Matching recognition method and system for NC program and corresponding cutting tools of machine tools

A matching recognition system for an NC program and corresponding cutting tools, applied to a computer furnished with the NC program, the NC program including a plurality of sequential machining steps, the computer connecting a machine tool and an imaging device, the machine tool including a plurality of numbered tool holders, each of the plurality of numbered tool holders mounting one of the cutting tools, comprising:

• an imaging device, connected with the computer, being to capture a plurality of 2-dimensional images from the cutting tools;
• an image-processing module, installed in the computer, being to base on the plurality of 2-dimensional images to extract outline feature points and assembling postures of the cutting tools to obtain a plurality of analyzed results, converting the plurality of analyzed results into a plurality of corresponding tool-assembling strings having a plurality of section codes, wherein the plurality of analyzed results include types, specifications, tip directions and postures of the cutting tools;
• a step-decoding module, installed in the computer, being to read the NC program and obtain a plurality of tool demands from the plurality of sequential machining steps, converting the plurality of tool demands into a plurality of corresponding stepwise tool-demanding strings having a plurality of section codes, wherein the plurality of tool demands include numbered tool holder, types, specifications, tip directions and postures of the cutting tools, and each of the plurality of section codes of the tool-assembling strings corresponds to one of the section codes of the stepwise tool-demanding strings;
• and
• a matching and comparing module, installed in the computer, being to perform matching upon the plurality of tool-assembling strings and the plurality of stepwise tool-demanding strings, further to generate and output a plurality of corresponding step-and-tool matching strings by:
• for each respective stepwise tool-demanding string of the plurality of stepwise tool-demanding strings, retrieving, from the plurality of section codes of the respective stepwise tool-demanding string, a tool holder section code representing a tool holder number of one of the plurality of numbered tool holders;
• determining, among the plurality of tool-assembling strings, whether any of the plurality of tool-assembling strings has a corresponding tool holder section code representing the same tool holder number;
• in response to determining that a respective tool-assembling string of the plurality of tool-assembling strings has the corresponding tool holder section code representing the same tool holder number, calculating differences between the other section codes of the respective tool-assembling string and the corresponding section codes of the respective stepwise tool-demanding string, and integrating the differences to obtain a respective step-and-tool matching string of the plurality of step-and-tool matching strings;
• and
• outputting the plurality of step-and-tool matching strings.