CNC Machining Advantages
CNC machining refers to the process of machining parts on CNC machine tools. A CNC machine tool is a machine tool controlled by a computer. The computer used to control the machine tool, whether it is a special computer or a general-purpose computer, is collectively called a CNC system. The movement and auxiliary actions of the CNC machine tool are controlled by the instructions issued by the CNC system. The instructions of the numerical control system are compiled by the programmer according to the material of the workpiece, the processing requirements, the characteristics of the machine tool, and the instruction format (numerical control language or symbols) prescribed by the system. The numerical control system sends out operation or termination information to the servo device and other functional components according to the program instructions to control various movements of the machine tool. When the part processing program ends, the machine tool will automatically stop. For any kind of CNC machine tool, if there is no program command input in the CNC system, the CNC machine tool cannot work.
The controlled actions of the machine tool roughly include the start and stop of the machine tool; the start and stop of the spindle, the transformation of the rotation direction and the speed; the direction, speed, and mode of the feed movement; the selection of the tool, the compensation of the length and the radius; the replacement of the tool, and the cooling The opening and closing of the liquid.
The programming method of NC machining can be divided into manual (manual) programming and automatic programming. Manual programming, the entire content of the program is manually written in accordance with the instruction format specified by the CNC system. Automatic programming is computer programming, which can be divided into automatic programming methods based on language and drawing. However, no matter what kind of automatic programming method is adopted, corresponding hardware and software are required.
It can be seen that the realization of NC machining programming is the key. But programming alone is not enough. CNC machining also includes a series of preparatory work that must be done before programming and the aftermath of programming. Generally speaking, the main contents of CNC machining process are as follows:
(1) Select and confirm the parts and contents for CNC machining;
(2) Process analysis of CNC machining of parts drawings;
(3) Process design of CNC machining;
(4) Mathematical processing of parts drawings;
(5) Compile the processing procedure list;
(6) Make the control medium according to the procedure list;
(7) Verification and modification of the program;
(8) First piece trial processing and on-site problem handling;
(9) The finalization and filing of CNC machining process documents.
