In the field of precision machining, the selection of tools has a decisive influence on production efficiency and product quality. Corner Radius End Mill is a widely used high-performance tool. Its unique geometric design enables it to cope effectively with diverse and complex cutting tasks. However, it is worth noting that there is not a single type of corner end mill, but a variety of categories, each of which is optimized for specific processing needs, showing unique performance advantages and applicable scenarios. This article aims to explore the different classifications and characteristics of corner radius end mills in depth, in order to provide readers with more accurate selection guidance in actual production activities.

1. Classification by tool material

1. High-speed steel (HSS) corner radius end mill

The corner radius end mill made of high-speed steel performs well in processing soft materials with its good toughness and wear resistance. It is relatively cheap and is very suitable for processing low-hardness materials such as aluminum and copper. For small and medium-sized enterprises or projects with limited budgets, high-speed steel corner radius end mills are an affordable choice.

2. Carbide corner radius end mill

Carbide corner radius end mill is known for its extremely high hardness and heat resistance. It can work at a higher speed and feed rate and is suitable for processing high-hardness materials such as stainless steel and titanium alloy. Carbide tools have a long service life. Although the price is higher, a carbide corner radius end mill is definitely the first choice in situations where high precision and high efficiency are required.

3. Ceramic corner radius end mill

A ceramic corner radius end mill is an ideal choice for high temperature and high speed cutting conditions due to its excellent high temperature tolerance. This tool is particularly suitable for processing hard heat-resistant alloys such as nickel-based and cobalt-based alloys. Despite their extremely high hardness, ceramic tools are also relatively brittle, so they require operation in an extremely stable and controlled processing environment to achieve their best performance and ensure service life.

2. Classification by number of blades

1. Two-edge corner radius end mill

Two-edge corner radius end mill can provide a large cutting capacity during processing, so it is very suitable for materials with good chip removal performance such as aluminum alloy. Its design is simple, but it can perform roughing quickly, especially when a lot of cutting is required.

2. Four-edge corner radius end mill

The four-edge corner radius end mill has more cutting edges, which can bring more delicate cutting results and is very suitable for occasions where high-precision surface treatment is required. The four-edge design provides higher strength and rigidity, making it ideal for processing materials with higher hardness. Because of its low chip removal ability, it is more suitable for semi-finishing and finishing.

3. Multi-edge corner radius end mill

Because the multi-edge corner radius end mill has more blades, the feed rate per cut is relatively small, but the cutting speed is high. This tool is particularly suitable for precision machining and surface treatment, and is widely used in mold manufacturing and the processing of complex parts.

3. Classification according to tool coating

1. TiN (titanium nitride) coated corner radius end mill

TiN coating can significantly improve the wear resistance of the tool, extend the tool's life, and reduce the friction coefficient. It is suitable for general metal processing, such as cast iron, carbon steel and stainless steel. The golden appearance of the coating also makes it easy to identify.

2. TiAlN (titanium aluminum nitride) coated corner radius end mill

The high hardness and high heat resistance of the TiAlN coating make it perform very well in high-speed cutting. It can effectively prevent the tool from overheating, so it is suitable for processing high-hardness materials and high-temperature alloys. Especially in a dry cutting environment without coolant, TiAlN coated tools perform even better.

3. DLC (diamond-like carbon) coated corner radius end mill

DLC coating has excellent physical properties, including high hardness and extremely low friction coefficient, making it an ideal choice for processing sticky materials such as aluminum and copper. Because it can significantly reduce the friction between the tool and the workpiece, the DLC coating greatly extends the service life of the tool.

4. Classification by tool holder type

1. Round shank corner radius end mill

The round shank design is suitable for most machine tools and can quickly clamp and replace tools. The versatility of the round shank makes it the first choice in most processing occasions.

2. Taper shank corner radius end mill

The taper shank design has stronger stability and is particularly suitable for use in high-load, high-precision processing occasions. Taper shank tools have a better clamping effect and can provide higher processing accuracy.

5. Classification according to the application occasion

1. Roughing corner radius end mill

Roughing tools usually have a large rounded corner design, which can withstand large cutting forces and are suitable for occasions where a large amount of material is removed. They can complete a large amount of material removal in a short time and are ideal for improving processing efficiency.

2. Finishing corner radius end mill

Finishing tools usually have a small rounded corner radius and can provide an extremely high surface finish. They are often used in mold manufacturing and parts manufacturing that require precision machining to provide a smooth surface effect on the workpiece.

Conclusion: How to choose the suitable corner radius end mill for you?

Different types of corner radius end mills are suitable for distinct processing occasions. Whether you are doing roughing or finishing, choosing the ideal material, number of blades and coating will determine your processing efficiency and workpiece quality. If you need to achieve excellent surface treatment effects in complex molds or high-precision parts, then choosing a suitable corner radius end mill is crucial. Keeping in mind the properties of the tool and choosing according to the actual processing needs, you will be able to fully realize the potential of the corner radius end mill and improve overall processing efficiency.