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Relevant bibliographies by topics / Straightness measurement

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Journal articles
Dissertations / Theses
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Academic literature on the topic 'Straightness measurement'

Author: Grafiati

Published: 28 June 2021

Last updated: 2 February 2022

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Journal articles on the topic "Straightness measurement"

1

Vekteris, Vladas, Mindaugas Jurevicius, and Vytautas Turla. "Optical device for straightness measurement." Applied Physics B 121, no. 2 (2015): 203–8. http://dx.doi.org/10.1007/s00340-015-6219-5.

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Pan, Xiao Bin, and Yang Pan. "Design of a Straightness Measurement Device for the Slider's Motion of the Press." Applied Mechanics and Materials 201-202 (October 2012): 686–91. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.686.

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A straightness measurement device for theqitade haishi FD slider’s motion of the press is presented. The design uses eddy current sensors, which will accomplish the measurement of straightness in un-contacted ways. MCU takes charge of data process. The straightness error can be calculated by the arithmetic of mean value. A straightness evaluation system is constructed as well. This device changes the traditional way of straightness measurement which is measured by the dial indicator. And it can improve the efficiency of straightness measuring task

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Liu, C. H., Y.-R. Jeng, W. Y. Jywe, S.-Y. Deng, and T.-H. Hsu. "Automatic straightness measurement of a linear guide using a real-time straightness self-compensating scanning stage." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 223, no. 9 (2009): 1171–79. http://dx.doi.org/10.1243/09544054jem1319.

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In this paper a method is developed for straightness measurement of a linear guide by using a straightness self-compensating stage with an optical straightness measuring system, an eddy current sensor, and a cross-roller type compensation stage. Both the compensation stage and the optical straightness system were set up on a scanning stage to measure the straightness error of the scanning stage. The measured straightness error was fed back to the control system to compensate directly in real time. Thus, straightness of a linear guide without the added straightness error of the scanning stage could be measured. The Hewlett Packard laser straightness calibration system was used to verify the real-time compensated results. Straightness error of the scanning stage was compensated from the worst straightness error of 20 μm/150 mm to 0.9 μm/150 mm. The eddy current sensor measured straightness of the linear guide and the measured result matched the result obtained by the coordinate measuring machine.

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Arai, Yoshikazu, Wei Gao, S. Kiyono, and Tsunemoto Kuriyagawa. "Measurement of the Straightness of a Leadscrew-Driven Precision Stage." Key Engineering Materials 295-296 (October 2005): 259–64. http://dx.doi.org/10.4028/www.scientific.net/kem.295-296.259.

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This paper describes a multi-probe method for measuring the straightness error of a leadscrew-driven stage. Two displacement probes are employed to scan a flat artifact mounted on the stage. The surface profile error of the flat artifact is separated from the straightness error of the stage in a differential output of the probes. The straightness error can thus be obtained accurately from an integration operation of the differential output without the influence of the surface profile error. An improved technique of data processing is adopted for measurement of straightness error components with periodicity shorter than the probe spacing. The influence of the angular error of the stage is compensated for by using the result measured by an autocollimator. Experiments of straightness measurement of a leadscrew-driven stage with a lead of 1 mm were carried out by using two flat artifacts with different degrees of precision. The successful detection of the short-periodicity component of the straightness error with a periodicity equal to the lead indicated the feasibility of the multi-probe method.

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KOMIYAMA, Takuya, Hiroshi SAWANO, Hayato YOSHIOKA, and Hidenori SHINNO. "B005 A Long-Range Straightness Measurement with Motion Error Compensation." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2013.7 (2013): 173–76. http://dx.doi.org/10.1299/jsmelem.2013.7.173.

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WADA, Hisashi, Hideo SAKUMA, and Koichi TABE. "Straightness measurement using heterodyne moire method." Journal of the Japan Society of Precision Engineering 51, no. 5 (1985): 984–89. http://dx.doi.org/10.2493/jjspe1933.51.984.

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Zhang, G. X., X. H. Chu, W. Tang, and Z. Z. Jin. "Distance-Distance Method for Straightness Measurement." CIRP Annals 41, no. 1 (1992): 581–84. http://dx.doi.org/10.1016/s0007-8506(07)61273-6.

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AI, Xiaoyong, Tsuyoshi SHIMIZU, and Makoto OBI. "Straightness Measurement Using Improved Reversal Method." Journal of the Japan Society for Precision Engineering 66, no. 10 (2000): 1578–82. http://dx.doi.org/10.2493/jjspe.66.1578.

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Okuyama, Eiki, Shingo Asano, Yuichi Suzuki, and Hiromi Ishikawa. "Generalized Two-Point Method for Straightness Profile Measurement - Error Propagation and Experimental Results." Advanced Materials Research 939 (May 2014): 600–606. http://dx.doi.org/10.4028/www.scientific.net/amr.939.600.

