发明授权
- 专利标题： Method of making router bits
- 专利标题（中）： 制作路由器的方法
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申请号： US42713473申请日： 1973-12-21
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公开(公告)号： US3848483A公开(公告)日： 1974-11-19
- 发明人: WALL H , WALL E
- 申请人： WALL MACHINE WORKS
- 专利权人： Wall Machine Works
- 当前专利权人： Wall Machine Works
- 优先权： US42713473 1973-12-21; US27232372 1972-07-17
- 主分类号： B23C3/32
- IPC分类号： B23C3/32 ; B23P15/34 ; B21K5/02
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.
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