Novel planet roller screw pair

The utility model discloses a novel planet roller screw pair and relates to the technical field of mechanical parts. The novel planet roller screw pair comprises a multiple-thread screw, a nut, a roller, a guide ring and an inner gear ring, wherein the nut is divided into a half nut A and a half nut B along the axis direction of the multiple-thread screw. The problems of high material consumption and high time consumption of a nut pre-tightening force adjustment structure of the conventional planet roller screw pair can be solved. The novel planet roller screw pair has the characteristics of low friction, high efficiency, long service life, high carrying capacity and the like, and is widely applied to manufacturing of precise instruments, numerically-controlled machine tools and medical devices and widely applied to processing center occasions such as aerospace, metallurgy and mines at home and abroad.