Counterbore

音标：/ˈkaʊntərbɔːr/

意思：
n. 平底扩孔；埋头孔；扩孔钻
v. 扩孔；镗出埋头孔

翻译：

作名词时，指机械加工中为螺丝头或零件末端创造的平底凹孔，使部件安装后表面平整；也指用于加工这种孔的工具（扩孔钻）。

作动词时，指使用扩孔钻加工出埋头孔的操作。

用法：

作为机械工程术语，常用于描述金属加工、木工或制造业中，需将螺丝头或连接件嵌入材料表面以下的场景。

可与介词“in”搭配表示“在……中扩孔”，与“with”搭配表示“用……扩孔”。

短语搭配

counterbore drill 扩孔钻

counterbore hole 埋头孔

counterbore diameter 扩孔直径

counterbore depth 扩孔深度

spot-facing counterbore 锪孔扩孔钻

例句

The mechanic used a counterbore to recess the bolt head below the surface.

This drill bit set includes a counterbore for woodworking projects.

The blueprint specifies a counterbore depth of 5 millimeters.

We need to counterbore these holes to fit the flush-mount screws.

The counterbore diameter must match the screw head size precisely.

The machine operator adjusted the counterbore to avoid damaging the material.

Counterbore tools are essential for creating smooth, recessed connections.

She measured the counterbore twice to ensure accuracy before assembly.

The counterbore in the steel plate allows the nut to sit flush.

The carpenter used a hand counterbore to prepare the wooden beam for bolts.

From manufacturing to DIY projects, understanding how to use a counterbore ensures professional, secure connections. Have you encountered situations where a counterbore made a project easier?