Chip breaking method
1. After increasing the feed, the chips become thicker, which is beneficial to chip breaking.
2. The radius of the tool tip fillet becomes smaller and the chip thickness increases, which is beneficial to chip breaking.
3. Reduce front angle
Chip compression ratio=hc/h
The larger the compression ratio, the easier it is to break chips. But at the same time, the cutting resistance also increases.
The compression ratio is related to the linear speed Vc. When Vc decreases, the compression ratio increases, so reducing the linear speed is also beneficial to chip breaking.
The rake angle is reduced, the chip deformation is large, and the compression ratio is increased, which is beneficial to chip breaking.
4. Adopt sharp edge processing method
As can be seen from the figure below, under the same feeding conditions, the blade edge is blunt and sharp, which is beneficial to chip breaking.
5. Increase the main declination angle, the main declination angle becomes larger, and the chips become thicker, which is beneficial to chip breaking.
6. Protruding chip breaker
Promote chip breaking
Rubbing against the protrusions of the chip breaker creates dents on the surface of the chip and significantly increases the chip thickness → promotes chip breaking and is highly damaging.
Highly damaging
The contact area with the chips becomes smaller and the chips are smoothly discharged due to smooth contact with the protrusions → less damage to the tool
7. The curl radius of the chips becomes smaller
