Numerical control machine tool is short for computer control machine tool, it is a kind of program control system of automation machine tools. This control system is able to handle the logic control code or other symbols in accordance with procedures prescribed by the instruction, and the decoding, with coding numbers show, get through information carrier input numerical control device. By computing the numerical control device sends out various control signals, control machine tool movements, according to the shape and size of the drawing requirements, automatically processing parts.
According to the process uses, machine tool can be divided into numerical control lathe, numerical control drilling machine, numerical control milling machine, numerical control grinding machine, numerical control boring machine, etc. these machine tools are suitable for single piece, small batch and many varieties parts processing.
According to the motion control mode, can be divided into the point location control, line motion control and contouring control. Point location control numerical control machine tool has characteristics of machine tool moving parts can be achieved only from one location to another location precision motion. Line motion control numerical control machine tool has characteristics of machine tool moving parts can not only realize a coordinate location to another location of the precision moving and positioning, and can realize parallel to the coordinate axis linear feed movement or control two coordinate axis realize oblique line feed movement. Contouring control numerical control machine tool has characteristics of machine tool moving parts can be achieve two ordinate axis proceed gang control at the same time.
According to control mode, can be divided into open loop control, which is not to bring a position feedback device control mode. Half closed loop control, w is on the open loop control servo motor shaft equipped with angular displacement detection device. Closed loop control, that is in the machine tool final moving parts corresponding position directly linear or rotary detection device.
Although numerical control machine tool has many types, they have common features. Such as: process precision is high, has the stable machining quality, processing complex shape parts; Numerical control machine tool has high precision itself, big rigidity, can choose favorable processing dosage; Numerical control machine tool automation degree is high, it can increase productivity, and reduce labor intensity, but the quality of operation personnel and the technical requirements of maintenance personnel are higher.
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Numerical control machine tool introduction, Numerical control machine tool working principle, Numerical control machine tool classification, Numerical control machine tool characteristic, Numerical control machine tool application