Newbie XYZ wrong way

Hi
When looking at the demos of Solidworks it always looks to me as if the XYZ is wrong the z points towards the user. The height of the component is on the y axis.
Is this right ?
AuldCAD


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X is X
Y is Y
Z is Z
Front, Right, and Left are arbitrary associations to X, Y, and Z.

SolidWorks is 3D. If you don't like what is pointing at you, rotate the
view.

Look up "Update Standard Views" in help if you want to change
orientation of the standard views.

 

Correct but actually the default view is different between some Surface
modelers and solid modelers, and animation packages. If I remember
correctly, it is Y up in SW and X up in Alias Studio Tools for example.
In studio tools, there is an option to change it, as it is annoying to
import a model from SW and have it in the wrong orientation.

Daniel

 

RHC with Z toward the user.
On a face Z is pointing out.
The front plane coordinate system defines the global coordinates.
That is about it.

 

I don't think there really is a standard. In the automotive world that we
deal in, X is across the vehicle, Y is front to back, Z is up.

WT

 

In the machining world X is accross, Y is away & Z is up & down. SW is
backwards in this sense. When importing into a CAM package, mastercam
for example, the part needs to be rotated bacause the the part comes in
with the solidworks Z turned to match Mastercam Z. The part comes in
rotated 90 deg. I don't know why solidworks had Y going up insted of
Z. It's a bit of a nuisance to me.

 

Right-hand rule in the US.
Left-hand in Europe IIRC.

It does make things interesting if you get ......

 

"No comment" <G>.

 

I suppose CAD is inspired by the drawing board (and math in front of a piece
of paper), X to the right, Y towards the top.

In the real world, that sheet of paper is the ground, and Z is elevation.

JM

 

A bit of a different question here...

Is there any way to switch models from RHC to LHC in SolidWorks?

 

Mirror?

 

Exactly. I have been in the machinist trade since 1973, and that's the way I
was always told. When 2004 came out and the xyz was wrong, I wrote them in
an enhancement request to make it changeable. And I wrote someone in SW and
they said I was basically wrong. Hmmmm.....you'd think that a large part of
their customers use the program to make machined parts, that they would make
it correctable....

Dan
www.swcad.com

 

If true, all you need to do is adjust the post(s), not rotate the
model. Any axis should be able to be mapped to any other
in the post. Just assure that you change two axes or you
will have problems <G>.

HTH

 

SW has never paid much attention to coordinate systems and for good
reason. It is supposed to be a parametric feature based modeler which
means that everything is located with respect to everything else and
not off a coordinate system.

To switch from RHC to LHC do you mean that all the Z+ dimensions become
Z- dimensions without changing the topology? If so SW cannot do this.

 

Just saw that there was another note on my part of this thread...

I've usually heard it as flip X but same difference...