Tool compensation system and method for computer numerical control machine

A tool compensation system for compensating for abrasion of a tool, the system comprising:

• a rangefinder configured for measuring an actual length of the tool;
• a control system configured for storing a previous length of the tool, and capable of calculating a compensation value according to the actual length received from the rangefinder, and outputting a control instruction according to the compensation value;
• and
• a compensation apparatus comprising:
• an actuator configured for receiving the control instruction from the control system;
• a transmission element capable of being actuated by the actuator to move a distance equal to the compensation value in response to receiving the control instruction;
• and
• a regulator configured for supporting an article to be machined by the tool, wherein the regulator is capable of moving towards the tool under the actuation of the transmission element, and is configured to compensate for abrasion of the tool.