| 摘要 |
PROBLEM TO BE SOLVED: To provide a cutter capable of maintaining not only the initial cutting quality but also the cutting quality over a long period without sharpening the cutter. SOLUTION: This cutter 1 is obtained by providing a serrated edge 11 for alternately continuing a fine recessed part 13 and a projecting part 12, and forming a blade on the edge of the recessed part 13 and the edge of the projecting part 12 by pushing a blade body 10 made of steel or stainless steel against an almost cylindrical surface while rotating a grinding wheel 20 having a projecting part 21 at a fine pitch. At this time, an opening width of the recessed part 13 is set to 0.2 mm to 0.5 mm, a tip width of the projecting part 12 is set to 0.2 mm or more, and the depth of the recessed part 13 is set to 0.1 mm to 0.3 mm.
|
