4-Edge Left-Hand End Mill

Product introduction of Zhongyeda's high-quality 4-Edge Left-Hand End Mill:

1. Number and distribution of blades: It has 4 cutting edges, which are evenly distributed on the cylindrical surface. This design enables the tool to provide more stable cutting force during cutting, reduce vibration and noise, and thus improve the quality of the machined surface.

2.4-Edge Left-Hand End Mill: The blade groove rises from the lower right to the upper left, which conforms to the characteristics of left-handed tools. The left-handed design has advantages in certain specific processing scenarios. For example, when processing precision parts, it can avoid whitening of the blade and edge jumping of the workpiece cut. It is suitable for processing with high requirements for precision and surface quality.

3. Helix angle: It usually has a certain helix angle, and the size of the helix angle will affect the cutting performance of the tool. A larger helix angle can lengthen the contact line between the workpiece and the blade, distributing the load to a longer blade, which is beneficial to prolonging the tool life, but at the same time, the axial component of the cutting resistance will also increase, requiring the tool holder to have better rigidity.

4. Cutter core and chip groove: The 4-edge end mill has a relatively large cutter core, which increases the strength of the tool and enables it to withstand greater cutting forces. However, the larger cutter core also leads to a relatively smaller chip groove. Therefore, it is necessary to reasonably control the cutting parameters in terms of chip removal to ensure that the chips can be discharged smoothly and avoid chip blockage that affects the processing quality and tool life.

5. When the 4-Edge Left-Hand End Mill is installed on the spindle of a milling machine or machining center and rotates at high speed, the cutting edge of the tool contacts the surface of the workpiece, and the excess material on the workpiece is removed through the extrusion and shearing action of the cutting edge on the metal material. During the rotation of the left-hand end mill, the chips will be discharged to the upper left along the edge groove. Due to its left-hand characteristics, the chip discharge direction is opposite to that of the right-hand end mill. This chip removal method can better avoid scratches on the machined surface by chips in some machining conditions, thereby improving the finish of the machined surface.

The materials of the left-handed end mills are:

1. High-speed steel: It has good toughness and wear resistance, can withstand certain impact loads, and is suitable for processing various metal materials, especially for materials with lower hardness. High-speed steel 4-edge left-handed end mills are relatively cheap and have a long service life, making them a common choice.

2. Carbide: It has extremely high hardness and wear resistance, can maintain good cutting performance under high-speed cutting conditions, and has high processing accuracy and surface quality. Carbide 4-edge left-handed end mills are suitable for processing high-hardness metal materials, such as hardened steel, stainless steel, etc., as well as occasions with high requirements for processing accuracy and efficiency.

Widely used in

1. Precision parts processing: In the fields of aerospace, automobile manufacturing, electronics, etc., it is used to process various precision parts, such as engine blades, aviation bearings, automobile parts, electronic components, etc., which can ensure the dimensional accuracy and surface quality of parts.

2. Mold manufacturing: It can be used to process the mold cavity, core, slider groove and other parts of the mold. The mold has high requirements for accuracy and surface finish. The 4-edge left-handed end mill can meet these requirements and improve the quality and service life of the mold.

Medical device manufacturing: In the medical device manufacturing industry, it is used to process various precision medical device parts, such as orthopedic implants, dental instruments, etc., to ensure the accuracy and safety of the instruments.

According to the selection of processing materials: When processing tough materials such as steel parts, you can choose a high-speed steel or coated carbide 4-edge left-hand end mill; when processing brittle materials such as cast iron, you can choose a tungsten-cobalt carbide end mill; for high-hardness materials, you need to use a carbide with a high cobalt content or a superhard material such as cubic boron nitride.

According to the selection of processing technology: When roughing, you should pay attention to choosing a tool with a large feed rate, and at the same time consider the size of the tool's chip groove to avoid chip blockage; when finishing, focus on the accuracy and surface quality of the tool to ensure that the processed workpiece meets the design requirements.

Pay attention to the adjustment of cutting parameters: including cutting speed, feed speed and cutting depth. Reasonable cutting parameters can improve processing efficiency and quality, while extending the service life of the tool. When processing workpieces of different materials and shapes, adjustments need to be made according to actual conditions.