Manufacturing method of producing ceramic honeycomb structure body

A manufacturing method of producing a ceramic honeycomb structure body, comprising steps of:

• extrusion molding of extruding ceramic raw material to mold a ceramic honeycomb molded body composed of an outer peripheral skin part, cell walls arranged in the outer peripheral skin part in a honeycomb structure shape, and a plurality of cells surrounded by the cell walls, each cell having a penetrate hole, penetrating both ends of the ceramic honeycomb molded body, formed along the axis direction of the ceramic honeycomb molded body;
• cutting the ceramic honeycomb molded body into a plurality of ceramic honeycomb shaped bodies of a specified length;
• drying the ceramic honeycomb shaped body;
• working of cutting out and removing the outer peripheral surface including the outer peripheral skin part of the ceramic honeycomb shaped body by using cutting means that has a cutting tooth formed at a front part of the cutting tool while relatively moving the cutting tool in the axis direction of the ceramic honeycomb shaped bodies;
• and
• burning the worked ceramic honeycomb shaped body.