Solidworks is a Solidworks plugin that
can be used to convert 3D scan data
into solid models in Solidworks.
The normal 3D scanning process
uses a 3D scanner like an Artec Eva or
Spider to generate point cloud data.
And then convert it into a 3D solid
that can be used normally like any
other SOLIDWORKS part
with a full feature tree.
Then we'll show the auto-surfacing
capabilities for more complex geometry,
and finally we'll look at a hybrid
method that combines these two techniques
for when we have a difficult geometry
with maybe one or two important surfaces,
like the hole on this bracket.
I'll start with some scan data of a simple part,
and many people might look at this and
see what seems like a SolidWorks part,
but taking a look at the edges,
we see that there are many thousands of
triangular surfaces in this STL file.
I need to highlight groups of these triangles,
and Geometrics for SolidWorks is going to try and fit
sketch data and features
to these triangles.
First,
asking for an extrusion,
I'll start highlighting groups of triangles.
I've got a lot of selection tools like Lasso or Paintbrush,
but at the end of the day,
I want to highlight the outside surfaces,
and the program is going to fit sketch data and
SolidWorks features to create this geometry.
Similarly,
I can extract this freeform surface from the top of the part.
Now I can create a new surface body,
or use this surface as a cut
right here in the menu.
My next extrusion
I'm going to do is going to be cutting material away from the part.
I want this next sketch
to be perfectly parallel to the bottom of the part,
so I can simply pick the reference plane and force that relationship.
As I continue on,
I can pick other extrusions or revolves,
or simple geometry like cylinders,
cones,
and spheres to fit two bits of my scan data,
as I continue to build up all of the features in this part.
A deviation analysis can show where my newly generated
solid body is close or far away from the original scan data,
like on this slot cut where the depth isn't quite right.
Quick edit to the features,
and that fixes that problem.
Now I've got a great solid body that I can
throw into an assembly or make modifications to.
However, not all
shapes are easy to parametrically model.
For something like this frog,
I might want to use the auto surface commands.
I've got a few simple options,
and then I simply let Geomagics for SolidWorks do the work for me,
fitting NURB surfaces, that's non-uniform
B splines,
all around the scan data to create a single solid body.
This can take a few moments,
but we need to keep in mind that the computer
is doing a lot of work for us right now.
My new geometry appears in the SolidWorks
feature tree as a single dummy solid,
made up of a patchwork of NURB surfaces.
Now we should acknowledge that this method is not
explicitly reserved for organic shapes like this.
There may be mechanical parts that I want to simply scan
and have the fastest path towards a
solid body that I can use in SolidWorks.
The hybrid method combines these tool sets
so that we can quickly generate a solid body,
but still have parametric features where we need them,
like on these mounting surfaces.
I've duplicated the scan data so that
I can use one copy to auto surface
and the other copy
to make parametric features of only the areas I care about,
these mounting holes.
I'm using some mesh
editing tools on my first copy to delete out that data,
and then I'm going to use Geomagics
for SolidWorks to fill those holes.
Now I can auto surface this body.
Auto surface generates the gross geometry for me,
and I can go back to the first copy
and use it to cut out these holes in a parametric way.
This way I get the best of both worlds.
A quick path to a completed solid body,
but I can still dimension and edit the locations of
these areas that I care about for mounting purposes.
I also get proper cylindrical holes here,
where otherwise I would have gotten
kind of a NURB surface that was close to,
but not exactly,
a cylinder.
If you're interested in learning more about Geomagics for SolidWorks,
or 3D scanning generally,
please reach out to your local Trimec representative.
Thank you.