作者投稿
专家审稿
编辑办公
Analysis of the Discrepancies Between the Contour Scanning and Double Ball Stylus Methods for Thread Pitch Diameter Measurement
-
摘要: 中径参数是评价螺纹质量的重要参数，螺纹中径的测量方法主要有双球法和轮廓扫描法。在APMP.L-S9 圆柱螺纹量规国际比对中，对牙侧直线度较差的量规，两种方法的测量结果出现了较大差异。通过分析两种方法的螺纹参数计算方法发现，轮廓扫描法在进行中径计算时，需要对牙侧扫描轮廓进行直线拟合，相对双球法测量的实际接触面，存在位置平移，导致中径线偏移。因此螺纹牙侧面的直线度较差时，会导致两种方法中径测量结果显著差异，通过建立理论分析模型并实验验证了上述结论。对于螺纹塞规，轮廓扫描法的测量结果小于双球法的测量值；对于螺纹环规，轮廓扫描法的测量结果大于双球法的测量值。两种方法的差值约为左右牙侧直线度之和。该分析方法也适用于轮廓扫描法与三针法的差异分析。Abstract: The pitch diameter serves as a crucial metric in assessing thread gauge quality. Measurement techniques for the thread pitch diameter predominantly employ a 1D-length measuring machine equipped with both a double-ball stylus and a contour scanner. During the APMP.L-S9-2019 cylindrical thread gauge international comparison, notable discrepancies were observed in the measurement outcomes of the two methods, especially for gauges with an inferior tooth profile. The contour scanning approach determines the pitch diameter by applying least-square fitting to the tooth profile, leading to a positional translation in comparison to the double-ball stylus method's actual contact surface. This causes the pitch diameter line to deviate. Consequently, when the straightness of the tooth profile is compromised, significant differences arise in the measurement results between the two methods. The findings have been corroborated through theoretical analysis coupled with experimental validation. For plug thread gauges, the contour scanning technique tends to yield measurements lower than the double-ball stylus method. Conversely, for ring thread gauges, the contour scanning's results surpass those of the double-ball stylus method. The differential between the two methods approximately equals the cumulative straightness of the tooth profile on both sides. The analytical methodology introduced herein is also relevant when comparing the three-wire and scanning methods.
-
表 1 M42 ×4.5 环规测量结果比较
Table 1. Comparison of M42 ×4.5 ring gauge measurement results using both methods
/mm M42×4.5测量数据 双球法 38.9865 扫描法 38.9937 两种方法实验差值 −0.0072 左牙侧直线度 0.0042 右牙侧直线度 0.0042 两种方法计算差值 −0.0084 
下载: 导出CSV
表 2 M80 ×4 环规测量结果比较
Table 2. Comparison of M80 ×4 ring gauge measurement results using both methods
/mm M80×4测量数据 双球法 77.4159 扫描法 77.4166 两种方法实验差值 −0.0007 左牙侧直线度 0.0004 右牙侧直线度 0.0006 两种方法计算差值 −0.0010
下载: 导出CSV
-
[1] Primozic Merkac T, Acko B. Comparising measuring methods of pitch diameter of thread gauges and analysis of influences on the measurement results[J]. Measurement, 2010, 43(3): 421-425. doi: 10.1016/j.measurement.2009.12.012 [2] National Physical Laboratory. NPL notes on screw gauges[R]. London: NPL, 2010. [3] 姜丽兰. 一种探针常数C(双球法测量内螺纹)标定方案的设计[J]. 计量与测试技术, 2021, 48(10): 25-27. doi: 10.15988/j.cnki.1004-6941.2021.10.008 [4] 贾晓杰. 双球法测量圆柱螺纹环规中径的测量不确定度评定[J]. 工业计量, 2014, 24(1): 43-44, 47. doi: 10.3969/j.issn.1002-1183.2014.01.015 [5] 孙永泰. 双球法测量内螺纹中径[J]. 