公开(公告)号：US4993890A

公开(公告)日：1991-02-19

申请号：US351486

申请日：1989-05-15

申请人： Tommy S. Tukala ,  Per Nilsson ,  Lars-Gunnar Wallstrom

发明人： Tommy S. Tukala ,  Per Nilsson ,  Lars-Gunnar Wallstrom

IPC分类号： B23C5/04 ,  B23C5/20 ,  B23C5/22 ,  B23C5/24

CPC分类号： B23C5/2256 ,  B23C5/207 ,  B23C2226/125 ,  B23C2226/18 ,  B23C2226/31 ,  B23C2228/49 ,  B23C2240/08 ,  Y10T407/1908 ,  Y10T407/192 ,  Y10T407/1932

摘要： The invention provides a milling cutter for machining metal workpieces and a cartridge therefor. The milling cutter comprises a plurality of peripheral recesses for the receipt of insert-equipped cartridges. One of the walls of said recess is provided by two arms integral with the milling cutter body that each by means of a screw is arranged to clamp the cartridge against one wall in said recess. The cartridge is provided with two bores having suitable clearance for the receipt of said screws.

公开(公告)号：US4598779A

公开(公告)日：1986-07-08

申请号：US650663

申请日：1984-09-14

申请人： Bernt S. Liljekvist ,  Bo Carl G. Nordmark ,  Tommy S. Tukala

发明人： Bernt S. Liljekvist ,  Bo Carl G. Nordmark ,  Tommy S. Tukala

IPC分类号： E21B10/36 ,  E21B10/52 ,  E21B10/56 ,  E21B10/58

CPC分类号： E21B10/56

摘要： A rock drill bit of the impact type comprising a boring head, a shaft having ridges, a front surface and a number of peripherally spaced holes receiving inserts, said holes extending forwardly and outwardly at an acute angle .phi. with respect to the center line of the drill bit. The guiding surface of the insert mainly coincides with the jacket surface of the bit body when the insert has been fixed in the hole which emerges into both the jacket surface and the front surface of the bit body. This means that the guiding surface partly extends on both sides of the plane of the front surface.

摘要翻译： 一种冲击类型的岩石钻头，包括钻头，具有脊的轴，前表面和接收插入件的多个周向间隔开的孔，所述孔相对于所述钻头的中心线以锐角φ1向前和向外延伸 钻头 当插入件固定在出现在钻头体的护套表面和前表面的孔中时，刀片的引导表面主要与钻头体的护套表面重合。 这意味着引导表面部分地在前表面的平面的两侧延伸。