Rotation is a scientific term for when an object moves on its axis. It has various uses in machinery and popular culture. Slewing can mean a sudden movement or getting drunk. Mechanical parts like ball bearings and swivel rings are used in cranes and robots.
Rotation is a scientific term for when a rotating object moves on its axis. It is used both as a mathematical description for a type of motion and as a term for parts of machinery created to facilitate that type of motion. The term also has several everyday uses in popular culture.
One type of spin can be illustrated with the movement of a top. If a top has been given a sharp spin, it will remain level with its axis. As the rotation proceeds, the axis of the top will swing as it rotates. This is the “rotation” motion.
Another type of rotation is simply a range of vertical and horizontal motions. Large Arrays, a series of radio dish antennas, are programmed to track the movement of the sun. Their platters rotate in a sideways motion every day, spinning on their axes. Similarly, a spaceship is said to perform a rotational movement when its altitude changes.
The term slewing can also be used in a less scientific way. It can mean that something has made a mistake in a set path or is making a sudden, out-of-control movement. A car that skids in the slush in such a way that it changes direction can be said to have “turned over”. “Slewing” is also a Canadian term for the act of getting drunk.
The term is also used to describe different types of mechanical parts used to create a rotating joint, such as ball bearings. They must be strong enough to carry a load from many different directions. These types of bearings can be both cylindrical and ball.
A swivel ring is a double-sided metal ring. The two rings rotate around each other on a series of gears or ball bearings. Often two rows of bearings within a pair of rings are used to make a part with a rotating axis.
These parts are used in the creation of cranes and other large machines. They are often manufactured for use in mechanical objects such as windmills and Ferris wheels. Other times, slewing rings can be used to build things on a smaller scale. For example, robotic arms, whose joints require a large range of motion, often use washers and bearings. These parts are useful for robots built for tasks that require fine motor control and can be used to create parts similar to wrist joints.
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