CNC punch press the programming system, in the choice of tools, to take into account the tool type, size and so on. In the case of the tool type, it is necessary to consider whether the selected tool conforms to the punching shape. For example, when a single hole punch or arc punch is used, a rectangular tool or square knife can not be selected. Only a round knife can be selected. Single rectangular hole punching, you can only choose a rectangular tool or square knife, according to the shape and type of punch to select the type of tool.

The tool size should be chosen in the same way as the punching size. For example, when selecting a single punch with a single round hole, the tool size should be the same size as the hole, and the tool size should be smaller than the hole size. When the tool selection is made, the system adds a simple intelligent control function to help the user check whether the tool selection is correct. If the tool or tool type is not selected, the parameter selection is wrong. The system will prompt the user to select the tool again.

The punching of the hole is usually a single punch and step back two ways. When machining large holes with small molds, it is usually formed by continuous trajectories of overlapping perforations, enveloping the machined contours of the desired shape, and then taking (blanking) or discarding (holes in processing) On the red down the material, to achieve the purpose of processing, which is a relatively simple and easy to implement the method.

But in the hole processing because of automatic nesting more difficult, the existence of residual materials can easily lead to equipment failure, affecting the efficiency. On the basis of the two kinds of punching methods, the system increases the method of machining large holes without leaving the residual material, that is, the method of middle breaking, which has good practical effect, The center of the hole begins, from inside to outside, until the holes are needed.