{"id":2004,"date":"2021-10-30T22:39:06","date_gmt":"2021-10-30T22:39:06","guid":{"rendered":"https:\/\/blog.metu.edu.tr\/eresmech\/?page_id=2004"},"modified":"2025-10-08T12:23:07","modified_gmt":"2025-10-08T12:23:07","slug":"1-3-1","status":"publish","type":"page","link":"https:\/\/blog.metu.edu.tr\/eresmech\/mechanisms\/ch1\/1-3-1\/","title":{"rendered":"1-3-1"},"content":{"rendered":"
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1.3<\/strong> Basic Concepts-1<\/h1>\n

Kinematic pair(joint)<\/strong><\/h2>\n

The main characteristics of a mechanism are not the rigid bodies (links) but the kinematic pairs that join these rigid bodies. It is this idea that has lent itself to modern mechanisms study.<\/p>\n

Kinematic element<\/strong>,<\/b><\/span>\u00a0is that part of a rigid body which is used to connect it to another rigid body such that the relative motion between the two rigid bodies can occur<\/span><\/p>\n

Kinematic pair<\/span><\/strong>\u00a0or simply\u00a0joint<\/span><\/strong>, ) is the joining of two kinematic elements. The types of kinematic pairs and their distribution within the mechanism determine the main characteristics of a mechanism.<\/span><\/p>\n

Classification of Kinematic pairs:<\/span><\/strong>
\nKinematic pairs may be classified in several different forms, we shall use more than one type of classification.<\/span><\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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Closed Kinematic pairs<\/span><\/strong>\u00a0are those in which the contact between the kinematic elements is maintained within all possible positions of a mechanism. Figure on the right shows a closed kinematic pair<\/p>\n

Open kinematic pair <\/span><\/strong>is one whose pairing and unpairing of its kinematic elements that form the joint are controlled. In the Geneva mechanism shown the contact between the pin and the slot is not continuous.<\/p>\n<\/div>\n<\/div><\/div><\/div>

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