When choosing a milling cutter suitable for the machining task, various problems of the geometry, size and workpiece material of the part to be machined must be considered. The main declination angle of the milling cutter is the angle between the cutting edge and the cutting plane. The entering angle has a great influence on the radial cutting force and depth of cut. The magnitude of the radial cutting force directly affects the cutting work and the anti-vibration performance of the tool. Influence of entering angle: The smaller the entering angle of the milling cutter, the smaller the radial cutting force and the better the vibration resistance, but the cutting depth also decreases...

Polycrystalline diamond (PCD) is a polycrystal formed by mixing micron-sized diamond powder with a small amount of metal powder (such as Co) and sintering at high temperature (1400°C) and high pressure (6000MPa). Compared with other tool materials, PCD has extremely high hardness and wear resistance, high thermal conductivity, low thermal expansion coefficient, small friction coefficient, fast cutting heat dissipation, low cutting temperature, small thermal deformation, and can reduce the roughness of the machined surface. Features. But due to PCD and iron family element...

Processing characteristics of deep hole drills: 1. The shank is limited by the hole diameter, the diameter is small, and the length is large, resulting in poor rigidity and low strength. It is easy to generate vibration, ripple and taper during cutting, which affects the straightness and surface roughness of the deep hole. . 2. When drilling and reaming, it is difficult to input the cooling lubricant into the cutting area without using special devices, which reduces the durability of the tool and makes chip removal difficult. 3. In the process of deep hole processing, the cutting condition of the tool cannot be directly observed, and only by...

Deep hole machining has always been a difficult point in post-mortem machining, and its proportion is indeed indispensable. At present, in cutting processing, hole processing accounts for about 1/3 of the total processing, and deep hole processing accounts for 40% of hole processing! The general definition of deep hole is: the ratio of deep hole is L/D (the ratio of the depth dimension of the hole to the radial dimension of the hole is called the depth-diameter ratio of the hole) ≥ 6 is the deep hole...

A milling cutter made of cemented carbide is called a cemented carbide milling cutter. Cemented carbide is a powder metallurgy product sintered in a vacuum furnace or a hydrogen reduction furnace with cobalt or nickel as a binder and a carbide micron-sized powder of a high-hardness refractory metal as the main component. Carbide milling cutters are mainly divided into: solid carbide milling cutters, carbide straight shank slot milling cutters, carbide saw blade milling cutters, carbide end mills and carbide ball end milling cutters, etc. .