(2) Application method of CNC machining simulation system:
How to use this software for teaching, we mainly explore and practice from the following aspects in teaching.
1. Flexible application of teaching methods, passive learning for students in classroom teaching is active learning
Nowadays, because most students with good foundations choose to go to college, it is very difficult for teachers in vocational and technical schools to teach. The traditional teaching methods are difficult for students to accept. Therefore, using advanced teaching methods and teaching methods to improve students' interest in learning Particularly important. CNC professional teachers should have a high level of teaching and teaching ability, and have strong numerical control professional ability, namely, numerical control programming ability, process processing ability, practical hands-on ability, automatic programming ability, and can use the action-oriented teaching method more skillfully. Classroom teaching truly reflects the students as the main body, highlighting the students' active brain activities, and changing students' passive learning as active learning. In the teaching process, the teacher plays a guiding role, that is, guiding and explaining problems that are difficult or impossible to start in the student activities. In the classroom teaching, the knowledge points of each lesson are concentrated as much as possible, so that students can master the programming methods and techniques.
2. Appropriate use of CNC machining simulation system to give full play to its role in classroom teaching
The CNC machining simulation system is mainly used in the theoretical teaching course of numerical control programming and operation, and can also be used as an auxiliary tool for numerical control operation skill training. Teachers should attach great importance to the application of CNC machining simulation system in teaching, and position the NC machining simulation system in teaching. It can not completely rely on the CNC machining simulation system to abandon the guiding role of teachers in teaching, nor can it be in teaching. The teacher sings a one-man show using the conventional teaching mode and neglects the application of the numerical control machining simulation system, and should play the role of the numerical control machining simulation system in teaching scientifically and fully.
3. Scientifically arrange the teaching content, master the numerical control programming and operation skills step by step
The arrangement of teaching content in the teaching process is divided into three modules. The first one is the basic module, which mainly explains and trains the programming methods, operations and applications of CNC lathes, CNC milling machines and CNC machining centers in the most commonly used FANUC numerical control system. This module is the key point of teaching and must be mastered and flexibly applied by students. The second is to improve the module, mainly to explain and train the programming and operation of the three machine tools of SIEMENS CNC system, to help students further strengthen the understanding and application ability of different CNC machine tools in the numerical control system: Module 3 is to expand The module mainly explains the programming and operation methods of the CNC lathe in the CNC CNC system and the CNC lathe in the CNC system in China, expands the knowledge of the students, and improves the students' programming and operation capabilities for different operating systems and different operation panels. The teaching of these three modules can be arranged according to different levels of students. The level of technical secondary school is less difficult, the level of high-tech junior college is slightly more difficult, and the three modules have more classes. In this way, students can confidently face the CNC machine tools they operate when they are employed, and adapt to the work they are doing.
4. Correctly conduct teaching evaluation to improve students' learning awareness and consciousness
Teaching evaluations conducted during teaching include self-evaluation of students, evaluation of students and evaluation of teachers. When applying the CNC machining simulation system to the CNC programming and operation exercises, the teacher evaluation is the main task, and the performance of each exercise is registered in time. The evaluation method includes oral evaluation and test evaluation, and the test evaluation method includes subject evaluation and final evaluation. Teachers should pay attention to the choice of methods and language when making oral evaluations to students. Students who do not do well should not use direct criticism. They only point out where the students are doing well and which are not good. How to improve them? Poor students are called "weaker students." Classroom testing should have a strong purpose. It is not difficult for students, but through testing students to improve students' learning awareness, learning enthusiasm, learning consciousness and self-confidence. Therefore, test questions should be related to classroom teaching and teaching. The application requirements of the CNC machining simulation system are adapted. The pre-examination review should have a strong purpose and should not be out of scope. The overall evaluation of the course should not focus on the results of a final exam, but focus more and objectively on the learning outcomes of the students throughout the learning process. Teachers have a clear teaching purpose in teaching, and explain and arrange exercises on a system-by-system, machine-by-plant basis. It is just right for people to teach and teach students in accordance with their aptitude.
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