1 ACCEPTED SOLUTION
Accepted Solutions
Attached is a Creo 2.0 full version of a parametric bent All-Thread. You can tweak the parameters in relations and all the features will update accordingly.
I have tested a few sizes and they seem to keep working. If it blows up, try changing it by smaller steps. The helical sweep tends to get touchy at some point.
For the more advanced users who like to look through these techniques, you will notice I started by threading a rod that is a little longer than the helical sweep profile. Because it didn't over-run the end, I was able to do a tangent/sharp edge in the sweep right on the surface. I also created a revolve cut to chamfer the ends right up to the minor diameter by using the pitch to control the chamfer sketch. The last trick was to let the spinal bend trim the excess from the end. The straight ends of the final part should still follow the original pitch setting. The "K" factor in this case is through the center (0.5). That is the only way to preserve the pitch without some much deeper math. A perimeter dimension in the spinal bend profile is held to the final rod length to remove any stretch or crush of the pitch in the straight end-segments where spinal bend can distort such features.
Attached is a Creo 2.0 full version of a parametric bent All-Thread. You can tweak the parameters in relations and all the features will update accordingly.
I have tested a few sizes and they seem to keep working. If it blows up, try changing it by smaller steps. The helical sweep tends to get touchy at some point.
For the more advanced users who like to look through these techniques, you will notice I started by threading a rod that is a little longer than the helical sweep profile. Because it didn't over-run the end, I was able to do a tangent/sharp edge in the sweep right on the surface. I also created a revolve cut to chamfer the ends right up to the minor diameter by using the pitch to control the chamfer sketch. The last trick was to let the spinal bend trim the excess from the end. The straight ends of the final part should still follow the original pitch setting. The "K" factor in this case is through the center (0.5). That is the only way to preserve the pitch without some much deeper math. A perimeter dimension in the spinal bend profile is held to the final rod length to remove any stretch or crush of the pitch in the straight end-segments where spinal bend can distort such features.
