The utility model discloses an automatic
grinding head replacing mechanism which comprises a clamp
assembly and a first driving
assembly used for driving the clamp
assembly to move. The clamp assembly comprises a mounting plate, a first clamping jaw used for taking down an old
grinding head from a
polishing head, a second clamping jaw used for clamping a new
grinding head and sending the new grinding head to the
polishing head and an in-place pressing rod used for pressing the new grinding head to the
polishing head, and the first clamping jaw, the second clamping jaw and the in-place pressing rod are arranged below the mounting plate in a staggered mode. The utility model further provides a polishing
machine. According to the automatic grinding head replacing mechanism, new and old grinding heads can be replaced, pressing is in place, automatic replacement of the grinding heads is achieved, and production efficiency is improved. According to the polishing
machine, the grinding head can be automatically replaced, raw materials can be automatically fed or discharged, the production time of the polishing
machine is greatly prolonged, and the production efficiency is multiplied.