Cam mechanism generally high pair mechanism by the cam follower and rack composed of three members. Typically for continuous constant rotation cam follower in accordance with the requirements of the design give it some regular exercise. Cam mechanism to achieve complex motion requirements, are widely used in a variety of automated and semi-automated mechanical device. Simple cam structure [1] cam mechanism usually consists of two parts, moving parts, namely sub-cam and follower (follower), both fixed to the seat frame. Cam means is a considerable change, so almost any action can produce all through this one institution. Can be defined as a mechanical cam surface or groove of the song has, with its swing or swing, you can make another component - driven sub provide preset movement. Son of the most driven path limited to a chute to get to cover sports. In its reply to the trip, sometimes it relies on its own weight, but some institutions to obtain precise movements, often as a response to the spring force, while others take advantage of the guide groove, so that movement on a specific path.

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