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    • 3. 发明公开
    • Cutting insert with chip control.
    • Schneideinsatz mit Spanableitung。
    • EP0205977A2
    • 1986-12-30
    • EP86107279
    • 1986-05-28
    • GTE VALERON CORP
    • JEREMIAS ROBERT W
    • B23B27/14
    • B23B27/143Y10T407/235Y10T407/245
    • A cutting tool for improved chip forming mat erial removal efficiency over a wide mid-range of typically used feed rates and depths of cut is disclosed in a preferred form of an indexable polygonal cutting insert (10). A first chip control groove (15A,BC) of uniform width (16) and cross section radius (R1) extends from a cutting edge (12 A,B,C) at each side of the polygon and terminates inwardly from the edge in a second chip control groove (20 A,B,C) having a cross section of larger radius (R2) but of lesser depth than that of the first chip control groove (15 A,B,C). The second groove (20 A,B,C) has its largest width at a point (23) substantially midway between adjacent cutting corners (A,B,C) of the polygon and diminishes to zero width at the end of each straight cutting edge (12 A,B,C), the first groove (15 A,B,C) continuing around a substantial corner radius adjoining adjacent ends of the straight portions of such grooves. Corner projections (11 A,B,C) of the outer face (11) of each side of the insert (10) extend between adjacent ends of the second grooves (20 A,B,C) providing a substantial mounting support for inserts incorporating chip control grooves in both major polygonal faces (11). The cutting edge (12 A,B,C) along the side of the polygon is arcuate with its lowest point relative to a major face of the insert being substantially at a midpoint (23) between each corner (A,B,C) of the polygon.
    • 用于改进切屑形成的切削工具在可变形的多边形切削刀片(10)的优选形式中公开了在通常使用的进给速率和切割深度的宽范围的中等范围内的切屑形成。 具有均匀宽度(16)和横截面半径(R1)的第一芯片控制槽(15A,BC)从多边形的每一侧处的切割边缘(12A,B,C)延伸,并从边缘向内延伸 第二芯片控制槽(20A,B,C)具有比第一芯片控制槽(15A,B,C)更大的半径(R2)但是具有较小深度的横截面。 第二槽(20A,B,C)在多边形的相邻切割角(A,B,C)的大致中间的点(23)处具有最大的宽度,并且在每个直的切割刃的端部处减小到零宽度 (12A,B,C),与这些槽的直线部分的相邻端部相邻的基本角部半径的第一槽(15A,B,C)。 插入件(10)每侧的外表面(11)的拐角突起(11A,B,C)在第二凹槽(20A,B,C)的相邻端之间延伸,为插入件 两个主要多边形面(11)中的切屑控制槽。 沿着多边形侧面的切割边缘(12A,B,C)是弓形的,其相对于插入件的主要表面的最低点基本上处于每个角(A,B,C)之间的中点(23) 多边形