What is the main function of a coolant in CNC machining?

The primary function of coolant in CNC machining is to keep the workpiece cool and effectively remove chips generated during the machining process. As cutting tools engage with the workpiece material, they produce heat due to friction, which can adversely affect tool life, workpiece surface finish, and overall machining accuracy. The coolant helps dissipate this heat, maintaining an optimal working temperature, which is crucial for precision and preventing thermal distortion of the workpiece.

In addition, the coolant aids in flushing away chips created during machining. The removal of these chips is essential because if they accumulate, they can interfere with the cutting process, lead to tool wear, and potentially damage the workpiece. Thus, the coolant plays a vital role in enhancing the efficiency and effectiveness of the CNC machining operation by managing both temperature and chip removal.