CNC wire Cut EDM machine cutting sample
In the thread processing because of no residual stress, high processing efficiency and other advantages are widely used in mold industry and aerospace field. The workpiece in the thread cutting process includes the steps such as the ladder hole, the wedge table, the circle and the ellipse. The thickness of the workpiece will change continuously or abruptly along with the processing. In fact, without changing the processing parameters of the case, with the workpiece thickness decreases, the servo processing speed will gradually become faster, resulting in discharge concentration, and prone to broken wire phenomenon; the other hand, the workpiece thickness increases, the servo processing speed will Gradually slow down, resulting in reduced processing efficiency. Therefore, when the workpiece thickness changes during processing, how to make the machine servo feed speed with the workpiece thickness changes in a desired range, is to ensure that the wire cutting processing accuracy and processing efficiency of the important prerequisite, and online identification of the workpiece Thickness is the problem.
In recent years, scholars have done a lot of research on the identification of the thickness of wire cutting workpiece. For example, the ability of the pulsating power source, the use of erosion of the material volume and discharge energy ratio of the specific discharge energy concept, the establishment of a workpiece thickness, processing speed and discharge frequency between the data model is suitable for predicting the thickness of the workpiece changes little Wire cutting processing.
The feed vector, the feed rate and the pulse interval are chosen as the input, and the support vector regression model of workpiece thickness identification is established to predict the workpiece thickness more accurately. At present, the research on the thickness of the wire cutting thickness is mainly in the one-way wire cutting machine (walking machine), and the workpiece thickness identification is mainly based on the use of energy pulse power in the wire cutting process in the discharge frequency, pulse interval , Feed rate and other factors to predict the model to achieve the workpiece thickness prediction. But these models are based on the establishment of the line cutting gap in the case of the same, and tie the actual processing process, the different processing parameters generated by the line cutting width is changing. At the same time, the type of pulsed power supply is not only a kind of energy pulse power supply, which has caused the limitations of the current technology.
Above for the "walking thread cutting can achieve automatic identification of workpiece thickness," the introduction, but so far, can only be achieved in the walking machine. Suzhou Hanqi is a professional manufacturer of wire machine tools, technical cooperation with the Swiss company, machine tool accuracy can guarantee 10 years!