The invention relates to a double-disc size-coordinated control device for a
bench grinder. The device comprises a
machine body (1), and an
infrared sensing module (2), a numerical value reference module (3), a
remote communication module (4) and a management module (5) are arranged on the
machine body (1). In running, the
infrared sensing module (2) is arranged on
flange plates and senses the size condition of the
flange plates, the numerical value reference module (3) is arranged on a
grinding wheel, and the
remote communication module (4) transmits sensed information to the management module (5) for
processing; a double-disc comparison module (6) is arranged on the
infrared sensing module (2), and whether or not the sizes of the two
flange plates are identical is compared; a
diameter setting module (7) is arranged on the numerical value reference module (3), and the reasonable numerical value range of the size of the
grinding wheel is set according to the sizes of the flange plates;a prompt module (8) is arranged on the management module (5); by controlling the sizes of the flange plates and the
grinding wheel to be reasonable, the running effect is prevented from being influenced, and operation is conducted successfully.