The original tool magazine control program of Dongguan CNC machining plant is designed separately, without tool management system and single function. It only realizes tool searching, shortest path positioning and spindle tool changing, and does not support large tools.
In the aspect of automatic tool selection of tool magazine, Dongguan CNC machining plant adopts the characteristic function of Siemens 840D on the basis of computer memory tool selection, which makes the tool selection program more concise and completes the search of empty tool sleeve. The rapid tool change of tool magazine is programmed by step-7 and verified in practice. In the problem of tool magazine positioning, PLC program control adopts modular design method, which will be very beneficial to the production of similar machine tools in the future, and it is easy to use it to other machine tools. The automatic tool changing system will grow at a fast speed. It is an important means to shorten the tool changing time and improve the positioning accuracy of the tool, which is conducive to the development of numerical control technology.
The inventory of cutting tools and components in Dongguan CNC plant is an important part of modern production management, especially the management of large workshop. The traditional manual accounting management method is inefficient, high error rate, and information data can not be shared. The use status and life cycle of cutting tools can not be tracked, which can not meet the needs of current information management. Combined with the actual production, we establish a three-dimensional storage system of cutting tools in the workshop tool preparation room to meet the needs of the storage and management of workshop tools. The system adopts optimization technology and uses a large amount of inventory information stored by computer, which can reflect the inventory situation of tool library timely, accurately and comprehensively. The whole system of Dongguan CNC processing plant adopts graphic interface, and the man-machine dialogue is prompted by Chinese menu, which can realize the selection of various functions and the input of various information. The management system adopts online help function. Information management and sharing can be realized through workshop management and network system. It has the functions of automatic inventory management, tool stock in management, tool stock out management and statistical query.