First of all, the milling cutter is a multi-tooth rotar […]
First of all, the milling cutter is a multi-tooth rotary tool, and each tooth is equivalent to a turning tool fixed on the rotary surface of the milling cutter.
When milling a tungsten steel cutter, the cutting edges that participate in the cutting at the same time are longer and there is no empty stroke, so the productivity is high. There are many types of milling cutters, their structures are different, and their applications are very wide. According to their purposes, they can be divided into three categories: milling cutters for machining planes, milling cutters for machining grooves, and milling cutters for forming surfaces.
Milling cutters of general specifications have been standardized and are generally produced by professional tool factories. Now introduce several common milling cutters.
End mills are the most commonly used milling cutters on CNC machine tools. There are cutters on the cylindrical surface and the end face of the end mill. The cutting edge on the cylindrical surface is the main cutting edge, and the sub cutting edge is distributed on the end surface. The cutting edge is generally helical teeth, which can increase cutting stability and improve machining accuracy. They can be cut simultaneously or separately. However, because there is no cutting edge at the center of the end face of an ordinary end mill, the end mill cannot be fed axially when working. The end face is mainly used to process the bottom plane perpendicular to the side. Mainly used for face milling, groove milling, step milling and contour milling.
Three-sided edge milling cutter
The three-sided edge milling cutter is referred to as the three-sided edge: the three cutting edges have rake angles, the cutting edges are sharp, and the cutting is light. Three-sided edge milling cutters can be divided into straight-toothed three-sided edges and misaligned three-sided edges. It is mainly used on horizontal milling machines to process stepped surfaces and shallow grooves that penetrate at one or both ends. In addition to the main cutting edge on the circumference, the three-side milling cutter has secondary cutting edges on both sides, which improves the cutting conditions, improves the cutting efficiency, and reduces the surface roughness value. However, after regrind, the width dimension changes greatly, and the three-sided insert cutter can solve this problem.
Face milling cutter
Face milling cutters have cutting edges that are perpendicular to the shank and the outer circle, and are mainly used for milling planes. The cutting edge of the outer circle is the main cutting edge, and the cutting edge on the end face plays the same role as the scraper. Face milling cutters have shorter cutting edges than sleeve end mills. Face milling cutters are mainly used on vertical or horizontal milling machines to process stepped surfaces and planes, especially for larger planes. Face milling cutters with a main deflection angle of 90 ° can mill wider stepped surfaces at the bottom. When using a face milling cutter to process a plane, there are many teeth involved in cutting, and the secondary cutting edge has a smoothing effect, so that the surface roughness value of the machining is small, so a large amount of cutting can be used, the productivity is high, and it is widely used.
Thread milling cutter
The traditional thread processing methods mainly use thread turning tools to turn threads or use taps and dies to manually tap and sling. With the development of NC machining technology, especially the advent of the three-axis linkage NC machining system, the more advanced thread machining method-NC milling of threads has been realized. Compared with traditional thread processing methods, thread milling processing has great advantages in terms of processing accuracy and processing efficiency, and it is not restricted by the thread structure and thread rotation direction when processing. For example, a thread milling cutter can process a variety of different rotation directions. Internal and external threads. For threads that do not allow a transitional buckle or undercut structure, it is difficult to process using traditional turning methods or taps and dies, but it is very easy to implement using CNC milling.
In addition, the durability of thread milling cutters is more than ten or even dozens of times that of taps, and in the process of CNC milling threads, it is extremely convenient to adjust the size of the thread diameter, which is difficult to do with taps and dies. Due to the many advantages of thread milling, the milling process has been widely used in large-scale thread production in developed countries. With the development of China's CNC machine tools, it has gradually been accepted and loved by Chinese customers. Thread milling is completed by the three-axis linkage function of the CNC machining center machine tool and G02 or G03 spiral interpolation instructions.
Thread milling cutter, as an advanced tool developed rapidly in recent years, is more and more widely accepted by enterprises, and shows excellent processing performance, becoming a powerful force for enterprises to reduce thread processing costs, improve efficiency, and solve thread processing problems. arms.