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In the straightness profile measurement of a mechanical workpiece, hardware datums have been the traditional standard. However, when the straightness profile is measured using a scanning displacement sensor set on an X-stage as the hardware datums, output of a displacement sensor includes the signal of straightness profile and the sensor’s parasitic motion, i.e. straightness error motion. Then, error separation techniques of the straightness profile from parasitic motions have been developed. For example, two-point method uses two displacement sensors and separates the sensor’s straightness error motion from the straightness profile. However, the conventional two-point method cannot measure a large-scale workpiece because the large sampling number causes random error amplification. In this article, the influence of the random error of generalized two-point method is shown. As the result of the theoretical analysis and numerical analysis, random error propagation decrease when sampling number increase. Further, experimental results obtained by generalized two-point method with large sampling number are analyzed using Wavelet transform and influence of error of the generalized two-point method is discussed in the space-spatial frequency domain.

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Osawa, Sonko, Osamu Sato, and Toshiyuki Takatsuji. "Multiple Measurement Techniques for Coordinate Metrology." Key Engineering Materials 381-382 (June 2008): 93–94. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.93.

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Reversal and multiple measurement techniques have been used in dimensional metrology [1]. The reversal technique in straightness measurement is very common method. The techniques are able to reduce the errors which come from a measuring instrument and compensate the errors automatically. The techniques are available to CMM measurements. For ball-plate calibration, the reversal technique is used in National Metrology Institutes (NMIs). The technique automatically eliminates the geometrical errors of a CMM, for example, straightness, perpendicular and angle (pitch, yaw and roll). The multiple measurement technique is used for measuring symmetrical features as cylinders [2]. We tried to apply the technique for the pitch measurement of a gear. In this paper, we describe the multiple measurement techniques for coordinate metrology, especially, application to gear measurement.

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Dissertations / Theses on the topic "Straightness measurement"

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Pavelescu, Alina, Victor Eriksson, Kevin Hammar, et al. "Tube straightness measurement : Independent Project in Chemical and Materials Engineering." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354750.

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Borisov, Oleg. "New optical sensing system applied to taut wire based straightness measurement." Thesis, University of Huddersfield, 2015. http://eprints.hud.ac.uk/id/eprint/24846/.

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In modern manufacturing industry, precision components are typically produced on Computer Numerical Controlled (CNC) machine tools which translate their accuracy onto machined parts. This accuracy is affected by a set of different motion errors caused by inherent imperfections in the design and build of the machine, variations in the local environment such as temperature, the cutting process itself and human factors. The reduction of these effects is achieved primarily through design improvements and error compensation techniques. The latter requires detailed knowledge about the existing errors in order to deal with them effectively. This thesis describes a novel sensor system for measurement of errors caused by deviation in the straightness of Cartesian axes present in the structural loop of most machine tools. Currently there are very few methods available to measure straightness directly, each having advantages and disadvantages when considering simplicity, accuracy and affordability. The proposed system uses a taut wire reference with a novel sensor, a two-point technique for reference error cancellation and software to enable fast and accurate measurement of straightness between any two points of the measured machine’s working volume. The standout features of the sensing system include ultra-low cost and high performance when compared with existing state-of-the-art systems. It is capable of measuring a straightness error as low as 3μm and takes only 2s of dwell time between readings, while laser interferometer requires 4s to perform averaging when measuring the same error. Existing taut wire microscopy is limited by 10-20μm of measured error depending on optics quality and manual reading takes at least 5s to minimise the human error. Setup time is also different – the new system saves 15 minutes time on 2m axis and more on longer lengths compared the laser due to simpler reference alignment procedure. Theoretical analysis and practical implementation are followed by detailed performance evaluation experiments carried out under typical manufacturing conditions comprising different machine tools, different axes, measured errors, environmental effects and alternative measuring equipment. Tests cover aspects of accuracy, repeatability and overall system stability providing a complete picture of the system’s capability and the method’s potential which is also supported by uncertainty analysis. In addition to defining setup and measuring procedures, a user-friendly software interface is described and its main units are explained with respect to overall measurement efficiency and setup fault detection.

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Zatočilová, Aneta. "Měření a vyhodnocování přímosti osy rotačních výkovků pomocí fotogrammetrie a analýzy obrazu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234252.

