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Chip load is a critical parameter in CNC milling that influences tool performance and longevity. It refers to the amount of material removed by the cutting edge of the tool during each revolution or pass. Proper management of chip load can improve machining efficiency and extend tool life.
What Is Chip Load?
Chip load is measured in units such as millimeters per tooth or inches per tooth. It determines how much material each cutting edge removes in a single pass. Too high a chip load can cause excessive wear or breakage, while too low can lead to inefficient cutting and increased machining time.
Impact on Tool Life
Maintaining an optimal chip load is essential for maximizing tool life. A proper chip load reduces heat buildup and minimizes stress on the cutting edges. Conversely, an improper chip load can accelerate tool wear and lead to premature failure.
Factors Affecting Chip Load
- Material hardness
- Tool diameter
- Cutting speed
- Feed rate
- Tool geometry