Semi-automatic electromagnetic riveting actuator development and riveting verification of aerospace conical parts
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摘要: 针对航天锥形筒状结构件典型的铆接特点，文章提出了用半自动化电磁铆接技术实现其高质量、长寿命连接的方案；设计了包括轴线调整机构、缓冲机构、导向机构和刹车机构的半自动化电磁铆枪系统；完成了电磁铆接后坐力测算试验，分析了电磁铆接后坐力特征，得到1 000 V电压下电磁铆接后坐力动量略小于30 N·s，可为电磁铆接缓冲机构精准设计提供支撑；完成了气动铆枪和电磁铆枪铆接强度对比试验，验证了半自动化电磁铆枪解决航天锥形件高质量、长寿命连接难题的可行性。Abstract: A semi-automated electromagnetic riveting technology was proposed to achieve high-quality and long-life connections for the typical riveting characteristics of aerospace conical cylindrical structural components; The semi-automatic electromagnetic riveting actuator system that including axis adjustment mechanism, buffer mechanism, guide mechanism and brake mechanism was designed. The impact recoil calculation test was completed and the recoil characteristics of electromagnetic riveting was analyzed. It is found that the recoil impulse of electromagnetic riveting is slightly less than 30 N·s under 1 000 V, which can provide support for the precise design of electromagnetic riveting buffer mechanisms. The comparative test on the riveting strength of ordinary pneumatic riveting and electromagnetic riveting was completed, which verifies the feasibility of semi-automatic electromagnetic riveter to solve the problem of high-quality and long-life connection of conical cylindrical structures.
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Key words:
- electromagnetic riveting /
- conical cylinder /
- structural design /
- recoil /
- strength test
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表 1 最大剪切力对比
序号 气动铆接 电磁铆接 1 2.82 kN 2.87 kN 2 2.75 kN 2.77 kN 3 2.58 kN 2.83 kN 4 2.75 kN 2.82 kN 5 2.61 kN 2.81 kN 平均值 2.70 kN 2.82 kN 方差 8.38×10−3 1.04×10−3 
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表 2 最大拉脱力对比
序号 气动铆接 电磁铆接 1 3.87 kN 4.05 kN 2 3.93 kN 3.96 kN 3 3.88 kN 3.95 kN 4 3.79 kN 4.01 kN 5 3.78 kN 3.94 kN 平均值 3.85 kN 3.98 kN 方差 3.24×10−3 1.74×10−3
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