Sweeping round a cylinder

[nickolas_w_myers]

Having a hard time adding another groove for an O-ring. every time I attach a circle to the last line and sweep it, it tells me there is an error. HELP 

[blandb]

Can you share your part?

[johnsonshiue]

Hi! I guess either the Sweep profile is not perpendicular to the circular path or the profile isn't located at 0 (where sketch positive X axis intersects the circle).

Please share the file here. The forum experts can help take a look to understand the behavior better.

Many thanks!

[CCarreiras]

Hi!

Just a tip:

To do that kind of part, use Revolve tool, and you can control all the part in one sketch and in one operation:

[nickolas_w_myers]

Here is the part

[blandb]

You can just create a sketch on a plane that runs down the middle of your shaft, and just draw a circle, or whatever shape is required, and revolve cut around the axis. There is no need for a 3D sketch to wrap a line around the cylinder. You could of placed all the geometry is a side profile sketch, and just revolved. If you do this, then you can't control grooves on/off if you are making an ipart or something out of it, but you could share the base sketch to multiple features, and just control all features with 1 sketch vs many sketches. Essentially this part could be made with 1 sketch and 1 revolve for shaft body, and X revolves for however many grooves you want.

[johnsonshiue]

Hi Nicolas,

Many thanks for sharing the file! Please tell me which profile and which path I need to use to see the Sweep failure.

Thanks again!

[Cris-Ideas]

Sweep usually gives this kind of error if you are trying to make a sweep that results in self intersecting body. 

This can be caused by relative position of profile and path, radiuses of the bends of the path, or simply trajectory of the path

As suggested by others Revolve is much more suitable to make features like oring grooves.

This approach allows you to easily and precisely control groove depth and position.

Cris.