Taking the superfinishing of thin-wall hole machining as an example, the design and application of combined carbide core drill and reamer are introduced.
以本厂簿壁孔精加工为例，介绍了硬质合金扩铰复合刀具的设计、结构参数、使用情况及应用效果。
Core drill
英语例句库
英语百科
Core drill
A core drill is a drill specifically designed to remove a cylinder of material, much like a hole saw. The material left inside the drill bit is referred to as the core.
Core drills used in metal are called annular cutters. Core drills used for concrete are generally called Diamond Core Drills and are water cooled. For drilling masonry, carbide core drills can be used.
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