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Sectional Slice of a 3D model assembly - with a specified view depth

david.penney00
Advocate

Sectional Slice of a 3D model assembly - with a specified view depth

david.penney00
Advocate
Advocate

Hi,

Many moons ago, when our company first started using AutoCAD for 3D models, we used to check ship's engine room pipe runs, by temporary slicing the engine room at certain positions with a specific view depth of about 1 m....

 

For instance every 2m (longitudinally) to the boat, we would "slice" the engine room and have a view depth of one metre.....and could see all sections of that engine room in that slice, especially the pipes, but not what went beyond one-metre depth. Fully able to get X-Y points of the pipes at each 'inspection' slice...etc.

As it's been so long, I would like to use this method to inspect a conveyor assembly cross-section at a specific point for a depth of 1 metre (so nothing is visible beyond that one metre)...I need to take exact measurements, but for the life of me, I can't fully remember the terminology or method used.

Also, the conveyor is rising 4.5 degrees and I need to be on a viewing plane perpendicular to the actual conveyor, not world UCS, if that makes sense.....as if I was looking directly along the conveyor...
Can anyone put me straight on how to achieve this....and I hope the above made some kind of sense.

Cheers.

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leeminardi
Mentor
Mentor

The first approach that comes to my mind is to create two large boxes that are 1m apart and aligned with the 4.5 degree incline.  Subtract the boxes from the full solid model and you will have a 1m slice. Will it be a problem if the subtract operation makes the resulting solid one object?

lee.minardi
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david.penney00
Advocate
Advocate

Hi,

 

I am not actually slicing the model arrangement, for a permanent section! It is purely for inspection/viewing purposes at any specific point on the conveyor assembly....similar to the Navisworks section plane, only using AutoCAD for a slice depth of 1 metre (approx) and also things can be measured much better than Navisworks because of the snaps, etc.....

 

Cheers.

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leeminardi
Mentor
Mentor

It's a bit awkward to use but try using a camera with the front and back clipping planes.

leeminardi_0-1657415748432.png

 

lee.minardi
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david.penney00
Advocate
Advocate

I will certainly give it a go tomorrow.......thanks!

How do you ensure that the camera view is perpendicular to the item's face? Do you align the UCS prior to using the camera?
This isn't familiar at all....apart from the viewing depth part.

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leeminardi
Mentor
Mentor

I do not believe that you can create a parallel projection for a camera view.

 

I think using dview may be better for your application.

 

Create a ucs with the xy plane at the desired 4.5° angle.

Invoke the dview command and select the geometry you want to analyze then [Enter]. Give the cl (clip) option then F (front) and adjust the slider that controls clipping as desired. Give the CL option again and then B (back) and adjust the slider again. you can zoom, use dist etc. in this view.

 

lee.minardi
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Michiel.Valcke
Advisor
Advisor

Have you tried using a sectionplane? You can make a slice with a certain thickness and you can draw your own section plane giving it an angle or position that suits best to your needs.

MichielValcke_0-1657534103554.png

MichielValcke_1-1657534118294.png
On the other hand, have you thought about using the AutoCAD Plant 3D toolset for your piping needs. It has a more intuitive Ortho generation functionality that allows you to us a 'viewbox' very similar to your section plane to generate views of 3D piping (including appendages, instruments or equipment) . The toolsets are separate software packages based on AutoCAD (and containing all) functionality. A license for AutoCAD full includes a license to use the toolsets.

It also contains spec functionality, iso & Bom generation.

MichielValcke_2-1657534328950.pngMichielValcke_3-1657534450641.png

 

 

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