Five-axis Tool Path Planning Of The Fillet-end Cutter Based On The Cutting Force

With the continuous development and progress of science and technology, walking in front of the world of aviation, aerospace, mold and other areas of manufacturing requirements also improve. Parts of these areas require most complex surfaces, and so it is difficult to take into account both the efficiency and accuracy for common-axis machine tools in the process. While five-axis CNC machine tools is widely used in the processing of complex surface parts. In five-axis CNC machining, a reasonable tool path planning is essential if you want to obtain a high efficiency and a high-precision machining result. Currently, domestic and foreign scholars' study of five-axis machining tool path planning is mostly for ball-end cutter. However, most of these studies have not considered the influence of the dynamic characteristics of the actual parts processing technology system on the machining precision, and it is difficult to meet the CNC machining requirements of the high efficiency and precision. Therefore, this paper studies the tool path planning of the fillet-end cutter based on the cutting force and the optimization of the tool position and orientation. The main research work and the novel contributions are listed as follows:1?A tangent interpolation algorithm of variable forward step with constant chord error is proposed to discrete tool path curves into individual CC points. It is not necessary to verify the maximum chord error between the two adjacent CC points when we use the new algorithm proposed in this paper, and it can also ensure that the actual chord error between the two adjacent CC points is equal.2?An improved method is proposed to calculate the CC points on the adjacent tool path. Under the condition of satisfying the scallop height, the maximum processing bandwidth is guaranteed, the total length of the tool path is shortened, and the machining efficiency is improved.3?Based on the cutting force model, a geometric model about the relationship between the instantaneous milling force and the posture angle of fillet-end cutter in five-axis machining tool is established. According to this model, the optimization model to calculate the tool position and orientation is deduced.