Saturday, March 29, 2014

Kinematic Joints: Types explained with images

Rotating full Pin type Joint: In the Fig. posted below there are two Links joined by a pin. The links can have only rotational movement with respect to each other. In this type of joint the Degree of Freedom  is one. This is a Lower pair. 



Translating Slider: You can see in the Fig. posted below that the Slider can move only inside the slot, along the 'x' axis .This type of joints are known as Translating full slider. This type of joint falls under the category of a lower pair. The joint has one Degree of freedom. 




Link against Plane: This type of joint falls under the higher pair category. This is an example of  a joint which has Two degrees of Freedom. By looking at the diagram one can understand that it can move along 'x' Axis and rotate too. 






Pin in Slot: In the diagram, posted below,you can see that the link is connected to the slot by means of a pin. It is evident that the slot will permit movement along 'x' Axis, the link is free to rotate also. The joint, therefore, has Two Degrees of Freedom.It falls under the higher pair category.




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