High Hardness 4-Flute Inner R Corner Radius End Milling Cutters for Precision Machining

Q1.What are the main technical highlights of this high-performance internal R-profile milling cutter?
A:This tool integrates three core technologies: 1) Ultra-fine grain hard alloy substrate and advanced AlTiN/DLC coating, providing ultimate hardness, heat resistance and wear resistance; 2) Optimized four-edge design and helical angle, achieving low vibration, low cutting force and excellent chip removal; 3) Full-edge precision grinding and passivation treatment, ensuring consistent R-profile accuracy, smooth and uniform cutting edges, effectively reducing edge breakage and burrs, and optimized for high-speed machining (HSM) strategies.
Q2. How do the "one-piece molding" and "precise grinding" of the cutting tools affect the processing results?
A：The "one-piece molding" process ensures the overall strength and rigidity of the tool structure, reducing vibrations at their source. The "precise grinding" ensures that the internal R-angle size, edge shape and contour accuracy of each tool are strictly controlled within extremely small tolerances. This means that in batch processing, you can achieve extremely high repeatability accuracy and consistency, achieving stable one-piece molding effect and smooth surface quality without burrs.
Q3. How should the AlTiN coating and the DLC coating be selected? And for what scenarios are they respectively applicable?
A:AlTiN coating: It possesses extremely high hardness and outstanding high-temperature stability. It performs exceptionally well under high-speed and high-temperature cutting conditions, and is particularly suitable for processing materials such as steel, cast iron, stainless steel, and high-temperature alloys. It is an extremely versatile choice.
DLC coating (Diamond-like Carbon coating): The surface friction coefficient is extremely low, and it has extremely strong wear resistance and anti-adhesion properties. It is particularly suitable for processing有色金属 (such as aluminum alloys), graphite, composite materials and viscous materials， effectively preventing chip formation and achieving excellent surface finish. You can choose it based on the characteristics of the material to be processed.
Q4. How is the "efficient chip removal" and "low cutting force" design of the tool achieved?
A:This is attributed to our fluid dynamics-optimized groove shape and the specific helical angle design. This combination can:
Expand the chip retention space to facilitate the curling and expulsion of the chips.
Guide the chips to smoothly exit the processing area, avoiding entanglement and secondary cutting.
Reduce the friction between the cutting tool and the workpiece as well as the chips, thereby significantly reducing the cutting force and cutting heat. Ultimately, achieve a smoother cutting process, higher processing efficiency, and protect the cutting tool and the machine tool spindle.
Q5. In which industries and applications is this tool most advantageous to be used?
A:This tool is an ideal choice for fields such as mold manufacturing (e.g. cavities, electrodes), automotive components (e.g. engine parts, chassis parts), and general mechanical engineering parts. It is particularly suitable for situations that require high-precision inner corners, transition surfaces, semi-finishing and finishing of cavities. The design goal is to ensure excellent surface quality and dimensional accuracy while maximizing processing efficiency and tool life.