center punch

• 一种在金属加工和木工中使用的工具，用于在工件表面打出小凹坑或压痕，通常用来为钻头定位或精确标记后续加工的位置。

A tool used in metalworking and woodworking to create a small indentation or dimple on a surface, typically to guide a drill bit or mark a precise location for further work.

1. Marking toolC1formal

   A tool used in metalworking to make a small indentation (a center mark) on a workpiece, which guides a drill bit or other tool.

   中心冲

   • Use a center punch to mark the exact spot before drilling.
   • The mechanic used a center punch to create a starting point for the screw.
   • A center punch ensures the drill bit doesn't wander off the mark.

2. Action of markingC1formal

   The act of using a center punch tool to create a small dent in a surface.

   打样冲眼

   • Center punching the metal sheet is a crucial first step.
   • He performed a precise center punch on the steel plate.
   • The technician demonstrated the correct way to center punch a workpiece.