Therefore, lead angle cutters are recommended when maximum material removal is the objective. Thinning the chip allows the feed rate to be increased. Lead angles can range from zero to 85 degrees. The ...

For example, with a 90-degree cutter with at least 50% radial engagement, the chip thickness equals the feed per tooth (fz). With a 45-degree cutter, the chip thickness is only 70% fz, and if the lead ...

However, a large positive rake angle means a weaker cutting edge. The insert can have various lead angles. On straight or neutral inserts the lead angle is zero. This design provides a stronger ...