Analyze the use of CNC lathe imitation in practice
If we establish two CNC lathe internship venues for 40 internships, we need 40 CNC lathes for each internship position. Each CNC lathe will require 3.2 million equipment investment fees for 80,000 yuan. In 2002, our school established two 40-node simulation and simulation programming rooms. Each simulation programming room consists of a projector, 40 computers and a small server. A total investment of 400,000 yuan, it will be related to the simulation. Simulation software such as FANUC, SIEMENS, and Huazhong CNC simulation software exist in the computer. Students can select the corresponding simulation software to simulate the operation according to the CNC machine system they have learned, and project the learning process through the network. The teacher can be in the projection process. The simulation of each student is analyzed to let the students master the whole process of the CNC machine operation.
(1) Virtual reality uses simulation to carry out numerical control practice teaching, which can save a lot of internship funds and equipment investment fees for the school, and can intuitively and vividly imitate the whole operation process of the numerical control equipment, and dynamically complete the processing process, completely solving the students. The contradiction between multiple CNC equipment and insufficient student stations, students one-person and one-station, can practice at any time, quickly master the professional knowledge and operational skills, and play a multiplier role.
(II) Operational safety The use of computer simulation to carry out numerical control practice teaching operations is safer. The students' practical process, programming instructions and the route of the pass can be reflected in the simulation. Students can visually see their own processing technology and processing. The method is correct, and then the machine operation. It avoids the harm to the students themselves and the equipment caused by the students' mistakes. Students can boldly try a variety of choices, eliminate or reduce tension, and reduce the fear caused by tension in the early stages of the exercise.
(3) In the simulation, it is possible to design a variety of changes that may occur in actual work, including accidents, failures, and sudden occurrences that rarely occur in production, so that students can get comprehensive training in job skills. If the tool change point is set, if the tool is too close to the workpiece, the student can see the phenomenon that the tool hits the workpiece during the tool change during the simulation.
Reasonable use of software simulation, paying attention to the actual operation in the teaching process, we found that some students are complacent after writing through several procedures, thus relaxing learning and training, and finally can only get a half-solution result, seriously affecting the quality of teaching and wasting teaching. Resources. The root of this phenomenon is that the teacher did not understand the difference between software simulation and actual processing, the gap and management problems. It is necessary to understand that the difference and gap between software simulation and actual processing requires teachers to have the ability to combine teaching and production. With this ability, we can combine software simulation teaching with actual processing, learn from each other's strengths, learn from others, and effectively improve teaching efficiency.
Because there is still a gap between software simulation and actual operation, our CNC teaching can only use software simulation to carry out initial emotional training and basic program and instruction code exercises, but can not completely put the whole teaching activity on the software, which must be processed by actual software. There is enough attention. It is necessary to ensure that the software simulation teaching is fully utilized, and at the same time, to ensure that the actual operation status is authoritatively improved, the NC teaching can be effectively organized, and our CNC teaching is both scientific and objective, both efficient and practical.
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