A motor that creates motion in a linear direction through direct induction is often defined as a linear motor. It offers electric traction in a linear manner rather than a rotary direction. Conventional motors are used when rotary motion is required to be generated.
This device has been in use for over six decades now and continues to be used in cutting edge operations in the modern industrial sector. For instance, conveyor belts that need to travel in a single line make use of linear motors. Similarly, electrically powered looms are also known to incorporate these devices to allow for linear motion. In the recent past, these motors have become better in that they provide highly programmable motion, repeatability and distances.
These motors comprise of a force, magnets, a magnetic track and windings. The rotor comprises internal components such as windings, a magnet tracks and magnets. The linear magnet tracks act as guide rails so that the forcer can move in a straight track.
The operation of these devices is also simple, as they comprise a linear encoder to help measure the position at the load for impeccable accuracy. Tubular linear motors are also referred to as an electric cylinder because of its cylindrical shape. In an electric cylinder, the stroke is more intense because of the replication of coils. However, one drawback here is that you cannot use them in applications that are susceptible to leakage of magnetic flux. These are often used in conjunction with a linear actuator that is used for controlled and programmable linear motion. The cylindrical motors are best used for applications that require small-distance movement.
Let's take a look at some of the uses of these devices:
They are suitable for the most demanding automation tasks in applications including but not limited to transportation, conveying, computing, manufacturing etc.
They offer several advantages that make them a better and smarter alternative to pneumatic devices that have been conventionally used. These devices are known to demonstrate better returns in the long run.
If you are looking for a device that offers a long life, then you need not look further than motors that produce linear motion. They are not only precise, but also offer repeatable force which makes them programmable for different types of production cycles.
They can accelerate as well as decelerate in a highly precise, smooth and rapid manner. This reduces the chances of mechanical slamming which is a common problem otherwise.
Since compressed air isn't required to be generated, you can depend solely on electric power. They offer a smooth and quiet functioning thus reducing shop noise significantly. It can be coupled with a linear actuator.
More importantly, linear motors also have various mounting points that allow it to be installed efficiently.