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M32 X .75 threads

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BrianPfeifer View Drop Down
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Joined: 13.Oct.2015
Location: United States
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BrianPfeifer Quote  Post ReplyReply Direct Link To This Post Topic: M32 X .75 threads
    Posted: 03.Jan.2018 at 22:23
Trying to cut M32 x .75 threads internal and external (mating pieces) in Aluminum. having no success.
Using G92 threading cycle (please don't ask me to switch to G76)

For the external i cut my stock to my External major Dia but after threading the diameter grows upwards of .020. I expect a little growth but this is excessive. I know my pitch is right, but now i'm questioning my major and minor diameters that i found using an online calculator because this is a custom thread.
Max major Dia = 1.2589
Min Major Dia = 1.2534
Max pitch Dia = 1.2398
Min Pitch Dia = 1.2353

Anyone got any suggestions? I need help.

Brian Pfeifer
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philippe JOSEPH View Drop Down
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Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2012
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Post Options Post Options   Thanks (0) Thanks(0)   Quote philippe JOSEPH Quote  Post ReplyReply Direct Link To This Post Posted: 04.Jan.2018 at 08:07
Hello Brian, I have uploaded a file in the CAD / BIM Library : SCREW H M 16 x 35.dwg with inside the example for diameter M 32 x 0.75.
All this is in accordance with what you can find at WIKIPEDIA ISO metric screw thread
Please tell us if this helped or not.


Edited by philippe JOSEPH - 04.Jan.2018 at 09:55
Philippe JOSEPH
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philippe JOSEPH View Drop Down
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Joined: 14.Mar.2011
Location: France
Using: AutoCAD Mechanical 2012
Status: Offline
Points: 886
Post Options Post Options   Thanks (0) Thanks(0)   Quote philippe JOSEPH Quote  Post ReplyReply Direct Link To This Post Posted: 05.Jan.2018 at 08:25
Hello Brian, I joint this picture because I don't know if you have AutoCAD.
Philippe JOSEPH
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