- published: 15 Oct 2015
- views: 18413983
A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion or vice versa. It is often a part of a rotating wheel (e.g. an eccentric wheel) or shaft (e.g. a cylinder with an irregular shape) that strikes a lever at one or more points on its circular path. The cam can be a simple tooth, as is used to deliver pulses of power to a steam hammer, for example, or an eccentric disc or other shape that produces a smooth reciprocating (back and forth) motion in the follower, which is a lever making contact with the cam.
The cam can be seen as a device that rotates from circular to reciprocating (or sometimes oscillating) motion. A common example is the camshaft of an automobile, which takes the rotary motion of the engine and translates it into the reciprocating motion necessary to operate the intake and exhaust valves of the cylinders.
Certain cams can be characterized by their displacement diagrams, which reflect the changing position a roller follower (a shaft with a rotating wheel at the end) would make as the cam rotates about an axis. These diagrams relate angular position, usually in degrees, to the radial displacement experienced at that position. Displacement diagrams are traditionally presented as graphs with non-negative values. A simple displacement diagram illustrates the follower motion at a constant velocity rise followed by a similar return with a dwell in between as depicted in figure 2. The rise is the motion of the follower away from the cam center, dwell is the motion where the follower is at rest, and return is the motion of the follower toward the cam center.
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And your hair is laid back
Hey lady what you say
How about some fun today?
Is it yes? Is it no?
Whatever it is just let me know
Don't fake me out, out
Oh, you make me shout
Alligator woman, you don't care
You ignore my desires, it ain't fair
You just want to tease me and turn me on
I want you to go but I don't want to be alone, ho
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You make me hot, with what you've got
Your big behind, it makes me blind
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Aw girl, aw girl
Alligator woman, you don't care
You ignore my desires, it ain't fair
You just want to tease me and turn me on
I don't want you to stay but I don't want to be alone, now
You're a mess, I must confess
You make me hot, with what you've got
Your big behind, it makes me blind
Don't take me gross but you're the most
You're a mess, I must confess
You make me hot, with what you've got
Your big behind, it makes me blind