What are the commonly used Zhongshan tungsten steel milling cutters in machine tool processing?
Do you know all kinds of milling cutters commonly used in machining?
First of all, the milling cutter is a multi tooth reversing cutter, and each tooth of the cutter is equivalent to a turning tool fixed on the reverse surface of the milling cutter.
When tungsten steel milling cutter is used for milling, the cutting edge is long and there is no idle stroke, so the production rate is high. There are many kinds of milling cutters, their structures are different, and they are widely used. According to their uses, they can be divided into three categories: plane milling cutter, groove milling cutter and forming surface milling cutter.
Milling cutters with general specifications have been standardized and are generally produced by CNC tool factories. This paper introduces several common milling cutters.
End mill is a kind of milling cutter with high frequency of use in CNC machine tools. There are cutting tools on the cylindrical surface and end face of the end mill. The cutting edge on the cylindrical surface is the main cutting edge, and the secondary cutting edge is scattered on the end face. The main cutting edge is generally spiral teeth, which can increase the cutting stability and improve the machining accuracy. They can be cut together or individually. However, because there is no cutting edge in the middle of the end face of the end mill, the end mill can not be fed axially during operation. The end face edge is mainly used to process the bottom plane which is straight with the side face. It is mainly used for plane milling, groove milling, step surface milling and profiling milling.
Three side edge milling cutter is referred to as three side edge: the three cutting edges have back angles, the edge is sharp, and the cutting is light and fast. Three side milling cutter can be divided into straight tooth three side edge and staggered tooth three side edge. It is mainly used in horizontal milling machine to process step surface and shallow groove through one end or two ends. In addition to the main cutting edge on the circumference, there are also auxiliary cutting edges on the two sides of the milling cutter with three side edges, which improves the cutting conditions, increases the cutting power and reduces the surface roughness value. However, after regrinding, the width size changes greatly, and the insert tooth three side edge milling cutter can deal with this problem.
The end face and outer circle of the face milling cutter and the cutter bar are straight with cutting edges, which are mainly used for milling the plane. The cutting edge of the outer circle is the main cutting edge, and the cutting edge of the end face has the same effect as the scraper. The edge of face milling cutter is shorter than that of sleeve end mill. Face milling cutter is mainly used in vertical milling machine or horizontal milling machine to process step surface and plane, especially suitable for processing large plane. The face milling cutter with main deflection angle of 90 ° can mill the step surface with wider bottom. When using face milling cutter to process plane, there are more cutter teeth involved in cutting together, and the polishing effect of auxiliary cutting edge makes the surface roughness of machining small. Therefore, it can use larger cutting amount, higher production rate and wide use.
The traditional thread processing method is mainly to use thread turning tool to turn thread, or to select tap, die technological tapping and thread setting. With the development of NC machining technology, especially the appearance of three-axis linkage CNC machining system, the more advanced thread processing method - NC milling of thread can be completed. Compared with the traditional thread processing method, thread milling has great advantages in processing accuracy and processing power, and is not limited by the thread structure and thread rotation direction. For example, a thread milling cutter can process a variety of internal and external threads with different rotation directions. It is very difficult to process the thread with transition thread or undercut structure by traditional turning method, tap and die, but it is very simple to use NC milling. In addition, the durability of thread milling cutter is more than ten times or even dozens of times of tap, and in the process of NC milling thread, the adjustment of thread diameter is particularly convenient, which is difficult to achieve by using tap and die. Because of the advantages of thread milling, milling technology has been widely used in the mass production of thread in developed countries. With the development of CNC machine tools in China, it has gradually been accepted and liked by Chinese customers. Thread milling is accomplished by means of three axis linkage function of CNC machine tool and G02 or G03 screw interpolation command.
Thread milling cutter, as an advanced tool developed rapidly in recent years, is more and more widely accepted by enterprises, and shows outstanding processing performance. It has become a powerful weapon for enterprises to reduce the cost of thread processing, improve the power and deal with the problems of thread processing.
Source: Zhongshan tungsten steel milling cutter http://yaoclub.cn
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What are the causes of chip accretion on NC tools?
The reason is that the chip bottom metal is embedded in the micro uneven peak valley on the front cutter surface due to the large down pressure in the part close to the cutting edge, forming a gap free metal to metal touch, which is called the bonding area. In the bonding zone, there will be a thin layer of metal data accumulated on the rake face at the bottom of the chip. The metal data of this part of the chip is severely deformed and strengthened at the appropriate cutting temperature. With t
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What are the wear types of tungsten steel milling cutters?
Abrasive wear machining materials often have some very hard particles, these particles will form grooves on the surface of the tool, which is the grinding loss. All surfaces are worn, especially the rake face. In addition, although the wear of hemp occurs at various cutting speeds, the wear caused by other reasons is not obvious due to the low cutting temperature at low cutting speed, so it is mainly the abrasion of abrasive materials. The lower the tool hardness is, the more serious the grindin