Zvyšování produktivity obrábění s využitím efektivních frézovacích strategií CAM systémů

Abstract

When milling pockets and corners of standard strategies, the problem arises because it increases the angle, depth of cut and compacted to splinter that is discharged from the cutting edge. Programmer / technologist must be selected when setting the cutting parameters permissible angle and also the appropriate feed rate. In the transition from the linear movement of the tool into a corner angle changes and the need to reduce the traversing speed of the tool. Cutting tool, cutter, must be driven into the corners of the lower feed rate than milling in a straight line, so there was a smooth tooth meshing cutter and chip removal from the cutting area. When changing traverse speeds, from higher to lower and vice versa, there are jerks tools and machine vibrations. This adverse effect has an impact on the life of the tools, machines, and the resulting machined surface of the workpiece. In extreme cases, can lead to chipping, overall damage to the tool and tool holder or damage to the machine spindle. For this reason, the optimal solution to ensure the same feed rate, smooth machining operation, a constant angle and continuous toolpath. The continuous development of milling strategies to arrive at the development of highly efficient milling strategies, the essence of the whole cutting length machining tools, continuous track and constant angle. Technology efficient milling strategies were designed to optimize Angle tools to take advantage of a flute carbide solid carbide end mills. Ideology efficient milling strategy is automatically adjust toolpath so that the angle during the machining process did not change and did not exceed the maximum permissible value. These milling strategies are in CAM applications available as plugins. This work presents a comparison of effective programmed milling strategies available in CAM applications. The comparison was performed on machined part different milling strategies. Criteria for comparing the geometric precision machined surface roughness parameters Ra and Rz and residual stress. With a better understanding of today's milling techniques and tool technologies can streamline the production process, reduce the number of machine cycles, increase tool life and its stability, improve tolerance of workpiece and achieve a high quality surface finish of molded parts.