A Review on Coolant Feeding System of CNC Machining Process

CNC manufacturing has been evolved into the modern multi-process and multi-axis machining operation. The advances in hardware design increased productivity. This development brought an advanced feature for CNC machines such as automatic lubrication systems, automatic tool length setters, and coolant-fed tooling systems. A large amount of heat can be liberated from CNC machining operation due to friction developed at the tool–work interface. To reduce friction at the cutting zone and to improve the cutting performance  a coolant-fed tooling system is used. The coolant-fed tooling system greatly reduces the friction and temperature and improves the surface finish. The present paper focuses on various types of coolant supply systems, viz coolant-fed tooling system, through the spindle coolant system, etc. It was concluded that the coolant-fed cutting tools can best improve production efficiency due to the pressurized coolant.