English Dictionary

twist drill

名詞

A rotating cutting tool, used for cutting holes in rigid materials, that consists of an essentially conical point, relieved and fluted to form cutting lips, and spiral flutes which direct the chips away from the lips and toward ejection from the hole.

日本語の意味

ねじりドリル：剛性材料に穴を開けるために使用される回転する切削工具。基本的には円錐状の先端を持ち、切削リップが形成されており、螺旋状の溝が切りくずを排出する役割を果たしている。

The machinist selected a twist drill to bore a clean hole in the hardened steel, its conical point and spiral flutes quickly directing chips away from the cutting lips.

機械工は硬化鋼にきれいな穴をあけるためにツイストドリルを選び、その円錐形の先端と螺旋状の溝が切りくずを切刃から素早く外へ導いた。

意味（1）

A rotating cutting tool, used for cutting holes in rigid materials, that consists of an essentially conical point, relieved and fluted to form cutting lips, and spiral flutes which direct the chips away from the lips and toward ejection from the hole.

twist drills （ plural ）