| 摘要 |
<p>A milling cutter for slotting which is provided with a blade body structure capable of producing, without sacrificing strength, an excellent quality of durable film by physical deposition method also on the side flank of a projected cutting blade near the bottom or the outside flank of a bottom blade and comprises blade bodies (22) with a plurality of projected cutting blades (24) disposed in comb shape which are installed on a cutter body (20) at specified pitches in the circumferential direction and a bottom blade (32) formed on the same surface as the cutting face (28) of the projected cutting blade at the bottom between the projected cutting blade and its adjacent projected cutting blade, characterized in that a bottom groove (38) having a width of 90 to 100 % of the width of the bottom blade (32) is formed so that the bottom blade is cut off and then the blade bodies are coated with hard film and also a bottom groove having a width of 70 to 100 % of the width of the bottom blade is formed at an attack angle of 0° to 105° so that the bottom blade is cut off and then the blade bodies (22) are coated with hard film.</p> |
