一种运载火箭贮箱整体成形箱底的数控加工方法

By combining a five-axis gantry machining equipment and a slotted tooling with an electromagnetic ultrasonic probe, the problem of inconsistent bottom wall thickness of rocket propellant tanks was solved, achieving high-quality, easily replicable tank bottom machining, and improving processing efficiency and equipment versatility.

CN118720646BActive Publication Date: 2026-07-17SHANGHAI SPACE PRECISION MACHINERY RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI SPACE PRECISION MACHINERY RES INST
Filing Date
2024-06-20
Publication Date
2026-07-17

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Abstract

本发明涉及一种运载火箭贮箱整体成形箱底的数控加工方法，包括：按理论廓线车削箱底内型面；将箱底套装在外型面铣削工装上；采用顶紧螺栓支撑箱底内型面；在标准型面上规划壁厚在机测量轨迹；沿测量轨迹在外型面上采用铣刀加工壁厚测量基准面；沿测量轨迹采用电磁超声测头在机扫描测量壁厚；根据壁厚实测数据和标准型面重构箱底实际内型面；按实际内型面并结合箱底模型，通过CAM软件偏置裁剪构造加工目标曲面；进行型面加工，割去工艺边。本发明数控加工方法通过采用常规五轴龙门加工设备，辅以壁厚在机测量并结合CAM软件曲面重构功能，解决了箱底壁厚尺寸难保证的问题，实现了箱底的高质量加工，是一种通用性强，易复制的箱底加工方法。
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