In the aerospace manufacturing enterprises, the application and development of CNC manufacturing technology is very fast. In order to meet the market demand and be in line with international standards, research has been carried out to improve the comprehensive technology of CNC machining efficiency. Most enterprises have established CNC workshops (or centers). With 30-70 CNC equipment and a certain number of machining centers, the auxiliary equipment has been improved and a certain scale of production capacity has been formed.
From NC and CNC to DNC, the CNC system and the computer are organically linked. The NC machining program and control commands can be directly loaded and loaded into the CNC machine. The operation of the DNC system is carried out on the computer, and the DNC is passed under the network support environment. The system can be connected to production management, tool management and other systems for data and information exchange.
In order to improve the mixed flow production of multi-variety and small batch parts, FMS has been developed. Compared with DNC, the main features of FMS are: automatic logistics transportation system, material management, tool management and parts measurement, parts loading, material transportation, etc. The process flow and material flow in the process are integrated with the production management unit controller and the processing station. Later, FMC technology was developed. Based on the machining center, FMC uses the machining center as a manufacturing island. In addition to the function of DNC, it can also carry out parts loading and automatic tool change on the machining center with pallet changer. For the knife, some also have a part measurement function.
From the research and application of FMT, the application and promotion of fully automated FMS is very difficult. In addition to the limitations of funding and time, there are restrictions on equipment, management, process, personnel, technology, etc. Construct a moderately automated integrated manufacturing system with people involved and integrated with information integration to meet the needs of multi-variety and small-volume product production and market dynamics.
(Finish)
Many home remodeling or building projects leave behind a surplus of discarded or extra materials.
In many cases this material can be resold or simply thrown away,
but copper wire is valuable as scrap metal and can be recycled to provide a few extra dollars and to help the environment.
However, most copper wire is insulated with plastic sheeting and sometimes must be stripped before it can be taken to the local recycling center.
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