Coolant system

Coolant system

•Coolant is a type of lubricant designed for metal working processes.

•When metal cutting takes place in a machine due to high cutting speed a frictional force is generated in between tool and workpiece.

• The friction generates heat due to which unwanted wear takes place, reduces the tool life, effect machine efficiency also gives poor surface finish to work piece.

•To avoid these a cutting fluid is to be use known as coolant.

    Types of cutting fluid

•Liquid

 Semi-synthetic coolants, also called soluble oil(Water with mineral oil)

•Paste or gels

•Aerosols(Mists)

•CO2 coolant

•Air or other gases

•Solid

       Properties of a good coolant

•keep the work piece at a stable temperature .

•maximize the life of the cutting tip by lubricating the working edge.

•prevent rust on machine parts and cutters.

•Keep the machine and bed clean.

•High thermal capacity and lower viscosity.

Coolant system in CNC machine

•All CNC machines are provided with a coolant tank along with level gauge and sensor.

•In certain cases secondary coolant tank is also provided.

•A feedback signal is generated when the level of coolant goes low from the specified level and an alarm is triggered.

•For every types of coolant there are separate pump and motor arrangement.

•Bag filters are provided in secondary coolant tank to filter the coolant.

Important codes related with coolant system

•M07 : Mist coolant ON

•M08 :  Flood coolant ON

•M26 : Spindle through coolant

•M09 : All coolant OFF

Types of Coolant System in CNC machine

1) Mist Coolant

2) Flood Coolant

3) Through spindle coolant

Watch video on Coolant system