Apparatus and method for transforming NC programs

A NC program transformation apparatus electrically connected to a controller configured to execute a NC program to command a machine to drive a cutting tool to cut a workpiece, the NC program transformation apparatus comprising:

• a coordinate position processing module electrically connected to the controller;
• a triggering module electrically connected to the controller and the coordinate position processing module and configured to trigger the controller to execute blocks of the NC program in a single block mode for generating at least one set of coordinate positions corresponding to the executed blocks, and the blocks of the NC program configured to command the cutting tool to move to positions corresponding to the at least one set of coordinate positions in order, and the triggering module configured to trigger the coordinate position processing module to acquire the at least one set of coordinate positions generated by the controller;
• a storage module electrically connected to the coordinate position processing module and configured to store the at least one set of coordinate positions;
• and
• a determination module electrically connected to the controller and the coordinate position processing module and configured to determine whether the controller finishes the respective block, and command the coordinate position processing module to acquire the coordinate position generated by the controller when the controller finishes the respective block,
• wherein whenever the triggering module simultaneously sends a first triggering signal to the controller and a second triggering signal to the coordinate position processing module once, the controller is triggered to execute respective one of the blocks and generate the coordinate position corresponding to the executed block and the coordinate position processing module is triggered to acquire the coordinate position generated by the controller;
• wherein the coordinate position processing module further acquires a feed rate of the cutting tool from the controller and the feed rate of the cutting tool is stored in the storage module;
• wherein when one block in the NC program indicates M coordinate positions, the coordinate position processing module forms a basis unit vector according to an (i−2)th coordinate position and an (i−1)th coordinate position among the M coordinate positions and forms an ith comparison unit vector according to the (i−1)th coordinate position and an ith coordinate position among the M coordinate positions;
• when the ith comparison unit vector is the same as the basis unit vector, the storage module does not store the (i−1)th coordinate position among the M coordinate positions;
• and
• M is a positive integer larger than 2, and i is a positive integer larger than 2 but not larger than M.