Multifunctional lamp posts nc machining technology, A)

Nc machining ( 数控加工) , it is to point to in the numerical control machine tool parts processing on a process of numerical control machine tool and traditional machining process planning in general is consistent, but also significant changes have taken place. With digital letter

refers to the numerical control processing on the CNC machine processing method of machining parts. In general, numerical control machine tool and traditional machining process is consistent, but also significant changes have taken place. Displacement of a control part and the tool with digital information processing method. It is a solution to many varieties, small batch and complex shape parts, high precision, high efficiency, automation processing of effective way. Explanation:

the nc machining issue instructions refers to the control system, to conform to the requirements of sports make the cutting tool, workpiece shape and size and other technical requirements and processing requirements expressed in the form of Numbers and letters. It usually refers to the process of machining parts in the nc machine. Nc machine tool is composed of the computer control of machine tools. Computer is used to control machine tools, special-purpose computer and general computer, are referred to as the numerical control system. By the numerical control system with auxiliary motion of the nc machine tool movement and the directives issued by the control. Numerical control system of instruction by the programmer according to the requirements of the workpiece material, processing, the characteristics of the machine tool and the system stipulated by the instruction format ( Numerical control language or symbols) To write. Numerical control system according to the program instructions to the servo device operation or termination for sending information and other features, in order to control the movement of the machine tool. After the completion of the parts processing, machine will stop automatically. Any kind of nc machine tools in the numerical control system cannot work without input program instructions. Machine tool control action is roughly include the start and stop the machine. Spindle start-stop, direction of rotation and speed change; Feed movement direction, speed and mode; Cutting tool selection, the length and radius compensation; Open and close tool change, coolant, etc. Background: numerical control technology is the result of airlines industry needs. In the late 1940 s, a U. S. helicopter company this scheme is proposed. In 1952, the Massachusetts institute of technology have developed a three coordinate nc milling machine. In the mid - 1950 - s, the numerical control milling machine has been used to aircraft parts. In the 1960 s, the numerical control system and programming is becoming more and more mature and perfect. Nc machine tool has been used in various industrial sectors, but the aerospace industry has been the biggest users of nc machine tools. Some large aviation factory equipped with hundreds of nc machine tool, which is given priority to with cutting machine. Nc machining of aircraft and rocket parts including the whole wall plate, girders, envelope, gasket, propeller, as well as the liquid rocket engine combustion chamber shell, the shaft, disc, leaf mold cavity and special. At the beginning of the nc machine tool development, mainly adopts continuous path of nc machine tool, and USES the continuous path control. Continuous path control, also known as profile control, it requires that the tools based on the specified path relative to the moving parts. After that, we will vigorously FaZhanDian to point control of nc machine tools. Point-to-point control means that the tool moving from one point to another point, as long as it eventually precisely target, regardless of how mobile route. Operation process: CNC programming of nc machining programming methods including manual programming and automatic programming. The entire content of the manual programming, the program is based on the numerical control system specified in the instruction manual written format. Is computer programming, automatic programming can be divided into automatic programming method based on language and painting. Either automatic programming methods, however, requires the support of the corresponding hardware and software. Obviously, the realization of the nc machining programming is the key. However, it is not enough to programming. Also includes the nc machining programming must be done before late after a series of preparations and programming of maintenance work. In general, the nc machining process mainly includes the following content: