Osdag/C3/Handling-3D-models-and-CAD-in-Osdag/English
Title of the script: Handling 3D models and CAD in Osdag
Author: Zahran Sajid (script), Anandajith TS (recording)
Keywords: Osdag, CAD, CAD Model, FreeCAD, video tutorial
Outline:
- Sample design example
- Visualise the 3D CAD model
- Hande the 3D CAD model: Zoom, Pan and Rotate
- Reference axis of CAD in Osdag
- 2D views of the CAD model: Front View, Side View and Top View
- Individual components of the 3D CAD model
- CAD file formats in Osdag
- Save the generated 3D CAD model
- Create a new FreeCAD Document
- Import the 3D CAD model in FreeCAD
Visual Cue | Narration |
Slide: Title Slide | Welcome to the spoken tutorial on ‘Handling 3D models and CAD in Osdag’ |
Slide: Learning Objectives | In this tutorial, we will learn to,
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Slide: System Requirement | To record this tutorial, I am using
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Slide: Pre-requisites
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To follow this tutorial you should have
The prerequisite tutorials are available on this website |
Slide: Code Files |
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Point to the home page of the Tension Member Design >> Select Bolted to End Gusset module. | Let us switch to the home page of the Tension Member Design.
Select Bolted to End Gusset module. Click on Start. |
Click on File -> Load Input and select 3Dmodel-sample-design.OSI
Click on the Design button Click on the disable Input Dock and Output Dock buttons
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Click on File -> Load Input
Select 3Dmodel-sample-design.OSI
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Osdag:
Point towards the CAD window and the Log messages window |
We see the CAD model and log messages as the design is successful. |
Osdag:
Point towards the 3D CAD model |
Osdag provides a 3D CAD model for a better visualisation of the designed component. |
CAD window:
Press the left mouse button and move the mouse sideways |
Rotate the CAD model by pressing the left mouse button moving it sideways. |
Only narration | This allows us to view the model from any side in detail. |
CAD window:
Scroll the mouse wheel up two times |
Zoom in the CAD model by scrolling up the mouse wheel. |
CAD window:
Press the mouse wheel to see a 4 sided- arrow. Press and hold the mouse wheel and Drag the mouse to the right or left. |
Pan the CAD model by pressing the wheel on the mouse and moving it sideways. |
Only narration | This allows us to view each component of the model in detail. |
CAD window:
Press the mouse wheel to see a 4 sided- arrow. Press and hold the mouse wheel and Drag the mouse to the right or left.
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Again, press the wheel on the mouse and move it sideways to get back to the previous view. |
CAD window:
Scroll the mouse wheel down two times |
Similarly, zoom out the CAD model by scrolling down the mouse wheel. |
CAD window:
Point toward the global axis |
The orientation of the CAD model in the global axis can be noted from the reference axis below. |
CAD window:
Point toward the global axis at the bottom right corner. |
The X, Y and Z axis are marked and colour coded for a quick reference. |
Point toward the Front View, Side View and the Top View shortcut buttons | The 2D view shortcut buttons are present above the CAD window.
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Click on the Front View button | To see the front view, click on the Front View shortcut button. |
Point to the view using the cursor. |
We see the front view and it is oriented along the XZ direction of the global axis. |
Click on the Side View button | Now, to see the side view, click on the Side View shortcut button. |
Point to the view using the cursor. |
We see the side view and it is oriented along the YZ direction of the global axis. |
Click on the Top View button | Similarly, to see the top view, click on the Top View shortcut button. |
Point to the view using the cursor. |
We see the top view and it is oriented along the XY direction of the global axis. |
Point toward the Member, Plate and Endplate buttons | We can isolate and view the individual components of the 3D CAD model.
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Click on the Member button. | To isolate and view the member, click on the Member button. |
CAD window:
Point toward the CAD model |
We see an isolated CAD model of the member. |
Click on the Plate button | Now, to view the plate, click on the Plate button. |
CAD window:
Point toward the CAD model |
We see an isolated CAD model of the gusset and intermittent connection plates with bolts. |
Click on the Endplate button | Similarly, to view the end plate, click on the Endplate button. |
CAD window:
Point toward the CAD model |
We see an isolated CAD model of the gusset plate with bolts. |
Rotate, Pan and Zoom the component | We can Rotate, Pan or Zoom the individual components as well. |
Click on the Model button | I will click on the Model button to return to the default view of the model. |
Click on the Graphics menu | Alternately, we can perform all of the above actions using the Graphics menu |
Only Narration | However, it is recommended to use the mouse and checkboxes |
Only Narration | Osdag allows to save the 3D CAD model in various standard CAD file formats.
