i got your point sir. but what i mean is that, how can we determine the diameter of our materials to get the final diameter of our screw. ex. i use Ø340 as the approximate diameter of our material then if we stretch that material hopefully we can get the final diameter of screw which is Ø380. i have here the attached file of a final profile of screw. hopefully you can help me giving the best idea/technique in solidworks.
AttachmentsSHAFTLESS SCREW1.SLDDRW, 1.28 MB
I'm not sure how to do what you are asking in solidworks.
I made a helical surface, extruded up to it, knit surface on that, then thickened the knitted surface. It's probably a little weird in the holes, but perhaps it is close enough for what you're doing.
Answered with a tutorial: https://grabcad.com/tutorials/how-to-make-a-flight-of-screw
AttachmentsSHAFTLESS SCREW PLATE_flighted.SLDPRT, 336 KB