Establishment Of The Peripheral Milling Force Theory Model Based On The Deformation During Machining Process

With the development of modern science and technology, there are many thin-walled structural parts which are small, light and highly precise in the key technology areas. The frame body part of thin-walled part is mainly composed of side wall and web plate. This kind of workpiece is easily deformed duration the machining process which ultimately affects machining precision and machining quality of the workpiece. Thus the study of the relationship between the milling force and instantaneous deformation of thin-walled parts has important significance in deformation control in the manufacturing process of such parts.First of all, the analysis and research of the milling force of the undeformed parts is needed., Based on the instantaneous deformation chip thickness, by using the methods of calculating the cutting angles, definition the division of the milling area, determining the integral area of the milling force and so on to establish the milling force theory model in this paper. Use the orthogonal experiment to verify the milling force theory model.Use the finite element software to simulate the instantaneous deformation in the machining process of the thin-walled workpiece. Based on the deformation law of the thin-walled workpiece to adjust and correct the milling force theory model of the common parts to get the theory model for the thin-walled workpiece. Use the experiment of the thin-walled workpiece to verify the theory model.Sum up, The thin-walled milling force theory model established in this paper can forecast the milling force of the kind of workpiece. Lay the foundation for the subsequent research of the processing quality and deformation control and have certain theoretical guiding significance.