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IndustryArena Forum > CAM Software > BobCad-Cam > Setting or Program fault?
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  1. #1
    Join Date
    Jul 2003
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    1220

    Setting or Program fault?

    Hi....When I generate code along a line with BobCad-CAM, for some unknown reason a G00 is thrown in for 1 or 2 blocks and then reverts back to G01. These lines should all be G01
    eg:
    N0222 G01 X24.095 Y7.795 Z0.
    N0223 X24.178 Y7.736 Z0.
    N0224 X24.267 Y7.688 Z0.
    N0225 G00 X24.453 Y7.629 Z0. ;<<<<< this line
    N0226 X24.648 Y7.617 Z0.
    N0227 G01 X24.847 Y7.639 Z0.
    N0228 X25.249 Y7.734 Z0.
    N0229 X25.64 Y7.839 Z0.
    N0230 X26.018 Y7.954 Z0.

    Is this a setting that needs changing?
    Any suggestions would make checking easier.

  2. #2
    Join Date
    Jan 2006
    Posts
    24
    What post processor are you using? I am using Mach 3 and I have been having problems with it leaving out a X or Y movement at times. It just started doing that this week. I do not know if these are related problems or two separate issues.

  3. #3
    Join Date
    Oct 2005
    Posts
    225
    I had similar problems once and they told me to put the BobCad disk in and when the install screen appeared select repair and that worked for me.

    Tommy C

  4. #4
    Join Date
    Jul 2003
    Posts
    1220
    southernexplore.....I put BobCad-Cam disk in and did a Repair but no change in the code produced.

    marty7001.....The post processor is Fagor 8055. Tried with other PPs which produced exactly the same results at the same coords.

    I'm starting to think it has something to do with my drawing.
    The drawing was brought in as a dxf which was drawn as a Spline Line using SolidWorks.
    Copy of the dxf file I'm having trouble with attached.

    Thanks for the suggestions.
    Attached Files Attached Files

  5. #5
    Join Date
    Oct 2005
    Posts
    225
    I just ran it through mine and it seems allright. I am using the Mach3 PP.
    I did not have to change anything. I just used profile and only cut it .062 deep though.

    Tommy C.

  6. #6
    Join Date
    Jul 2003
    Posts
    1220
    southernexplore
    On closer examination of the text I see there are gaps within the letters.
    This did not show in my original dxf file and only appears after saving from BobCad.
    Looks as if BobCad dosen't recognise some parts of the lines.
    I have attached a copy of the original dxf.
    Checking the difference will be appreciated.
    Attached Files Attached Files

  7. #7
    Join Date
    Oct 2005
    Posts
    225
    When I open up the file the letters are all over the place. That would cause a lot of problems.
    The letters do not seem to be on the same plane.
    Tommy

  8. #8
    Join Date
    Jul 2003
    Posts
    1220
    southernexplore
    Are you opening with BobCad-Cam?
    I'm using V20.5 and can open the LogoOrgin.DXF with no problem. All on Z0 Plane. The bottom left corner of the text is approx, X120 Y100 mm.
    Did the Logo.dxf file open the same?

  9. #9
    Join Date
    Jan 2006
    Posts
    24
    Thanks for the tip. I have done the repair and re-installed the Mach3 pp. I have not had a chance to try it yet. I will let you know how it works.

    Marty

  10. #10
    Join Date
    Jul 2003
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    1220
    This is what my screen looks like showing the gaps in the path which coincide with the G00.
    Attached Thumbnails Attached Thumbnails LogoPathFault.JPG  

  11. #11
    Join Date
    Oct 2005
    Posts
    225
    I am opening it with BobCad V20.6 and the first two letter are drawn on the Y and Z plane I believe. the file must be getting messed up while iam saving it.
    Did you get it to write the program yet?

    Tommy C.

  12. #12
    Join Date
    Jan 2006
    Posts
    24
    Are there any breaks in the line? I find that to cause me trouble. I can usually find the breaks in the lines by doing a shift-select and if the entire line is not selected then I zoom in to that section and find a small break. Close the break and try again until all is repaired.

  13. #13
    Join Date
    Jan 2006
    Posts
    24
    I just tried a couple of files after doing the repair and re-installation of mach3 PP and it seems to work now. We will see how long it stays that way.

  14. #14
    Join Date
    Jan 2006
    Posts
    24
    I opened the file in bobcad and all appeared fine on my system.

    marty

  15. #15
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    Jul 2003
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    1220
    southernexplore
    Not sure why your system opens parts on different planes. I have no problem there.
    I can generate the tool paths OK but it includes these G00. Looks like I need to thoughly check any code before I post to machine.
    What I now don't understand is that if BobCad believes there is a gap, why it doesn't raise the tool to the safe Z level. A receipe for broken tools?

  16. #16
    Join Date
    Mar 2006
    Posts
    1625
    did you set your r-plane on the depth setting page?If thats set to zero then the tool would not raise between cuts

  17. #17
    Join Date
    Jul 2003
    Posts
    1220
    Mike...
    Yes, the rapid plane is set at 40mm. If you goto post #10 and study the attached screen shot you can see near the top of the code where the tool gets raised to the Rapid Plane.
    Thanks for your input.

  18. #18
    Join Date
    Mar 2006
    Posts
    1625
    here the code I ran off your dxf

  19. #19
    Join Date
    Jul 2003
    Posts
    1220
    Mike
    Your code doesn't appears to have the problem but looks like the line arrows are not uniform as the tool path jumps all over the place.
    I've now found when generating the code and the Enviroment is set as Inch Units, there are no corrupting G00, but still appear when set as MM.
    This is all very bizarre.

  20. #20
    Join Date
    Jul 2003
    Posts
    1220
    After further testing I find I get errors from my dxf only if the Enviroment Coord Unit is less than 5.
    The setting needs to be done before opening which means Open, Set, Close and ReOpen.
    The number of errors varies depending on the Unit number.
    eg:1 = 8 errors, 2 = 4 errors, 3 = 2 errors. 4 = 2 errors and 5 = no errors.
    My fix at this stage is to have the Units set at cm, even though I prefer mm.

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