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发明授权
CN1962139B 刀刃可换式刀片和刀刃可换式角铣刀 有权

刀刃可换式刀片和刀刃可换式角铣刀
摘要：
本发明公开了一种用于角铣刀的刀刃可换式刀片(20)，该刀片包括：第一面(1)和第二面(2)；第三面(3)和第四面(4)，该第三、第四面分别与第一面(1)和第二面(2)的第一侧边和第二侧边连接；以及第五面(5)和第六面(6)，该第五、第六面分别与第一面(1)和第二面(2)的第一端边和第二端边连接。其中，第一面用作前刀面，第三面用作外周后刀面，第五面用作副后刀面。在第三面(3)的一部分上设置有扭曲面(10)，以形成棱线(7)，该棱线(7)用作与第一面(1)交叉并位于第三面(3)和第一面(1)之间的主切削刃。优选的是第一面(1)和第二面(2)设置为相对于彼此具有高度差，以使至少一组对角角部凸出。
摘要（英）：

A replaceable-blade cutting insert (20) for corner milling cutters includes: a first surface (1) and a second surface (2); a third surface (3) and a fourth surface (4) connected to a first side edge and a second side edge thereof respectively; and a fifth surface (5) and a sixth surface (6) connected to a first edge and a second edge of the first surface and the second surface respectively. The first surface (1) is used as rake face, the third surface is used as an outer perimeter flank face, and the fifth surface is used as a forward flank face. A twisted surface (10) is disposed on a section of the third surface (3) to form a ridge line (7) that acts as a main cutting edge intersecting with the first surface (1) and interposed between the third surface (3) and the first surface. It would be preferable for the first surface (1) and the second surface (2) to be positioned with a height offset relative to each other so that at least one set of diagonal corners are projected.

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