Patent ID: 8210901
Filing Date: 2012-07-03
Classification: B23P,B24B,B28B,Y10T

Abstract:
1. A method for producing a die for molding a ceramic honeycomb structure, which comprises molding grooves arranged in a lattice pattern, and apertures communicating with said molding grooves for supplying a moldable material, wherein the formation of said lattice-patterned grooves by machining is conducted by a first machining operation for forming pluralities of first parallel grooves, and a second machining operation for forming second grooves crossing said first grooves; wherein said first and second machining operations are conducted by at least 2 passes of grinding or cutting using a rotating tool; wherein said first machining operation is conducted by down-cutting; wherein said second machining operation is conducted by down cutting in the first pass and up-cutting in the second pass or later; and wherein said molding grooves have a depth of 10 times or more of its width.