Ordinary CNC milling machines also have a CNC operating system (such as FANUC, Siemens, China Huazhong or Guangshu, etc.), as well as three feed axes and a rotating spindle. Their processing mode geometry is exactly the same, and basically the same processing capabilities can be achieved.
The ideal CNC machining program should not only ensure that qualified workpieces conforming to the drawings are processed, but also should enable the functions of the CNC machine tool to be reasonably applied and fully utilized. The CNC machine tool is a highly efficient automation equipment. Its efficiency is 2 to 3 times higher than that of ordinary machine tools. Therefore, to give full play to this feature of CNC machine tools, one must master its performance, characteristics, and operating methods. At the same time, the machining plan must be correctly determined before programming.
CNC machining has become a major pillar of the manufacturing industry. This type of processing is used in more and more products (for example, CNC turning and CNC milling, engraving, cutting and drilling). Although many mechanics are accustomed to this form of processing, not everyone knows the logic behind it. Compared with other forms of machining, the main advantages of using CNC machining are as follows:
In the process of CNC machine tool parts processing, the accuracy of the parts processed directly affects the quality of the product itself. Some mechanical parts and compact equipment parts have very high requirements for machining accuracy. Improving the machining accuracy of CNC machine tools is the key to the problem. Through comparative research and analysis, the following countermeasures can be adopted:
CAXA wire cutting is a software system for CNC programming of wire cutting machine tools, which has a wide range of applications in the field of wire cutting processing in my country. It can provide fast, efficient, and high-quality CNC programming codes for various wire-cutting machine tools, greatly simplifying the work of CNC programmers. CAXA wire cutting can quickly and accurately complete tasks that are difficult to complete under traditional programming methods.
Virtual reality, as a new high-tech technology, has been widely used in many fields such as aviation, aerospace, and manufacturing. An important application of this technology is the simulation of some phenomena in the manufacturing industry. The most typical is the simulation of CNC machining process. At present, simulation technology based on surface modeling and solid modeling has been widely used in CNC simulation, and there are also good algorithms for single-sided machining simulation of three-axis CNC milling machines.
Before the 5-axis milling tool path design, the system accuracy of the CAD 3D model should be set as high as possible. Especially when model conversion between different CAD systems, CATIA (*.model) format and Parasolid (*.x_t) format are preferred for data conversion. Secondly, use IGES format for data conversion. When using the IGES format, the system accuracy should generally not be less than 0.01mm. Especially when performing five-axis high-speed cutting of precision parts, the accuracy of the model and the accuracy of tool interpolation have an important impact on the output of the tool path.
With the increase of complex surface design of parts in modern industry, 5-axis machining will account for an increasing proportion of CNC machining. As 5-axis CNC machining adds two degrees of freedom of rotation, it increases the difficulty of CNC machining motion simulation calculation and tool interference check, especially when machining parts with extremely complex shapes.
Path simulation of 5-axis high-speed milling
Because the tool path is more complicated during five-axis high-speed milling, and the tool axis vector changes frequently during the machining process. Especially in high-speed cutting, the tool movement speed is very fast, so it is very necessary to carry out the verification and review of the CNC program before the actual product cnc processing.
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