Guasi-static error compensation device of CNC/PC-NC machine and compensation method

摘要

The present invention relates to a static error correction device and a correction method of C / C-CNC machine tool which can quickly correct static errors including thermal deformation errors due to temperature changes occurring during operation and geometric errors of machine tools. The present invention is to count the encoder signal of the X, Y, Z axis motor output from the controller of the machine tool in order to remove the noise signal that is interfaced to the controller of the machine tool and detected by the X, Y, Z axis motor A counter for detecting the current position and related information of the machine tool through the method, and a temperature detector for detecting a temperature value of the machine tool measured from a temperature sensor (thermocouple, thermocouple) installed on one side of the structure part, which is interfaced to the structural part of the machine tool. And interfacing to the temperature detector and measured on the working space of the machine tool using an error measuring instrument and a measuring device. The algorithm uses the red error, stores the static error map, and generates a detailed error map according to the location information using the stored error map, receives the current position and related information of the machine tool output from the counter, and receives the temperature. A main computer for determining a static error correction amount according to a temperature and a current position when a detected temperature change amount exceeds a reference temperature change amount by receiving a temperature value output from the detection unit and comparing the set reference temperature value; A static error correction amount output unit for interfacing the static error outputted from the main computer to calculate the correction amount of the static error and feeding back the calculated static error correction amount to the controller of the machine tool, and the initial origin of the machine tool being interfaced to the controller. Position detection and emergency stop or system alarm signal A digital signal to transmit the detection signal detected by the host computer comprises input and output parts.