In the update of manufacturing technology and equipment, CNC machine tools are rapidly gaining popularity in enterprises, which stems from its high precision, high speed, high efficiency and safe and reliable characteristics. The CNC machine tool can make the machine tool move and process parts according to the programmed programIt is an automatic machine tool equipped with a program control system. It uses a variety of sensors and integrates new technologies such as machinery, automation, computers, measurement, and microelectronics. Let's find out with Xin Jingcheng.
A sensor is a detection device that meets the requirements of information transmission, processing, storage, display, recording and control. Generally, it is composed of three parts: sensitive components, conversion components, and basic conversion circuitsIt can perceive the measured information, and convert the sensing information into electrical signals or other required forms of information output according to certain rules.
A sensor is capable of detecting and sensing physical conditions (e.g., light, heat, humidity), chemical composition (e.g., smoke), or signals from the outside world, and is a physical device or biological part, and transmits the detected information to other devices or parts. It usually consists of a sensitive element and a conversion element.
The sensor is a kind of detection device that can perceive the measured information, in order to meet the requirements of information transmission, processing, storage, display, recording and control, the measured information is converted into electrical signals or other required forms of information output according to a certain law, and it is the primary link to realize automatic detection and automatic control.
The function of sensors is often compared to the five human senses: chemical sensors can be likened to taste;Acoustic sensors can be compared to hearing;Gas sensors can be compared to the sense of smell;A light-sensitive sensor can be compared to vision;Pressure-sensitive, temperature-sensitive, and fluid sensors can be likened to the sense of touch.
Classification of sensitive components: 1. Biology, based on molecular recognition functions such as enzymes and antibodies;2. Physics, based on physical effects such as force, heat, light, electricity, magnetism and sound3. Chemistry, based on the principle of chemical reaction.
Usually according to its basic sensing function, it can be divided into several categories, such as gas sensitive elements, force sensitive elements, magnetic sensitive elements, moisture sensitive elements, sound sensitive elements, radiation sensitive elements, color sensitive elements, thermal sensitive elements, light sensitive elements and taste sensitive elements (some people have divided sensitive elements into 46 categories).
The basic requirements of the sensor in the CNC machine tool: 1) the use and maintenance of the sensor are more convenient;2) The sensor has strong anti-interference and high reliability;3) The cost of the sensor is lower. 4) The sensor should meet the standards and requirements of speed and accuracy
Generally speaking, the requirements of large CNC machine tools for sensors are mainly reflected in speed responsiveness, while the requirements for sensors for high-precision and medium-sized CNC machine tools are mainly reflected in accuracy. Different types of CNC machines also have different requirements for sensors.