There are many methods to manufacture diamond tools , including powder metallurgy sintering method, electroplating (casting) method, high temperature and high pressure method, brazing method, resin bonding method.One of the most widely used is powder metallurgy. Powder metallurgy methods used in the production of diamond tools include cold pressing sintering, impregnation, hot pressing and electric spark sintering. 1.Cold pressing Core sintering process The main function is to fully mix the prepared powder, through the mold to achieve the product (cutter) blank stamping forming, including dynamic cold pressing and automatic cold pressing to ensure the normal follow-up pressing. At present, oscillating 3D mixer is commonly used in diamond tool industry. The stirring equipment has three modes of motion: rotation, translation and swing, and reversal. The movement trajectory of powder is three-dimensional, which can make the powder mixed evenly in a short time and refi...