How would you do this type of protrusion?

Greetings:

I am having problem to create a protrusion like this one

(http://home.comcast.net/~wangphk/SolidWorks/Parts/wrap_around_protr1.jpg
Picture #2).
It is a hollow plastic enclosure 3mm thick all around and 6mm thick
toward the front and on the side due to the cosmetic protrusion. The
front has a draft feature of 3°.

If it doesn't take too much of your time, could someone give this a try
a send me (njchen24ATyahoo.com.sg please replace AT with @) your file
showing your technic?

Effectively, I try everything I can think off (Protrusion up to
surface, Sweep, Loft etc) and the results still have undesirable
imperfection such as additional curves/entities in the model
(http://home.comcast.net/~wangphk/SolidWorks/Parts/undesirable_imperfection..jpg).

1st approach:

Sketch profiles on the front and side plane
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr.jpg ),
seclect either sketch or select contour then extrude it toward the
offset surface
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_approach_surf_offset..jpg)
resuming in a failed features
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_ft_prot_failed.jpg,

http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_side_prot_failed..jpg)


2nd approach:

Sketch profiles on the front and side plane, protrude toward the front
(http://home.comcast.net/~wangphk/SolidWorks/Parts/2NDt_app_ft_prot.jpg)
and side face using "Offset from surface" end condition. Create a loft
feature for the round corner

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft.jpg).

This technic give a representation of my design intend; however, it has
some undesirable result due to 2 reasons:
- unable to apply colinear constraint between sketch #38 entities and
spline edge. Thus when the thickness of the
front protrusion changes, the loft sketch changes in an uncontrollable
way

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg.jpg).


- it is difficult to control the loft feature using the edges and
offset edges as guide curves. The mirror loft feature will be
sucessfull depending on the selection of these guide curves

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg2.jpg).

If anyone has a different idea or suggestion your help is greatly
appreciated.

 

What is it you are trying to do? Create another wall with some offset from
the inner part?

 

hi There,

1.Could you build it as a solid lump,
2. put the draft on the front,
3. then the fillets on the corners and then
4.shell the feature removing the rear, top and bottom faces and
5. select the varying wall thicknesses in the shell comand. Then
6.you could make the cuts last.

maybe.....

it's sunday evening so I'm not about to do it now, but let us know how you
get on!

Lee
Greetings:

I am having problem to create a protrusion like this one

(http://home.comcast.net/~wangphk/SolidWorks/Parts/wrap_around_protr1.jpg
Picture #2).
It is a hollow plastic enclosure 3mm thick all around and 6mm thick
toward the front and on the side due to the cosmetic protrusion. The
front has a draft feature of 3°.

If it doesn't take too much of your time, could someone give this a try
a send me (njchen24ATyahoo.com.sg please replace AT with @) your file
showing your technic?

Effectively, I try everything I can think off (Protrusion up to
surface, Sweep, Loft etc) and the results still have undesirable
imperfection such as additional curves/entities in the model
(http://home.comcast.net/~wangphk/SolidWorks/Parts/undesirable_imperfection.jpg).

1st approach:

Sketch profiles on the front and side plane
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr.jpg ),
seclect either sketch or select contour then extrude it toward the
offset surface
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_approach_surf_offset.jpg)
resuming in a failed features
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_ft_prot_failed.jpg,

http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_side_prot_failed.jpg)


2nd approach:

Sketch profiles on the front and side plane, protrude toward the front
(http://home.comcast.net/~wangphk/SolidWorks/Parts/2NDt_app_ft_prot.jpg)
and side face using "Offset from surface" end condition. Create a loft
feature for the round corner

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft.jpg).

This technic give a representation of my design intend; however, it has
some undesirable result due to 2 reasons:
- unable to apply colinear constraint between sketch #38 entities and
spline edge. Thus when the thickness of the
front protrusion changes, the loft sketch changes in an uncontrollable
way

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg.jpg).


- it is difficult to control the loft feature using the edges and
offset edges as guide curves. The mirror loft feature will be
sucessfull depending on the selection of these guide curves

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg2.jpg).

If anyone has a different idea or suggestion your help is greatly
appreciated.

