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农机零部件加工中五轴数控加工中心刀具算法应用

Application of Five Axes NC Machining Center Tool Algorithm in Agricultural Machine Parts Processing

摘要:

为了解决复杂农机零部件的高精度加工难题,在加工工序中引入了五轴数控加工技术,并采用自适应差分算法对加工刀具的轨迹进行了优化,从而有效提高了农机复杂零部件的加工效率和加工精度。在五轴数控加工过程中,需要建立切削模型,但五轴加工过程中的刀具矢量是不断变化的,其计算较为复杂,而本次引入的自适应差分算法可以利用初始化参数数据和曲线拟合方法,确定最佳的走刀轨迹。为了验证算法的可靠性,对刀具轨迹优化效果进行了仿真测试,测试结果表明:采用刀具优化算法后在复杂的零件拐角部位可以得到更佳的走刀轨迹。最后对系统进行了实际的加工实验测试,测试结果表明:采用该数控加工系统可以得到高精度的复杂农机部件的加工效果,为现代农机复杂零部件的加工提供一种新的方向。

Abstract:

In order to solve the high-precision machining problems of complex farm machinery parts and components, a five-axis CNC machining technology was introduced into the machining process, and the path of the machining tools was optimized by using the adaptive differential algorithm, thus effectively improving the machining efficiency of complex parts of agricultural machinery And processing accuracy. In the process of five-axis NC machining, the cutting model needs to be established. However, the tool vector in five-axis machining process is constantly changing, and the calculation is complicated. However, the adaptive differential algorithm introduced this time can use the initialization parameter data and the curve fitting Method to determine the best path to go. In order to verify the reliability of the algorithm, the tool path optimization results are simulated and the test results show that the tool path optimization algorithm can get a better path in the corner of complex parts. Finally, the actual machining experiment is carried out on the system. The test results show that the processing effect of complex agricultural machinery parts with high precision can be obtained by the NC machining system, which provides a new direction for the processing of complex agricultural machinery parts.

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