3D Exercise 108 CAM MECHANISM
- Breno Cruz
- há 3 dias
- 2 min de leitura
In this CAD tutorial we'll use the features:
1. Import Spline CSV
Definition: Creates a complex curve from a spreadsheet of coordinates (X, Y, Z). How it works:
The Problem: You need a mathematically perfect shape (like a NACA airfoil for a wing or a specific timing curve for a engine cam). You cannot draw this by hand.
The Solution: You use a script or the "Import Spline" utility to read a .csv file. Fusion plots hundreds of points and connects them with a smooth spline automatically. Best for: Airfoils, propeller blades, and cam profiles.
2. Extrude
Definition: Turns the 2D spline into a 3D solid. How it works: You select the closed profile created by your CSV spline and give it thickness. Best for: Creating the physical cam or wing segment.
3. Chamfer
Definition: Cuts a flat angle on edges. How it works:
Engineering Reason: If this is a Cam, you need to chamfer the edges so it doesn't slice into the roller follower. If it's an Airfoil, you might chamfer the root where it mounts to the fuselage. Best for: Reducing wear and easing assembly.
4. Create Components (The Critical Step)
Definition: Converts a "Body" (dumb geometry) into a "Component" (a part that can move). Why this matters:
The Rule: You cannot use Joints on Bodies. You can only Joint Components.
The Action: Right-click your Extruded Cam in the browser and select "Create Components from Bodies." Best for: Preparing your design for assembly and motion simulation.
5. Joint (Constraint Components)
Definition: Defines how two parts move relative to each other. How it works:
Fusion vs. Others: unlike other CAD (which uses "Mates" like Touch/Flush), Fusion uses Joints. A Joint defines the motion allowed.
Types:
Rigid: Glues them together (like a weld).
Revolute: Allows spinning (like a hinge or axle).
Slider: Allows sliding (like a piston). Best for: Assembling the Cam onto a driveshaft so you can watch it spin.
All dimensions are in mm/g/s/ISO
3D Sketch
Exercise 108 - 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/r5Iw28zuibM
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