In mechanical terms, pneumatics is a part of certain system that produces power. It makes use of gases or air in order to create a power. A pneumatic system will greatly depend on what is called as differential pressure.
In other words, pneumatic systems are mechanical systems that make use of compressed gasses. They are somewhat similar to hydraulic systems which are systems that make use of liquids in the transfer of forces. Pneumatic systems can be found in almost everywhere in the modern world. Dentists make use of pneumatics in order to operated drills, carpenters to power air hammers, and many more.
Principles Of Pneumatics
Pneumatics is a method of turning electricity into mechanical motion with the use of compressed gasses instead of electromagnets or motors. Systems will include an air compressor that stores compressed air in a cylinder and releases it under electric control. Oftentimes, the air can slightly be modified by taking out some of the water vapor and incorporating a small amount of atomized oil so as to make the gas more machine friendly.
Pneumatic systems are usually used for power tools. Indeed, there are plenty of tools powered by this system in carpentry, dentistry, laboratories, and machine shops. Some other applications will include jackhammers which is a cylinder delivery system usually used by banks and launchers and guns meant to propel objects. An excellent application is the new automobile that runs on compressed air. Electricity is actually utilized overnight in order to compress air into an on board cylinder. The car will run all day with no fuel as well as pollution emissions.
Hydraulic Vs. Pneumatic
Hydraulic systems will make use of oil as the control fluid. They have the advantage that they can handle bigger loads. Its disadvantage is that when there is a leak, it will cause a huge mess and is indeed very costly to fix. On the contrary, a leak in the pneumatic system might mean that you vent ordinary air, which can actually be replaced for free if the leak is fixed. These systems are usually preferred if there must be a specific amount of play or give in the system. But if high pressure must be maintained without any fluctuation, hydraulic system is highly recommended.
Pros And Cons
Due to the fact that air is compressible, it might be very difficult to control the precision and speed of a pneumatic system. Thus, when specific speeds and positioning are required, additional systems might need to be construction as this offers additional control.