Threads
Threads
(OP)
is there any relationship between pitch, major and minor diameters of a thread. let me know if this one is true(major dia. - minor dia. = pitch).a new problem arises when u increase the value of the pitch.let say first I restrict the value of pitch to 1 and then to 5.according to me there must have been a difference in visualisation of views(front,left,top)when I switch over from part design wrkbnch to drawing wrkbnch.but I hardly see any difference.please elaborate.





RE: Threads
For metric threads, the max pitch dia is = basic major dia - 0.649519 * pitch - es (based on fastener grade). The min pitch dia = max pitch dia - value from a table based on pitch and grade.
RE: Threads
make a solid cylindrical rod .click on thread/tap tool in dress up features in part design.adjust the values.now switch over to drwing wkbcnh.
if the threads are not visible in the drawing named file, right click on the views in the specification tree and check the centreline, hidden line, axis, thread. u wont see any difference if u change value of pitch in the part design file and then coming over again to drawing workbench .
RE: Threads
If you have a special, non-standard thread, you might want to model the threads in 3D with the exact thread shape and pitch. Then the associated drawing will show the thread exactly as you modeled it in 3D.
For more information about representing threads on drawings please refer to the ASME, ANSI, ISO, JIS, DIN or whatever drafting standard you are using.
There is an excellent forum here on Eng-Tips specifically for DRAFTING STANDARDS, GD&T, AND TOLERANCE ANALYSIS that contains a wealth of information about general drafting topics.
RE: Threads