What Types of Indexable Drill Inserts Do We Have?
What is an indexable drill?
The indexable drill bit is also commonly called U type drill, violent drill, water-filled drill, etc. The indexable drills are made of high quality die steel and carbide inserts. It is equipped with a water outlet hole at the bottom of the drill point and has a high efficiency compared to ordinary drills, and can process up to 5 times deep hole the diameter of the drill at stable cutting conditions.
The main advantage of the indexable insert bit is the replacement of the blade of the drill bit. When the cutting edge of the drill blade becomes dull, it is indexed or turned to reveal a new cutting edge.
What types of indexable insert drills we have?
At present, the indexable insert drills (U-drills) are roughly divided into four types: 2 times diameter(2xD indexable drill), 3 times diameter(3xD), 4 times diameter(4xD), and 5 times in diameter(5xD). The “X twice diameter” can be directly interpreted as the length of the edge of the fast drill is a multiple of the diameter of the blade. It can be referred to as the aspect ratio of the diameter and length of the drill bit.