Replacement blade bodies for a slotting milling cutter
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United States of America Patent
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Nov 11, 2003
Grant Date -
Aug 1, 2002
app pub date -
Mar 28, 2002
filing date -
Jan 9, 1998
priority date (Note) -
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Abstract
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 edge 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 edge (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 with of 90 to 100% of the width of the bottom edge (32) is formed so that the bottom edge 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 edge is formed at an attack angle of 0.degree. to 105.degree. so that the bottom edge is cut off and then the blade bodies (22) are coated with hard film.
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