topic Coordinate system of 2D sketch in Inventor Forum

Coordinate system of 2D sketch

Anonymous — Sun, 19 Jul 2020 08:41:38 GMT

Hi i am entering propellor sections into various workplanes that i created to eventually create a loft feature between them. However because i created these work planes at certain angles i need to redefine my sketch coordinate system to get al the sections to line up nicely.

I selected the edit sketch coordinate system in my 2D sketch and alligned the x axis with the original X axis. However when i allign the Y axis with the original y axis the whole thing flips again. Basically i get my X and Y axis ligned up but my Y axis is pointing in the opposite direction. The X axis is fine. Is there a way to change this? I added 2 pictures i want my X axis as in the first picture and my Y axis as in the second but i do not get this result in any way.

Kind regards,

Laurens

Re: Coordinate system of 2D sketch

johnsonshiue — Mon, 20 Jul 2020 21:49:18 GMT

Hi Laurens,

This is the way it works unfortunately. Inventor sketch coordinate (workplane) is determined based on the planar face it is created from. The coordinate can align to a linear edge, not necessarily one of the origin axes.

If you want consistent sketch coordinate orientation, you can create UCS and then create the sketch based on UCS XY plane.

Many thanks!

Re: Coordinate system of 2D sketch

Shawn1000 — Fri, 07 May 2021 15:30:13 GMT

What then is the purpose of the "flip axis" option?

Re: Coordinate system of 2D sketch

johnsonshiue — Fri, 07 May 2021 19:43:28 GMT

Hi Shawn,

"Flip Axis" allows you to flip it upside down.

Many thanks!

Re: Coordinate system of 2D sketch

Shawn1000 — Tue, 11 May 2021 10:11:03 GMT

Thanks Johnson