Linear Motion System


Linear motion is the most basic of all motions. Objects that are not subjected to external forces will progress uniformly in a straight line permanently. Linear Motion is the movement along a line or length of area. Linear motion can be uniform at a constant speed, or non-uniform with fluctuating velocities (non-zero acceleration). The motion of an object along a line can be described by its position (x), which differs with the amount of time (t). Linear motion is sometimes called rectilinear motion.

CAM

A cam follower system is a system/mechanism that uses a cam and follower to create a specific motion. The cam is in most cases merely a flat piece of metal that has a shape or profile machined onto it. This cam is attached to a shaft which enables it to be turned by applying a turning action to the shaft. As the cam rotates it is the profile or shape of the cam that causes the follower to move in a specific way. The movement of the follower is then transferred to another mechanism or another part of the mechanism.

ACTUATORS

Actuators are devices that put the Linear motion system into automatic action. Actuators are used in a wide variety of applications, from industry machines producing products to computers starting up. Whichever type of actuator you need, there are several different types that can help you achieve putting things into motion. Shapes and styles distinguish actuators by use. There are three types of linear actuators, including basic, compact, and rodless cylinders. Both the basic and compact cylinders are best used when needed for a individual or dual action. Rodless cylinders are best used for long stroke applications in magnetic or mechanical systems. Another type of cylinder is the guided cylinder. This will provide a more stable precise movement that will eliminate bending.

BALL AND ROLLER SLIDES

Roller Slides, sometimes called crossed roller slides,are no motor linear slides that provide high precision linear movement for equipment powered by inertia or by hand. Roller slides are based on roller type bearings, which are frequently crossed to provide heavy load capabilities and more precise movement control. Roller Slides are mainly used in industries such as manufacturing, medical and telecommunications, and are versatile,with the ability to be adjusted to meet multiple applications which typically include clean room, vacuum environments, material handling and automated machinery. Roller slides work similar to ball bearing slides, except that the bearings are cylinder-shaped instead of ball shaped. The rollers cross each other at a 90 angle and move in between the four parallel rods that surround the rollers. The rollers are between "V" grooved bearing raceways, one being on the top and the other at the base. The travel ends when it meets the end cap. Typically, bases are constructed from aluminum and the rods and rollers are constructed from steel. Ball bearing slides are the most common type of linear slide. Ball bearing slides offer smooth precise movement along a guide rail, aided by ball bearings housed in the base,for increased reliability. Ball bearing slide applications normally include robotic assembly, cabinetry, high-end appliances and clean room settings, which primarily serve the manufacturing industry. For example, a widely used ball bearing slide in the furniture industry is a ball bearing drawer slide. Linear motion systems play an integral role in all of our lives and will continue to be important as we explore robotics and other technological advancement.

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  14. linear actuators are ideal for positioning loads that are either externally guided and supported, or pivoting. These linear actuators also can do very well where there is a high concentration of airborne contaminants. Another excellent use of a precision linear actuator is in the replacement of hydraulic or pneumatic cylinders where electric precision linear actuators bring many benefits compared to the traditional technologies.

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  15. This blog was really helpful.It provided me with wide range of information about compact linear actuator.Use of linear motion into automatic action and replacing hyraulics is really marvelous.

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