Technical application of CNC machine tools.

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 such as machinery, automation, computers, measurement, microelectronics, etc., and uses a variety of sensors. The sensors used in CNC machine tools mainly include photoelectric encoders, linear gratings, proximity switches, temperature sensors, Hall sensors, current sensors 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. The requirements of CNC machine tools for sensors

1) High reliability and strong anti-interference;

2) Meet the requirements of accuracy 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 machine tools require accuracy.

2. Application of Induction Synchronizer

The inductive synchronizer is made by using the principle that the mutual inductance of two planar windings varies with the position. 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: a fixed length and a sliding ruler. The fixed length is installed on the machine bed, and the sliding ruler is installed on the moving parts and moves with the worktable; the stator of the rotary induction synchronizer is a fixed disc and the rotor for the rotating disc. 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 turntables of machine tools and instruments and various rotary servo control systems.