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1)  small-scale cylinder
小尺度圆柱
2)  large-scale cylinder
大尺度柱
3)  Dimension circle
尺度圆
4)  Dimension sphere
尺度圆球
5)  dimension of small pillar
小煤柱尺寸
6)  Cylindricity
圆柱度
1.
Research on Cylindricity Error Evaluation Methods;
圆柱度误差评价方法研究
2.
Method for Cylindricity Errors Evaluation Using Particle Swarm Optimization Algorithm;
基于粒子群算法的圆柱度误差评定方法
3.
Measurement techniques of cylindricity with three-point method;
圆柱度的三点法测量技术
补充资料:55°圆柱管螺纹的型式和尺寸
British Pipe Thread (惠氏管螺纹) -- 圆柱 (BSPP/BSPF)
螺纹代号
基本尺寸
大径
mm
d=D
螺距
mm
p
每英寸牙数
tpi
中径
mm
d2=D2
小径
外螺纹
d3
牙型高度
H1
底孔尺寸
mm
G 1/8 1/8"9.7280.907289.1478.5660.5818.7
G 1/4 1/4"13.1571.3371912.30111.4450.85611.6
G 3/8 3/8"16.6621.3371915.80614.950.85615
G 1/2 1/2"20.9551.8141419.79318.6311.16219
G 5/8 5/8"22.9111.8141421.74920.5871.16220.75
G 3/4 3/4"26.4411.8141425.27924.1171.16224.5
G 7/8 7/8"30.2011.8141429.03927.8771.16228
G 1 1"33.2492.3091131.7730.2911.47930.5
G 1 1/8 1 1/8"37.8972.3091136.41834.9391.47935
G 1 1/4 1 1/4"41.912.3091140.43138.9521.47939.5
G 1 3/8 1 3/8" 44.3232.3091142.84441.3651.47941.5
G 1 1/2 1 1/2"47.8032.3091146.32444.8451.47945
G 1 3/4 1 3/4"53.7462.3091152.26750.7881.47951
G 2 2"59.6142.3091158.13556.6561.47957
G 2 1/4 2 1/4"65.712.3091164.23162.7521.47963
G 2 1/2 2 1/2"75.1842.3091173.70572.2261.47972.5
G 2 3/4 2 3/4"81.5342.3091180.05578.5761.47979
G 3 3"87.8842.3091186.40584.9261.47985.5
G 3 1/4 3 1/4"93.982.3091192.50191.0221.47991
G 3 1/2 3 1/2"100.332.3091198.35197.3721.47997.75
G 3 3/4 3 3/4"106.682.30911105.201103.7221.479104
G 4 4"113.032.30911111.55110.0721.479110.5
G 4 1/2 4 1/2"125.732.30911124.251122.7721.479123
G 55"138.432.30911136.951135.4721.479136
G 5 1/2 5 1/2"151.132.30911149.651148.1721.479148.5
G 6 6"163.832.30911162.351160.8721.479161.5
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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