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Trouble with making a thread

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6件のコメント

  • Jacant

    When you draw the triangle to use for the thread the edges must overlap for it to work correctly, (see image for an M6 1mm thread)

    Just pull the vertical line in. It does not matter how much.

    This is only the outline. A correct thread will have chamfers added. This can be done in the sketch, make sure it overlaps, or later by chamfering the model.

    http://www.metrication.com/engineering/threads.html

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  • John Davis

    Can't thank you enough Jacant!!!  ....been fighting the same problem every day for a week....driving me nuts!  Finally, on the 2nd day of studying your drawing, it all of a sudden became clear as a bell to me.  I whipped up a model in DSM and used your exact numbers, 1 mm pitch and 1.155 length of the sides of the triangle and low and behold threads appeared.  Hallelujah!!!!   

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  • Jacant

    I am glad that you found my explanation useful.

    The problem is where do you 'place' the 'triangle' in relation to the 'axis'; to produce the thread.

    You may find this link even more useful.

    https://www.amesweb.info/Screws/IsoMetricScrewThread.aspx 

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  • John Davis
    Thank you Jacant for leading me to a very useful website.  There is so much information there!!!  I have started a bookmark folder called "Threads", and have started to breakdown the website into individual bookmarks in the folder according to subject.  As to placement of the 'triangle' in relation to the "axis'; to produce the thread, what I learned from Jim Taylor's YouTube tutorials, DesignSpark Mechnical: Making a Series of Nuts: Pt 1, 2. and 3 helped me a great deal.  Below is a screen print from Pt. 2 showing the correct placement of the triangle.  This information along with your information about making the sides of the triangle 1/6 longer than the pitch of the thread you are cutting, has eliminated all error messages, resulting in 100% thread making success!!!
    Inline image
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  • Lauren Mendenhall

    How would a person go about drawing this thread? I will have to draw both the male and female. I have never drawn threads, and am not an engineer by trade. I am simply drawing exact tools to render the images for brochures because I am OCD with respect to model accuracy on tech brochures. Any help would be appreciated. I have the rest of the tool drawn, and am currently attempting to draw the male end. I will attach a screen shot when I finish if I finish it correctly.

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