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  1. #1
    Join Date
    Jul 2007
    Posts
    378

    Tap Feed Problems

    Hey All.

    Just wondering if anyone else is haveing problems with their tap feedrates when importing tools.

    When I import my tools from a tool table, the Feed rate for the taps is way off. After a lot of diging, I found the post was using 'tool_drill_lead' * 'spin' for the tap feed rate caluation.

    What is 'tool_drill_lead' on a tap and why is it being used for the feed rate caluation? I using the Standard gMilling_Haas_3x post witch we recived when installing the software.

  2. #2
    Join Date
    May 2004
    Posts
    4519
    Lead equals the distance the thread advances in one revolution. A 1/4" - 20 thread advances 1" on 20 revolutions, so to get the amount of advancing for one revolution, you would divide 1" by 20 revolutions (1" / 20 = 0.050"=lead). If you spin this tap 1000 times per minute (RPM), to get the feed rate needed, you would multiply the lead (0.050") times the "spin" (1000) which would be 0.050" X 1000 = 50 IPM (Inches Per Minute).

  3. #3
    Join Date
    Jul 2007
    Posts
    378
    I guess that makes sense.

    But why is the "tool_drill_lead" different than the "feed_teeth" value?

  4. #4
    Join Date
    Jul 2007
    Posts
    378
    I attached a file showing the error.
    Attached Files Attached Files

  5. #5
    Join Date
    Jul 2007
    Posts
    378
    I posted some screen shots of my tool set up and the Tap feed rate not matching the operation Data Feed Rate. Running Inventorcam 2012
    Attached Thumbnails Attached Thumbnails post error 1.jpg   post error2.jpg  

  6. #6
    Join Date
    May 2004
    Posts
    4519
    Feed per teeth is for milling. Period.

    Why your software is outputting the feed rate incorrectly, I have no idea. Maybe you need to contact support for your software.

    You know the correct answer now. You can input it manually before running the program.

  7. #7
    Join Date
    Jul 2007
    Posts
    378
    Quote Originally Posted by txcncman View Post
    Feed per teeth is for milling. Period.

    Why your software is outputting the feed rate incorrectly, I have no idea. Maybe you need to contact support for your software.

    You know the correct answer now. You can input it manually before running the program.
    If I wanted to wirte G-codes by hand, I wouldn't use cam!!!

    I have contacted Solidcam support and they did admit that there tool tables need work, and they are 'currently working' on the problem. I feel that they are waiting until the next version release to fix it, and in the meantime, I'm breaking Taps!

    I just can't belive I'm the only one with this problem. Nice software otherwise, but I will not tolerate improper feed rates with my cam software. Taps are no exception.

  8. #8
    Join Date
    May 2004
    Posts
    4519
    Quote Originally Posted by glovebox20 View Post
    If I wanted to wirte G-codes by hand, I wouldn't use cam!!!

    I have contacted Solidcam support and they did admit that there tool tables need work, and they are 'currently working' on the problem. I feel that they are waiting until the next version release to fix it, and in the meantime, I'm breaking Taps!

    I just can't belive I'm the only one with this problem. Nice software otherwise, but I will not tolerate improper feed rates with my cam software. Taps are no exception.
    Sorry. "Want to" and "have to" are sometimes different things.

  9. #9
    Join Date
    Jul 2007
    Posts
    378
    Quote Originally Posted by txcncman View Post
    Sorry. "Want to" and "have to" are sometimes different things.
    Thanks for clearing that up for me, but It still dosn't make me feel any better when there is a tap stuck in my part. I guess I'll have to learn to slow down and double check everything.

  10. #10
    Join Date
    Jan 2006
    Posts
    4
    Hi Glovebox20,
    I have the same problem except mine will post a feed rate of 196.456 if I don't catch it it turns my Haas into a punch press I had solidcam on the phone and got no real answer they told me to change the number of flutes on the tap and I thought what does flutes have to do with feed and pitch and then save the tap as a Tab file in the tool library so I did I made new Taps library as a Tab file and I can use a tap in one program and it will work fine but in the next program it doesn't work so I have to check all my tap code.

  11. #11
    Join Date
    Jul 2007
    Posts
    378
    Quote Originally Posted by simonsayshello View Post
    Hi Glovebox20,
    I have the same problem except mine will post a feed rate of 196.456 if I don't catch it it turns my Haas into a punch press I had solidcam on the phone and got no real answer they told me to change the number of flutes on the tap and I thought what does flutes have to do with feed and pitch and then save the tap as a Tab file in the tool library so I did I made new Taps library as a Tab file and I can use a tap in one program and it will work fine but in the next program it doesn't work so I have to check all my tap code.

    I got the same respond as well from Solidcam about the # of flutes. If you need help modfiying your post so the displayed Feedrate in your opertion Data is what Solidcam will post, I can help you out with that.

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