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1. 发明授权

US06543970B1 Double negative cutting insert for tools for chip removing machining 有权
标题翻译：用于切屑加工的工具的双负切削刀片
公开(公告)号：US06543970B1
公开(公告)日：2003-04-08
申请号：US09693997
申请日：2000-10-23
申请人： Ingemar Qvarth , Anders Nilsson , Willy Åström , Per Berjerstål , Stefan Scherbarth
发明人： Ingemar Qvarth , Anders Nilsson , Willy Åström , Per Berjerstål , Stefan Scherbarth
IPC分类号： B23B2722
CPC分类号： B23C5/202 , B23C2200/081 , Y10T407/235 , Y10T407/24
摘要： A double negative cutting insert has opposite top and bottom sides between which transverse flank surfaces extend, adjacent to which cutting edges are formed. There are at least four useful major cutting edges, which separately extend from an active operating corner towards a nearby first inactive corner. Each major cutting edge co-operates with a minor cutting edge with the purpose of face machining the surface, that is left after material removal. The cutting insert has an octagonal basic shape, the top and bottom sides thereof having an identical shape with four spaced-apart supporting projections, which are placed near the four inactive corners and have plane abutment surfaces located in a common plane. An individual land adjacent to the major cutting edges has a concavely arched shape in order to provide a positive cutting geometry during operation.
摘要翻译：双负切削刀片具有相对的顶侧和底侧，横向侧面在其之间延伸，邻近形成切削刃。至少有四个有用的主要切削刃，其从主动操作角分别延伸到附近的第一不活动角。每个主切削刃与一个小切削刃配合，目的是对表面进行加工，这是在材料去除后留下的。切削刀片具有八边形基本形状，其顶侧和底侧具有相同的形状，具有四个间隔开的支撑突起，它们位于四个无效角附近并具有位于公共平面中的平面邻接表面。与主切削刃相邻的单独的地面具有凹入的拱形形状，以便在操作期间提供正切削几何形状。

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