rsspopla.blogg.se - february 2022

Using the "Solid - Differnece" command, subtract the thread profile/cutting surface from the bolt diameter cylinder.Move the rotated bolt diameter circle in the X axis -1/4 inch and create a 1" long cylinder using the "Solid - Extrude Planar Curve" command in the X axis.Using your bolt profile you created in Step 1, rotate your bolt diameter circle 90 degrees on the Y axis.You now have your thread profile/cutting surface. Taking the surfaces created in Steps 8 through 11, explode and then rejoin them into 1 surface.Repeat the same process as used in Steps 8 & 9 to create the disappearing thread surfaces.Once completed, you can join all 3 surfaces together into 1 (this will close off the edges, assuring your thread surface won't have any bad edges to deal with).

When promted, choose the "Follow Curve" preview and select "OK".

Taking the last thread curve, again use the "Sweep 1 Rail" command using the connecting minor diameter curve of the thread surface you just created in Step 8.

When prompted, choose the "Right Side" preview and select OK.

Taking two of the thread curves (shown in cyan), use the "Sweep 1 Rail" command using the helix as the path.

Do not join the thread curves or helixes.

You now have the thread curves required to sweep your thread profile curves.

Trim back the helix to the cutting plane.

Then create a cutting plane and place it approximately 1/2 turn into the scaled helix curve.

Take the copied helix and scale it up (in all three axes) by 1.25.Copy your thread helix from end to end (this is so that you can create your disappearing thread curve).Create the thread helix to match your TPI (threads per inch) specifications.Move the thread profile so that the middle of the minor diameter lines up with the start of your bolt profile. Make sure that your thread profile extends beyond the bolt diameter line. Insert a line to establish the pitch length and draw your thread profile.Layout bolt cylinder diameter and profile.