The water cutting machine is finished by using the ultra-high pressure technology. It only needs to pressurize the ordinary tap water to the pressure of 250-400mpa, and then radiate it through the gem nozzle with the inner hole diameter of about 0.15-0.35mm, which can form a high-speed jet with the speed of about 800-1000m / s. This is the water knife that can be used to cut the soft base data.
         The water jet cutter can be used to cut two-dimensional shape. The cutting objects include metal, ceramic, plastic, stone, glass, carbon fiber and other materials, and it can also consume complex and subtle shape. Compared with other cutting methods, the water cutter can remove the data without heat, so that the debris of the data can be washed away by the cutting water flow, improving the cutting efficiency.
         The cutting speed and accuracy of water jet are two closely related parameters. Only when the cutting accuracy of water jet is met, can we further pursue the speed. Due to the short cutting platform, it is difficult to judge whether the highest speed can be reached by eyes. In this case, we can use the software imitation function of the servo driver of the cutting machine to check whether the motor speed can reach the highest speed.
         Under normal conditions, when testing the cutting speed of the water jet cutter, it is not necessary to cut it in real way to improve the acceleration and deceleration speed; each axis can be tested separately or at the same time. In addition, the accuracy of water jet cutter cutting is less than ± 0.5mm for general requirements in the construction industry, but less than ± 0.olmm for automotive reflectors; the lower the cutting requirements in steel plate processing, the better.
         Nowadays, the cutting accuracy provided by various machinery manufacturers is generally less than ± 0.2mm, but it can't be seen only from the introduction of the product specification. During the acceptance, there should be a complete set of procedures for testing the cutting accuracy, which should be subject to the product accuracy measured by the practical cutting of the water jet cutter.