 

Could you post a link to the model?
Most here (Me at least) would be more willing to take your model and try a
fix rather than build your model from scratch.

Muggs

Greetings:

I am having problem to create a protrusion like this one

(http://home.comcast.net/~wangphk/SolidWorks/Parts/wrap_around_protr1.jpg
Picture #2).
It is a hollow plastic enclosure 3mm thick all around and 6mm thick
toward the front and on the side due to the cosmetic protrusion. The
front has a draft feature of 3°.

If it doesn't take too much of your time, could someone give this a try
a send me (njchen24ATyahoo.com.sg please replace AT with @) your file
showing your technic?

Effectively, I try everything I can think off (Protrusion up to
surface, Sweep, Loft etc) and the results still have undesirable
imperfection such as additional curves/entities in the model
(http://home.comcast.net/~wangphk/SolidWorks/Parts/undesirable_imperfection.jpg).

1st approach:

Sketch profiles on the front and side plane
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr.jpg ),
seclect either sketch or select contour then extrude it toward the
offset surface
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_approach_surf_offset.jpg)
resuming in a failed features
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_ft_prot_failed.jpg,

http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_side_prot_failed.jpg)


2nd approach:

Sketch profiles on the front and side plane, protrude toward the front
(http://home.comcast.net/~wangphk/SolidWorks/Parts/2NDt_app_ft_prot.jpg)
and side face using "Offset from surface" end condition. Create a loft
feature for the round corner

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft.jpg).

This technic give a representation of my design intend; however, it has
some undesirable result due to 2 reasons:
- unable to apply colinear constraint between sketch #38 entities and
spline edge. Thus when the thickness of the
front protrusion changes, the loft sketch changes in an uncontrollable
way

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg.jpg).


- it is difficult to control the loft feature using the edges and
offset edges as guide curves. The mirror loft feature will be
sucessfull depending on the selection of these guide curves

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirable_resultjpg2.jpg).

If anyone has a different idea or suggestion your help is greatly
appreciated.

 

I am having problem to create a protrusion like this one

(http://home.comcast.net/~wangphk/SolidWorks/Parts/wrap_around_protr1.jpg
Picture #2).
It is a hollow plastic enclosure 3mm thick all around and 6mm thick
toward the front and on the side due to the cosmetic protrusion. The
front has a draft feature of 3°.


Before you figure out how to make the model, I would suggest that you change
the shape of your part. A plastic part with 6 mm and 3 mm thick walls is
going to give you a lot of problems when you try to mold it. If you can make
the walls a consistent 3 mm thick your molder will be much happier. So will
your QA and purchasing departments.


Jerry Steiger
Tripod Data Systems
"take the garbage out, dear"

 

Sketch profiles on the front and side plane
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr.jpg ),
seclect either sketch or select contour then extrude it toward the
offset surface
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_approach_surf_offset.
jpg)
resuming in a failed features
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_ft_prot_failed.j
pg,

http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_side_prot_failed.jpg)


You probably need to make your offset surfaces larger, so that the sketches
for the projections are completely contained within the surfaces.


Jerry Steiger
Tripod Data Systems
"take the garbage out, dear"

 

Starting from scratch, and assuming that the geoemtery is right, I would
make the inner box jsut like youahve it, offset its surface, use simple,
oversized extrudes (that extend well to the outside of the offset surface)
to get the shapes for the tops of the add on pieces, then 'Cut with the
offset surface' to trim to the final shape.

To add the required feature to the model you have, I would likely just loft
them... a profile to the correct shape on the bottom (remember to intersect
the solid, don't make it line to line), a profile to the correct shape on a
plane for the plateau (probably have to use 'pierce' or, better yet - an
inrtersection curve converted to construction lines - to get the upper
profile to match the adjacent wall, and remember to avoid line-to-line on
the side that contacts the rest of the model), then loft them together.
It looks like you *might* have tried to loft from the right side to the
front side, perhaps using a guide curve, and of course that would be a
disaster. The other source of the problem you show *might* be failing to
account for the fact that the rounded edge ought to be elliptical because of
the way the curved face angles back relative to the top and bottom of the
new feature - no, scratch that, I'm sure you know that an angled
itnersection of a cylinder is an ellipse, but I am working blind here and
can only guess (and it starts to explain some of what I see)

The two suggestions make the following assumptions: planar, drafted faces,
and regular fillets.

