Grinding device for grinding small-diameter, long and high samples and use method of grinding device

The invention belongs to the technical field of grinding devices, and discloses a grinding device for grinding small-diameter long-height samples and a using method thereof.The grinding device comprises a base, a workbench is fixed to the top end of the base, a supporting rod is fixed to the top end of the workbench, a top plate is fixed to the top end of the supporting rod, and a fixing mechanism is arranged at the top end of the top plate; through cooperation of structures such as a positioning seat, a positioning plate and a fixing knob, the device can center a sample with small diameter, length and height, the angle of a centering cylinder is changed by rotating the angle of the positioning plate, and the angle of the positioning plate can be fixed by the fixing knob; the three sets of centering cylinders can center the small-diameter long-height sample after making contact with the small-diameter long-height sample, the first motor drives one set of positioning plates to rotate, the belt can move to driv