Planning and development of numerical control programming

"CNC EQUIPMENT Programming" is a basic course for numerical control majors required for training engineering and technical personnel. It is also a professional basic course for CNC application technology and many other electromechanical majors. The task of this course is to let students understand the structure of CNC machine tools, master the use of common CNC machine tools, and skillfully perform manual programming.

At present, under the demand situation of high-speed growth of CNC machining in domestic manufacturing industry, there is a serious shortage of CNC programming technology talents. Skilled in CNC programming technology and technical personnel has become a hot spot in the job market. In order to enable students to learn this course, they will be able to Successfully embarked on the job, the author has the following experience in the long-term teaching according to the characteristics of this course, for your reference.

1 Inspiring students' interest in learning Nowadays, students generally reflect that they have difficulty in learning professional courses, and they are struggling to learn. This has a lot to do with our teaching methods. Many schools now use the past one mouth, one book, one blackboard, A traditional teaching method of chalk, students can not form a perceptual knowledge of the knowledge they have learned, and gradually lose confidence in learning. Therefore, we must first stimulate students' interest in learning. We can use recordings, slides, videos, TVs, especially multimedia computers to demonstrate some principles and processing, and strengthen the original boring teaching process vividly and vividly. Students also have an understanding of the knowledge they have learned. At the same time, they also use the simulation software of NC machining to simulate the NC program compiled by the students, and directly display the processing process, so that the teaching is intuitive and visual, and the students' sense of achievement is greatly improved. The students' interest in learning makes them feel that NC programming is not only easy to understand, easy to learn, but also practical, so it will have a strong interest in "CNC Programming". It is not difficult to learn this course well. The use of multimedia courseware to teach the "CNC Programming" course can also reduce the burden on students and improve classroom utilization. The traditional teaching method is generally taught by the teacher, and the students take notes below.

Some students often take notes and take care of the lectures. They often take a class and have a lot of notes, but their minds are blank. Students use multimedia courseware to teach, students do not need to take notes, just concentrate on listening to the class, copy the electronic lesson plan after class, it is very easy to review, and the amount of multimedia courseware is also very rich, can also solve the problem of lack of class. In addition, the traditional teaching method not only requires a lot of time for the blackboard, but also the classroom atmosphere is rather dull, and the teaching effect is also poor. However, using multimedia courseware to teach, it will greatly save classroom teaching time and improve classroom utilization.

2 Due to teaching, the teaching content of the "CNC Equipment Programming" is mainly composed of computer numerical control system, CNC machine tool mechanical mechanism, numerical control programming and so on. Due to the rapid development of numerical control technology, the course of "CNC Programming" should closely follow the development of numerical control technology. Teachers should pass on the new knowledge and new technology related to the application of numerical control technology to students in the teaching. The textbook should explain the basic concepts and basic principles, and should delete some complicated calculation process and some outdated teaching contents.

For example, since automatic programming has been widely used in numerical control programming, the mathematical processing of some complex curves in the textbook can be compressed. Since vocational school students are mainly trained in skills, it is necessary to be too theoretical. The content of the post is less practical, and the practical and skillful teaching content is highlighted. In this way, the arrangement of the teaching content of the "CNC Equipment Programming" course can be more systematic, complete and scientific.

3 to increase the intensity of practical teaching needs to point out that practical experience is an important part of CNC programming technology, can only be obtained through actual processing, which is impossible to replace any CNC machining training materials. Although some textbooks are closely integrated with practice, it should be said that changes in process factors produced in different processing environments are difficult to express in writing. Therefore, in order to meet the requirements of CNC technology and other mechanical majors for this course, it is necessary to establish a step-by-step practical teaching system for this course, namely CNC machine tool structure and programming experiment - CNC machine tool operation training - comprehensive practical training.

The course experiment mainly introduces the numerical control machine tool structure experiment, so that students can understand the mechanical structure of the CNC machine tool, and at the same time open the experiment of NC programming, including 1 manual programming: each student has a simulation programmer to complete the CNC lathe and milling machine programming training. 2 computer-aided programming (automatic programming). Each student has a computer and supporting CAD/CAM software to complete the automatic programming training of complex shape parts. Through programming training, students can master the methods and techniques of NC programming.

CNC machine tool operation training for students to carry out practical operation training of CNC lathe, milling machine and machining center, so that students can master the program input of CNC machine tools, machining center, tool parameter setting, machine tool adjustment, machine tool maintenance knowledge, so that students can operate CNC machine tools and process Develop qualified parts, train students to operate the basic skills of machine tools, comprehensive practice training, students choose medium-complexity parts, analyze part structure, formulate process, process route, select CNC machine tools, tools, fixtures, etc., prepare machining programs, do it yourself Process parts to cultivate students' ability to use the theoretical knowledge they have learned to solve practical problems.

4 Mastering learning methods and skills As with other knowledge and skills learning, mastering the correct learning methods plays an important role in improving the learning efficiency and quality of CNC programming technology. Therefore, in the teaching process, we must not only teach students relevant knowledge, but also teach them how to learn and develop good study habits. Here are some suggestions for programming learning: concentrate on fighting annihilation, in a short period of time. Focus on completing a learning goal and apply it in a timely manner to avoid marathon learning.

From the very beginning, we have focused on cultivating normative operating habits and cultivating rigorous and meticulous work styles. This is often more important than simply learning technology. Recording the problems, mistakes and learning points that are usually encountered, this process of accumulation is a process of continuous improvement. Reasonable classification of software functions not only improves memory efficiency, but also helps to grasp the application of software functions as a whole.

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