New structure end milling cutter most popular for

  • Detail

New structure end milling cutter for oblique milling at present, many die and mold manufacturing workshops can use end milling cutters with smaller diameters to mill large holes and cavities of parts with high precision and efficiency on modern machine tools equipped with advanced CNC systems. Among them, the new oblique milling process originally developed for efficient milling of stainless steel with good market prospects plays a key role, and in production practice, To develop rapidly. With this unique new process, one or several oblique feed machining can be selected to repeatedly mill parts with deep cavities, such as mold cavities, until the cavities are processed and formed. You can also select appropriate pitch and other relevant parameters according to the processing materials, and make the tool move along the complex trajectory such as spiral in the large hole until the hole is processed to the required size

the use of new oblique milling technology is often limited by cutting tools. Only by truly understanding the real content of the new oblique milling process and improving the design on the basis of the existing end milling cutter structure, which is to live a comfortable and stable life, can we better meet the use requirements

brian Hoefler, milling product manager of Kennametal company (Latrobe, Pennsylvania), introduced the structural characteristics of the new mill 1 gripper end milling cutter they designed to meet the needs of oblique milling in detail

the most basic improvement design is to consider grinding a large back angle on the blade, he said. A large back angle can enable the end mill to carry out oblique cutting at a large angle, so that it can be processed to the bottom of the mold cavity at a faster speed, and the cutting process can be completed quickly, which greatly reduces the processing time and improves the production efficiency

another consideration is the processing quality of parts. When the end milling cutter cuts metal from the hole and mold cavity, it often leaves a lot of metal on the inner wall of the hole or cavity, which makes the surface roughness very poor, and generally requires post process processing. If a good surface roughness of the inner hole and the inner wall of the cavity can be obtained in one process, additional post process processing can be avoided

according to a large number of cutting tests, maintaining high relative position accuracy between various cutting edges (axial and radial cutting edges) of the blade and the tool center, such as good perpendicularity, parallelism, etc., can ensure that the machined inner hole and cavity surface achieve good surface roughness. Otherwise, even if a better roughness surface can be obtained, it will also leave a deep trace of tool connection after many times of cutting

the newly designed mill 1 machine clamp end mill has two characteristics that can solve the above problems. One is to design a fastening screw that can adjust an angle, so that the blade can be firmly locked in a precision machined positioning slot under the maximum tension of the screw. Its main purpose is to ensure that the blade always maintains a high relative position accuracy

another feature is that the side edge of the blade is designed as a more common cutting edge, which is fatal. Plastic bottles, plastic cans, plastic hoses, plastic caps and other types of containers with wider cutting edges are easier to achieve the goal of weight reduction. It is said that using such a cutting edge can improve the surface roughness of the machined parts compared with the narrow plane cutting edge. It will only leave invisible and unmeasurable knife marks on the surface of the parts, Mr. Hoefler said

the adjustable fastening screw also has the advantage of reducing processing time, because it can greatly improve the cutting speed. This is because the adjustable fastening screw can cancel the shear force acting on the fastening screw in high-speed cutting (the non adjustable fastening screw can only reduce the shear force of the fastening screw), and is only subject to a large tensile force, which provides a reliable guarantee for safe cutting at high speed. According to the comparative test, it can improve the cutting speed by 30% compared with the ordinary machine clamp end milling cutter, Mr. Hoefler said

technical measures such as grinding a large back angle on the blade, using a wide slightly circular cutting edge, and using adjustable angle fastening screws to clamp the blade can enable the end mill to carry out high-efficiency oblique cutting. (end)

Copyright © 2011 JIN SHI