Device for measuring spring rigidity in real time and working method

According to the device for measuring the spring stiffness in real time and the working method, the change form of the stiffness curve of the measured spring can be recorded and visually monitored in real time, the stiffness of some common springs can be simply and quickly measured, the universality is good, the operation is easy, the structure is simple, and the accuracy is high. A to-be-tested spring is placed on the lower pressing plate and centered through the centering mechanism, the pressure sensor, the display screen, the operation button and the displacement sensor are connected with the data processing and control circuit, the displacement sensor is arranged on the air cylinder and faces the upper pressing plate, and the pressure sensor is arranged below the lower pressing plate. A piston rod of an air cylinder is controlled through an operation button, an air pump and a three-position five-way valve to drive an upper pressing plate to move downwards till a measured spring is pressed, when data measu