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IndustryArena Forum > Community Club House > Machinist Hangout > Need Help with school project
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  1. #1
    Join Date
    Dec 2014
    Posts
    3

    Need Help with school project

    Need some help in manual programming a part for a school project. Having the most trouble with the pocket. Actually having trouble with the whole part. Help with any part of writing this program would be helpful. Print and instructions attached. Thanks for any help.
    Attached Thumbnails Attached Thumbnails 04 CNC Program Assignment 8.pdf  
    Attached Files Attached Files

  2. #2
    Join Date
    Mar 2014
    Posts
    7

    Re: Need Help with school project

    here is a start
    I use canbam you will have to decide on the cutters

  3. #3
    Join Date
    Mar 2014
    Posts
    7

    Re: Need Help with school project

    ok read the assignment after making the drawing.how far down the cnc use are you. what programs are available from school. how far have you got.

  4. #4
    Join Date
    Dec 2014
    Posts
    3

    Re: Need Help with school project

    I am manual programming. G Code programming on a Haas CNC. I am not using any CAD/CAM program. Just manual programming. Mainly G01 G02 G03 etc. The circular pocket that uses a HELIX motion entry is where I am a little confused. I am using a 3/8 in cutter. The project is in wax, so the speeds and feeds are not critical. I really just need some help with the X Y Z coordinates and G code commands on the circular pocket. No cutter comp needed. Thanks.

  5. #5
    Join Date
    May 2014
    Posts
    23

    Re: Need Help with school project

    Well with a 3/8 cutter your finish cuts for the inner circle can be at X.9375 Y1.5 start and finish point for outer circle, and finish pass on the middle island can start and finish at X1.0625 Y 1.5..........................with your zero's in the bottom left corner.

  6. #6
    Join Date
    Dec 2014
    Posts
    3

    Re: Need Help with school project

    I am having some trouble with the center pocket. I have written the whole program and ran it through SEdit and it looks good. I then take it to the Haas CNC simulator and get the error message "R numbers invalid in G02". The radius is .375 so I cant change that value because then the radius will be wrong. Here is the block of code that gives the error. The error comes on line n330. I am wondering if the fact that the cutter and the radius is both .375 has anything to do with it. Someone else said something about a negative value for the radius, making it -.375. Any help at all would be appreciated.

    n320 g01 x.9375 y1.5 z0.0 (Center Pocket -.070 depth)
    n330 g02 x2.0625 y1.5 r.375 z-.070
    n340 g02 x.9375 y1.5 r.375
    n350 g02 x2.0625 y1.5
    n360 g01 x1.9375
    n370 g02 x1.0625 y1.5 r.375
    n380 g02 x1.9375 y1.5 r.375
    n390 g02 x1.0625 y1.5 r.375
    n400 g01 x.9375

  7. #7
    Join Date
    Feb 2014
    Posts
    67

    Re: Need Help with school project

    That error might mean your Haas isn't set up to accept R code for arcs, you might need to convert to I/J programming.

    Man they're making you do a Helix by hand!!! :drowning: good luck

  8. #8
    Join Date
    Nov 2012
    Posts
    68

    Re: Need Help with school project

    I think your n350 line needs a radius value. The control is reading many lines ahead and might throw an alarm up because of that. Also the negative radius value might be it too. Don't give up, you'll figure it out.

  9. #9
    Join Date
    Mar 2008
    Posts
    14
    Quote Originally Posted by Tcombs View Post
    I am having some trouble with the center pocket. I have written the whole program and ran it through SEdit and it looks good. I then take it to the Haas CNC simulator and get the error message "R numbers invalid in G02". The radius is .375 so I cant change that value because then the radius will be wrong. Here is the block of code that gives the error. The error comes on line n330. I am wondering if the fact that the cutter and the radius is both .375 has anything to do with it. Someone else said something about a negative value for the radius, making it -.375. Any help at all would be appreciated.

    n320 g01 x.9375 y1.5 z0.0 (Center Pocket -.070 depth)
    n330 g02 x2.0625 y1.5 r.375 z-.070
    n340 g02 x.9375 y1.5 r.375
    n350 g02 x2.0625 y1.5
    n360 g01 x1.9375
    n370 g02 x1.0625 y1.5 r.375
    n380 g02 x1.9375 y1.5 r.375
    n390 g02 x1.0625 y1.5 r.375
    n400 g01 x.9375
    The radius of a 3/8 cutter isn't.375 that's the diameter. I have never ran a haas but if you don't have the r values for the cutter set in your tool profile a mori will do weird ****!!!

  10. #10
    Join Date
    Jan 2005
    Posts
    15362

    Re: Need Help with school project

    Tcombs

    Check the spec on the Haas you are using, I don't think the tapping that they require you to do will work at S100, in wax it won't matter, in the real world it will

    Most are no good below 800 RPM

    As for using the R value attachment should help
    Mactec54

  11. #11
    Join Date
    Apr 2024
    Posts
    1

    Re: Need Help with school project

    I am also facing difficulty in my school project like you, but thanks to my friend who suggested me to try UK Assignment Help. They helped me complete my project, and I finished it within 24 hours; it's amazing! So now, whether I need IT Management Assignment Help, I contact them. The best part is their prices are also very reasonable.

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