The reference of numerical control machine tool simulation in numerical control teaching

introduction

With the wide application of CNC machining in the mechanical manufacturing industry, a large amount of training for CNC operators has become an urgent problem. In the traditional operation training, the effective training of NC programming and operation must be carried out on the actual machine tool, which takes up the processing time of the equipment and has risks. Misoperations in the training often lead to damage of expensive equipment.

With the development of computing technology, especially the development of virtual reality technology and concepts, a computer simulation training system that can simulate the actual equipment processing environment and its working state is generated. It uses computer simulation training system for training, which not only can quickly improve the quality of the operator, but also is safe, reliable and low cost.

Similar to science fiction, the combination of imagination and technology creates virtual reality. Bacon’s sci-fi story of a horseless car and powered machinery written in the 13th century is an early testimony to this combination. Verne wrote the prophetic science fiction of rockets and submarines in the 19th century, especially some sci-fi writers. The various assumptions that have been made to take advantage of the basic concepts of virtual reality are gradually becoming concrete. Several technical milestones built in the last century made virtual reality possible, telephone, radio, television, semiconductor triodes and integrated circuits (microprocessor chips) and liquid crystal displays. Especially the rapid development of computer technology. Some early simulation attempts (such as the first flight simulator, stereoscopic movies, video games, etc.) have become the pioneers of today's virtual reality simulation. Of course, the development of virtual reality technology is inseparable from the booming of electronics and the computer industry.

At present, there are a few institutions of higher learning in China that have initially applied computer simulation to the teaching of numerical control operation personnel training, and also produced various simulation teaching systems. These teaching systems can run independently on a stand-alone system and online. The independent operation means the machine model. The training facility only needs one microcomputer. The simulation operation of the CNC machine is performed on the simulation panel displayed on the display screen. The part cutting process is simulated by the machine model Three-dimensional animation. The initial training in this way is Cost-effective; online operation means the machine tool. In this way, the teaching system will be connected with the actual machine tool, and the hardware will realize the part cutting process. In addition to the operator operating with the simulation panel, the actual situation with the actual machine tool. Similarly, simply using a computer and other specialized hardware software to generate a simulation of a real scene, participants can experience a feeling close to the real scene by interacting with the simulation scene. Therefore, the actual work skills of the operator can be further trained.

The core of the CNC simulation system is the virtual CNC machine tool, and the virtual CNC machine tool is an execution unit in the virtual manufacturing technology. It not only provides manufacturability analysis for product design in the NC machining process, but also learns in the CNC system. During the training, we provided comprehensive learning and training for all types of schools and enterprise technicians. This type of system completely simulates the cutting process of the part, can verify the correctness of the NC command, and provides a full set of functions such as debugging, editing, modification and tracking execution.

1 virtual CNC system function

The virtual CNC machine is actually a model of a CNC machine in a virtual environment. Compared to real machine tools, virtual CNC machines should have the following features:

• The virtual CNC machine should have exactly the same structure as the real machine. Virtual CNC machine tools can mimic any function of a real machine tool without causing distortion or loss of certain structures and information due to some kind of approximate substitution. It should have the same interface style as real machine tools, and provide training and training for technicians. Guarantee.

· The powerful network function of virtual CNC machine tools provides possibilities for distance education.

· Complete graphics and standard data interfaces. Users can run virtual machines in real-world environments, observe various travel parameters, and interface with other CAD/CAM software.

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