公开(公告)号：US3701188A

公开(公告)日：1972-10-31

申请号：US3701188D

申请日：1971-01-14

申请人： WALL MACHINE WORKS

发明人： WALL HARRY W ,  WALL EUGENE W

IPC分类号： B23B51/08 ,  B23C5/10 ,  B23P15/34 ,  B27G13/02 ,  B26D1/12

CPC分类号： B23C3/36 ,  B23B51/08 ,  B23C5/10 ,  B23C2210/248 ,  B23P15/34 ,  B27G13/12 ,  Y10T407/1948 ,  Y10T408/352 ,  Y10T408/356

摘要： A router bit has an elongated cylindrical body with a closed helical flute having a concave wall surface merging into a convex wall surface. The width of the flute spans approximately half the circumference of the body, with the flute being formed by a single mill cut from a rotary mill cutter. A recess is formed in the unfluted portion of the body by holding the body against the cutting edge of the rotary grinding wheel and rotating it so the recessed portion forms a substantially cylindrically curved peripheral relief wall encircling the body from one edge to the other of the flute. The relief wall intersects the concave surface of the flute to form a helical cutting edge extending approximately 90* around the circumference of the relief wall.

摘要翻译： 路由器钻头具有细长的圆柱形主体，其具有闭合的螺旋槽，其具有并入凸壁表面的凹形壁表面。 长槽的宽度大约为主体圆周的一半，其中沟槽由旋转式铣刀切割成单铣刀形成。 通过将本体保持抵靠旋转砂轮的切割边缘并使其旋转而形成在本体的未平行部分中的凹部，使得凹部形成基本上圆柱形弯曲的周边浮雕壁，其围绕主体从一个边缘到另一个边缘 长笛。 浮雕墙与凹槽的凹面相交，形成围绕浮雕壁的圆周延伸大约90°的螺旋切割刃。

公开(公告)号：US3848483A

公开(公告)日：1974-11-19

申请号：US42713473

申请日：1973-12-21

申请人： WALL MACHINE WORKS

发明人： WALL H ,  WALL E

IPC分类号： B23C3/32 ,  B23P15/34 ,  B21K5/02

CPC分类号： B23C3/32 ,  B23P15/34

摘要： A router bit has an elongated cylindrical body with a closed helical flute having a concave wall surface merging into a convex wall surface. The width of the flute spans approximately half the circumference of the body, with the flute being formed by a single mill cut from a rotary mill cutter. A recess is formed in the unfluted portion of the body by holding the body against the cutting edge of the rotary grinding wheel and rotating it so the recessed portion forms a substantially cylindrically curved peripheral relief wall encircling the body from one edge to the other of the flute. The relief wall intersects the concave surface of the flute to form a helical cutting edge extending approximately 90* around the circumference of the relief wall.

摘要翻译： 路由器钻头具有细长的圆柱形主体，其具有闭合的螺旋槽，其具有并入凸壁表面的凹形壁表面。 长槽的宽度大约为主体圆周的一半，其中沟槽由旋转式铣刀切割成单铣刀形成。 通过将本体保持抵靠旋转砂轮的切割边缘并使其旋转而形成在本体的未平行部分中的凹部，使得凹部形成基本上圆柱形弯曲的周边浮雕壁，其围绕主体从一个边缘到另一个边缘 长笛。 浮雕墙与凹槽的凹面相交，形成围绕浮雕壁的圆周延伸大约90°的螺旋切割刃。