helical groove which returns to origin

[stu-aspinall]

I want to create a groove around the internal bore of a component, for an oil groove, the drawing dimensions show the start and end points as the same, so a continuous loop, but the groove moves along a helical sweep to its position 180 degrees from start, then returns to the origin.  Ive been looking at curves from equations to create the sweep profile, but struggling.  Attached a pic of the groove.

[tbraxton]

Check out this previous thread for creating oil grooves.

Solved: FIGURE 8 OIL GROOVE - PTC Community

[tbraxton · Accepted solution]

If you want to use curve from equation functionality then this pic shows one approach. Generate a planar parametric curve using equation and then wrap it on the cylinder to get the sweep trajectory. You will likely need to use at least two sweep trajectories if there are intersections when you actually cut the solid. You will subdivide the wrapped trajectory curve so that it works as a valid sweep trajectory for two sweeps for the geometry shown here. There is also the issue of Creo splitting circles/cylinders so pay attention to that when wrapping the planar curve.

[kdirth]

Wrapping a curve would be the easiest way to create the path.

Measure the circumference, create a wrap using the measurement for the length, and sweep a cut.

[Patriot_1776]

It actually looks like it could simply be planar, and where the tilted plane intersects the inside cylinder wall, that's your trajectory.  Some bearings use more advanced grooves like others have shown, but from the picture you posted, it looks planar to me, just on a compound angle.

Best of luck!

[anursingh]

Hi @stu-aspinall,

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution. It will help other members who may have the same question.
Of course, if you have more to share on your issue, please pursue the conversation. 

Thanks,
Anurag