Фрезерный инструмент Sandvik 2026 - страница 10

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Selection guide Approach (entering/lead) angle Select the correct approach angle. This is crucial as it impacts chip thickness, cutting forces, and tool life. Decreasing the approach angle reduces the chip thickness (hex) for a given feed rate (fz), resulting in a chip-thinning effect that distributes the material over a larger portion of the cutting edge. However, a small-approach concept also generates high axial forces, which increase the pressure on the workpiece. 90º entering angle • Mostly radial cutting forces • Short tool assemblies • Thin-walled components • Unstable fixtures 90º • Where 90º form is required 45º entering angle • Balanced radial and axial cutting forces • General purpose first choice • Reduces vibration on long overhangs 45º • Chip-thinning effect allows increased productivity 10–15º entering angle • Radial and axial cutting forces will change depending on depth of cut • Strongest cutting edge with multiple indexes • General purpose cutter • Increased chip-thinning effect for heat resistant alloys 10–15º Round insert cutters • Mostly axial cutting forces • Long tool assemblies • Less tool stability • Stable workpiece setups • Generates thin chips, allowing for very high feed rates at small depths of cuts 6