How to choose alloy milling cutter correctly
Date:
20/04/24
The milling cutter made of cemented carbide is called cemented carbide milling cutter. Cemented carbide is a powder metallurgical product made of high-hardness, refractory metal carbide micron powder as the main component; cobalt or nickel as a binder and sintered in a vacuum furnace or a hydrogen reduction furnace.
The milling cutter made of cemented carbide is called cemented carbide milling cutter. Cemented carbide is a powder metallurgical product made of high-hardness, refractory metal carbide micron powder as the main component; cobalt or nickel as a binder and sintered in a vacuum furnace or a hydrogen reduction furnace.
Cemented carbide milling cutters are mainly divided into: solid carbide milling cutters, cemented carbide straight shank groove milling cutters, cemented carbide saw blade milling cutters, cemented carbide end mills and cemented carbide ball end mills.
1. The use of cemented carbide milling cutter:
Carbide milling cutters are generally used in CNC machining centers and CNC engraving machines. It can also be installed on an ordinary milling machine to process some hard and uncomplicated heat-treated materials. details as follows:
1. Carbide angle milling cutter: used for milling grooves at a certain angle, there are two kinds of single-angle and double-angle cutters.
2. Carbide face milling cutter: used for vertical milling machine, face milling machine or gantry milling machine processing plane, there are cutter teeth on the end surface and circumference, there are also coarse teeth and fine teeth. Its structure has three types: integral type, insert type and indexable type.
3. Carbide three-sided edge milling cutter: used to process various grooves and step surfaces, with teeth on both sides and circumference.
4. Carbide end mills: used for processing grooves and step surfaces, etc. The cutter teeth are on the circumference and end surfaces, and cannot be fed along the axial direction when working. When the end mill has end teeth passing through the center, it can feed axially.
5. Carbide cylindrical 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 can be divided into straight teeth and spiral teeth. According to the number of teeth, it can be divided into two types: coarse teeth and fine teeth. The helical coarse-tooth milling cutter has a small number of teeth, the strength of the cutter teeth is high, and the chip space is larger, which is suitable for rough machining; fine-tooth milling cutters are suitable for finishing.
2. Carbide milling cutter milling method
The feed direction of the carbide milling cutter relative to the workpiece and the rotation direction of the milling cutter mainly have the following two milling methods:
1. Down milling. The direction of rotation of the milling cutter is the same as the feed direction of the cutting. When starting cutting, the milling cutter bites the workpiece and cuts off the final chips.
2. Up-cut milling. The rotation direction of the milling cutter is opposite to the cutting feed direction. The milling cutter must slide on the workpiece for a period of time before cutting, starting with the cutting thickness as zero, and reaching the maximum cutting thickness at the end of the cutting.
During down milling, the cutting force presses the work piece against the work table, and during up milling, the cutting force makes the work piece leave the work table. Because the cutting effect of down milling is the best, down milling is usually selected. Only when the machine has thread clearance problems or problems that cannot be solved by down milling, can you consider choosing up milling.
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