End milling cutter - Tungsten steel milling cutter parameters

When the end edge of the end milling cutter is used for CNC milling of workpiece cavities such as molds, when the cutting point is a concave or deep cavity, the extension of the end milling cutter needs to be extended. If a long edge end milling cutter is used, it is easy to cause vibration and tool breakage due to the large deflection of the tool. Therefore, during the machining process, if only the blade near the tool end is needed for cutting, a short edge long shank end milling cutter with a longer total length of the tool should be selected.

When using a large diameter end mill on a horizontal CNC machine tool to process workpieces, due to the significant deformation caused by the tool's self weight, it is important to pay more attention to the possibility of problems in end cutting. When using a long edge end mill, it is necessary to significantly reduce the cutting speed and feed rate.

There are many types of milling cutter shapes, which are used for machining grooves and straight contours on ordinary milling machines and CNC milling machines, as well as for machining cavities, cores, and curved surfaces/contours on milling and boring machining centers.

The milling cutter is generally divided into:

1. Flat end milling cutter: performs milling or rough milling, milling grooves, removing large amounts of blanks, and milling small areas of horizontal planes or contours;

2. Ball end milling cutter: perform surface semi milling and milling; A small knife can mill small chamfers on steep surfaces/straight walls.

3. Round nose milling cutter: performs rough milling with small surface changes, fewer narrow concave areas, and more relatively flat areas.

4. Flat end milling cutter: With chamfers, it can be used for rough milling to remove a large amount of blanks, and can also mill small chamfers on flat surfaces (relative to steep surfaces).

5. Formed milling cutter: includes chamfer cutter, T-shaped milling cutter or drum cutter, toothed cutter, and inner R-cutter.

6. Chamfer cutter: The shape of the chamfer cutter is the same as the chamfer shape, and it is divided into milling round chamfer and oblique chamfer milling cutters.

7. T-shaped cutter: capable of milling T-shaped grooves.

8. Tooth cutter: Mill out various tooth shapes, such as gears.

9. Rough milling cutter: A rough milling cutter designed for cutting aluminum copper alloys, capable of rapid machining.

There are two common materials for milling cutters: high-speed steel and hard alloy. The latter has higher hardness and stronger cutting force compared to the former, which can increase the speed and feed rate, improve productivity, make the tool less obvious, and process difficult to machine materials such as stainless steel and titanium alloy. However, the cost is higher, and the tool is easy to break when the cutting force changes rapidly.