机械工业标准化与质量, 2005(1): 39. doi: 10.3969/j.issn.1007-6905.2005.01.013 [6] Tong Q, Jiao C, Huang H. An automatic measuring method and system using laser triangulation scanning for the parameters of a screw thread[J]. Measurement Science and Technology, 2014, 25(3): 035202. doi: 10.1088/0957-0233/25/3/035202 [7] Lotze W, Will J. Principle, theory and software for a new method of screw thread measurement by optical coordinate measuring systems[J]. Measurement, 1991, 9(4): 153-156. doi: 10.1016/0263-2241(91)90010-N [8] Hong E, Zhang H, Katz R. Non-contact inspection of internal threads of machined parts[J]. Int. J. Adv. Manuf. Tech, 2012, 62: 221-229. doi: 10.1007/s00170-011-3793-5 [9] 林虎, 黄垚, 杨国梁, 等. 新一代齿轮螺旋线基准装置的研制[J]. 计量科学与技术, 2022, 66(4): 67-73. [10] 张瑾, 范路, 胥成亮, 等. 基于CCD成像的油管螺纹参数自动化检测技术[J]. 工具技术, 2023, 57(3): 134-139. doi: 10.3969/j.issn.1000-7008.2023.03.028 [11] 杨云涛, 关贞珍. 基于图像处理技术的螺纹几何参数测量[J]. 计量与测试技术, 2022, 49(1): 1-4. doi: 10.15988/j.cnki.1004-6941.2022.1.001 [12] 虞佳佳, 黄文广, 张耀. 基于机器视觉的冷油管螺纹中径自动检测系统[J]. 机电工程, 2022, 39(6): 833-838. doi: 10.3969/j.issn.1001-4551.2022.06.017 [13] Kosarevsky S, Latypov V. Detection of screw threads in computed tomography 3D density fields[J]. Measurement Science Review, 2013, 13(6): 292-297. doi: 10.2478/msr-2013-0043 [14] 位恒政, 王为农, 裴丽梅, 等. 面向任务的坐标测量机测量不确定度评价方法[J]. 计量科学与技术, 2021, 65(5): 115-119, 54. doi: 10.12338/j.issn.2096-9015.2020.9053 [15] 张犇, 孙兴伟, 王迎春. 基于激光测量的圆锥螺纹检测方法研究[J]. 重型机械, 2018(5): 11-13. doi: 10.3969/j.issn.1001-196X.2018.05.004 [16] 尤睿琦, 张超, 郝刚. 基于点云的高精度螺纹锥度测量方法[J]. 中国测试, 2022, 48(2): 34-40. [17] Sergey K, Viktor L. Development of an algorithm to detect screw threads in planar point clouds[J]. Measurement Science Review, 2013, 10(4): 22-24. [18] 倪高烽, 程维明. 基于接触式轮廓扫描的螺纹参数提取计算[J]. 农业装备与车辆程, 2021, 59(10): 46-51. [19] Schädel S, Wedmann A, Stein M. Advanced screw thread metrology using an areal measuring strategy and a holistic evaluation method[J]. Measurement Science and Technology, 2019, 30(7): 075009. doi: 10.1088/1361-6501/ab1501 [20] Przyklenk1 A, Schädel S, Stein M. Verification of a calibration method for 3D screw thread metrology[J]. Measurement Science and Technology, 2021, 32(9): 094005. doi: 10.1088/1361-6501/abead2 [21] Carmignato S, Chiffre L. D. A new method for thread calibration on coordinate measuring machines[J]. CIRP Annals, 2003, 52(1): 447-450. doi: 10.1016/S0007-8506(07)60622-2 [22] 刘远模. 统一螺纹un系列内螺纹小径光滑塞规的计算[J]. 计量技术, 2019(8): 56-60. [23] Galestin R. 2006 Advanced 2D scanning: the solution for the calibration of thread ring and thread plug gauges[EB/OL]. www. iac-instruments. com. [24] Galestien R . Measurement of geometric parameters of internal and external screw thread and similar grooves: AU20010032482[P]. [2023-08-07 [25] 张和君, 欧协锋, 马俊杰. 螺纹综合测量机的扫描原理与误差分析[J]. 计测技术, 2020, 40(3): 24-29. [26] 欧协锋. 螺纹机与测长机检测圆柱螺纹的分析比较[J]. 中国计量, 2018 (9): 98-101. doi: 10.16569/j.cnki.cn11-3720/t.2018.09.041 [27] 王荣峰, 曹迪, 文浩, 等. 螺纹量规扫描测量仪径向测量示值误差不确定度分析[J]. 机电工程技术, 2022, 51 (12): 314-317. doi: 10.3969/j.issn.1009-9492.2022.12.072 [28] 陈祥春. 轮廓仪测量螺纹中径结果的不确定度评估[J]. 计量与测试技术, 2023, 50(1): 115-118. doi: 10.15988/j.cnki.1004-6941.2023.1.033 [29] BIPM. Calibration of Parallel Thread Gauges APMP. L-S9[EB/OL]. [2023-07-31] .https://www.bipm.org/kcdb/comparison?id=1162. [30] EURAMET. Determination of pitch diameter of parallel thread gauges by mechanical probing: EURAMET cg-10[S]. Braunschweig: EURAMET, 2012. -
点击查看大图
图(8) / 表(2)
计量
- 文章访问数: 254
- HTML全文浏览量: 104
- PDF下载量: 41
- 被引次数: 0
