How does the cemented carbide round rod ''transform'' the cemented carbide tool?

With the continuous improvement of the industrial level, the quality requirements for cemented carbide round rods are also continuously improved. In the high-precision machining industry, the runout of cemented carbide tools has a fatal impact on product accuracy, and the level of tool runout is mainly limited by the cylindricity of carbide bars. In the production process of cemented carbide rods, the cylindricity of the sintered bar blank is affected by the material and powder metallurgy process, so the cylindricity control of the cemented carbide finely ground rods is mainly in subsequent processing and special treatment.
In general, the main processing method of cemented carbide bars is centerless grinding. Centerless grinding is composed of grinding wheel, adjusting wheel and workpiece support. The grinding wheel is actually responsible for the grinding work. The adjusting wheel controls the rotation of the workpiece and makes the feed speed of the workpiece occur. As for the workpiece support, it is in the To support the workpiece during grinding, these three parts can have several ways of cooperation (except for stopping grinding), and the principle is the same.
Cylindricity is a comprehensive index to measure the roundness and straightness of the bar. The cylindricity of the cemented carbide bar is mainly affected by the center height of the workpiece, the amount of feed, the feed speed, and the rotation speed of the guide wheel in the centerless grinding process. Therefore, only by grasping the cylindricity index can the cemented carbide rod be successfully "transformed" into a high-quality cemented carbide tool.