公开(公告)号：EP0395608A3

公开(公告)日：1991-01-02

申请号：EP90850135.6

申请日：1990-04-09

申请人： SANDVIK AKTIEBOLAG

发明人： Hedlund, Jan-Gunnar ,  Akerman, Jan ,  Asberg, Bengt

IPC分类号： C22C29/08

CPC分类号： C22C29/08 ,  E21B10/56 ,  E21C35/18 ,  E21C2035/1806 ,  E21C2035/1813

摘要： The present invention relates to a tool for cutting solid material, said tool including a tool body (10) having a supporting surface, and a cutting insert (14) having a generally conical tip portion and a shoulder portion that is intended to rest against the supporting surface, said cutting insert being secured to the tool body, e.g. by brazing. The invention also relates to the cutting insert per se. When a tool of the above-mentioned type is cutting relatively hard, solid material, e.g. sandstone, the cutting insert will be subjected to very high forces, said forces creating a turning moment that gives rise to tensile stresses in certain portions of the the cutting insert. Eventually the turning moment is transferred to the brazing joint between the cutting insert and the tool body. The present invention is characterized in that the cutting insert (14) has a concave portion in between its tip and bottom, said concave portion extending circumferentially around the cutting insert, and that a special type of cemented carbide is used for the cutting insert.

公开(公告)号：EP0395608A2

公开(公告)日：1990-10-31

申请号：EP90850135.6

申请日：1990-04-09

申请人： SANDVIK AKTIEBOLAG

发明人： Hedlund, Jan-Gunnar ,  Akerman, Jan ,  Asberg, Bengt

IPC分类号： C22C29/08

CPC分类号： C22C29/08 ,  E21B10/56 ,  E21C35/18 ,  E21C2035/1806 ,  E21C2035/1813

摘要： The present invention relates to a tool for cutting solid material, said tool including a tool body (10) having a supporting surface, and a cutting insert (14) having a generally conical tip portion and a shoulder portion that is intended to rest against the supporting surface, said cutting insert being secured to the tool body, e.g. by brazing. The invention also relates to the cutting insert per se.
When a tool of the above-mentioned type is cutting relatively hard, solid material, e.g. sandstone, the cutting insert will be subjected to very high forces, said forces creating a turning moment that gives rise to tensile stresses in certain portions of the the cutting insert. Eventually the turning moment is transferred to the brazing joint between the cutting insert and the tool body.
The present invention is characterized in that the cutting insert (14) has a concave portion in between its tip and bottom, said concave portion extending circumferentially around the cutting insert, and that a special type of cemented carbide is used for the cutting insert.

摘要翻译： 本发明涉及一种用于切割固体材料的工具，所述工具包括具有支撑表面的工具主体（10）和具有大致锥形的尖端部分和肩部的切削刀片（14），该切削刀片旨在抵靠 所述切削刀片固定到工具主体上，例如， 通过钎焊。 本发明还涉及切削刀片本身。 当上述类型的工具切割相对硬的固体材料，例如， 砂岩，切削刀片将受到非常大的力，所述力产生在切削刀片的某些部分产生拉伸应力的转向力矩。 最终转动力矩转移到切削刀片和刀具体之间的钎焊接头。 本发明的特征在于，切削刀片（14）在其尖端和底部之间具有凹部，所述凹部围绕切削刀片周向延伸，并且特殊类型的硬质合金用于切削刀片。

公开(公告)号：EP0352243A1

公开(公告)日：1990-01-24

申请号：EP89850210.9

申请日：1989-06-21

申请人： SANDVIK AKTIEBOLAG

发明人： Hedlund, Jan-Gunnar ,  Asberg, Bengt

IPC分类号： E21C35/18 ,  E21C35/22

CPC分类号： E21C35/187

摘要： The present invention relates to a valve (20) intended to be mounted in a holder (10) of a tool (11) for cutting of solid materials, said valve (20) being activated by axial displacement of the tool (11) in the holder (10), said valve (20) including a valve housing (26), a push-rod (27) axially displaceable in the valve housing (26) and acting upon a sealing body (35) of the valve (20).
Valves of the type specified above are normally secured in holders for the tools by thread connections. However, this structural design involves certain structural disadvantages, e.g. concerning the forces acting upon the valve.
The characterizing feature of the present invention is that the valve (20) according to the invention has a floating suspension in the holder (10).

摘要翻译： 本发明涉及一种用于安装在用于切割固体材料的工具（11）的保持器（10）中的阀门（20），所述阀门（20）通过工具（11）的轴向位移而被致动 所述阀（20）包括阀壳体（26），可在阀壳体（26）中轴向移动并且作用在阀（20）的密封体（35）上的推杆（27）。 上述类型的阀通常通过螺纹连接固定在工具的支架中。 然而，这种结构设计涉及某些结构缺点，例如 关于作用在阀上的力。 本发明的特征在于，根据本发明的阀（20）在支架（10）中具有浮动悬挂。