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  1. #1
    Join Date
    Jul 2009
    Posts
    147

    PP thread milling

    I was playing around with my path pilot today. Thread milled a hole and the threads were left hand. I don't see anywhere to change to right handed threads.
    Don't Panic!

  2. #2
    Join Date
    Dec 2010
    Posts
    1230
    Quote Originally Posted by davidperry3 View Post
    I was playing around with my path pilot today. Thread milled a hole and the threads were left hand. I don't see anywhere to change to right handed threads.
    I don't have it, but is there a top-bottom vs bottom-right option? Typically a right handed thread is milled bottom of hole to top.

  3. #3
    Join Date
    Mar 2012
    Posts
    51

    Re: PP thread milling

    If you were using the conversational page to program the thread mill, and you haven't upgraded to V1.6, you may want to. It lists the left hand instead of right hand threads as a bug fix.

    Direct Document and Software Download | Tormach Inc. providers of personal small CNC machines, CNC tooling, and many more CNC items.

    Adam

  4. #4
    Join Date
    Nov 2013
    Posts
    402

    Re: PP thread milling

    Just change G02 to G03, or vise-versa.

  5. #5
    Join Date
    Mar 2009
    Posts
    1863

    Re: PP thread milling

    I had the same problem the first time I cut an inside thread. I must have reprogrammed that thread a dozen times before it hit me like someone hit me with a baseball bat.

    START AT THE BOTTOM AND THREAD UP.
    You can buy GOOD PARTS or you can buy CHEAP PARTS, but you can't buy GOOD CHEAP PARTS.

  6. #6
    Join Date
    Jul 2009
    Posts
    147

    Re: PP thread milling

    Installed v 1.6 the threading appears to work normally. I did learn that the machine needs to be out of e-stop to choose internal or external threads in the conversational tab. I also noticed that the z dro does not change while the machine is running (the real z is actually moving normally).
    Don't Panic!

  7. #7
    Join Date
    Sep 2009
    Posts
    318

    Re: PP thread milling

    I did thread milling on PP v1.6 the other day and starting at the top and going down worked just fine.

  8. #8
    Join Date
    Feb 2006
    Posts
    7063

    Re: PP thread milling

    Quote Originally Posted by compunerdy View Post
    I did thread milling on PP v1.6 the other day and starting at the top and going down worked just fine.
    Whether you go top-down or bottom-up is a function of both whether you're cutting LH or RH threads, and whether you're climb or conventional milling.

    Thread Milling Direction
    =================
    RH Climb Bottom-Up
    RH Conv. Top-Down
    LH Climb Top-Down
    LH Conv. Bottom-Up

    When thread-milling, climb milling is strongly preferred.

    Regards,
    Ray L.

  9. #9
    Join Date
    Mar 2009
    Posts
    1863

    Re: PP thread milling

    Quote Originally Posted by SCzEngrgGroup View Post
    Whether you go top-down or bottom-up is a function of both whether you're cutting LH or RH threads, and whether you're climb or conventional milling.

    Thread Milling Direction
    =================
    RH Climb Bottom-Up
    RH Conv. Top-Down
    LH Climb Top-Down
    LH Conv. Bottom-Up

    When thread-milling, climb milling is strongly preferred.

    Regards,
    Ray L.
    OR, climb cutting or conventional cutting. To climb cut a right hand internal thread, start at the bottom and thread clockwise up. If you go top down, you'll be conventional cutting. Not really cutting, just pushing material out of the way.
    You can buy GOOD PARTS or you can buy CHEAP PARTS, but you can't buy GOOD CHEAP PARTS.

  10. #10
    Join Date
    Jul 2004
    Posts
    1424

    Re: PP thread milling

    Quote Originally Posted by davidperry3 View Post
    I also noticed that the z dro does not change while the machine is running (the real z is actually moving normally).
    Was that only while you were thread milling or all the time? Did you feed that back into Tormach's Beta Bug reporting database?

    http://www.tormach.com/pathpilot_tracking.html
    Tim
    Tormach 1100-3, Grizzly G0709 lathe, Clausing 8520 mill, SolidWorks, HSMWorks.

  11. #11
    Join Date
    Feb 2006
    Posts
    7063

    Re: PP thread milling

    Quote Originally Posted by Steve Seebold View Post
    OR, climb cutting or conventional cutting. To climb cut a right hand internal thread, start at the bottom and thread clockwise up. If you go top down, you'll be conventional cutting. Not really cutting, just pushing material out of the way.
    Did you not bother to actually read what I wrote before responding? And conventional milling is hardly "just pushing material out of the way". It cuts, and makes chips, just like climb milling, the only difference being the chip is thicker at the end of the cut than at the beginning, while climb milling is exactly the opposite.

    Regards,
    Ray L.

  12. #12
    Join Date
    Jan 2013
    Posts
    97

    Re: PP thread milling

    All of the conversational programs appear to climb mill by default, without the option to conventional mill.

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