Cutting method of honeycomb formed body, and manufacturing method of honeycomb structure

A cutting method of a honeycomb formed body comprising:

• an end face cutting step of cutting both end faces of a ceramic honeycomb formed body before firing to produce cut surfaces, by use of blade type rough-cutting grinding wheels in which abrasive grain layers are formed;
• a honeycomb formed body rotating step of, after the end face cutting step, rotating the honeycomb formed body from 90° to 270° around a rotation axis which is a central axis perpendicular to the end faces of the honeycomb formed body so that a loaded region to which a load is applied when cutting the end faces is different from a loaded region to which a load is applied when finish-polishing the end faces;
• and
• an end face finishing step of, after the honeycomb formed body rotating step, disposing two finish-polishing grinding wheels via a predetermined distance so that finishing abrasive grain layers formed in the finish-polishing grinding wheels face each other, rotating the finish-polishing grinding wheels round a rotary shaft which is a central shaft of the finish-polishing grinding wheels, and moving the honeycomb formed body in a direction perpendicular to the rotary shaft to pass the honeycomb formed body between the two finish-polishing grinding wheels, thereby finish-polishing cut surfaces which are cut.