Planar electromagnetic disc for grinding machine

The utility model provides a plane electromagnetic disc for a grinding machine, which relates to the technical field of electromagnetic discs and comprises an electromagnetic disc main body, eight electromagnetic blocks are placed in the electromagnetic disc main body, and a second clamping plate is fixed at the top end of the electromagnetic disc main body and located on one side of the eight electromagnetic blocks. And fixing blocks are fixed to the positions, located on the other sides of the eight electromagnetic blocks, of the outer wall of the electromagnetic disc body, first clamping plates matched with the second clamping plates are arranged on one sides of the fixing blocks, and auxiliary clamping structures used for driving the first clamping plates to move are arranged in the fixing blocks. Through the arrangement of eight electromagnetic blocks and eight mounting grooves, the electromagnetism of the device is divided into eight areas, each area can be independently controlled, when one area is dam