The Simulation System For Turn Milling Machined Surface Texture

Work pieces, such as impellers and screws, are widely used in automobile, watercraft and spaceflight fields. It is hard to process them by turning because of their big sizes and unique shape. But turn-milling is a good choice. The work pieces needn't rotate in a high speed, so the big size and unique shape are no longer problems. Besides, the quality is good. So turn-milling is more and more widely used.As a new process way, turn-milling's rules are not as clear as other traditional processing ways. Although it can get good quality, the efficiency is not so satisfying. So it is very necessary to discovery the rules of turn-milling in order to choose reasonable processing parameters.According to the positions of the tool and work piece, turn-milling can be classified into axial and perpendicular turn-milling. Many researchers has been working on them based on geometric analysis. Geometric analysis is a method of attaining the machined surface roughness by computing the relative geometric position of work piece and tool. But it is hard to access the surface texture in this way. The issue is solved with computer simulation system.The computer simulation system for axial turn-milling machined surface texture was developed based on a mathematical model of the axial turn-milling process. With the simulation system, quantitative analysis of machined surface and the relationship between the machined surface texture and axial feed rate, ratio of rotational speed, number of tool edges, radius of tool, and the depth of cutting can be carried out to find more accurate rules of turn-milling process.