cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Showing results for 
Search instead for 
Did you mean: 

Community Tip - Visit the PTCooler (the community lounge) to get to know your fellow community members and check out some of Dale's Friday Humor posts! X

Translate the entire conversation x

Creo - Cylinder Pattern with Tangent Points Illustrated in 3D Model.

RH_9641057
2-Explorer

Creo - Cylinder Pattern with Tangent Points Illustrated in 3D Model.

In Creo:  Goal to create 3d representation of the following.  Imagine 30 golf balls (2” dia) on a rope 100 feet in length.  Balls need to be evenly spaced out starting from one end of the rope with a distance of 3 feet apart.  The rope with balls to be wrapped around a cylinder 2 feet in diameter.  The difficult part is to illustrate the tangent points where both the balls and rope make contact (interface) with the cylinder it’s being wrapped around.  Note the height and diameter of the cylinder can change to adjust the number of balls on the rope.  The target it to make both the rope and balls tangent to cylinder at touch points.

7 REPLIES 7
tbraxton
22-Sapphire I
(To:RH_9641057)

Does the rope go through the center of the golf balls such that they are strung like beads? If so, it seems this construct would represent the placement of the spheres on the cylinder considering ideal geometry and structure with the rope under tension. I have not modeled all of the balls for expediency. This model is not to the scale in your description; it is a proof of concept for the modeling. The balls are tangent to the cylinder and the wound rope.

 

tbraxton_1-1747786198850.png

tbraxton_2-1747786258213.png

 

 

 

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric

Yes, the rope goes through the balls as you illustrated. The part that I have not been able to achieve is the tangency (touch points) for both the balls and the rope when wrapped around the cylinder. All other pitch and sizes are variables, primary goal is to illustrate the touch points. Greatly appreciated your attempting to solve this dilemma. Thanks!

tbraxton
22-Sapphire I
(To:RH_9641057)

These are the first 4 tangent points of the balls on the cylinder, you should be able to build datum features that also locate the tangent points of the balls to the rope as well. It requires some construction features (datums & possibly geometry) but I don't see why you would not be able to drop points on the model once the geometry is created. Clever use of patterns will speed up the creation of the points.

 

tbraxton_0-1747843907418.png

 

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric

Wonderful, thank you for the update. I can get the balls or the rope to be tangent individually. But not able to make both the rope and ball to be tangent at same time. With the large gap between of rope between balls, there would be a tangent point about midwat on the rope that would touch the cylinder as well. Visually, kind of a horizontal serpentine pattern that wraps around the cylinder. Where the ball is tangent, then mid-point of rope, then ball again.

Dale_Rosema
23-Emerald III
(To:RH_9641057)

If I am understanding your clarification, you want the rope to be taught between the spheres so that its edge is tangent with the cylinder.

Yes please and thank you so very much for trying to solve this. It has been something of a challenge to achieve. Much appreciated.

Hello @RH_9641057

 

It looks like you have some responses from our community champion. If any of these replies helped you solve your question please mark the appropriate reply as the Accepted Solution. 

Of course, if you have more to share on your issue, please let the Community know so other community members can continue to help you.

Thanks,
Vivek N.
Community Moderation Team.

Announcements

NEW Creo+ Topics: Real-time Collaboration

Top Tags