[Cutting Item] Some knowledge about CNC engraving machine

Some knowledge about CNC engraving machine
With the development of science and technology, the introduction of advanced technology, technology continues to be applied to various industries, so that the industry’s technical costs, performance costs increased. Engraving machine from research and development to the current use, has been more than 10 years, technology is also constantly upgrading. As the core technology of engraving machine CNC technology, this technology is to allow engraving machines can successfully complete all kinds of ornate sculpture premise. So how do CNC engraving machines work? Why can we carve it according to a certain pattern? Although these are not important things for the people who buy the engraving machine, it is also possible to know them.
CNC engraving machine is a kind of automatic machine tool with program control system. It can make machine tools move and process parts according to the programmed program. Different types of CNC engraving machine on the sensor requirements are not the same, in general, large machine tools require high speed response, medium and high-precision CNC machine tools to the requirements of precision. Of course, in order to make various types of engraving machine can work faster and better, the need for CNC technology is constantly updated, this is more good for various types of precision engraving machine, up and down speed is not.
Due to the characteristics of high precision, high speed, high efficiency and safety, the CNC machine tools are rapidly gaining popularity in the manufacturing industry. Numerical control machine tool is a kind of automatic machine tool with program control system. It can make machine tool move and process parts according to the programmed program. It combines the latest technologies of machinery, automation, computers, measurement, microelectronics, and uses a variety of sensors. The performance of CNC engraving machine have, make some originally irrelevant and machine tool industries are in love with the machine, so has advertising engraving machine, woodworking engraving machine, stone carving a variety of new applications, engraving machine, relief materials etc.. Here are some of the knowledge of the sensor down.
1 sensor profiles
The sensor is a kind of feeling can be measured under the, and according to certain rules to convert the output signal of the device or devices available, the input signal (measured) is often non power, the output signal is often easy to processing power, such as voltage etc..
Many types of sensors, the classification standards are not the same, it is not the same, the resistance sensor, inductive sensor, capacitive sensor, temperature sensor, piezoelectric sensor, Holzer sensor, thermocouple sensor, photoelectric sensor, digital position sensors are common. The sensor used in NC machine tools include photoelectric encoder, grating, proximity switch, temperature sensor, Holzer sensor, current sensor, voltage sensor, pressure sensor, liquid level sensor, resolver inductosyn, speed sensor, mainly used to detect the position, linear displacement and angular displacement, velocity, pressure, temperature etc.. The application of sensors allows CNC engraving machines to transfer pictorial data to the carving section via a computer and then perform the operation. This also makes engraving machine more a title – computer engraving machine.
2 CNC machine tools requirements for sensors
(1) high reliability and strong anti-interference;
(2) to meet the requirements of accuracy and speed;
(3) easy to use and maintain, suitable for machine tool running environment;
(4) low cost.
Different types of CNC machine tools on the sensor requirements are not the same, in general, large machine tools require high speed response, medium and high-precision CNC machine tools to the requirements of precision. Of course, with the development of science and technology, this is not always such a positioning. Small and medium-sized engraving machine, if the configuration to keep up with it, although the price will be much higher, but relatively large models of engraving machine is still cheap, speed and accuracy are to a certain extent. So, if you want to buy a high-performance advertising engraving machine, do not have to buy large numbers, you can also choose a small model, and then configure a very good engraving machine.
3 displacement detection
The sensors for displacement detection include pulse encoder, linear grating, resolver, inductosyn and so on.
Application of 3.1 pulse encoder
Pulse encoder is a kind of angular displacement (speed) sensor, it can turn mechanical angle into electric pulse. Pulse encoder can be divided into three types: photoelectric, contact and electromagnetic, among which photoelectric applications are more.
The X axis and the Z shaft end are equipped with photoelectric encoders for angular displacement measurement and digital speed measurement. The angular displacement can indirectly reflect the linear displacement of the carriage or tool holder through the pitch of the screw.
3.2 application of linear grating
Linear grating is made by the transmission and reflection of light. It is commonly used in displacement measurement. It has higher resolution and higher measuring accuracy than photoelectric encoder, so it is suitable for dynamic measurement.
In the feed drive, the grating ruler is fixed on the bed, and the pulse signal directly reflects the actual position of the carriage. The servo system with grating to detect the position of the worktable is a full closed loop control system.
Application of 3.3 rotating transformer
A resolver is a kind of induction micromotor with continuous function between output voltage and angular displacement. The rotary transformer consists of stator and rotor, specifically, it consists of a core and two windings of a stator and two rotor windings, the primary and secondary windings are respectively arranged on the stator, rotor, electromagnetic coupling between the primary and secondary windings of the rotor and the relevant angle.