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Only Narration | Thus allowing us to perform various post-processing activities. |
Only Narration | Let us save the 3D CAD model for this module. |
Bolted to End Gusset GUI:
Click on File>> Save 3D model |
To save the generated CAD model, click on the File menu present at the top left corner.
And, click on the Save 3D model from the list. |
Export Window:
Point toward the Export Window |
The Export Window will open. |
Export Window:
Point toward the Save as type dropdown |
We see the Save as type dropdown below.
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Export Window:
Click on Save as type dropdown list |
Click on the Save as type dropdown list to expand it. |
Save as type dropdown list:
Point toward the list |
We can see the available file formats, these are:
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Only narration | Let us try to save the model in the IGS file format. |
Save as type dropdown list:
Click on the IGS option |
Select and click on IGS to choose it. |
Only narration | Let us now specify a suitable file name. |
Point toward the File name textbox | This can be done by typing the file name in the File name textbox. |
File name textbox:
Type Tension-member-bolted |
I will name the file as Tension-member-bolted.
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Only narration | Let us now choose a suitable directory to save the file. |
Export Window:
Choose Osdag-workspace directory |
I will choose the Osdag hyphen workspace directory to save the model.
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Export Window:
Click on Save |
Click on the Save button to save the model. |
Information pop-up:
Point toward Information pop-up |
A confirmation message will be displayed once the model is successfully saved. |
Information pop-up:
Click on Ok |
Click on Ok to acknowledge. |
Only narration | Let us now import the CAD model and do some post-processing. |
Only narration | For this, I will use FreeCAD.
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FreeCAD GUI: | I have opened FreeCAD. |
FreeCAD GUI:
Click on File>> New |
Go to the File menu present at the top left corner, and select New. |
Only Narration | A new FreeCAD application window will open.
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FreeCAD GUI:
Click on File>> Import |
Go to the File menu present at the top left corner, and select Import. |
Import File Window:
Navigate to Osdag_workspace directory |
Click once on the Osdag hyphen workspace directory where I have saved the model. |
Import File Window:
Click on Tension_member_bolted.igs |
Click once on the Tension hyphen member hyphen bolted dot igs file to select it. |
Import File Window:
Click on Open |
And, click on the Open button below. |
Only narration
Point to the model. |
We see the CAD model in FreeCAD. |
FreeCAD GUI:
Click on Front Button |
Click on the Front View Button present in the toolbar on top of the 3D view window. |
Only narration | We see the front view of the model. |
FreeCAD GUI:
Click on Top Button |
Similarly, click on the Top View Button present next to the Front View Button. |
Only narration | We see the top view of the model. |
FreeCAD GUI:
Click on Right Button |
Next, click on the Right View Button present next to the Front View Button. |
Only narration | We see the right side view of the model. |
Only narration | Let us measure the dimension of the section using the Measure distance tool. |
FreeCAD GUI:
Scroll up using the scroll wheel |
Zoom in on the section by scrolling up on the mouse wheel. |
FreeCAD GUI:
Press the middle mouse button and move the mouse sideways |
Pan the model mouse by pressing the middle mouse button and moving it. |
FreeCAD GUI:
Click on Measure distance tool |
Select the measure distance tool from the toolbar above the 3D view of the model. |
FreeCAD GUI:
Click on top and bottom outer edges of the section on the right |
While having the measure distance tool active click on the outer edges of the section on the right. |
FreeCAD GUI:
Point to distance value next to section |
We can see that the depth of the section is measured to be 125 millimetres for LC 125. |
Only narration | We have measured the depth of the section using FreeCAD’s measuring tool. |
Only narration | This brings us to the end of this tutorial.
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Slide: Summary
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In this tutorial, we have
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Slide: Assignment | As an assignment, do the following
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Slide: About Spoken Tutorial Project | The video at the following link summarises the Spoken Tutorial Project.
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Slide:Spoken Tutorial Workshops | The Spoken Tutorial Project team conducts workshops and gives certificates.
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Slide:Answers for THIS Spoken Tutorial | Please post your timed queries in this forum. |
Slide: FOSSEE Forum | For any general or technical questions on Osdag, visit the FOSSEE forum and post your question. |
Slide: Sample Design Examples
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https://osdag.fossee.in/resources/sample-design
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Slide: Acknowledgements | The Spoken Tutorial project is funded by the Ministry of Education, Government of India. |
Slide: Thank you | This is Anandajith TS,FOSSEE, IIT Bombay signing off.
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