In the upgrading of manufacturing technology and equipment, CNC machine tools are rapidly becoming increasingly popular in enterprises due to their high precision, high speed, high efficiency, and safety and reliability. CNC machine tools can operate and process parts according to pre-programmed instructions; they are automated machine tools equipped with a program control system. They utilize various sensors and integrate new technologies such as mechanics, automation, computers, measurement, and microelectronics. This article will guide you through understanding them.
A sensor is a detection device designed to meet the requirements of information transmission, processing, storage, display, recording, and control. It generally consists of three parts: a sensing element, a conversion element, and a basic conversion circuit. It can sense the information being measured and, according to certain rules, convert the sensed information into an electrical signal or other desired form of information output.
A sensor is a physical device or biological part that can detect and sense physical conditions (such as light, heat, and humidity), chemical composition (such as smoke), or signals from the outside world, and transmits the detected information to other devices or parts. It typically consists of a sensing element and a conversion element.
A sensor is a detection device that can sense the information being measured and, in order to meet the requirements of information transmission, processing, storage, display, recording, and control, converts the information being measured into electrical signals or other required forms of information output according to certain rules. It is the primary link in realizing automatic detection and automatic control.
Sensors are often compared to the five human senses: chemical sensors can be compared to taste; acoustic sensors to hearing; gas sensors to smell; light sensors to vision; and pressure, temperature, and fluid sensors to touch.
Sensitive elements can be classified as follows: 1. Biological, based on molecular recognition functions such as enzymes and antibodies; 2. Physical, based on physical effects such as force, heat, light, electricity, magnetism, and sound; 3. Chemical, based on the principles of chemical reactions.
Based on their basic sensing functions, sensitive elements can generally be divided into several categories, such as gas-sensitive elements, force-sensitive elements, magnetic-sensitive elements, humidity-sensitive elements, sound-sensitive elements, radiation-sensitive elements, color-sensitive elements, heat-sensitive elements, light-sensitive elements, and taste-sensitive elements (some people have even divided sensitive elements into 46 categories).
The basic requirements for sensors in CNC machine tools are: 1) The sensors should be easy to use and maintain; 2) The sensors should have strong anti-interference capabilities and high reliability; 3) The sensors should be low in cost; 4) The sensors should meet the standards and requirements for speed and accuracy.
Generally speaking, large CNC machine tools require sensors primarily focused on speed response, while high-precision and medium-sized CNC machine tools primarily require sensors focused on accuracy. Different types of CNC machine tools also have different sensor requirements.
