CNC machine tool is an automatic machine tool equipped with a program control system, which can make the machine tool move and process parts according to the programmed program. It integrates the latest technologies of machinery, automation, computer, measurement, microelectronics, etc., and uses a variety of sensors. The sensors used on CNC machine tools mainly include photoelectric encoders, linear gratings, proximity switches, temperature sensors, Hall sensors, current sensors, etc. Sensors, voltage sensors, pressure sensors, liquid level sensors, resolvers, inductive synchronizers, speed sensors, etc., are mainly used to detect position, linear displacement and angular displacement, speed, pressure, temperature, etc.
1) High reliability and strong anti-interference;
2) Meet the requirements of precision and speed;
3) Easy to use and maintain, suitable for machine tool operating environment;
4) Low cost.
Different types of CNC machine tools have different requirements for sensors. Generally speaking, large-scale machine tools require high speed response, while medium-sized and high precision CNC machining tools mainly require precision.
The induction synchronizer is made by using the principle that the mutual inductance of two planar windings changes with different positions. Its function is to convert the angular or linear displacement into the phase or amplitude of the induced electromotive force, which can be used to measure the linear or angular displacement. According to its structure, it can be divided into two types: linear type and rotary type. The linear induction synchronizer is composed of two parts, the fixed length and the slide rule. The fixed length is installed on the machine bed, and the slide rule is installed on the moving part, which moves together with the worktable; the rotary induction synchronizer stator is a fixed disc, and the rotor for a rotating disk. The induction synchronizer has the advantages of high precision and resolution, strong anti-interference ability, long service life, simple maintenance, long-distance displacement measurement, good manufacturability, and low cost. Rotary induction synchronizers are widely used in the turntables of machine tools and instruments, as well as in various rotary servo control systems.