Hope this helps - if not, a model will be necessary for anything further
-Ed

Greetings:

I am having problem to create a protrusion like this one

(http://home.comcast.net/~wangphk/SolidWorks/Parts/wrap_around_protr1.jpg
Picture #2).
It is a hollow plastic enclosure 3mm thick all around and 6mm thick
toward the front and on the side due to the cosmetic protrusion. The
front has a draft feature of 3°.

If it doesn't take too much of your time, could someone give this a try
a send me (njchen24ATyahoo.com.sg please replace AT with @) your file
showing your technic?

Effectively, I try everything I can think off (Protrusion up to
surface, Sweep, Loft etc) and the results still have undesirable
imperfection such as additional curves/entities in the model
(http://home.comcast.net/~wangphk/SolidWorks/Parts/undesirable_imperfection.
jpg).

1st approach:

Sketch profiles on the front and side plane
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr.jpg ),
seclect either sketch or select contour then extrude it toward the
offset surface
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_approach_surf_offset.
jpg)
resuming in a failed features
(http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_ft_prot_failed.j
pg,

http://home.comcast.net/~wangphk/SolidWorks/Parts/1st_appr_side_prot_failed.jpg)


2nd approach:

Sketch profiles on the front and side plane, protrude toward the front
(http://home.comcast.net/~wangphk/SolidWorks/Parts/2NDt_app_ft_prot.jpg)
and side face using "Offset from surface" end condition. Create a loft
feature for the round corner

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft.jpg).

This technic give a representation of my design intend; however, it has
some undesirable result due to 2 reasons:
- unable to apply colinear constraint between sketch #38 entities and
spline edge. Thus when the thickness of the
front protrusion changes, the loft sketch changes in an uncontrollable
way

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirabl
e_resultjpg.jpg).


- it is difficult to control the loft feature using the edges and
offset edges as guide curves. The mirror loft feature will be
sucessfull depending on the selection of these guide curves

(http://home.comcast.net/~wangphk/SolidWorks/Parts/2nd_appr_loft._undesirabl
e_resultjpg2.jpg).

If anyone has a different idea or suggestion your help is greatly
appreciated.

 

Thank you all for your suggestion and help.

Hang tight everyone, I will host the part file as soon as I figure out
how to do it.

Jerry: The part is already molded but I am unable to model it on the
computer. Argh! I am so vexed and frustrated.

 

Here is the link for the file that we have been discussed about.
Please let me know if you have a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thank you for your time and help.

 

please d/l my part and see if you can come up with a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thanks

 

please d/l my part and see if you can come up with a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thanks

 

please d/l my part and see if you can come up with a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thanks

 

please d/l my part and see if you can come up with a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thanks

 

please d/l my part and see if you can come up with a better approach.

http://home.comcast.net/~wangphk/SolidWorks/Parts/STATION-DLFNNLDR-6G.zip
Thanks

 

Try this.

http://home.comcast.net/~muggs828/solidworks/First_Try.SLDPRT

It's not perfect but pretty close.
I did this pretty fast, so CHECK ALL of my dimensions.

Let me know if this is OK,
Muggs

 

I presume you don't want that small triangular face around the front corner
and the odd fillet?
presently you have used the bases geometry as a reference for the loft but
that does not take into account the draft.
what I did was to use a loft between end profiles sketched on the swept boss
faces and a guide curve referenced to the base- this made a nice continuous
outside
then I picked my fillet sections one by one rather than use the tangent
propagation.
because of this change there were some other minor things to update
if you like I will email it back to you
neil

 

Two possible ways but it needs more work imo cus the shell macs it up.

http://www.zxys.com/misc/STATION-DLFNNLDR-6G-zxys.zip

...

 

Yo! njchen. How 'bout a little feedback!
Did it work for you? Is it what you wanted? Is it crap?

Muggs

 

Thank you all for your help.

I have been sicked lately and haven't been able to do any computing
work. I will d/l you models today and will keep you inform ASAP.

 

Yeah, I've been sick as well.
I should have figured as much. Sorry for the pseudo flame.

Muggs