Chip breaking is a concerning point for all users because for BTA head, chips are evacuated inside out. The hole diameter tolerance is typically +0.25 mm. The drill is equipped with a coolant system that is delivered through the body of the drill to reduce the cutting edge's temperature and flush out the chip through the flutes. The coolant pressure should be greater than eight bar and increases as the drill depth increases.
The indexable insert drill incorporates a cutting edge with a positive or negative axial lead angle. A chip-breakage recess is located along the flat surface of the drill and extends a small amount below the cutting face of the insert.
Chip-breaking indexable insert drills are available with a variety of carbide grades and geometries. Our company offers three different grades with two geometries. Using the right chipbreaker can improve drilling results. Chip-breaking indexable insert drills can also be customized for specific materials.
If you want to increase the productivity of your drilling process, choose an indexable insert drill with L and S breaker capabilities. These types of inserts feature high cutting performance and long tool life. In addition, they're compatible with both standard and deep hole drilling applications.
Chip breaking indexable insert drills have one effective cutting geometry with two or four inserts. Each insert has a 12deg positive rake angle. The helical flutes in the drill body help evacuate chips efficiently and help prevent deflection. Moreover, high bending moment opposes cutting forces and minimizes chatter.
Benefits of Indexable insert Drills
1. The new chip-breaking indexable insert drills from our company are a perfect match for machining soft steels and stainless steels.
2. The high-quality toolholders ensure the stability and quality of the hole while reducing tool wear.
3. Another important feature of this type of drill is its quick spindle reverse feature. This helps to dispose of loose chips and prevents them from being dragged into the tool change arm.
4. A major benefit of indexable insert drills is their low cost and versatility. They can be used to drill deep holes and rough surfaces. It is also essential to lower the feed rate when using an indexable drill to prevent chipping the insert. This helps the drill generate a good footprint on the work piece, which is essential for eliminating chipping. They are also more efficient compared to general-purpose drills.
Case Study in one customer from Vietnam:
Component Material:SKD61(4Cr5MoSi V1)
Cutting Parameter:
RPM:130
Feed:0.08-0.1mm/min
Hole Depth: 347mm
Hole Diameter:99.2
Case Solution:
Chips do not break and it is all dragged into the drill head. All the cutting parameters are proper, and we changed the insert chip breaker, and finally it achieves customer’s expectation.