Connection method of motor and speed reducer

A method for connecting a motor and a speed reducer belongs to the technical field of driving, is used for solving the problem of accurate positioning of connection of the motor and the speed reducer, and comprises the following steps: 1) mounting a connecting flange on an input shaft of the speed reducer; 2) measuring the distance from the end surface, far away from the speed reducer, of the connecting flange to the mounting end surface of the input shaft; (3) a coupler is installed on an output shaft of the motor; 4) measuring the distance of the coupling away from the mounting end face of the output shaft of the motor; (5) the distance, away from the output shaft mounting end face, of the coupler is made to be equal to the distance, away from the end face of the speed reducer, of the connecting flange to the input shaft mounting end face; and (6) the motor provided with the coupler is connected with the speed reducer through the connecting flange. Accurate positioning between the speed reducer input shaft