Sketcher ellispe that's not horizontal/vertical

[fred_roy]

Hi everyone,



Is there a way to create an ellipse in sketcher mode that is not in the
horizontal/vertical direction?



I'm not sure if that's clear or not... I hope so.



Thanks,



Jean-Frederic Roy, M.Eng

Sr. Mechanical Designer



SPIELO

Phone: 506.878.6460 <-- PLEASE NOTE NEW PHONE NUMBER

Fax: 506.852.7640

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[jnanesh.sajjan]

Hi Roy,



As I know, it is not possible, ellipses are basically controlled in X
and Y directions. I had similar case some months back. I tried in
several ways...by trimming them in to halves and rotating them by
required angle. But, ellipses or part of ellipse sections can be rotated
only by multiples of 90 degrees.



The way to handle this case is to create curve equation.



Thanks & Regards,



Jnanesha KS



T 91-80-4119 0900 Ext: 466

F 91-80-41190901
M 994 500 4179
-



www.quest-global.com

[jnanesh.sajjan]

There is another way, but leads to converting ellipse into a spline.



First create an ellipse on a dummy part and extrude it. Then, try to
create another sketch on part in angular position (angle=which you want)
and use "use edge" option and select ellipse. Save the sketch (.sec
file).

Exit the file (no need to save dummy part).



Open the actual file you are working, and after going to sketch mode,
use the existing ".sec" file. I know this is loooooooong route, perhaps
only the way!





Thanks & Regards,



Jnanesha KS

[dgschaefer]

The way to do this is to use a plane at an angel as your sketcher
reference plane. That way you control the hor/ver orientation.

Doug Schaefer

[lylebeidler]

My understanding is that this is not a mathematically exact ellipse, but you
can get very very very close by creating 4 conic sections

The crucial steps are that the conic sections are 90 degrees to the
centerlines, and entering the relation

Sqrt(2) - 1

(which is approximately = .414)



for the rho value for the arc (that's the dimension that looks like a
radius)











--



Lyle Beidler
MGS Inc
178 Muddy Creek Church Rd
Denver PA 17517
717-336-7528
Fax 717-336-0514
<">mailto:-> -
<">http://www.mgsincorporated.com>

[jnanesh.sajjan]

Roy, another idea:



First create a new datum plane that is at the x* rotation offset from
your current co-ord system, and normal to your desired sketch plane.
Then when creating the ellipse choose this new datum plane as the
left/right/top/bottom reference.





Thanks & Regards,



Jnanesha KS

[KevinAlexander]

Can you wait until Wildfire 5.0? 🙂

Cuz' it's in there as a dedicated icon!

[cid:image001.jpg@01C9FB1E.49DE35E0]







Best regards,






Kevin Alexander

Senior Application Engineer - TriStar, Inc.
TEL: 800-800-1714 x3118

CEL: 270-779-9935

www.tristar.com<">http://www.tristar.com>

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