Machine tool and machine tool control system

A machine tool comprising:

• a cover that encloses a processing space in which a workpiece is processed and has a window portion for visual inspection of the processing space from outside;
• a machining processing unit provided in the processing space;
• an operation panel for inputting instructions to the machining processing unit, the operation panel being provided outside of the cover;
• and
• a cooling system for cooling the machining processing unit,
• wherein the cooling system includes:
• a coolant supply unit for supplying a coolant into the processing space;
• a coolant protection unit that operates to limit adhesion of the coolant to the window portion;
• and
• a control unit that switches a state of the coolant protection unit based on a result of detection performed by a sensor for detecting an operator present around the cover,
• wherein the control unit brings the coolant protection unit into a first state when the sensor has detected the operator, and brings the coolant protection unit into a second state when the sensor has not detected the operator,
• the first state is a state in which the coolant protection unit operates,
• the second state is a dormant state in which the coolant protection unit does not operate or a state in which the coolant protection unit operates at an output lower than that in the first state, and
• the control unit decreases or increases the output in the first state based on a duration of the first state.

A machine tool comprising:

• a cover that encloses a processing space in which a workpiece is processed and has a window portion for visual inspection of the processing space from outside;
• a machining processing unit provided in the processing space;
• an operation panel for inputting instructions to the machining processing unit, the operation panel being provided outside of the cover;
• and
• a cooling system for cooling the machining processing unit,
• wherein the cooling system includes:
• a coolant supply unit for supplying a coolant into the processing space;
• a coolant protection unit that operates to limit adhesion of the coolant to the window portion;
• and
• a control unit that switches a state of the coolant protection unit based on a result of detection performed by a sensor for detecting an operator present around the cover,
• wherein the control unit brings the coolant protection unit into a first state when the sensor has detected the operator, and brings the coolant protection unit into a second state when the sensor has not detected the operator,
• the first state is a state in which the coolant protection unit operates,
• the second state is a dormant state in which the coolant protection unit does not operate or a state in which the coolant protection unit operates at an output lower than that in the first state,
• the first state is selected from among a plurality of output states, and
• the control unit selects one from among the plurality of output states based on a duration of the most recent second state.