What is the function of an interlock switch on a CNC machine?

The interlock switch on a CNC machine plays a critical safety role by ensuring that the machine cannot operate when access points, such as doors, are opened or moved. This is vital for protecting operators from potential accidents that could occur if the machine were to run while someone is inside the operational area, as it prevents accidental contact with moving parts. By cutting off power to the machine when the door is opened, the interlock system creates a safer working environment.

The other options describe functions that are not typically associated with interlock switches. The cooling system function pertains to temperature management of the machine and its components, while temperature monitoring and regulating the speed of the machine fall under different systems or controls that are not related to the interlock mechanism. Thus, the interlock switch specifically focuses on enhancing safety rather than controlling machine operations or environmental factors.