How do end mills choose and judge working conditions?

News-How do end mills choose and judge working conditions?

In recent years, machining center spindle is more and more speedy. For fitting the requirement of high speed machining on high hardness and strength materials and also prolonging mold life, the cutting tools advance its technology accordingly.

According to the processing demand, we will select the appropriate tool in accordance with the following recommendations:

  1. Basic cutting material of work piece, material properties, conditions, and manufacture processes….

    For example: customers’ demand about size, tolerance range, result up to mirror face, corner without joint point of tool exchange, cutting path of NC program, applications, and related issues.

  2. To clarify different material of cutting tools (like difference of hardness and strength…)

    Approx. types of cutters: single crystal diamond cutting tools, PCDs contenting CO diamond cutting tools, PCD containing Si diamond tools, PCBN cutting tools, metal porcelain cutters, tungsten carbide tools, HSS cutting tools, general steel cutters. Select proper cutting tools according to work piece.

  3. According to the special requirements of the work piece shape (for example: deep groove surface of work piece ...)

    Generally based around the shape, surface tensile, surface rotation, ball rounded shape, conic, cylindrical curve shape, and other relevant conditions of work piece to choose the shape of end mills. The neck types of end mills are divided into standard, long-neck, and cone-neck. Select cutters according to the machining depth of the work piece, shape, appearance, processing objects, crude/middle/fine three milling paths, and other related conditions. Long-neck and cone-neck types can process deep machining, it should take into account about the interference angle during selection in both .., Compared with the long-neck type, the high rigidity of the cone neck type milling cutter may promote cutting conditions and achieve better machining accuracy, you should choose cone-neck type end mills.

  4. According to the machining accuracy and delicate face of work piece to select different ball head accuracy and smooth edge end mills.

    The arc accuracy of ball end mills is typically ± 5μm; there are also ± 2 ~ 3μm high-precision end mills available for high-precision processing.

  5. According to the kinds and the hardness of the work piece to select the coating types of tools.

    BW TiALN coating is suitable for machining carbon steel and hardness below HRC40 of work piece; Nano titanium aluminum nitride film-NanoTiAlN coating is for alloy steel S, tool steel, and HRC50 work piece; BW TiALN + PLCcoating. Is good for higher hardness, hard alloy material of work piece.

  6. If the work pieces are hard-to-cut, and special material, you should choose high hardness cutters like metal ceramic and diamond tool.

    For example: if cutting metal composite material, you should choose BW metal ceramic cutter or PCBN diamond tool to solve cutting problems because the material is with high nickel content.