.868
    N017X16.375A-11.883
    N018X16.387A-11.909
    N019X16.396A-11.925


    Code:
     PARAMETERS
     440. What is the rotary output type (0=Abs Pos, 1=Signed ABS, 2=Signed Continuous) ? 2
     441. Multiaxis feed type (0=UPM, 1=INV on all, 2=INV on Rotary, 3=INV on 4 and 5 Axis) ? 2
     442. Wrapping X axis is (1=primary, 2=secondary, 3=tertiary)? -1
    Code:
    PROGRAM
     %
     O100
     ( PROGRAM NAME -BOBCAD2.NC)
     ( DATE = FRI. 06/03/2016 TIME = 01:38PM)
     N001G21
     N002G0G17G40G49G80G90
     (T2100 = 12.7 DIA. ENDMILL FINISH)
     (Machine Setup - 1  Profile Finish)
     (FEATURE 2 AXIS)
     N003G5.3P80
     N004T2100M06
     N005G90G54X16.35Y0.A180.S595M3
    N006A-180.
     N007Z179.4M8
     N008Z159.08
     N009Z156.54
     N010G1Z142.F42.3787
     N011A-11.734F84.7574
     N012X16.352A-11.785
     N013X16.354A-11.807
     N014X16.356A-11.823
     N015X16.363A-11.848
     N016X16.369A-11.868
     N017X16.375A-11.883
     N018X16.387A-11.909
     N019X16.396A-11.925

    What should i do to reverse axis direction?? Please help!

  2. #2

    Re: How reverse rotary axis direction

    You may be able to effect the change you want by editing your Machine Definition as this is where the axis alignment and direction are defined for your machine.

    I believe the convention for milling machine axis alignment and direction is a convention not affected by your choice.
    I researched milling machine axis alignment and direction convention before mounting and wiring my A axis and set it up accordingly, when I subsequently bought BobCAD-CAM I found it's default to agree.

    - Nick

  3. #3
    Join Date
    Dec 2008
    Posts
    4548

    Re: How reverse rotary axis direction

    The machine definition is where you match the movement of your machine...

    These integer values control direction. This value from positive to negative will reverse the A rotational direction.

    Attachment 323714

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