The milling cutter is a multi-tooth rotary tool for precision parts processing, and each tooth is equivalent to a turning tool fixed on the rotating surface of the milling cutter. In the milling process, the cutting edge that participates in the cutting at the same time is longer, and there is no idle stroke, so the productivity is higher.
There are many types of milling cutters, different structures, and a wide range of applications. According to their use, they can be divided into three categories: milling cutters used to machine flat surfaces, milling cutters used to machine grooves, and milling cutters used to machine shaped surfaces. General purpose milling cutters have been standardized and are usually produced by professional tool factories. Now introduce several commonly used milling cutters.
- Face milling cutter
Face milling cutter, the main cutting edge is distributed on the cylindrical or conical surface, the end face cutting edge is the secondary cutting edge, and the axis of the milling cutter is perpendicular to the processed surface. Plane milling cutters are mainly used to process stepped surfaces and planes on vertical milling machines or horizontal milling machines. They are particularly suitable for handling larger aircraft. A face milling cutter with an entry angle of 90° can mill a wider stepped surface at the bottom.
The plane milling cutter is used to process the plane, while more teeth are involved in the cutting, and the secondary cutting edge has a dressing effect, so the surface roughness value is small, so the larger the cutting amount can be used, and the productivity is higher. Wide range of applications.
- End mill
End mills are the most commonly used milling cutters for milling in precision parts processing. Its structure is that the cutting edge on the cylindrical surface is the main cutting edge, the secondary cutting edges are distributed on the end surface, and the main cutting edge is usually helical teeth, which can increase the cutting stability and improve the machining accuracy.
Since the center of the end face of the ordinary end mill has no cutting edge, the end mill cannot be fed axially during work. The end edge is mainly used for processing the bottom surface perpendicular to the side surface. End mills are mainly used for machining grooves, stepped surfaces and molding surfaces using mother boards.
- Three-sided milling cutter
Three-sided milling cutters can be divided into three-sided straight teeth and three-sided staggered teeth. It is mainly used on horizontal milling machines to process stepped surfaces and shallow grooves through one or two ends. In addition to the main cutting edge on the circumference of the three-sided milling cutter, there are auxiliary cutting edges on both sides, thereby improving the cutting conditions, increasing the cutting efficiency, and reducing the surface roughness value. However, the width dimension changes greatly after re-grinding, and the toothed face milling cutter can solve this problem.
- Thread milling cutter
Thread milling is a method of machining threads using precision parts, which was first popular in Europe and the United States. With the development of China’s Cnc Machine tools, it has gradually been accepted and loved by Chinese customers. Thread milling uses the three-axis linkage function of the cnc machining center and the G02 or G03 spiral interpolation command to complete the thread milling work.
As an advanced tool that has developed rapidly in recent years, thread milling cutters are becoming more and more widely accepted by enterprises and show excellent processing performance. It has become an enterprise that reduces the cost of thread processing, improves efficiency and solves thread processing.