Tutorial on modeling Unified screw thread on bolt in SolidWorks.
Here is the tutorial.
Start SolidWorks in part mode.
Draw a circle of 20mm dia.
Extrude it by 50mm.
Draw a polygon inside a circle of 32.5mm dia.
Extrude it by 10mm.
Draw a circle tangent to sides of polygon.
Check flip side to cut. Draft enable at 45.00º.
At distance of 3mm & angle 45º.
Select the outer edge and then convert entities.
Curves>>Helix and spiral.
Defined by Pitch and revolution. Pitch=3mm and revolution = 15.
Draw a profile like this. Since pitch is 3mm so keep the length be little less than pitch since at 3mm it will have intersection error.
Select the profile and the helix as the path.
And we have the unified screw threads.
sudhir friend if the thread pitch is 3mm, I know because that curve 1 mm diameter and rather than be a rounding triagulo you applied it. the only thing that I did not understand step 20
awesome , thanks alot !