Bean grinding coffee machine and bean grinding coffee machine control method

A method for controlling a bean grinding coffee machine, comprising:

• activating a driving device provided on a body and located on a circumferential side of a transmission shaft, and transferring, by the driving device, power to a grinding device through a driving portion and the transmission shaft, wherein the driving portion comprises a driving shaft, a first gear, and a second gear, the first gear is fixed on the driving shaft, the second gear is mounted on the grinding device, and an inner side of the second gear is engaged with an outer edge of the first gear, wherein the inner side of the second gear is provided with a plurality of annularly arranged inner convex teeth, a circumferential outer edge of the first gear is provided with a plurality of annularly arranged outer convex teeth, the second gear is engaged with the first gear, and the inner convex teeth are alternatively engaged with the outer convex teeth;
• the grinding device further comprises a bevel gear, one end of the transmission shaft is fixed to the inner grinding wheel, another end of the transmission shaft is fixed to the bevel gear, the inner grinding wheel is coaxially fixed to the transmission shaft, an outer edge of the second gear is provided with bevel teeth, the bevel gear is engaged with the second gear through the bevel teeth, and the driving shaft is in transmission connection with the transmission shaft through the first gear, the second gear, and the bevel gear;
• obtaining the power by the transmission shaft, driving an inner grinding wheel to rotate, fixing an outer grinding wheel, and performing relative rotation between the inner grinding wheel and outer grinding wheel;
• feeding raw material into in a gap between the inner grinding wheel and outer grinding wheel, and grinding, by the grinding device, the raw material into ground substance;
• and
• turning off the driving device to stop working of the grinding device.