3D Exercise 82
- Breno Cruz
- Jan 3
- 2 min read
In this CAD tutorial we'll use the features:
1. Plane at Angle (Construction)
Definition: Creates a sketch plane that is rotated around a selected line or axis. How it works: You select a line (like an axis or a sketch edge) and type a degree (e.g., 45°). Best for: Creating "Dished" parts. If you are designing a steering wheel, the spokes are rarely flat; they are usually angled upwards. This tool lets you sketch on that slope.
2. Revolve
Definition: Creates the central cylindrical hub. How it works: Sketch the cross-section of the center mounting point and spin it 360°. Best for: The heavy center hub of a wheel.
3. Plane Along Path
Definition: Creates a plane perpendicular to a specific point on a curve. How it works: Necessary if you need to sketch a custom profile for your rim that isn't a simple circle. Best for: Setting up the sweep/pipe for the outer rim.
4. Pipe
Definition: Instantly creates the outer rim. How it works: You sketch a large circle (the path) and use Pipe to turn it into a thick, comfortable grip. Best for: The outer ring of the steering wheel.
5. Rib
Definition: Adds stiffness to the angled spokes. How it works: You sketch a single line on your Plane at Angle and the Rib tool fills the gap between the spoke and the hub. Best for: Ensuring the spokes don't snap under torque.
6. Circular Pattern
Definition: Duplicates the spokes. How it works: You model one complex, angled, ribbed spoke. Then pattern it 3 times. Best for: Creating a 3-spoke wheel instantly.
7. Hole
Definition: Creates the bolt pattern. How it works: Adds the standard 6-bolt mounting pattern to the center hub.
8. Fillet
Definition: Replaces a sharp edge with a smooth, rounded arc (radius). How it works: You select an edge and define a radius (e.g., 5mm). It adds material to concave corners (making them stronger) and removes material from convex corners (making them safer). Best for:
Stress Relief: Sharp internal corners are where parts crack. A fillet distributes stress over a curve, making the part significantly stronger.
Aesthetics/Touch: Making a consumer product (like a phone case) feel smooth in the hand.
Manufacturing: CNC machines use round spinning cutters; they cannot cut a perfect sharp internal 90° corner. You must add a fillet to internal pockets.
9. Chamfer
Definition: Replaces a sharp edge with a flat, angled slope (bevel). How it works: You select an edge and usually define a distance (e.g., 2mm) and an angle (usually 45°). Best for:
Assembly (The "Lead-in"): If you are trying to insert a pin into a hole, a chamfer acts as a guide ramp to help the parts slide together.
Deburring: Quickly removing the razor-sharp edge left by machining so it doesn't cut the machinist's hands.
Countersinks: Preparing a hole so a flat-head screw sits flush with the surface.
All dimensions are in mm/g/s/ISO
3D Sketch
Exercise 82 - 3D practice drawing for all CAD software ( AutoCAD, SolidWorks, 3DS Max, Autodesk Inventor, Fusion 360, CATIA, Creo Parametric, SolidEdge etc.)
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Tutorial In Autodesk Fusion: https://youtu.be/PxmIK-p61TA
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