Pressure-adjustable fixing device for precise measurement of bearing and use method of pressure-adjustable fixing device

The invention relates to a pressure-adjustable fixing device for precision bearing measurement and a use method. The device comprises a measurement bottom flat plate, a fixed side positioning plate and a movable side pressing positioning assembly. The front end of the fixed side positioning plate is provided with a V-shaped positioning groove for positioning a bearing part, and the fixed side positioning plate is fixedly arranged on the measuring bottom flat plate; the movable side pressing and positioning assembly comprises a pressing and positioning seat, an adjustable elastic jacking mechanism mounted on the pressing and positioning seat, and a movable side positioning pressing plate; the movable side positioning pressing plate is arranged outside the front end of the pressing positioning seat, the output end of the adjustable elastic jacking mechanism extends out of the front end of the pressing positioning seat and is in driving connection with the movable side positioning pressing plate, a V-shaped pres