基本信息:
- 专利标题： INDEXABLE INSERT FOR END MILLS
- 专利标题（中）：可拆卸的INSERT INSERT FOR END MILLS
- 申请号：PCT/SE1999/000741 申请日：1999-05-04
- 公开(公告)号：WO99056903A1 公开(公告)日：1999-11-11
- 主分类号： B23C5/10
- IPC分类号： B23C5/10 ; B23C5/20 ; B23C5/26 ; B23B27/16
摘要：
A cutting insert comprises an upper chip surface (16), a bottom surface (17) and side faces (18, 19) therebetween. At each of the end faces the cutting insert has axially protruding portions (22, 23), each of which appears with a bevel face (26, 27). Main cutting edges are provided in the intersection between the chip surface (16) and the side surfaces (18, 19). On each side surface is provided a clearance surface (30) formed on a protruding portion (31) which via a step clearance extends into a secondary helically twisted clearance surface, the chip angle of which increases with increasing cutting depth. With the cutting insert regarded in plan view the bevel face is oriented in straight angle towards the main cutting edge (24, 25). Thanks to this embodiment is achieved constant functional edge angle along a wave-shaped edge line, which combined with step clearance and large positive axial angle ( alpha ) enables improved precision when machining a 90-degree shoulder in a work piece, which contributes to a more even wear along the main cutting edge and increased life-time of the cutting insert.
摘要（中）：
切削刀片包括上切屑表面（16），底表面（17）和其间的侧面（18,19）。 在每个端面处，切削刀片具有轴向突出部分（22,23），每个端部呈现斜面（26,27）。 主切削刃设置在切屑面（16）与侧面（18,19）的交点处。 在每个侧表面上设置有形成在突出部分（31）上的间隙表面（30），所述间隙表面（31）经由台阶间隙延伸到次级螺旋形扭曲的间隙表面中，其切割角度随着切割深度的增加而增加。 在平面图中考虑到切削刀片，斜面朝着主切削刃（24,25）以直角取向。 由于该实施例，沿着波形边缘线获得恒定的功能边缘角度，其结合台阶间隙和大的正轴向角（α），可以在加工工件中的90度肩部时提高精度，这有助于 沿着主切削刃更均匀地磨损并且增加切削刀片的寿命。