FreeCAD/C3/Introduction-to-Part-Design-Workbench/English-timed

Introduction to Part Design Workbench-English

Time	Narration
0:00	Welcome to this Spoken Tutorial on Introduction to Part Design Workbench.
0:06	In this tutorial, we will learn to,
0:10	Draw basic shapes.
0:11	Use basic constrains.
0:14	Draw the Flange Coupling component in 3D.
0:17	To record this tutorial, I am using,
0:20	Windows 11 OS and
0:22	FreeCAD version 0.21.2
0:26	To follow this tutorial,
0:28	Learners must be familiar with the FreeCAD interface.
0:33	For the prerequisite tutorials, please visit this site.
0:38	Let us now learn about Part design workbench.
0:41	This workbench provides tools for creating 3 dimensional solid objects.
0:47	Using this workbench it is possible to design precise 3D mechanical parts.
0:53	The Part design is intrinsically related to the Sketcher workbench.
0:59	The Sketcher workbench is used to create 2 dimensional geometries for use in Part design.
01:05	Let us open FreeCAD.
01:09	I will open a new file.
01:11	I have selected the Part Design workbench.
01:15	In the Tasks menu, under Start Part click on Create body.
01:22	A new Body needs to be created to draw a sketch.
01:25	Now under Start Body, click on Create sketch.
01:30	This creates a sketch view where you can draw the components.
01:34	On the panel we can see three planes in 3 mutually perpendicular directions.
01:41	In the Combo View under Select feature three planes are shown.
01:47	Select XY-plane in the Combo View.
01:50	This denotes the top view.
01:53	Click the OK button to select the plane.
01:56	Observe that new tools are shown on the toolbar.
02:00	Now let us draw a vertical line from the x-axis.
02:05	Select the Create line tool from the tool bar.
02:08	Place the cursor on the x-axis line.
02:12	You can see that the x-axis line changes to yellow.
02:17	You can see that a Constrain point onto object symbol appears near the cursor.
02:22	It denotes that the point is fixed to the line.
02:27	Now click on the line to start drawing it.
02:30	Drag the mouse vertically upwards to draw a vertical line.
02:36	You can see a Vertical constrain symbol appearing near the cursor.
02:40	It represents the line drawn vertically.
02:43	Left click to complete the drawing of the line.
02:46	Now let us draw a horizontal line along the x-axis.
02:52	Make sure that the Create line tool is selected.
02:55	You can check that by seeing the symbol near the cursor.
02:59	Place the cursor on the line.
03:01	You can see the Constraint Point onto object symbol near the cursor.
03:06	Click and drag the cursor horizontally to draw a horizontal line.
03:11	Now you can see two symbols appearing near the cursor.
03:16	Constrain point onto object symbol and Constrain horizontal symbol.
03:21	We don’t want two Constraint point onto objects.
03:25	This means that the line is fixed at two points to the same object.
03:30	Upon clicking, you can see that the entire drawing has turned to red.
03:35	To clear that, click on any one of the constraints.
03:39	Press the Delete key on your keyboard to delete the constrain.
03:44	Now you can see that the drawing came back to normal.
03:47	Let us avoid the appearance of the Constrain Point Onto Object symbol twice.
03:52	To do this, let’s draw a line below the x-axis.
03:57	To deselect the tools, right-click on the panel.
04:00	Or press the Escape key to deselect the tools.
04:05	Now let us draw an arc.
04:08	Select the Create arc tool from the tool bar.
04:11	Place the cursor on the top end of the vertical line.
04:15	You can see that a X-Shaped symbol appears near the cursor.
04:20	It is the Constrain coincidence.
04:23	It denotes that the cursor is at the top of the end point.
04:28	Now left click and drag the cursor to left or right.
04:33	You can see a model circle that can be drawn.
04:37	Click to release the model circle.
04:40	Drag the cursor to start drawing the arc.
04:44	Left click again to finish the arc.
04:47	Now let us draw a circle.
04:50	Select the Create circle tool.
04:53	Place the cursor at the end of the horizontal line.
04:57	Check for the X-Symbol.
05:00	Left click and drag the cursor to draw the circle.
05:04	Once the definite size is visible, left click to finish the circle.
05:10	Observe that, we have drawn these shapes with no dimensions.
05:15	Let us assign some values to them.
05:18	Let us select the vertical line.
05:21	Select the Constrain vertical distance tool from the tool bar.
05:26	Insert length pop up appears.
05:29	In the Length field type 30 mm and click the OK button.
05:36	You can see that a dimension is applied to that line.
05:39	Now select the horizontal line and click the Constrain horizontal distance tool.
05:46	Insert length pop up appears.
05:50	In the Length field type 30 millimetre and click the OK button.
05:55	Now to set the radius of the arc, select the arc.
06:00	Select the arrow near the Constrain arc or circle tool.
06:06	In the drop down select Constrain radius.
