Abstract: The present disclosure provides a machine tool power consumption prediction system configured for predicting power consumption of a machine tool. The machine tool executes numerical control programs to produce parts, and various parameters are included in each of the numerical control programs. The machine tool power consumption prediction system includes a power consumption database and a computer. The power consumption database stores power consumption data associated with different values of the parameters included in the numerical control programs. The computer is connected to the power consumption database to retrieve the power consumption data, and generates a power consumption estimate associated with each of the numerical control programs to be executed by the machine tool.

Abstract: A utilization rate calculation method is disclosed. The utilization rate calculation method comprises steps as follows: scanning an operation signal of I/O ports via a I/O port capturing module; continuously receiving the operation signal via the I/O port capturing module; determining whether a machine tool is running according to the operation signal and a processing machine operation rule via a utilization rate calculation system; if the machine tool is running, recording a processing time data of the machine tool; generating a utilization rate according to the processing-time data and time data to be processed, wherein the processing-machine operation rule is a record for at least one I/O port stand for running corresponding to the machine tool which is running, and the I/O port stand for running is one of the I/O ports.

Abstract: An air filter device includes an air filter medium, a base including a surrounding wall that has first and second ends and that defines a receiving space, and a loop-shaped retainer that engages removably the second end of the surrounding wall. The receiving space of the base is open at the first and second ends of the surrounding wall, and the air filter medium is placed removably in the receiving space. The first end of the surrounding wall is configured to support one side of the air filter medium, and the loop-shaped retainer is disposed to abut against another side of the air filter medium in the receiving space.