What is machine?

A machine is a set of mechanisms consisting of various machine elements such as gears, bearings and shafts in order to convert any type of energy into another energy, to do a work or to create an effect by using a certain power.

Electronic or organic devices that do not have any mechanical parts are also called machines. Machines are developed to assist or completely replace human or animal power in performing a particular job or performing a physical function. From simple machines such as levers, inclined planes, and spinning wheels,

They cover a wide range of devices, from very complex systems such as a modern automobile. Machines can operate by converting thermal, chemical, nuclear or electrical energy into mechanical energy or vice versa, or they can only function to transmit or adapt forces and motion.

All machines have input and output equipment and adaptation or conversion and transfer equipment. Machines that take input energies (input) from natural sources such as wind, river, coal, oil or uranium and convert this energy into mechanical energy are called primary motors. windmills, water wheels, turbines,

steam engines and internal combustion engines are the primary actuators. The output energy (output) from these machines can be fed as input to other machines, such as an electric generator, hydraulic pump or compressor, often via rotary shafts. These last three devices are in the generator class;

The electrical, hydraulic and pneumatic energies that are the output of these devices can be used as inputs in electric, hydraulic or air motors. Material processing machines such as machine tools,

It is used to operate packaging and conveying machines or machines that produce various types of output, such as sewing machines and washing machines.

Machines that do not fall under the class of primary actuator, generator or motor are called processor (operator machine); processors category,

It includes all hand-operated instruments such as calculators and typewriters. In some cases machines from all categories are combined into a single unit. For example, in a diesel-electric locomotive, the primary actuator is the diesel engine; This motor powers the electric generator, which in turn drives the motors that turn the wheels.

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