Fixed-point material taking and placing system of multi-station polishing machine

The utility model discloses a fixed-point material taking and placing system of a multi-station polishing machine. N stations are arranged on a polishing disc of the polishing machine; n is a positiveinteger, the method is characterized in that the method is characterized by comprising the following steps; the automatic feeding device further comprises a PLC, a frequency converter, a gear motor,a material taking and placing button, a Hall sensor and a metal induction piece. Wherein the metal induction piece is arranged on a shaft of the speed reducing motor, the frequency converter and the material taking and placing button are respectively connected with the PLC, the speed reducing motor is connected with the frequency converter, and the Hall sensor is arranged on one side of the metalinduction piece. The Hall sensors are used for accurate positioning, a worker can take and place workpieces at different stations at the same position, the production efficiency is greatly improved, and the taking and placing b