How do you make a cut on a tube?

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1

Hello

I have this little lamp to model with SolidWorks but I don't know how to make cuts on curved surfaces.

Thank you in advance for your help.

Francis


lp01.jpg
3 Likes
2

Look at your lamp and imagine that there are no cutouts. Now regade the lamp + the cutouts is imagime the shape that pierces the lamp to make this cut.

so in 1=> you have a tube 

en2=> in side view you have a banana shape  that pierces the tube 

draw a tube, in side view draw the banana and then do a subtraction.

may the force be with you.

 

 

9 Likes
3

Hello

Same as Obi Wan

To see, the photo, you can  subtract in sketch by the middle plane.

Otherwise you would have to add planes on the face of the cylinder. sketch and subtract.

The most "complicated" thing is to draw "bananas" neatly.

See attached file.

Christopher


lampe_demo.sldprt
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4

Like my colleagues 

your lamp is symmetrical 

so put yourself on the plane of symmetry Once the tube is created 

create a sketch a large rectangle that encompasses your whole room you create an offset towards the outside of this rectangle at x MM 

Then you take the ellipse sketch tool that you place on both sides at the right angle and side  

it's up to you to cut up everything that is useless

you'll end up with a full shape, a cutout imprint

All you have to do is remove the material in both directions

and your piece is finished here

@+;-)

 

4 Likes
5

Thank you but I can't open the file, I have a 2016 version...

6

gift.

may the force be with you.


Part1.SLDPRT
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7

Here is an approach to your room according to my descriptions 

and the SW 2012 attachment

you have to make the adjustments of the sides and adjustments ;-)

@+ ;-)


decoupe_sur_tube_pmipmi.sldprt
5 Likes
8

Nice design :-)

9

Hello

Thank you for your answers,

Meci to OBI WAN and GT22 for the explanations and the part!

I have another question:

Is it possible to draw a sketch on a tube or a surface that is not flat?

Thank you.

Francis.

 

10

Yes, with a 3D sketch to draw directly

or

With the Winding function to "wind" a 2D sketch on your surface cf attachment


comment_faire_une_decoupe_sur_un_tube.sldprt
4 Likes
11

Hello

I made a little tutorial on the projection of entities, it may be useful to you. ; )

http://www.lynkoa.com/tutos/projections-dentit%C3%A9s