高精度弹丸质偏心测试系统及其误差分析

Design and error analysis of high accuracy inspecting system for measuring the centroid and centroidal deviation of bullets

弹丸质偏心是弹丸性能的重要设计参数,它们的准确测量对于提高产品质量、提高发射准确性是必不可少的。为了提高其测量精度和效率,详细介绍了基于三点法的弹丸质偏心测量原理、计算公式和测量设备,分析了测量误差产生的因素,提出了一座多测试平台和自动调平以及弹体自动旋转90°的设计思想。实验结果表明:这些方法极大地提高了系统的测量精度和试验效率,能够满足弹丸高精度质偏心测量的指标要求。该设备测量范围广、制造成本低,具有广泛的应用开发前景。

Centroid and centroidal deviation of bullets are important design parameters of bullets, and the measurement precision of these parameters is quite necessary to improve the production quality and shooting veracity. In order to improve the measurement accuracy and efficiency, this paper presents the working principle, the relevant calculation formulae and measurement equipment for measuring the centroid and centroidal deviation of bullets based on three point method. The main factors affecting precision are discussed, and a multiple measurement platform with automatic leveling and column structure autorotation of 90° is put forward in the paper. The given experimental resuits show that these methods can greatly improve the measurement precision and efficiency and satisfy the requirement for measuring the centroid and centroidal deviation of bullets with high accuracy. The equipment has wide measurement range, low manufacture cost and broad application and development prospect.