Difference between revisions of "FreeCAD/C3/Introduction-to-Part-Design-Workbench/English"

Title slide

Learning Objectives

• Draw basic shapes.
• Use basic constrains.
• Draw the Flange Coupling component in 3D.

System Requirements

• Windows 11 OS and
• FreeCAD version 0.21.2

Prerequisites

https://spoken-tutorial.org

• Learners must be familiar with the FreeCAD interface.
• For the prerequisite tutorials, please visit this site.

Part Design Workbench

This workbench provides tools for creating 3 dimensional solid objects.

Using this workbench it is possible to design precise 3D mechanical parts.

Part Design Workbench

The sketcher workbench is used to create 2 dimensional geometries for use in Part design.

Select File and New to open the new file.

Click on the Start dropdown.

Select the PartDesign workbench from the drop down.

I will open a new file.

I have selected the Part Design workbench.

A new Body needs to be created to draw a sketch.

This creates a sketch view where you can draw the components.

In the Combo View.

Point to the planes under Select feature.

In the Combo View under Select feature three planes are shown.

Click on OK.

This denotes the top view.

Click the OK button to select the plane.

Select Create line tool.

Select the Create line tool from the tool bar.

Place the cursor on the x-axis.

Point to the Constrain point onto object symbol.

Point to the x-axis.

You can see that the x-axis line changes to yellow.

You can see that a Constrain point onto object symbol appears near the cursor.

It denotes that the point is fixed to the line.

Left click again.

Point to the constraint.

Left click to complete drawing the line.

Drag the mouse vertically upwards to draw a vertical line.

You can see a Vertical constrain symbol appearing near the cursor.

It represents the line drawn vertically.

Left click to complete the drawing of the line.

(point to the symbol while editing)

Make sure that the Create line tool is selected.

You can check that by seeing the symbol near the cursor.

Point to Constrain point onto object symbol.

You can see the Constraint Point onto object symbol near the cursor.

Now you can see two symbols appearing near the cursor.

Constrain point onto object symbol and Constrain horizontal symbol.

Select the constrain.

Click to see the red line.

This means that the line is fixed at two points to the same object.

Upon clicking, you can see that the entire drawing has turned to red.

Press the Delete key on the keyboard.

Press the Delete key on your keyboard to delete the constrain.

Place the cursor on the x-axis and click and drag the cursor.

Place the cursor slightly lower than the x-axis and left click.

To do this, let’s draw a line below the x-axis.

Press Esc key.

Or press the Escape key to deselect the tools.

Place the cursor at the top of the vertical line.

Place the cursor on the top end of the vertical line.

You can see that a X-Shaped symbol appears near the cursor.

It is the Constrain coincidence.

It denotes that the cursor is at the top of the end point.

Left click and drag the cursor to the left.

Drag the cursor to draw.

Left click on the mouse.

You can see a model circle that can be drawn.

Click to release the model circle.

Drag the cursor to start drawing the arc.

Left click again to finish the arc.

Place the cursor on the end of the horizontal line.

Left click and drag the cursor.

Left click again.

Left click to finish the circle.

Select the Create circle tool.

Place the cursor at the end of the horizontal line.

Check for the X-Symbol.

Left click and drag the cursor to draw the circle.

Once the definite size is visible, left click to finish the circle.

Let us assign some values to them.

Select Constrain vertical distance tool.

Fill the Length field as 30 mm.

Select the Constrain vertical distance tool from the tool bar.

Insert length pop up appears.

In the Length field type 30 mm and click the OK button.

Select Constrain horizontal distance tool.

Fill the Length field as 30 mm.

Insert length pop up appears.

In the Length field type 30 millimetre and click the OK button.

Select the arrow near the Constrain arc or circle tool.

In the drop down select Constrain radius.

Fill the Radius field as 10 mm.

Select the arrow near the Constrain arc or circle tool.

In the drop down select Constrain radius.

Insert radius pop up appears.

In the Radius field type 10 mm and click OK.

Select the arrow near the Constrain arc or circle tool.

In the drop down select Constrain radius.

Select the arrow near the Constrain arc or circle tool.

In the drop down select Constrain radius.

Click OK.

In the Radius field type 20 mm and click OK.

Industrial Drawing

modeldrawing.png

Click Create sketch.

Select XY-plane (base plane) in the Combo View.

Click on OK.

Then select Create sketch.

Select XY-plane and click OK.

Place the cursor in the horizontal line on the left side.

Select the Create circle tool and place the cursor on the x-axis.

You can see that line changes to a yellow color.

You can see that Constrain point onto object symbol appears near the cursor.

Select Constrain Horizontal Distance tool.

Once the points are selected they turn to green color.

Click Constrain Horizontal Distance tool.

Click OK.

OK.

Select Constrain Horizontal Distance tool.

In the length field type 200 in the dialog box.

Click OK.

Change the length to 200 mm.

(look for the four sided- move cursor)

Press and hold the middle mouse button to see the move cursor.

Move the mouse and place the drawing at a convenient location.

You can see that midpoint changes to yellow color.

An X-shaped symbol appears near the cursor.

This denotes that the cursor is at the midpoint of the circle.

Semi-circle should be on the left of the circle

Semi-circle should be on the right of the circle.

>> draw one arc at the top and another at the bottom.

Join all the arcs one by one.

Make sure to click only when the X-symbol is visible.

Select the Constrain Tangent tool.

This makes the connection between the arc and line smooth .

Select the Constraint Tangent tool.

Click the arrow near the Constrain arc tool.

Click Constrain radius tool.

In the radius field type 75 in the dialog box.

Click on OK.

Click the arrow near the Constraint arc tool.

In the drop down select Constraint radius.

Set the radius to 75 mm.

In the radius field type 75 in the dialog box.

Click on OK.

Click Constrain radius tool.

In the radius field type 10 in the dialog box.

Click on OK.

Change the radius to 10 mm.

Click Constrain radius tool.

In the radius field type 30 in the dialog box.

Click on OK.

You will exit the sketch view

Click on OK.

This will increase the thickness of the drawing making it 3 dimensional.

Then click the OK button.

Press and hold the middle mouse button.

Right click and move the mouse.

Or you can change the view using the gizmo.

Select XY-plane (base plane)

Click on OK.

Then click XY-plane.

Click the OK button.

Select the circle.

Click on Constrain radius tool.

In the radius field type 50 and click OK.

Set the radius to 50 mm.

Click the Close button.

In the Combo view, type 20 in the length field.

Check the Reversed check box.

Click on OK button.

Pocket tool is used to create holes in already existing drawings.

In the Combo view, change the length to 20 mm.

Tick the Reversed check box.

Click the OK button.

Enter a Name and click Save.

Let us summarize.

Summary

• Draw basic shapes.
• Use basic constrains.
• Draw the Flange Coupling component in 3D.

Assignment

• Practice to draw different shapes.
• Practice pad and pocket tool.

About spoken tutorial project

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Spoken tutorial workshops

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Forum

Acknowledgement

Thank you

Thank you for joining.