DIAMOND-COATED ROTATION CUTTING TOOL
To prevent the occurrence of defects due to peeling or chipping, and obtain a smooth machined face.A diamond coating includes a first diamond layer made of minute diamond particles and a second diamond layer made of coarse diamond particles: in a flank-face side diamond coating, a mean coat thicknes...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | To prevent the occurrence of defects due to peeling or chipping, and obtain a smooth machined face.A diamond coating includes a first diamond layer made of minute diamond particles and a second diamond layer made of coarse diamond particles: in a flank-face side diamond coating, a mean coat thickness d2 is not less than 3 µm and not more than 25 µm, a first diamond layer is formed on a surface side and a second diamond layer is formed on a tool base side: a rake-face side diamond coating is in a smaller range of 50 µm or 1/10 of a tool diameter from a tip of a base cutting-edge part; in the rake-face side diamond coating, a mean coat thickness d1 is a smaller one in a range not less than 0 µm and not more than 5.0 µm or a range less than d2: and a boundary part between the first diamond layer and the second diamond layer at an end surface of the flank-face side diamond coating is exposed near to a base flank-face than an extended line of a base line connecting a tool rotation axis and a base cutting-edge part in a perpendicular cross section of the base cutting-edge part. |
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