Depth of modified square thread
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Re: Depth of modified square thread
Re: Depth of modified square thread -- SGILL	Post Reply	Top of thread	Forum

Posted by: lbmakem ® 11/29/2005, 17:24:21 Author Profile Mail author Edit

hi do you mean acme thread when you say square thread

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Re: Depth of modified square thread
Re: Re: Depth of modified square thread -- lbmakem	Post Reply	Top of thread	Forum

Posted by: SGILL ® 11/29/2005, 19:20:07 Author Profile Mail author Edit

IT IS JUST LIKE SQUARE BOX WITH NO SIDE ANGLE AND HAS 4.50 DEG HELIX ANGLE

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Re: Depth of modified square thread
Re: Re: Depth of modified square thread -- SGILL	Post Reply	Top of thread	Forum

Posted by: lbmakem ® 11/30/2005, 12:55:01 Author Profile Mail author Edit

hi if what you have is a square thread its a very old style of thread used for power-transmission purposes but i hope the following will help. width of the tooth=.5*pitch width of the tooth space=.5*pitch depth of thread =.5*pitch going on the info given ie 1.5od,.375 pitch, the angle worked out at 5'-11 not4.5'

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Re: Depth of modified square thread
Re: Re: Depth of modified square thread -- lbmakem	Post Reply	Top of thread	Forum

Posted by: lbmakem ® 12/01/2005, 17:41:07 Author Profile Mail author Edit

found a bit of info on modified square threads, they are not square but have a 10degree included pressure angle,pitch dia=od-(pitch*.5),the basic width of the crest of the thread =.4563*pitch and the same calc for the basic flat at the root of the thread

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