光学学报, 2020, 40 (9): 0912001, 网络出版: 2020-05-06
行波管螺旋线的光学检测方法 
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Optical Measurement Method for a Traveling Wave Tube Helix
图 & 表
图 1. 行波管螺旋线的基本情况。(a)螺旋线外形;(b)螺距分布
Fig. 1. Basic information of TWT helix. (a) Helix's outline; (b) distribution of pitch
图 4. 点测量算法的螺距的测量误差。(a)测量方向与螺旋线轴向不平行;(b)误差来源示意图
Fig. 4. Measurement error of pitch based on point measurement algorithm. (a) Measurement direction deviates from helix axial direction; (b) schematic of error source
图 5. 外径带锥角的螺旋线的摆放高度变化(非比例模型)
Fig. 5. Change of placement height of helix with cone angle in outer diameter (not scaled)
图 7.
螺旋线摆放与调整装置。(a)等轴侧视图;(b)俯视图;(c)剖视图A-A;(d)局部放大视图B;(e)螺旋线被支撑位置与角度
Fig. 7.
Device of placement and adjustment of helix. (a) Isometric view; (b) top view; (c) section view of A-A; (d) partial enlarge view of B; (e) supported position and angle of helix
图 8. 在摆放装置上建立工件坐标系。(a)俯视图;(b)左视图
Fig. 8. Workpiece coordinate system on the placement device. (a) Top view; (b) left view
图 9. 线取景器自动滤波效果图。(a)毛刺示意图;(b)有效滤波;(c)滤波失效
Fig. 9. Automatic filtering effect based on linear viewfinder. (a) Schematic diagram of burr; (b) effective filtering; (c) invalid filtering
图 10. 螺带边界不平行导致的交点距离误差
Fig. 10. Error of distance between intersection points caused by unparallel boundary of helix strip
图 15. 内径自动寻边效果。(a)优化前;(b)优化后
Fig. 15. Automatical search results for the edge of inner diameter. (a) Before optimization; (b) after optimization
表 1各策略消耗的时间对比
Table1. Comparison of time consumed by each strategy
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表 2粗糙度测量结果
Table2. Roughness measurement results
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王建, 李飞, 方有维. 行波管螺旋线的光学检测方法[J]. 光学学报, 2020, 40(9): 0912001. Jian Wang, Fei Li, Youwei Fang. Optical Measurement Method for a Traveling Wave Tube Helix[J]. Acta Optica Sinica, 2020, 40(9): 0912001.
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