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End mills are one of the most commonly used machining tools in the precision mechanical processing industry. They are used on CNC milling machines to perform milling operations. And for the machining process to be stable, as well as the workpiece to meet the requirements, choosing the right type of milling cutter is an important part.

In this article, let's learn with Goldentec Vina how to choose the right end mills, and what you need to pay attention to when choosing end mills. Here are the details for you.


1. End mill size

The size of the end mill is related to the depth of the cut, and this is a parameter that you need to pay attention to when choosing a milling cutter. The groove to be cut needs to ensure the required depth, so it is necessary to choose the appropriate milling cutter length.

You also need to understand that the shorter the milling cutter length, the less vibration is reduced and the rigidity increases. But it should also be noted that the shorter the tip, the wider the blade diameter. Therefore, it is necessary to select end mills with sufficient length and diameter, so as to ensure the size of the cutting groove while minimizing the vibration of the tool when machining.



2. Materials for making milling cutters

The principle of choosing end mills in particular and metal cutting tools in general is to be made from a material harder than the hardness of the workpiece. Usually, the most commonly used tooling materials include:

Cobalt steel alloy (HSS, wind steel)
Carbide material.
If the workpiece is soft, such as copper, aluminum, you can use HSS milling cutters, for hard workpieces such as steel, cast iron, stainless steel, you can use carbide milling cutters. Usually, manufacturers of cutting tools will have parameters attached to the product, specifying which type of tool is used for which workpiece material, making it easier for users to choose.


3. Number of me

The flute number is the number of cutting edges of the milling cutter, it directly affects your milling process. End mills with a small number of blades, single groove are suitable for rough milling with large and soft workpieces. The number of milling cutters will allow faster tool working speed, finer cutting lines, suitable for fine milling, helping to ensure smooth surface of the work piece. Therefore, based on the material and working speed to choose the milling cutter with the appropriate flute number.


4. Blade profile

There are three common types of end mills for end mills: plane end mills, spherical end mills and corner mills (chamfered or rounded). In which with each profile, they will be used for different purposes, specifically as follows:

Flat end mills are for flat area cutting, grooving and squaring, making it the ideal milling cutter for plane milling.
Spherical end mills are used for machining complex surfaces and for machining high hardness workpieces. Used for roughing and finishing on various workpieces with high cutting capacity and high torsion angle suitable for creating highly smooth machined surfaces.
Angle end mills are used for milling deep recesses with rounded corners, suitable for finishing on high hardness materials.


5. Milling cutter coating

Not only milling cutters, but on most metal cutting tools there are coatings, which make the cutting tool harder and more resistant to chipping. Milling cutters made from HSS material usually do not have a coating, but for milling cutters made from carbide materials, there will be additional coatings of TiAIN, AITiN, etc. to increase hardness, wear resistance and increase heat resistance. milling cutter, thereby significantly increasing the working efficiency as well as the life of the tool.

This coating is also related to the workpiece material, the ability to escape chips, and anti-adhesion during machining. Usually, cutting tool manufacturers will have notes for users about the suitability of the coating on the tool with different types of workpieces, as well as its machinability.

6. Cooling method when machining

When choosing a milling cutter, you also need to pay attention to the cooling method, including radial cooling or ambient cooling. If radial cooling is available, you need to choose a milling cutter designed with a radial cooling hole.

The cooling process affects the life of the tool, the ability to escape chips when machining. If only cooling the surroundings can only help reduce the heat, but the ability to escape the chips is limited because water blows into the slot, which can cause chip jam. As for the radial cooling method, it will help to escape the chips easier and the cooling capacity is also more uniform.



7. Cutting mode

Cutting modes such as depth of cut, feed amount, number of feeds, cutting speed, etc. will directly affect the selection of the appropriate milling cutter. For this criterion, you need to be based on the product specifications given by the manufacturer to choose the right type of milling cutter. Better yet, contact your tool supplier for assistance in choosing the right milling cutter for your actual cutting.

Goldentec Vina Co., Ltd cooperates with the world famous cutting tool brands such as Taegutec, OSG, Egret tool,... we provide a wide range of face milling cutters, end mills that are highly responsive to the needs of customers. precision machining requirements. For advice on the most suitable type of milling cutter for your processing modes, please contact us immediately via the contact method below:


Contact us now for a free consultation and quote.




Address: 3rd Floor, 134/2A Alley 84/41, 30/4 Street, Phu Hoa, Thu Dau Mot City, Binh Duong Province, Vietnam (75000)

Hotline: (+84) 976063331 (Mr.Cho)

(+84) 965831631 (Mr. Linh)

Email:   cwg0212@golden-tec.vn (Korean)

Linh@golden-tec.vn (Vietnam)

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