Chip breakers improve surface quality
- May 13, 2020
Long chips that are difficult to evacuate can be dragged across the workpiece, leading to poor surface finishes. Insert life can also be severely reduced if these chips are re-cut by the insert, and in small-diameter applications stringy chips can wrap around the tool to the point where a crash occurs.
Use the FLM 3D chip-breaker design on PCD-tipped inserts for finishing aluminum components, where traditional flat-top inserts may produce a large continuous nest of chips that is difficult to remove from the bore or tool. Three different radius options are available: .008”, .016” and .031” for the insert TCGT2 (1.5).
For finishing in mild or construction steels, cermet inserts with chip-breaker form ELM should be used. Available in .008” radius and combined with a light depth of cut, this chip-breaker creates a high-shear angle to shorten the cutting chips for better evacuation and superior surface finishes in these traditionally difficult materials.