The appearance of the turning and milling machine tool not only greatly improved the automation level of the machine tool, but also realized the complete machining process of the complicated parts by one clamping, which also greatly improved the machining precision of the parts, saved the processing time, reduced the operator and shortened the operation. The logistics and intermediate turnover links reduce inventory and facilitate the realization of unitized production methods. Compound machine tools are not the end of machine tool development. The above is only the compounding of machining processes. In the future, machine tool automation will be developed in a wider direction. For example, adding quenching and grinding functions on machine tools can be realized directly from blank to finished product. Processing.
The machine tool is also developing in the direction of unmanned. In order to shorten the preparation time of the machine and improve the utilization rate of the machine tool, the machine has added an automatic pallet exchange device. In order to further improve the automation level of the machine tool and the unmanned working time, the number of pallets is also increased. In the increase, it can be from 2 up to 14 trays, this is the FMC (Flexible Manufacturing Unit). However, there is a limit to the increase in the number of trays for a single unit, and the types of parts to be processed are also limited. Then FMS (Flexible Manufacturing System) appeared again. This is based on the FMC, adding a material trolley for transporting pallets, a pallet storage station for storing pallets, a loading and unloading station for loading and unloading workpieces, and an auxiliary facility such as a washing machine to form a complete processing system, and this system can be conveniently The expansion of the ground, such as increasing the number of machine tools to expand the processing capacity, increase the number of pallet stations to increase the unmanned time, if the size of the site is limited, the pallet library can be made into two or even three or four layers. Stereo tray library. In addition to the number of pallet stations, the length of unmanned time is related to the number of tools and the function of tool life management. If you want to achieve mixed production of multiple varieties, you must have enough tools. The unmanned processing of time requires the life management of the tool. The life of the tool must be automatically accumulated. After the life is over, it is necessary to automatically replace the spare tool for processing. These require a large-capacity tool magazine. However, there is a limit to the capacity expansion of the tool magazine. Therefore, in order to achieve unmanned machining for a longer period of time, some FMSs are also equipped with a central tool magazine, and a special tool handling car is responsible for the machine tool magazine and the central tool magazine. Tool exchange between.
With the development of robot technology, the emergence of robots with vision systems, the unmanned level of machine tools has reached a new height. For example, Yamazaki Mazak has configured a robotic flexible production system to achieve 720h unmanned processing. .
In terms of control systems, new, more open, intelligent, networked systems are needed. The NC program is also developing in the direction of human-machine dialogue.
The programming of traditional G code programs not only requires programmers to have a wealth of process knowledge, but also requires a lot of programming and debugging time. It is very simple for man-machine conversational programming. The following is an example of MAZAK's MAZATROL 640 system to illustrate the functions and features of the intelligent networked system.
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