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How to use CNC end mills correctly

(Summary description)Therefore, before the end mill is clamped, the handle of the end mill and the inner hole of the tool holder should be cleaned with cleaning fluid, and then dried before clamping.

How to use CNC end mills correctly

(Summary description)Therefore, before the end mill is clamped, the handle of the end mill and the inner hole of the tool holder should be cleaned with cleaning fluid, and then dried before clamping.

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End mills are usually coated with anti-rust oil when they leave the factory. If non-water-soluble cutting oil is used during cutting, a misty oil film will also adhere to the inner hole of the tool holder. When there is an oil film on the handle and tool holder, the tool holder will It is difficult to firmly clamp the tool holder, and the end mill is easy to loosen and fall during processing. Therefore, before the end mill is clamped, the handle of the end mill and the inner hole of the tool holder should be cleaned with cleaning fluid, and then dried before clamping.

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Due to the small gap between the end mill and the tool holder, the tool may vibrate during the machining process. Vibration will cause the cutting amount of the peripheral edge of the end mill to be uneven, and the cutting and expanding amount will be larger than the original value, which will affect the machining accuracy and tool life.
In the CNC milling process of workpiece cavity such as mold, when the cutting point is a concave part or a deep cavity, it is necessary to lengthen the extension of the end mill. If a long edge end mill is used, due to the large deflection of the tool, it is easy to generate vibration and cause the tool to break.
Therefore, in the process of processing, if only the blade near the end of the tool is required to participate in the cutting, it is best to choose a short-edged long-shank end mill with a long overall length of the tool.
The application range and application requirements of high-speed steel end mills are relatively wide. Even if the cutting conditions are slightly improperly selected, there will not be too many problems. Although cemented carbide end mills have good wear resistance during high-speed cutting, their application range is not as wide as that of high-speed steel end mills, and the cutting conditions must strictly meet the requirements of the tool.

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