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发明授权
US5398739A Rotary cutting head assembly 失效
旋转式切割头总成

Rotary cutting head assembly
摘要：
The present invention includes a rotatable cutting head assembly (12), such as for a planer or a jointer, which planes a work surface on a workpiece (22). The cutting head assembly (12) comprises a rotatable elongate support block (30), a pair of blades (32), and a pair of elongate retainers (34). Each blade (32) has a straight elongate cutting edge (50,51) which extends parallel to and is spaced radially from the longitudinal axis (36) of the support block (30). Each retainer (34) is attachable to the support block (30) to clamp a respective blade (32) therebetween. Retainers (34), blades (32) and support block (30) have cooperating alignment ribs (64) and elongate slots (52). The slots (52) extend parallel to the longitudinal axis of the support block. The cooperating alignment ribs and elongate slots maintain cutting edges (50,51) at equal radial distances from the longitudinal axis (36) while permitting the blades (32) to be longitudinally adjustable relative to the support block (30) to enable a user to offset any longitudinally aligned nicks formed on the cutting edges (50,51) during planing so that the cutting edges (50,51) create a smooth planar surface which is free of ridges on workpiece (22).
摘要（中）：

本发明包括一个可旋转切割头组件（12），例如用于平面或接合件的平面，工件（22）上的工件表面平面。 切割头组件（12）包括可旋转的细长支撑块（30），一对刀片（32）和一对细长保持器（34）。 每个叶片（32）具有平行于支撑块（30）的纵向轴线（36）并与其径向间隔开的直的细长切割边缘（50,51）。 每个保持器（34）可附接到支撑块（30）以将相应的叶片（32）夹在其间。 保持器（34），叶片（32）和支撑块（30）具有配合的对准肋（64）和细长槽（52）。 槽（52）平行于支撑块的纵向轴线延伸。 配合的对准肋和细长槽在与纵向轴线（36）相等的径向距离处保持切割边缘（50,51），同时允许叶片（32）相对于支撑块（30）可纵向调节，以使使用者能够 偏移在刨削期间形成在切削刃（50,51）上的任何纵向排列的切口，使得切削刃（50,51）产生在工件（22）上没有脊的平滑平坦表面。

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