CNC machining centering locomotive milling

The composition of CNC machine tools

CNC machine tools set machine tools, computers, motors and drag, dynamic control, detection, and other technologies as one of the automation equipment. The basic composition of the NC machine tool includes control medium, NC device, servo system, feedback device, and machine tool body.

1, control medium

Custom cnc machining control medium is the medium that stores all the action tools relative to the workpiece position information which the numerical control processing needs, it records the processing procedure of the spare parts, therefore, the control medium is the information carrier that the spare parts processing information is transmitted to the numerical control device. There are many forms of control media, it is different with different types of NUMERICAL control devices, commonly used are perforated tape, perforated card, tape, disk, and so on. With the development of numerical control technology, perforated tape, perforated card tends to be eliminated, and the use of CAD/CAM software in computer programming, and then through the computer and numerical control system communication, the program and data directly transmitted to numerical control device method is more and more widely used.

2. Numerical control device

The numerical control device is the core of numerical control machine tools, people known as the "central system". Modern CNC machine tools use computer numerical control device CNC, NUMERICAL control device including input device and central processing unit (CPU) and output device can complete information input, storage, transformation, interpolation operation and achieve a variety of control functions.

3. Servo system

Custom part machining Servo system is the driving component that receives the instruction of numerical control device and drives the movement of the machine tool actuator. It includes a spindle drive unit, feed drive unit, spindle motor, and feed motor, etc. When working, the servo system accepts the command information of the NUMERICAL control system, and compares the requirements of the command information with the position and speed feedback signals to drive the moving parts or executive parts of the machine tool, and processes the parts that meet the requirements of the drawings.

4. Feedback device

The feedback device is composed of measuring components and the corresponding circuit, its role is to detect speed and displacement, and feedback information back to form a closed-loop control. Some precision, not high CNC machine tools, there is no feedback device, called open-loop system.

5. Machine tool body

The machine tool body is the entity of the CNC machine tool, is to complete the actual cutting of the mechanical part, it includes the bed, base, table, bed saddle, spindle, etc.

The characteristics of CNC processing technology

CNC processing technology also complies with the law of machining cutting, and the common machine tool processing technology is roughly the same. Because it is the computer control technology applied to mechanical processing in a kind of automatic processing, thus has high processing efficiency, high precision characteristics, processing technology has its unique place, the process is more complex, work step arrangement is more detailed and thorough.

The CNC machining process includes the selection of cutting tools, the determination of cutting parameters, and the design of the cutting process route. CNC numerical control processing technology is the basis and core of numerical control programming, the only reasonable processes, can be programmed with high efficiency and a high-quality numerical control program. The numerical control program is measured by the minimum processing time, minimum tool loss, and the best results of the workpiece.

The CNC machining process is a part of the whole workpiece processing technology or even a process. It should cooperate with other processes before and after, in order to finally meet the assembly requirements of the overall machine or mold, so as to process qualified parts.

Numerical control processing processes are generally divided into rough processing, rough Angle processing, semi-finishing, and finishing, and other work steps.