firstfare 2012 fusion joints
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© 2007 Autodesk 1
Using Joints in Inventor FusionHow to model realistic mechanisms easily
October 27, 2012
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© 2007 Autodesk 2
What is Inventor Fusion?
• Inventor Fusion is a new CAD product from Autodesk• It is designed to be simpler to use and easier to learn than
other CAD tools• Key features:
• Mac O/S support• Direct geometry modeling:
• Shape creation using familiar tools, but without the complexity of parametric, history-based design
• Simple editing using interactive tools directly on the model• Mechanism design using Joints
• Allows you to create assemblies using familiar concepts of joints, instead of traditional mate/flush/align constraints
• This will be the main focus of our class today
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© 2007 Autodesk 3
Fusion Modeling
• Quick introduction to basic modeling techniques and concepts• Component hierarchy
• Multiple components, all in a single file• Each component can have multiple bodies• A body can be solid or surface
• Body modeling• Geometry creation:
• Primitive shapes• Sketch/Feature creation
• Geometry modification• Features• Press/Pull and Tweak Faces
• Construction geometry
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© 2007 Autodesk 4
Modeling Demo
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© 2007 Autodesk 8
Fusion Joints for mechanism
• Joints apply only to components• Joints allow you to define how two components will move with
respect to each other• Supported types:
• Most common are “Slider” and “Revolute”• Most mechanisms can be designed using just these two
• “Rigid” joint is a special case: used to glue or weld two components together
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© 2007 Autodesk 9
Simple example – robotic claw
• Let’s look at simple example that illustrates the basics, using only a single joint type: “Revolute”
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© 2007 Autodesk 10
The Add Joint command
• Command inputs:
• Select geometry on the two components (first one will move to the second)
• Select the joint type• OK!
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© 2007 Autodesk 11
Joints Demo
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© 2007 Autodesk 12
Two intermediate topics
• Joint Limits• Sometimes you want to restrict the movement of your joints
• Motion Relationships• Sometimes you want to make two joints move together
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© 2007 Autodesk 13
Another Demo
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© 2007 Autodesk 14
Advanced Joints
• Contact sets• Motion studies
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© 2007 Autodesk 15