Please enable JavaScript.
Coggle requires JavaScript to display documents.
Dimensions, Tolerances & Assemblies - Coggle Diagram
Dimensions, Tolerances & Assemblies
Dimensions
-
-
Dimensioning of Circle, Arc & Hole
- Circle is Dimensioned by its diameter
- Arc is dimensioned by its radius
- Holes are located by their centerlines
-
-
-
-
-
-
Tolerances
Importance of Tolerance
- If tolerance is not given, exact measurement of the parts must be made. Rejection rate will be very high and is not realistic.
- The range of tolerance will translate into the manufacturing method needed, since different manufacturing method has different degree of tolerance.
- Same parts can be made from different companies and they have to be interchangeable. Tolerance ensures good quality control for parts from different companies.
- Tolerance will ensure that mating parts of an assembly interface and fit well.
3 Types of Tolerance
Bilateral Tolerance
Allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.
-
-
-
In Fusion 360
- Create 3D Models & Save
- Create Drawings
- Double Click on Dimension to Specify Tolerances
-
Assemblies
Multiple parts are brought together to define a larger, more complex product representation.
How it Works?
Constructing an assembly normally begins with bringing in a base component, selected because of its central role. Each component brought in needs to be oriented and located relative to other components in the assembly. Assembly joints are used between elements of components.
Types of Joints
- Rigid
- Revolute
- Slider
- Cylindrical
- Pin Slot
- Planar
- Ball