First: end milling cutter
End milling cutter is a kind of milling cutter used most in CNC machine tools. There are cutting cutters on the cylindrical surface and end face of the end milling cutter. The cutting edge on the cylindrical surface is the main cutting edge, and the end face is distributed with auxiliary cutting edges. The main cutting edge is generally spiral teeth, which can increase the cutting stability and improve the machining accuracy. They can be cut simultaneously or separately. However, because there is no cutting edge at the center of the end face of the ordinary end mill, the end mill cannot be fed axially when working, and the end edge is mainly used to process the bottom plane perpendicular to the side. It is mainly used for plane milling, groove milling, step surface milling and profiling milling.
The second type: three face edge milling cutter
Three sided milling cutter is abbreviated as three sided cutter: the three edges have back corners, and the edges are sharp and light to cut. Three face edge milling cutter can be divided into straight tooth three face edge and staggered tooth three face edge. It is mainly used on horizontal milling machines to process step surfaces and shallow grooves with one or both ends penetrating. In addition to the main cutting edge on the circumference, there are also auxiliary cutting edges on both sides of the three face edge milling cutter, which improves the cutting conditions, improves the cutting efficiency, and reduces the surface roughness value. However, the width changes greatly after regrinding, which can be solved by the inserted three face edge milling cutter.
Third: face milling cutter
The face milling cutter has cutting edges on the end face and excircle perpendicular to the cutter bar, which are mainly used for milling planes. The cutting edge of the outer circle is the main cutting edge, and the cutting edge of the end face plays the same role as the scraper. The cutting edge of face milling cutter is shorter than that of sleeve end milling cutter. Face milling cutter is mainly used on vertical milling machine or horizontal milling machine to process step surface and plane, especially suitable for processing larger plane. Face milling cutter with main deflection angle of 90 ° can mill step surface with wide bottom. When machining a plane with a face milling cutter, there are many cutter teeth participating in cutting at the same time, and there is the polishing effect of the auxiliary cutting edge, which makes the machined surface roughness value small. Therefore, larger cutting parameters can be used, with higher productivity and wide application.
Fourth: thread milling cutter
The traditional thread processing methods are mainly turning threads with thread turning tools or manual tapping and threading with taps and dies. With the development of NC machining technology, especially the emergence of three-axis CNC machining system, the more advanced thread machining method - thread NC milling can be realized. Compared with traditional thread processing methods, thread milling has great advantages in processing accuracy and processing efficiency, and is not limited by thread structure and thread direction. For example, a thread milling cutter can process a variety of internal and external threads with different rotation directions. For threads that are not allowed to have transition threads or undercut structures, it is difficult to machine with traditional turning methods or taps and dies, but it is very easy to realize with NC milling.
In addition, the durability of thread milling cutter is more than ten times or even dozens of times that of tap, and in the process of NC milling thread, it is very convenient to adjust the diameter and size of thread, which is difficult to do with tap and die. Due to the many advantages of thread milling, the milling process has been widely used in mass thread production in developed countries. With the development of CNC machine tools in China, they are gradually accepted and loved by Chinese customers. Thread milling completes thread milling with the help of the three-axis linkage function of CNC machine tool and G02 or G03 spiral interpolation command.
As an advanced tool with rapid development in recent years, thread milling cutter is becoming more and more widely accepted by enterprises, and shows excellent and extraordinary processing performance. It has become a powerful weapon for enterprises to reduce thread processing costs, improve efficiency and solve thread processing problems.