Abstract: There is disclosed a grinding method of a honeycomb structure, wherein a grind processing member having an outer peripheral surface, a first grinding wheel tapered surface and a second grinding wheel tapered surface and rotating around a central axis grinds a joined honeycomb segment assembly rotating around a central axis, and the above respective surfaces of the grind processing member form a first ground region, a second ground region, a center ground surface, a first tapered surface and a second tapered surface, to prepare the honeycomb structure including a cylindrical honeycomb base material, and a ring-like bulge portion “which surrounds an outer periphery of the honeycomb base material, protrudes from the outer periphery of the honeycomb base material toward the outside in a flange manner, and has the first tapered surface, the second tapered surface and the center ground surface.

Abstract: There is disclosed a grinding method of a honeycomb structure, wherein a grind processing member having an outer peripheral surface, a first grinding wheel tapered surface and a second grinding wheel tapered surface and rotating around a central axis grinds a joined honeycomb segment assembly rotating around a central axis, and the above respective surfaces of the grind processing member form a first ground region, a second ground region, a center ground surface, a first tapered surface and a second tapered surface, to prepare the honeycomb structure including a cylindrical honeycomb base material, and a ring-like bulge portion “which surrounds an outer periphery of the honeycomb base material, protrudes from the outer periphery of the honeycomb base material toward the outside in a flange manner, and has the first tapered surface, the second tapered surface and the center ground surface.

Abstract: There is disclosed a honeycomb structure manufacturing method which is capable of efficiently and inexpensively manufacturing a honeycomb structure for preferable use in a filter for trapping particulates in an exhaust gas or the like by use of a long-life grinding member whose satisfactory grinding performance is retained for a long time. The method includes the step of: working an outer periphery of a coarsely shaped honeycomb structure 20 made of a porous ceramic by use of a grinding member 10 to obtain a honeycomb structure 30 having a predetermined shape, wherein diamond abrasive grains of the grinding member 10 have a grain size of 40 to 150 mesh (JIS B 4130 standard) and a concentration degree of 80 or more, and the surfaces of the diamond abrasive grains are coated with at least one selected from the group consisting of Ti, Ni, and Cr.