Cutting fluid solid particle concentration measuring method, cutting fluid circulating system and cutting machine

The invention discloses a cutting fluid solid particle concentration measuring method, a cutting fluid circulating system and a cutting machine, and relates to the technical field of cutting equipment.The method comprises the steps that a density measuring device is arranged on a cutting fluid circulating loop, the density of a cutting fluid mixed medium is measured in real time, and a measured value of the density of the mixed medium is obtained; the measured value of the mixed medium density is substituted into a formula, and the volume concentration and the mass concentration of solid particles in the cutting fluid are obtained through real-time calculation. The cutting fluid circulation system comprises a control unit and a cutting fluid circulation loop, a density measuring device and a temperature measuring device are arranged on the cutting fluid circulation loop and used for measuring the density and the temperature of a cutting fluid mixed medium in real time, or a multi-parameter measuring device is