Abstract: To solve the problem of misusing cutting tools,fixtures and workpieces in the machining process of a smart hobbing machine,a method to check the matching of cutting tool,fixture and workpiece to a machining task is proposed .Based on this method,the framework of the Identification and Matching System of Cutting tools,Fixtures and Workpieces (IMS-CFW) for a smart hobbing machine is constructed.Some identification and control technologies of realizing system functions are studied.An identification method based on laser-marked 2D barcode and Radio Frequency Identification(RFID) is adopted for creating electronic tags.To solve the interference and collision problems in reading electronic information automatically,here are proposed a positioning control method of RFID read-write head reading the fixture information based on fuzzy self-tuning PID algorithm and a rotating control method of cutter bar’s or fixture’s axis based on the time of RFID device reading information.Finally,an IMS-CFW is developed.The machining experiments show that the system can solve the misuse problem,reduce preparation time and improve machining efficiency,which is practically worthy of industrial promotion.

Key words: cutting tools identification, RFID, matching and verification method, fuzzy self-tuning PID algorithm