Development of the New Generation National Primary Standard for Gear Helix Calibration
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摘要: 围绕建立国家齿轮螺旋线基准这一核心目标,立足自主研发,成功研制了我国首台复合式齿轮螺旋线基准装置,装置将复杂的空间三维曲线测量转化为激光干涉测长和回转角度自校准的同步测量,独创性实现了长度和角度的最短溯源链条。经国际比对验证,装置校准及测量能力达到国际先进水平。基准装置的研发成果已在国内各校准机构、大学、齿轮制造企业得到广泛的应用,对保障我国齿轮产业发展提供了强有力的技术支撑。Abstract: Focusing on the goal of establishing a national primary standard for gear helix calibration, the first hybrid gear helix measurement standard has been developed successfully by independent research, which transforms the complex spatial three-dimensional curve measurement into the simultaneous measurement of laser interferometric length measurement and self-calibration rotary angle, originally realizes the shortest traceability chain for the fundamental quantities of length and angle. The calibration and measurement capability of the gear helix measurement primary standard has reached the international advanced level by verification of international comparison results. The helix values obtained from the standard have been widely used in domestic calibration institutions, universities, and gear manufacturing companies, providing strong technical support for the development of the gear industry.
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表 1 国外齿轮螺旋线校准和测量能力
Table 1. Foreign gear helix calibration and measurement capabilities
国家 测量范围 U(fHβ) (k=2) 德国 β:0°~45°
d:25~400 mm0.7~1.3 μm 美国 β:0°~45° 0.8~1.3 μm 英国 β:0°~45°
d:10~650 mm1.0 μm 日本 d:25~200 mm 1.3 μm 表 2 45°大角度螺旋线样板参数
Table 2. Parameters of 45 degree helix
螺旋角 β 45°左旋 45°右旋 模数 mn 4 mm 4 mm 齿数 z 18 18 压力角 αn 20° 20° 齿宽 b 100 mm 100 mm 表 3 齿轮螺旋线参量双边比对结果
Table 3. Bilateral comparison results of gear helix parameters
螺旋角 参量 DoE ( μm) U(DoE) ( μm) En 45°左旋 fHβ 0.88 1.77 0.50 ffβ −0.20 1.25 −0.16 Fβ −0.05 2.12 −0.02 45°右旋 fHβ −1.14 1.77 −0.64 ffβ 0.87 1.25 0.69 Fβ 0.89 2.12 0.42 表 4 NIM与PTB齿轮螺旋线CMC对比
Table 4. Comparison of gear helix CMC between NIM and PTB
计量机构 测量范围 U(fHβ)(k=2) NIM β:0°~60°
d:25~400 mm0.9~1.2 μm PTB β:0°~45°
d:25~400 mm0.7~1.3 μm -
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