high performance end mills are non-standard cutters, which are mainly used for milling processing, and generally have one or more rotary cutters. high performance end mills are mainly used for processing planes, grooves, forming and cutting on milling machines. For the common milling forms of milling cutters in CNC machining, take a look at the following content.
There are many commonly used types of high performance end mills according to their use.
①Cylindrical milling cutter: used for processing planes on horizontal milling machines. The cutter teeth are distributed on the circumference of the milling cutter. According to the tooth shape, they are divided into straight teeth and spiral teeth. According to the number of teeth, there are two types: coarse teeth and fine teeth. The helical coarse-tooth milling cutter has fewer teeth, high tooth strength and large chip holding space, which is suitable for rough machining; fine-tooth milling cutters are suitable for fine machining.
②Face milling cutter: It is used to process plane on vertical milling machine, face milling machine or gantry milling machine. There are cutter teeth on the end face and circumference, and there are also coarse and fine teeth. Its structure has three types: integral type, insert type and indexable type.
③End milling cutter: used for processing grooves and step surfaces, etc. The cutter teeth are on the circumference and end surface, and cannot be fed along the axial direction during operation. When the end mill has end teeth passing through the center, it can feed axially.
④Three-sided face milling cutter: used to process various grooves and step surfaces, with teeth on both sides and the circumference.
⑤Viewpoint milling cutter: It is used to mill the groove into a certain view point. There are two kinds of single-angle and double-angle milling cutters.
⑥ Saw blade milling cutter: used for processing deep grooves and cutting off workpieces, with more teeth on the circumference. In order to reduce the conflict during milling, there are 15'～1° secondary deflection angles on both sides of the cutter teeth. In addition, there are keyway milling cutters, dovetail milling cutters, T-slot milling cutters and various forming milling cutters.
The structure of the milling cutter is divided into 4 types.
①Integral type: The cutter body and the cutter teeth are made into one body.
②Integral welding tooth type: The cutter teeth are made of cemented carbide or other wear-resistant tool materials and brazed on the cutter body.
③Inlaid tooth type: The cutter teeth are fastened to the cutter body by mechanical clamping. This kind of replaceable cutter teeth can be used as the cutter head of the integral cutter data, or it can be used as the cutter head of the welding tool data. The milling cutter with the cutter head mounted on the cutter body is called the internal sharpening type; the cutter head is individually sharpened on the fixture is called the external sharpening type.
④ Indexable type (see indexable tool): This structure has been widely used in face milling cutters, end mills and face milling cutters.
Milling cutters are divided into two categories according to the processing method of the tooth back.
① Sharp tooth milling cutter: Grind a narrow cutting edge on the back side to form a relief angle, because the cutting point of view is reasonable, its life is longer. The tooth back of the tine milling cutter has three methods: straight line, curved line and broken line. Straight tooth backs are often used for finishing milling cutters with fine teeth. Curved and broken-line tooth backs have better tooth strength and can withstand heavier cutting loads, and are often used for coarse tooth milling cutters.
②Relief tooth milling cutter: the back side is processed into Archimedes spiral tooth back by shoveling (or relieving grinding) method. After the milling cutter is blunt, only the front side needs to be reground to keep the original tooth profile unchanged. Used in the manufacture of various forming milling cutters such as gear milling cutters.
