Tutorial - Modeling Unified screw threads on bolt in SolidWorks?

Sudhir Gill

24 Feb, 2012 03:33 PM

Here is the tutorial.

1. Step 1:

   Start SolidWorks in part mode.
   

   

2. Step 2:

   Top plane>>Sketch.
   

   

3. Step 3:

   Draw a circle of 20mm dia.
   

   

4. Step 4:

   Extrude it by 50mm.
   

   

5. Step 5:

   Top face>>Sketch.
   

   

6. Step 6:

   Draw a polygon inside a circle of 32.5mm dia.
   

   

7. Step 7:

   Extrude it by 10mm.
   

   

8. Step 8:

   Top face>>sketch.
   

   

9. Step 9:

   Draw a circle tangent to sides of polygon.
   

   

10. Step 10:

    Extruded cut.
    

    

11. Step 11:

    Check flip side to cut. Draft enable at 45.00º.
    

    

12. Step 12:

    Chamfer.
    

    

13. Step 13:

    At distance of 3mm & angle 45º.
    

    

14. Step 14:

    Top plane>>sketch.
    

    

15. Step 15:

    Select the outer edge and then convert entities.
    

    

16. Step 16:

    Curves>>Helix and spiral.
    

    

17. Step 17:

    Defined by Pitch and revolution. Pitch=3mm and revolution = 15.
    

    

18. Step 18:

    Right plane>>sketch.
    

    

19. Step 19:

    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.
    

    

20. Step 20:

    Sweep cut.
    

    

21. Step 21:

    Select the profile and the helix as the path.
    

    

22. Step 22:

    And we have the unified screw threads.