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随着航天技术的发展,特别是空间载人计划的实施,飞行器结构件朝着大型化和高精度的方向发展,对飞行器结构件提出了更高的精度要求和质量要求,以增强其运行的可靠性。传统加工精度控制方法,已很难满足生产实际不断提高的精度要求。以多体系统理论为基础,针对飞行器结构件,提出一种具有简捷、准确、通用特点的高精度加工方法,并通过建立误差补偿的数学模型,揭示出精密加工的物理本质,为实现飞行器结构件的精密加工提供了可靠的理论依据。实验结果表明,提出的理论方法,可使结构件的加工精度提高60%以上,这一结果充分证明了提出的理论和方法的正确性。
With the development of aerospace technology, especially the implementation of the space manned program, the aircraft structural components have been developed towards large-scale and high-precision, and have put forward higher precision requirements and quality requirements on aircraft structural components in order to enhance their operation reliability. The traditional control method of machining accuracy has been difficult to meet the actual production requirements of continuous improvement. Based on multi-body system theory, aiming at the structural parts of aircraft, a high-precision machining method with simple, accurate and common features is proposed. The mathematical model of error compensation is established to reveal the physical essence of precision machining. Pieces of precision machining provides a reliable theoretical basis. The experimental results show that the proposed theoretical method can improve the machining accuracy of structural members by more than 60%, which proves the correctness of the proposed theory and method.