Abstract:
The object of the present invention is a device for detecting the thermal deformation of a spindle of a machine-tool. The machine tool comprises a spindle carrier (6) and a spindle (8). The device comprises a spindle carrier cover (12) associable at the front to the spindle carrier for covering, at least partly, the spindle carrier opening allowing in any case the shifting of the spindle, and detection means fixed to the spindle carrier cover. The detection means are suitable for detecting the position of the signalling element of the spindle for measuring the hot deformation of said spindle in said retracted position.
Abstract:
A machine tool is controlled through a process incorporating the steps of measuring geometric and thermal errors (102) with accurate instruments, creating a global differential wet model of machine tool position (104) and using this model to control real time compensation of machine tool operation. A controller modifies (112) encoder-type position feedback signals used by the machine to compensate for geometric and thermal errors in the manner dictated by the global differential wet model.
Abstract:
A method for processing products having low tolerances by removing shavings, including a processing step for finishing the workpiece being processed (2), comprises a step for detecting temperature (T) of the workpiece being processed (2) before or at the same time as the finishing step and a step for adjusting the finishing depths in accordance with the detected temperature value.
Abstract:
A method for operating controller for controlling industrial machine by which the temperature rise of a processor can be suppressed and, even when the operation of the processor is stopped due to a temperature rise, the processor can be restarted easily and the cessation of operation of the controller due to temperature rises can be prevented as much as possible. When the temperature in the controller is lower than a set value, the controller is normally operated by performing a plurality of processes at every fixed period. When the temperature becomes higher than the set value, on the other hand, a motor is stopped by stopping the process related to the shaft of the motor, and only the processing by means of a programmable controller and a man-machine interface for display is performed at the necessary minimum, with the mode being shifted to a low-power consumption mode. As the temperature rises, in addition, the heat generation and temperature rise of the processor are suppressed by lowering the operating speed of the machine controlled by the controller.