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L06 - Dimensions , Tolerances & Assemblies - Coggle Diagram
L06 - Dimensions , Tolerances & Assemblies
Dimensions
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Types of dimensioning
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Chain Dimensioning
:arrow_right: should ONLY be used if the function of the object would not be affected by the accumulation tolerances
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Dimensioning circle , arc and hole
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Tolerances
Tolerances are included with dimensions in engineering drawings to take into account these manufacturing limitations.
Types of tolerances
Bilateral Tolerances
:arrow_right: allowed to vary in two directions from the specified dimension. Both directions need not vary by the same amount.
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Types of joints
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Revolute : A revolute joint has a single rotational degree of freedom, much like a hinge. This joint can rotate around the standard X, Y, or Z axis, or around an edge in the model (a custom axis).
Slider: A slider joint has a single translational degree of freedom. It is used for components that slide along one another. Options are similar to revolute joint options, except that components slide along the selected axis rather than rotating around it.
Cylindrical : A cylindrical joint provides two degrees of freedom: one translational and one rotational. Components joined with a cylindrical joint always rotate around the same axis.
Pin Slot : A pin slot joint also allows two degrees of freedom, but components can rotate around different axes.
Planar : A planar joint allows three degrees of freedom. It allows two directions of translation in a plane and a single rotational direction normal to that plane. It is useful for joining two components so they can rotate while sliding across the plane.
Ball: A ball joint has two degrees of rotational freedom: pitch and yaw. Pitch allows components to rotate around the Z axis. Yaw rotates components around the X axis.
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