What is the source of milling force in precision machining
In precision parts processing, the milling process is the interaction between the milling cutter and the workpiece, and therefore consumes power. Milling force directly affects the generation of cutting heat, and further affects tool wear, tool life and the quality of machined surfaces. In production, the milling force is also the necessary basis for determining the power of the computer machine and the clamping force. Therefore, it is of practical significance to study the variation law of the milling force and estimate the milling force and power.
The source of milling force There are two aspects of the source of milling force: one is the resistance caused by the elastic deformation and plastic deformation of the cutting layer metal, cutting and surface layer metal of the workpiece; The second is the friction resistance between the milling cutter and the chip and the workpiece surface. As the number of teeth, cutting thickness and milling position involved in the milling process in precision parts processing are constantly changing, the size, direction and action point of cutting force are also constantly changing. In order to facilitate the analysis, the total milling force on a pair of force bearing bodies (milling cutter and workpiece) is generally decomposed in a certain direction, and the change of each milling force component is analyzed, so that the change rule of milling force can be mastered.
