PCD Diamond Multi-flutes Cutting Tools Router Bits Radius Milling Cutters Bull Nose End Mills

Palton 20 Flutes Cutting Tools CNC Lathe Corner Radius Milling Cutters PCD Micro-Edge Bull Nose End Mills Composite Material

When your workpiece is CFRP, GFRP, high-silicon aluminum, or graphite, tool life isn't measured in hours—it's measured in parts. Conventional carbide end mills dull, chip, and generate unacceptable heat, leading to delamination, fiber fraying, and scrapped components.

This 20-flute PCD micro-edge bull nose end mill changes that equation. Twenty cutting edges working in concert, a diamond tip that refuses to wear, and a radiused corner geometry that protects against chipping—all engineered for the specific demands of composite and non-ferrous roughing and finishing.

Why 20 Flutes?

Higher Feed Rates, Shorter Cycle Times

With 20 flutes, each chip load per revolution is distributed across more cutting edges, allowing significantly higher feed rates while maintaining the same chip thickness per tooth. The result: more material removed per minute, fewer passes, and dramatically compressed cycle times.

Improved Surface Finish

More flutes mean a finer scallop height on the finished surface. For composite laminates and aluminum components that demand smooth, delamination-free edges, the 20-flute geometry delivers a finish that often eliminates the need for secondary sanding or polishing operations.

Balanced Cutting Forces

The dense flute pattern ensures that cutting forces remain evenly distributed around the tool circumference, reducing harmonic vibration and chatter—particularly critical when machining thin-walled composite panels or deep pockets.

PCD Micro-Edge – The Material Science Advantage

Wear Resistance That Defines Tool Life

PCD approaches the hardness of natural diamond, delivering exceptional resistance to the abrasive wear encountered when machining CFRP, GFRP, and high-silicon aluminum alloys. For composite machining, where carbide tools wear within hours and cutting edges round, PCD offers tool life measured in days or even weeks, significantly reducing tool change downtime and improving overall equipment effectiveness (OEE).

Clean Fiber Severance, No Delamination

When a carbide end mill dulls, carbon and glass fibers are pushed ahead of the rounding edge until they fracture and splinter. The result: fiber fraying, exit-side delamination, and scrapped parts. PCD's ability to stay sharp ensures fibers are cleanly severed, not displaced, maintaining edge quality and structural integrity of composite panels.

Low-Friction Cutting, Less Heat Generation

PCD's low coefficient of friction means less heat at the cutting zone. This is critical for composites and thermoplastics, where excess heat can melt resin matrices or cause thermal damage to the workpiece surface. The tool runs cooler, preserving both the cutting edge and the material being machined.

Bull Nose Corner Radius – Engineered Edge Strength

Eliminating the Weak Point

The corner radius on a bull nose end mill is not merely a design feature—it is a structural necessity. A sharp 90° corner is the most fragile point on any milling tool. By adding a specific radius to the cutting corners, stress concentration is significantly reduced, preventing premature edge chipping that typically leads to tool failure in high-speed operations .

Distributed Cutting Forces

The engineered R-angle distributes cutting forces over a larger area, exponentially reducing the risk of edge fracture during interrupted cuts or when machining abrasive composite materials. The result: predictable tool performance and consistent part quality across extended production runs .

Fillet Features in One Operation

When your part design requires radiused internal corners (fillets), the bull nose geometry machines them directly, eliminating the need for a separate finishing tool or EDM operation to achieve the required corner radius .

Micro-Edge Precision – Designed for Detail

The "micro-edge" designation reflects the tool's ability to perform precision milling at small diameters and tight tolerances. The edge geometry on Palton PCD end mills is ground with sub-micron precision on advanced CNC grinding systems.

Key micro-edge characteristics include:

Material Range

Industry Applications

Specification

Performance Summary