Pressure, temperature and other sensors in the application of CNC machine tools

Sensor achievements highly automated CNC machine tools and high-precision operation. CNC machine tools in an above the need to use a lot of sensors, such as proximity switches, pressure sensors, temperature sensors , and various optical encoder , etc., mainly used to detect the position , pressure, temperature and flow and other parameters. Machine requirements of the sensor data are: 1, high reliability, and high noise immunity ; 2 , high precision , and customer demands for speed ; 3 easy maintenance, suitable for machine tool applications ; 4, low maintenance costs. Here under the pressure, temperature and Camshaft Positioning Sensor in the application of CNC machine tools . 1, for the displacement and the speed detection optical encoder : the displacement detection: light spot , also called encoder pulse encoder , it can be converted into electrical pulses mechanical angle , the machine above the X-axis and Z- axis with the ends a photoelectric encoder for angular displacement measurements and digital tachometer , screw pitch angular displacement through an indirect reflection of the linear displacement of the carriage or carriage ; used for speed detection: optical encoder angular displacement after a certain time change will produce a pulse timer can be detected with the angular velocity , the speed control system for CNC machine tools in general the speed of the servo unit testing. 2 proximity switches for position detection : Proximity switch the name suggests is the time when there will be an object close to the signal output of the switch, it does not require objects to be detected and direct contact , proximity switch on the machine mainly used in the turret the tool selection control table stroke control , cylinder and cylinder piston stroke control . 3 , a pressure sensor for detecting pressure Engine Coolant Temperature Sensor is most commonly used in industrial practice of a sensor , which are widely used in various industrial automation environment, involving water utilities , rail transportation, intelligent buildings, production automation , aerospace , military, petrochemical, oil, electric power, shipbuilding , machine tools , pipes and many other industries. The pressure sensor is a pressure sensor is converted to an electrical signal on the machine, the machine adapted clamping force on the workpiece is monitored when the clamping force is lower than the set value when the work will lead to loose , the system sends an alarm , stop take the knife ; additional tools can detect changes in the cutting force . Moreover, it is in the lubrication system, hydraulic system , pneumatic system, for detecting the passage or the gas pressure in the oil or gas when the pressure is less than set when the set value , the shock will be activated and then sends signals to the control system to control it. 4 , a temperature sensor for detecting the temperature using a temperature sensor with temperature physical properties of materials the variation of the temperature sensor is converted to electricity .  Engine Water Temperature Sensor  is a core part of the temperature measuring instruments , a wide variety . Press the measurement can be divided into contact and non -contact two categories, in accordance with the characteristics of sensor materials and electronic components are divided into two types of RTD and thermocouple . Auto Temperature Sensor is used to monitor the main machine which compensates for temperature or the temperature overheating protection, which in the working machine as the motor rotation and the movement of moving parts , the cutting generates heat , but the temperature distribution is uneven, will cause certain temperature , the thermal deformation of CNC machine tools , precision machined parts affected . To avoid these effects, the temperature sensor will be installed on the machine , it can be detected that the real temperature value transmitted to the control system , the set point can be reached at the time to the control system of the machine temperature can be monitored and control .