What is the purpose of a coolant system in a CNC machine?

The purpose of a coolant system in a CNC machine is primarily to cool the cutting area and flush away chips. This function is essential for maintaining an optimal cutting temperature during machining operations, which can prevent overheating of both the workpiece and the cutting tool. Excessive heat can lead to tool wear and may negatively affect the finished part's quality.

Additionally, the coolant helps clear away chips and debris generated during the machining process, ensuring that the cutting tool remains effective by not becoming obstructed. The combination of cooling and chip removal contributes to enhanced precision and surface finish in machined parts.

While lubrication of machine parts is important for the overall maintenance of a CNC machine, it is a separate function not directly related to the primary purpose of the coolant system. Maintaining machine temperature and drying machined parts are also not the primary objectives of the coolant system.