Application Research of CNC Machining Simulation System Software in Numerical Control Teaching and Identification

2. Change the original teaching content and methods, integrate the teaching content of the traditional machining professional, and enrich the essential teaching content related to CNC machining technology, supplemented by a series of computer-assisted multimedia teaching methods; Reform the teaching content and method of NC programming and operation course, change the traditional teaching method to the modern teaching method, and change the space-to-air programming to cultivate the comprehensive programming ability to test the programming effect instantly;

3. Abandon the demonstration programming, establish a programming system including conventional programming, comprehensive programming, design programming, practical programming, improve the students' brain-manual ability, and create a practical and creative medium- and high-level CNC programming. Lay a solid foundation with operational skills.

4. Broaden the employability of students so that they can quickly adapt to the operation or programming of CNC machine tools of different CNC systems of different enterprises. They have strong processing and on-site problem processing capabilities, and have strong computer design and manufacturing application capabilities.

Our specific approach is: to correctly determine the professional position of CNC machining application technology:

1) Positioning of professional positions in the field of CNC machining application technology:

The field of CNC machining application technology generally has the following professional positions: ordinary machine tools and CNC machine operators, CNC programming technicians, CNC equipment maintenance personnel, CNC equipment marketers, mold design and manufacturing personnel.

According to the research situation of the market demand of CNC talents, combined with the characteristics and positioning of Zhongji and secondary vocational, high-tech and higher vocational education, this major is mainly positioned as: the training adaptability is strong, the shortage is large, and there is certain processing. Process knowledge and CNC machining operations, programming skills and common machine tool operation skills, CAD drawing skills of "technical skills" talent.

Training Objectives: This professional field is oriented to the manufacturing industry, and cultivates the all-round development of morality, intelligence, body and beauty. It has the cultural level and quality that suits the direction of the professional field, good professional ethics and innovative spirit, and masters the direction of this professional field. Technical knowledge, with corresponding practical skills and strong practical work ability, master the working principle and structure knowledge of CNC machine tools, master the characteristics of the main CNC system, have certain knowledge of CNC machining process, have ordinary machine tool operation, operation of CNC machine tools, manual Programming, automatic programming, CAD drawing capabilities.

Occupational orientation: The main employment positions are: CNC machining process and NC machining program preparation; CNC machine tool operation

2) Determination of the teaching mode of NC machining application technology: The teaching mode of NC machining application technology should be the same as the traditional machining profession, and it is different from the new teaching mode. In the application of the teaching mode, we comprehensively refer to the German education model. Germany does not have the application of CNC technology, they are collectively referred to as metal cutting technicians. CNC technology requires the corresponding theoretical knowledge and metalworking experience and skills as the basis. Therefore, in addition to completing the courses of professional drawing, professional mathematics, mechanism technology, metal technology and other courses, students must complete a large number of machining internships such as fitter, turner and milling before learning CNC technology.

Third, the application of CNC machining simulation system in teaching

(1) Selection of CNC machining simulation system:

The CNC machining simulation system has many software forms, some of which are the simulation system of the CNC machine tool itself. However, the simulation system of this CNC machine tool has limited limitations in teaching, which is not suitable for teacher teaching and student training. There are some pre-patterning and then automatic Programming simulation software does not meet the requirements of manual programming teaching. There are several other CNC machining simulation software in China, but there are some unsatisfactory things. After several comparisons, we finally chose the teaching software of Shanghai Yulong CNC machining simulation system. The software is a virtual reality-based simulation software from the United States. It is a valuable teaching aid that can simulate the whole process of CNC milling machines, CNC machining centers and CNC lathe machining parts, including blank definition and fixture. Tool definition and selection, part reference measurement and setting, CNC program input, editing and debugging, with FANUC numerical control system, SIEMENS numerical control system, Huazhong CNC system, Guangzhou CNC system and other CNC systems, with multiple systems, multiple machine tools, multiple parts The processing simulation simulation function, the software is original, reaching the international and domestic leading level.

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