End mills are divided into high-speed steel end mills and cemented carbide end mills, which are mainly used for processing grooves, step surfaces, planes and two-dimensional surfaces (such as the contour of a plane cam).https://retractable-dog-leash.com/
An end mill usually consists of 3-6 teeth. The main cutting edge of each tooth is distributed on the cylindrical surface, in a spiral shape, and its helix angle is between 30-45, which is beneficial to improve the smoothness of the laser cutting effort and improve the machining accuracy; the secondary cutting edge of the tooth is distributed in the The end surface is used to process the bottom plane perpendicular to the side surface. The main cutting edge and the secondary cutting edge of the end mill can be cut at the same time or separately. End mills are classified into coarse-tooth end mills, middle-tooth end mills and fine-tooth end mills according to the number of teeth, as shown in Table 3.2. Coarse end mills have fewer teeth, high strength, and large chip space. Suitable for rough machining; fine-tooth end mills have many teeth, work smoothly, and are suitable for finishing; middle-tooth end mills are between coarse-tooth end mills and fine-tooth end mills.
End mills with smaller diameters are generally made into a tapered form, which can be divided into straight (2-71mm end mills), Morse taper (6-63mm end mills) and taper with a taper of 7; 24 (25-80mm end mill) three kinds. End mills with a diameter greater than (40-60mm) can be made into a complete structure. Carbide indexable helical tooth interchangeable head cnc milling cutter, as shown in Figure 3.4, this end mill adopts a modular structure, one end mill The toolholder can be installed with four different replaceable cutter heads to become four different end mills. They are the end mills with two effective teeth short in the front; the end mills with four effective teeth at the front end; there are end teeth End mills for cnc machining holes and slots; ball end mills. After the replaceable head is worn, only the replaceable tool head can be replaced and it can be reused, which reduces the cost of the tool and improves the productivity.