基于激光测距原理的锻件倾斜度测量

doi:10.3969/j.issn.1000-1158.2022.08.05

Abstract
Figure/Table
References (17)
Related Citation (15)

Download: PDF (3089 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract A measurement method based on laser ranging principle was proposed to detect inclination of forgings.Firstly, laser displacement sensors were used to collect forging surface information, and an outlier detection method based on regression analysis was adopted to judge and to eliminate outliers.Then, the obtained distance information was converted into coordinate information by coordinate transformation method, and the direct least square method was used to fit discrete points for obtaining elliptic curve.Finally, the three-dimensional linear equation of central axis of forging was obtained by fitting multiple elliptical center points in the vertical direction, and inclination angle of forging was calculated by linear equation.According to experimental results, the measurement errors are less than 0.1°.

Key words： metrology inclination laser ranging;forging upsetting and piercing outlier detection

Received: 18 February 2021 Published: 20 August 2022

PACS:

TB922

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Yong-da
	ZHANG Yun-gang
	HU Rui
	NI Nan
	Li Lin-ying

Cite this article:

WANG Yong-da,ZHANG Yun-gang,HU Rui, et al. An Inclination Measurement of Forgings Based on Laser Ranging Principle[J]. Acta Metrologica Sinica, 2022, 43(8): 1001-1007.

URL:

http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.08.05 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I8/1001

［1］Liu Y, Jia Z, Liu W, et al. An improved image acquisition method for measuring hot forgings using machine vision ［J］. Sensors and Actuators A: Physical, 2016, 238: 369-378.
［2］王连东, 李士华, 刘助柏. 镦粗工艺理论与技术的研究进展［J］. 中国机械工程, 2001, 12 (4): 474-477.
Wang L D, Li S H, Liu Z B. Research on the theory and technique of upsetting technology［J］. China Mechanical Engineering, 2001, 12 (4): 474-477.
［3］Hawryluk M, Ziemba J, Sadowski P. A review of current and new measurement techniques used in hot die forging processes［J］. Measurement and Control, 2017, 50 (3): 74-86.
［4］耿欣, 张福民. 计算机图像技术在高温锻件尺寸测量中的应用［J］. 计量学报, 2014, 35 (1): 13-17.
Geng X, Zhang F M. Application of computer image technology on size measurement of high temperature forging workpiece ［J］. Acta Metrologica Sinica, 2014, 35 (1): 13-17.
［5］Bracˇun D, kuIj G, Kadi M. Spectral selective and difference imaging laser triangulation measurement system for on line measurement of large hot workpieces in precision open die forging ［J］. International Journal of Advanced Manufacturing Technology, 2017, 90:917-926.
［6］王颖, 张玉存. 基于绿激光图像识别的热态大型锻件长度尺寸测量［J］. 计量学报, 2018, 39 (3): 30-34.
Wang Y, Zhang Y C. The length dimension measurement for large hot forgings based on the recognition of green laser ［J］. Acta Metrologica Sinica, 2018, 39 (3): 30-34.
［7］Zhang Y C, Han J X, Fu X B, et al. Measurement and control technology of the size for large hot forgings ［J］. Measurement, 2014, 49: 52-59.
［8］Zhang Y C, Han J X, Fu X B, et al. An online measurement method based on line laser scanning for large forgings ［J］. Int J Adv Manuf Technol, 2017, 70: 439-448.
［9］Song L M, Sun S Y, Yang Y G, et al. A multi-view stereo measurement system based on a laser scanner for fine workpieces ［J］. Sensors, 2019, 19 (2): 381.
［10］Du Z C, Wu Z Y, Yang J G, et al. 3D measuring and segmentation method for hot heavy forging ［J］. Measurement, 2016,85: 43-53.
［11］王高文, 曲兴华, 邢书剑,等. 大直径内孔自动测量机构倾斜度测量研究［J］. 仪器仪表学报, 2011, 32 (1): 63-68.
Wang G W, Qu X H, Xing S J, et al. Research on inclination measurement in large size pipe for automatic measuring machine ［J］. Chinese Journal of Scientific Instrument. 2011, 32 (1): 63-68.
［12］陈伟, 郝华东, 李东升, 等. 激光扫描立式罐倾斜测量新方法研究［J］. 中国测试, 2015, 41 (2): 22-26.
Chen W, Hao H D, Li D S, et al. Study on new tilt measuring method for vertical tanks based on laser scanning ［J］. China measurement and Test, 2015, 41 (2): 22-26.
［13］Zhang Y G, Wang Y D, Liu Y J, et al. A concentricity measurement method for large forgings based on laser ranging principle［J］. Measurement, 2019, 147:106838.
［14］许辉熙, 薛万蓉, 程熙. 一种拟合三维空间直线的新方法［J］. 测绘通报, 2015 (9): 28-31.
Xu H X, Xue W R, Cheng X. A new fitting method of three-dimensional spatial straight lines ［J］. Bulletin of Surveying and Mapping, 2015 (9): 28-31.
［15］谢张宁, 姜志华, 朱惠臣,等. 基于三维点云螺纹中轴线的拟合方法研究［J］. 计量学报, 2020, 41 (8): 918-925.
Xie Z N, Jiang Z H, Zhu H C, et al. Research on fitting method of three middle axis based on 3d point cloud［J］. Acta Metrologica Sinica, 2020, 41 (8): 918-925.
［16］Rosin P L. Ellipse fitting by accumulating five-point fits［J］. Pattern Recognition Letters, 1993, 14 (8): 661-669.
［17］Pilu M, Fitzgibbon A. Fisher R B. Direct least squares fitting of ellipses［C］//IEEE Transactions on Pattern Analysis and Machine Intelligence. Vienna, Austria,1996, 253-257.