Patent ID: 8121720

Claim:
A tool-path calculation apparatus, which applied to a CNC tool machine to calculate tool paths according to a G-code file produced by a CAM software, the too-path calculation apparatus comprising: an upper controller comprising: an interpreter reading the G-code file and interpreting the G-code file to produce a plurality of executable instructions; and a first high-speed serial communication interface connecting to the interpreter to provide an interface for sending the executable instructions; and a servo driver comprising: a second high-speed serial communication interface connecting to the first high-speed serial communication interface of the upper controller to electrically connect between the servo driver and the upper controller to provide an interface for receiving the executable instructions; a queue buffer connected to the second high-speed serial communication interface to provide an store storage for storing the executable instructions which sent from the upper controller to the servo driver; and a tool path calculator connected to the queue buffer to receive and calculate the executable instructions to produce a plurality of path points along the tool paths.