In the field of machining, milling cutter is one of the indispensable tools. A milling cutter is a rotary tool with one or more teeth for milling. When working, each cutter tooth successively intermittently cuts off the workpiece's margin. Milling cutter is mainly used for machining planes, steps, grooves, forming surfaces and cutting workpieces on milling machines. Among them, tungsten steel milling cutters show high productivity because of their long cutting edge and no empty stroke. There are many kinds of milling cutters with different structures and wide application range.
Among the many milling cutters, the end milling cutter is the most commonly used one on CNC machine tools. The cylindrical surface and end face of the end mill are provided with cutting edges, and the main cutting edge on the cylindrical surface is usually a spiral tooth, which is intended to improve the smoothness of the cutting and its processing accuracy. The end mill can cut multiple sides simultaneously or separately. It should be noted that because there is no cutting edge in the center of its end face, the end mill can not carry out axial feed when working, so its end edge is mainly used for machining the bottom plane perpendicular to the side. End milling cutter is widely used in surface
milling inserts, grooving inserts, step milling inserts and contour milling.
The end face and outer circle of the face milling cutter are provided with a cutting edge, which is perpendicular to the tool bar and is mainly used for milling the plane. The cutting edge at the outer circle is the main cutting edge, and the cutting edge at the end surface plays the role of the scraper. The edge of a face mill is shorter than that of a shell end mill. It is often used in vertical or horizontal milling machine to process step and plane, especially suitable for the processing of larger planes. When the main declination Angle is 90°, the face milling cutter can also be used to mill the wider bottom step surface. In the processing process, because there are more tool teeth involved in cutting at the same time, and the auxiliary cutting tool has a polishing effect, the roughness value of the machined surface is small. Therefore, a larger cutting amount can be used to improve productivity, so that the face milling cutter is widely used in the machining field.
Three-edge milling cutter, referred to as three-edge cutter, the three cutting edges are provided with back angles to ensure sharp cutting edges and brisk cutting. This kind of milling cutter can be divided into straight teeth three-sided edge and staggered teeth three-sided edge, which is often used for machining step surface and shallow grooves through one or two ends on horizontal milling machines. It is not only equipped with a main cutting edge at the circumference, but also with a secondary cutting edge on both sides, which optimizes the cutting conditions, improves the cutting efficiency, and reduces the surface roughness value. However, it should be noted that its width and size may change after regrinding, and the insert tooth three-edge milling cutter can effectively solve this problem.
Thread milling cutter, the traditional thread processing methods mainly include the use of thread turning tools for turning, or the use of taps, dies for hand tapping and sleeve. However, with the rapid development of numerical control technology, especially the popularity of three-axis CNC system, a more efficient and accurate thread machining method - CNC thread milling came into being. Compared with traditional machining methods, thread milling shows significant advantages in machining accuracy and efficiency. It is not limited by the thread structure or direction, and a thread milling cutter can easily deal with a variety of internal and external threads with different directions. For those threads that are difficult to handle with traditional methods, such as threads that do not allow for transition or retracting groove structures, CNC milling can be easily handled. In addition, the thread milling cutter is far more durable than the tap, and the adjustment of the thread diameter during the CNC milling process is also extremely convenient. These advantages make thread milling widely used in mass thread production in developed countries.
The above uses and types of milling cutters are shared here, milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting workpieces on milling machines. we have many kinds of grade and products series if you interested in please contact us in any time. please
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