An adaptive cooling control method used in an adaptive cooling control system includes a controller installed in a machining center, a temperature sensor installed in a main shaft unit of the machining center, a temperature acquisition device and a main shaft cooling system. A built-in macro program unit of the controller determines whether the temperature of the main shaft falls within a predefined temperature rise range, and if so, the current cooling control parameters are maintained. If the temperature of the main shaft exceeds the predefined temperature rise range, appropriate cooling control parameters are calculated and provided to the dmain shaft cooling system for an adaptive control.

A numerical controller acquires state information (machine condition) such as the current temperature of a drive unit to determine whether a machining operation based on a machining program can be started or not by comparing the state information with a machine condition history recorded in a recording unit. If determined that the machining operation can be started, a machining operation start command is output and if determined that the machining operation cannot be started, the machine condition is monitored to withhold outputting of the machining operation start command until the machine condition allowing to start the machining operation based on the machining program appears.

A numerical control device with a function to prevent a problem caused by a rapid stop of a processing operation due to a motor overheating during processing. A temperature comparator obtains a load ratio T/Tmax or Tw/Tmax which is a ratio of the motor temperature T or predicted temperature Tw to a maximum allowable temperature Tmax stored in a storage device. When the load ratio T/Tmax or Tw/Tmax is over a threshold Tp stored in a storage, the device is placed in an alarm mode to shutdown the power supply to the motor after the processing program is executed to the end of a sequence block or the end of the processing program.

The present invention provides a servo control system and a robot. The servo control system is applied to a servo, and includes a main control module including an angle information receiving terminal and a detection control terminal; and an angle collection module including a magnet and a magnetic encoding chip spaced apart from the magnet by a certain distance. The magnet is connected to a rotation output shaft of the servo. The magnetic encoding chip includes an angle information output terminal and a detection control receiving terminal. The main control module controls, via the detection control terminal and the detection control receiving terminal, the magnetic encoding chip to sense information of changing magnetic field generated when the magnet rotates. The magnetic encoding chip senses information of rotation angle of the rotation output shaft of the servo according to the information of changing magnetic field. The main control module receives, via the angle information output terminal and the angle information receiving terminal, the information of rotation angle of the rotation output shaft, to control rotation of the servo. In the above manner, the present invention can accurately acquire position information of a servo.

A learning model is constructed for adjusting control information so that a cycle time becomes shorter while also avoiding the occurrence of overheating. A learning model construction device includes: an input data acquisition means that acquires, as input data, control information including a combination of an operation pattern of a spindle and parameters related to machining in a machine tool, and temperature information of the spindle prior to performing the machining based on the control information; a label acquisition means for acquiring temperature information of the spindle after having performed the machining based on the control information as a label; and a learning model construction means for constructing a learning model for temperature information of the spindle after having performed machining based on the control information, by performing supervised learning with a group of the input data and the label as training data.

A numerical control device, in a motor drive system which drives a motor part which has a cooling fan motor and is provided with the numerical control device to drive the motor part, which acquires the temperature of the component elements of the motor part from the temperature detectors, ambient temperature, input energy to the component elements, and output energy from the component elements, estimates the heat radiation characteristic of the component elements from the data of the temperature of the component elements, ambient temperature, and input/output energy, compares the estimated value of the heat radiation characteristic of the component elements with a normal value, judges that the cooling fan motor is abnormal when the heat radiation characteristic is below the normal value, and thereby prevents trouble due to overheating of the component elements of the motor part.

This invention relates to a system for protecting rotating electromechanical systems against damages including a coupling configured to connect a moment provider with a load, having first communication means, a first CPU, a first energy providing means and at least one sensor, a control unit having second communication means, second energy providing means, and second CPU, the coupling configured to use the at least one sensor for performing measurements and to communicate with the control unit.

A thermal displacement state (target thermal displacement state) in which thermal displacement of a machine tool is saturated when the machine tool is operated based on a machining program is previously stored, and a warm-up operation pattern of a motor is determined so as to approach the target thermal displacement state. The motor is driven based on the warm-up operation pattern and the warm-up operation of the motor is stopped if the thermal displacement state of the machine tool is within a predetermined range.

A machine tool controller according to an embodiment of the present invention, for controlling a spindle and a feed axis, includes a motor temperature obtaining unit for obtaining and outputting the winding temperature of a spindle motor as a motor temperature; an inverter temperature obtaining unit for obtaining and outputting the temperature of an inverter that drives the spindle motor as an inverter temperature; a motor temperature comparator for comparing the outputted motor temperature with an overheat temperature for the motor; an inverter temperature comparator for comparing the outputted inverter temperature with an overheat temperature for the inverter; and an overheating assessment unit for imposing a restriction on the output of the spindle motor according to the smaller one of the differences between the motor temperature and the overheat temperature for the motor and between the inverter temperature and the overheat temperature for the inverter.

This invention relates to a system for protecting rotating electromechanical systems against damages including a coupling configured to connect a moment provider with a load, having first communication means, a first CPU, a first energy providing means and at least one sensor, a control unit having second communication means, second energy providing means, and second CPU, the coupling configured to use the at least one sensor for performing measurements and to communicate with the control unit.