buttress threads

[makersmark]

i guess i have posting my questions on the wrong feed, but i hope someone here can help. I know that in the mechanical handbook there are equations to find the geometry of a buttress threads, but they are only for standard 7/45 threads. would anyone have any information on where to find equations that can be applied to any buttress thread, possibly based off of the lead angle of such thread?

 

[boo1]

Kennametal has info on 7 deg pressure flank leading, we have used 10 deg british pressure flank leading too

http://www.kennametal.com/content/d...679_MasterCat_stationary_threading_metric.pdf

pp 96-100
buttress threads

 

[makersmark]

thank you. that is a good starting point although I am looking for a little more info on the equations behind the 10 deg buttress and 3 deg buttress. i know that most of the equations used in the 7/45 are related to pitch and the lead angle, but can not find any information on the equations for a 10 deg.

 

[boo1]

http://www.korloy.com/newkorloy/eng/file/2012_D_inch.pdf

pp d29

 

[juergenwt]

Look for Buttress coarse and fine. Scroll down.

http://www.gewinde-normen.de/en/buttress-coarse-thread.html

 

[Sparweb]

Maybe ANSI expands on the definition of the thread form in B1.9
This one is for the 7/45 (not the one you want) but may have a cross-reference to a general form.

http://webstore.ansi.org/RecordDetail.aspx?sku=ANSI/ASME+B1.9-1973+(R2001)

STF