CNC machining, as a typical technology of advanced manufacturing

Published In the 21st century, CNC machining, as a typical technology of advanced manufacturing, should reflect the scientific and service-oriented of manufacturing technology with the globalization of the market, the intensification of competition, the individuation of demand and the humanity of production. At present, due to the low utilization rate and low utilization rate of NC machine tools, the numerical control resources are greatly wasted, which hinders the competitiveness of enterprises and weakens the advantages of advanced manufacturing.

The use of CNC machine tools is not a simple use of equipment, but a system with a certain scale of application engineering boxing kangaroo punch. Not only in the numerical control system hardware and software technology to improve the reliability and stability, but also in the production mode change. The development of network technology provides an opportunity for CNC technology transformation. It can connect enterprises with different NC resources in the global manufacturing environment, exchange information, share resources and cooperate with each other to improve production capacity. A network of CNC machining technology The use of network communication technology, the establishment of network-oriented CNC machining system, to achieve online design, online manufacturing, online monitoring online training, online marketing and online management functions, advanced manufacturing equipment to better play its Role, not only can improve the quality of the product processing and production efficiency, but also quick response to the transient market. To this end, we analyze the entire process of CNC machining, which can be divided into 8 functional links, such as CAD CAPPCAMMRP (material management plan) PDM (product data management) virtual manufacturing (VM) remote control (CAE tool wear monitoring and so on) and fault diagnosis . In order to make the NC machine tool and the network connect into a complete system, we need to form the above functional modules, not only to realize the integration with the network, to establish the advanced manufacturing Extranet (Internet), but also to achieve between the functional modules Related connections and the network within the module, the establishment of advanced manufacturing Intranet (Intranet). The key technologies include: the establishment of three-dimensional visual environment of collaborative design in different places; network publishing and browsing of product graphics and simulation results; network transmission of NC codes; network optimization and transmission of process parameters; remote process monitoring model; product model data Modify; remote design and manufacture of product model data management system; security mechanism. In addition, the network manufacturing relative to the traditional manufacturing is another advantage of technology can be instantly communicate across time and space network communication mechanism.

2 NC machining of the basic framework of the product geometry modeling - process parameter analysis - tool path generation - NC code transmission - NC processing examples - - - - - - - - - - - - - - - - - - - - - Consider the physical factors involved in CNC machining, such as material flow, product data management, cutting force and vibration, wear and accuracy. Only in the network environment to achieve the basic work of CNC machining, it is possible to carry out other operations of the network research. The basic work is mainly to achieve the following objectives: the product geometric modeling dynamically released on the Internet, allowing users to quickly and accurately browse to their desired design, and can be modified interactively. The optimized parameters of the process parameters were realized, and the optimized model was set up with the aim of optimization and machining speed respectively. According to ab results automatically generate NC code and tool path, NC code to achieve automatic generation and remote transmission, for product processing. The application of virtual manufacturing technology combined with the network to achieve the NC machining process simulation, can be off-site verification of the correctness of NC code pack a punch zetsubou no shima. E through the above work on-site examples of processing. F. If there is any doubt in the above link, you can consult with each other through the online communication module. The basic framework of networked CNC machining is shown as follows: It is based on Internet technology, which links every link of NC machining basic work with the network. With the global distribution of Internet, the networked manufacturing environment of NC machining is constructed. The formation of the environment to lay the foundation. 3 Example a. Product geometric modeling of the network production. Pro / E software is used to realize the 3D geometric modeling of the milling products, embedded in the VRML browser, and browse the WRL graphic files exported by Pro / E. In order to realize the Web browsing of the WRL file, you must install the VRML browser VRML2C or CosmoHayer. The product graphical Web browsing page realized by using the VRML2C browsing tool, which can translate, rotate and simulate the camera in the web page by using the four buttons Of the zoom and turn and other operations. The Making of the Path of Cutting Tool Path. Pro / E software is used to realize the tool path of product processing, and then it is converted into bitmap format. Web publishing and browsing of the path of tool path is realized by inserting image in Web page. NC processing network production. Pro / E software is used to produce 3D geometric simulation graphics and convert it to Web-supported bitmap animation. The use of media capture technology, capture Pro / E CAM system in the production process punch quilting zone, the formation of avi video files, embedded in the set of Web pages to complete the NC machining simulation of the network browser can be used for processing traces of online verification . Online communication. Use the upload and download technology to complete online communication. As a client user access to the Web page, there must be inconsistent with their own design, where the need for timely communication. Users can instantly capture CAD / CAM graphics Web page, in the above to complete their own labels or recommendations, according to their need to identify the file saved, and then online delivery, complete the rapid exchange. 4 processing technology of the network is the future development trend of advanced manufacturing industry. By analyzing the composition of networked NC machining technology, the basic framework of networked CNC machining is put forward, and the possibility of networked manufacturing of NC machining is verified through the demonstration.