Automatic Programming Of The Graphics Parameters Of Gear Processing Systems Development And Research

This thesis is going to discuss and analyze the significance, position as well as the constitution of the automatic program for gear NC machining, and then it's going to give a detailed introduction of the sketch parameter method of program for gear machining tool CNC system and the function realization and data structure of coding system, furthermore, it's going to set up an automatic program system based on sketch parameter for gear NC machining by mean of the develop tool of Visual C++6.0.Aiming at gear NC machining, this program system studies several aspects of the systematic structures of the automatic program for gear NC machining, including geometry structure, CL calculation, NC post as well as file editor. To start with the analysis and study of the gear mesh principle; this paper establishes the mathematics model of involute outline of the gear gradually. Meanwhile, the adoption of the facing object technician realizes the complicated 3D construction of the gear teeth. What's more, by using 3D drawing software, the system finishes the structure design and the whole structure of the gear automatically according to the parameter inputted or calculated and after that it directly produces a 3D sketch of a part in this given drawing environment so as to be used in the later work. Through the analysis of the lineal approach method employed in dealing with the tolerance of the most common and complicated gear teeth, interpolation is figured out as well s the CL calculation. Besides, it makes some research on the match principle and the auto program for the NC machining toward the curved gear and it also gives some introduction of the ideas of exploring the NC program system for the curved gear. In a word, by using commonly practiced NC post model, the application of the system is expanded; by adopting open and standard data base, the communication between sketch base and data base is simplified, which provides a friendly integrated system face in which inter-consultation can be done in Chinese in the microcomputer environment. Also, it guarantees the maintenance and renewal of the knowledge and discusses the set up and amalgamation of the expert base.Finally, this paper discusses and predicts the research trend of the gear NC machining technique so as to be used in the later research.