The Basic Process and Attention of Programming for Vertical Machining Center

Vertical machining center is a new type of machining equipment whose machining process is controlled by CNC system. Its processing form is completely different from the traditional mode. When machining the workpiece, the machining center is no longer manually operated as before. Under the control of CNC system, it guides each mechanical part of the machine tool to automatically perform precision actions by sending processing instructions in real time through the control device. Thus, a series of high-precision and efficient machining processes of the workpiece can be realized, and the 3D space machining of complex surfaces and special-shaped contour surfaces can be finally realized.

The vertical machining center is equipped with a tool magazine and an automatic tool change device. Under the control of the CNC system, the automatic tool change device is controlled while controlling the simultaneous linkage processing of three or more axes of the machine tool by executing the processing program of the workpiece. According to the processing instructions issued by the control system, the device automatically grabs the tools stored in the tool magazine for automatic replacement, so as to realize the automatic transfer of processes. The biggest advantage of this type of processing is that the workpiece can be milled, drilled, bored, reamed and tapped in a centralized manner after only one clamping.

Programming of CNC System for Vertical Machining Center

1、 Basic Process of Programming for Vertical Machining Center

To put it simply, the programming process of the vertical machining center includes preparing well, selecting the programming method and finally programming. Let's take a look at the details.

1. First, make preparations for programming

Before preparing the workpiece processing program of the vertical machining center, first of all, you should have a deep understanding of the programming software and related equipment, master its operating skills, and then analyze the drawing and process requirements of the workpiece, so as to further clarify the processing content of the workpiece and the related process and accuracy requirements, and then determine a reasonable processing plan and select appropriate processing tools and fixtures. This step is the basis for the whole workpiece processing, If it is not handled properly, it may have an unexpected impact on the machining accuracy and efficiency of the later workpiece.

2. Select the appropriate programming method

The programming of vertical machining center can be divided into two methods: direct programming and computer aided programming. Direct programming, also known as manual programming, is to enter programs directly through the CNC panel of the machine tool. This programming method is suitable for workpieces with simple processing procedures and short programs.

However, a complete workpiece processing may involve tens of thousands of segments of processing programs. However, this manual programming is not only time-consuming and laborious, but also has a high error rate. We generally use computer aided programming, which is often referred to as automatic programming. This programming method is suitable for the whole process processing of complex workpieces. Because the processing program is automatically generated by the computer, this method not only saves time and labor, but also has a very low error rate.

Programming of Vertical Machining Center

3. Preparation of processing program

When the above two processes are completed, the preparation of the processing program is quite simple. However, the programming of the vertical machining center should follow the principle that one tool should process as much as possible, and less or no empty tool should be used.

Introduction to composition of processing program

2、 Matters needing attention in programming of vertical machining center

In order to ensure the machining efficiency of the vertical machining center and the final machining accuracy of the workpiece, the following aspects should be paid attention to when compiling the machining program.

1. The programming process of rough and finish machining shall be separated as far as possible. To improve the machining accuracy and production efficiency of the workpiece. The programmed size shall be determined according to the median value of the required size of the part, and the principle of coincidence of points shall be followed as far as possible.

2. The use of the pause command should be reasonable. Its main function is to pause the processing of the tool within a command time, which is more favorable in ensuring the processing accuracy, grooving and drilling change movement, but it should not be used too much. Excessive use may affect the processing efficiency of the vertical machining center.