Thermal compensation method and thermal compensation control system for machine tools

A thermal compensation control system for a machine tool, with the machine tool having a cutter and a driver for driving the cutter or a work piece, the system comprising:

• a tool setting probe configured to detect a cutter length of the cutter;
• a temperature sensor configured to detect a measured temperature corresponding to the cutter or the driver;
• a workpiece touch probe configured to measure a set of processing errors of the work piece;
• and
• a controller electrically connected to the driver, the tool setting probe, the temperature sensor and the workpiece touch probe, is configured to generate a control signal for controlling the driver according to a processing instruction, a temperature compensation model, the cutter length and the measured temperature;
• wherein the controller further determines whether to modify the temperature compensation model or not according to the set of processing errors;
• wherein the controller further has a storage medium, the controller writes the set of processing errors into the storage medium as a plurality of sets of history errors and the controller determines whether to modify the temperature compensation model or not according to latest N sets of history errors among the plurality of sets of history errors, wherein N is a positive integer greater than one.