06:09	Insert radius pop up appears.
06:12	In the Radius field type 10 mm and click OK.
06:17	Now let us give the dimensions to the circle.
06:21	To set the radius for the circle, select the circle.
06:26	Select Constrain radius.
06:29	Insert radius pop up appears.
06:32	In the Radius field type 20 mm and click OK.
06:37	In the Combo View click on the Close button to complete the sketch
06:42	Now let us use the tools to draw a Flange coupling.
06:47	Now I will open a new file.
06:50	We can select the Create body tool from the toolbar.
06:54	Then select Create sketch.
06:58	Select XY-plane and click OK.
07:03	Now let us draw two circles.
07:07	Select the Create circle tool and place the cursor on the x-axis.
07:12	You can see that line changes to yellow color.
07:16	You can see that Constrain point onto object symbol appears near the cursor.
07:22	Now click on the line to draw a circle.
07:26	Repeat the process on the other side of the x axis.
07:30	Now right click the mouse to deselect the tool.
07:34	Select the center of any one of the circles and the midpoint of the plane.
07:40	Once the points are selected they turn to green color.
07:44	Click Constrain Horizontal Distance tool.
07:47	In the Insert length dialog box, type the length as 100 millimetre and click OK.
07:55	Select the centers of both the circles and click Constrain Horizontal Distance tool.
08:02	Change the length to 200 mm.
08:06	Let us move the drawing to a convenient place to see it clearly.
08:11	Press and hold the middle mouse button to see the move cursor.
08:16	Move the mouse and place the drawing at a convenient location.
08:21	Now select the Create arc tool.
08:25	Place the cursor on the center of the circle.
08:29	You can see that midpoint changes to yellow color.
08:33	An X-shaped symbol appears near the cursor.
08:37	This denotes that the cursor is at the midpoint of the circle.
08:42	Now click on the midpoint and draw a semicircle from bottom to up.
08:48	Repeat the same process on the other side.
08:52	Let’s draw two more arcs above and below the plane from center of the plane.
08:59	Now, select the Line tool and connect all the arcs.
09:05	Make sure to click only when the X-symbol is visible.
09:10	Now select a line and the arc and select the Constraint Tangent tool.
09:16	This makes the connection between the arc and line smooth .
09:20	Repeat this process for the arcs and lines at four points to make them smoother.
09:28	Now select the top arc and click Constraint radius tool
09:34	Set the radius to 75 mm.
09:38	Let us change the radius for the bottom arc also.
09:44	Now select both the circles and click Constraint radius tool.
09:50	Change the radius to 10 mm.
09:55	Select the arcs around the circles and change the radius to 30 mm.
10:02	Click Close in the Combo view.
10:04	You will exit the sketch view
10:06	Now select the Top view from the Gizmo.
10:11	Select the Pad tool from the tool bar.
10:15	You can see that the sketch will turn into a 3D object.
10:19	In the Combo view change the length to 20 mm.
10:24	This will increase the thickness of the drawing making it 3 dimensional.
10:28	Then click the OK button.
10:31	Let us rotate the drawing.
10:33	Press and hold the middle mouse button.
10:36	Right click and move the mouse.
10:39	Or you can change the view using the gizmo.
10:44	Again click Create sketch.
10:48	Then click XY-plane.
10:51	Click the OK button.
10:55	Select the View section tool to clearly see all the points.
10:59	Now draw a circle from the center of the plane.
11:05	Set the radius to 50 mm.
11:09	Click the Close button.
11:12	Go to the Model tab in the Combo view.
11:15	Select the sketch if not already selected.
11:19	Now select the Pocket tool from the tool bar.
11:23	Pocket tool is used to create holes in already existing drawings.
11:28	In the Combo view, change the length to 20 mm.
11:33	Tick the Reversed check box.
11:36	Click the OK button.
11:39	Now change the view to front using the gizmo or from the tool bar.
11:45	The 3D component is ready.
11:48	Now let us Save the file with an appropriate name.
11:54	With this we come to the end of this tutorial.
11:58	Let us summarize.
12:00	In this tutorial, we have learnt to,
12:03	Draw basic shapes.
12:05	Use basic constrains.
12:07	Draw the Flange Coupling component in 3D.
12:11	For the assignment activity, please do the following:
12:14	Practice to draw different shapes.
12:17	Practice pad and pocket tool.
12:21	This video summarizes the spoken tutorial project.
12:24	Please download and watch it.
12:27	We conduct workshops using spoken tutorials and give certificates.
12:32	Please write to us.
12:34	Please post your timed queries in this forum.
12:37	Spoken tutorial project was established by the ministry of education government of India.
12:44	This tutorial is contributed by Dr. Sathiya Narayanan and K.Sakthivel.
12:49	Thank you for joining.

Contributors and Content Editors

Madhurig