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The thesis deals with methodology proposal for shape and dimension measurement of rotationally symmetric forgings. Most of available non-contact systems are not possible to use for this purpose, mainly due to high temperatures and large dimensions of forgings. Only a few commercial systems which are designed for this specific measurement are currently in the market. These systems are based on a principle of evaluating time response of posted modulated signal. However, scientific literature shows also other approaches to the measurement, which are based on principle of triangulation and methods of image analysis. Advantage of systems based on these principles should be especially measurement speed and significantly lower price. The paper describes current state of research and development in this area and proposes a new approach which is based on passive photogrammetry and image analysis. The core of the work is devoted to the design of partial methods and their implementation in the Matlab programming language. Functionality of the methodology and the software has been verified by measuring cylindrical tubes of small dimensions in laboratory conditions. The designed methods were discussed and evaluated based on statistical analysis of the measurement results, and further steps to increase the accuracy and reduce the spread of results were suggested. Optimization and further development of this methodology could lead to the design a professional measuring system intended for this specific application.

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Belhadj, Ahmed Abdelwahed. "Contribution à l’amélioration de la rectitude dans l’obtention de produits longs : application aux abouts de rails." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0066/document.

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Les produits longs se distinguent par une dimension, généralement la longueur plus importante que la hauteur et la largeur, à titre d'exemple les rails de chemin de fer. Ces produits sont obtenus par déformation plastique à chaud puis refroidissement. Au cours du processus de fabrication, l'hétérogénéité du refroidissement et de la déformation plastique induisent un défaut géométrique de rectitude. Pour parachever la rectitude du produit, un redressage à froid est alors nécessaire. Souvent des dresseuses à galets sont utilisées pour corriger la rectitude du centre de produit, cependant, il reste les abouts. Ces derniers sont redressés au moyen d'une presse à partir de l'image de leurs profils obtenus par mesurage optique. La procédure de mesure/redressage est répétée jusqu'à la conformité du produit. Le temps de réalisation est variable, il dépend de l'apprentissage des paramètres clés liés à la géométrie et au matériau du produit à redresser. Compte tenu des exigences de plus en plus sévères sur la rectitude des produits longs d'une part et une volonté d'augmenter la productivité d'autre part, l'objet de ce travail de recherche consiste à optimiser le procédé de redressage des abouts de produits longs. Dans un premier temps, les déformations élastiques générées au cours du mesurage d'un produit long ont été filtrées. Ensuite, les erreurs des moyens de mesure ont été séparées de la mesure du produit au moyen d'une analyse couplée ce qui a permis une meilleure évaluation de la rectitude du produit. Par ailleurs, en se basant sur l'image du profil du produit, une méthodologie de redressage semi-automatique a été mise en place. Cette dernière est essentiellement basée sur une interaction entre la métrologie et la mécanique et représente une contribution à l'automatisation du procédé de redressage des abouts des produits longs<br>Long workpieces are characterized by one dimension, usually length is larger than the height and width, for example, railway rails. These products are obtained by hot rolling and then cooling. During manufacturing process, heterogeneity of cooling and plastic deformation induced straightness error. In order to correct this geometrical error, cold straightening process is necessary. Usually, straightening machines are used to correct the straightness of the workpiece center however; the ends' sides were still not straightened. Based on the optical measurement profile, these ends are straightened by mechanical press. The measuring/straightening closed loop is repeated until the straightness of the product is conformed. The process time depends on the knowledge of key parameters related to geometry and material of workpiece. The objective of this research work is to optimize straightening process of the ends of long workpieces. As a first step, the elastic deformation generated during the measurement of long workpiece has been filtered. Then, a coupled analysis of measurement was used to separate error of machine measurement from workpiece measurement, which allowed a better assessment of workpiece straightness profile. Furthermore, based on straightness profile, a semi-automatic straightening methodology has been developed. It is essentially based on an interaction between metrology and mechanics and it is a contribution to the automation of straightening process for ends parts of long workpieces

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Únar, Jan. "Posouzení geometrické přesnosti obráběcího centra pomocí digitálních inklinometrů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444307.

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This diploma thesis deals with assessment of geometric accuracy of machining center MCV 754 QUICK. BlueSYSTEM digital inclinometers from WYLER AG, XL-80 laser interferometer from RENISHAW, Ballbar QC20-W from RENISHAW and LaserTRACER self-guiding laser interferometer from ETALON AG were used to measure accuracy. Error of the X straightness in the direction of the Z axis was assessed. The first part of the paper describes the geometric accuracy of the machine, currently available instruments for measuring geometric accuracy and an explanation of straightness. The second part consists of the design of measurements, experiment, evaluation and comparison of results and recommendations for teaching.

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Paziani, Fabricio Tadeu. "Desenvolvimento de um sistema automatizado e dedicado de medição." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-21092015-102558/.

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Sistemas dedicados de medição são especialmente recomendados para a inspeção repetida de uma característica mecânica. Entretanto, instrumentos e sistemas de medição apresentam erros que deterioram o resultado da inspeção. Tal circunstância demanda a aplicação de técnicas de separação de erros que viabilizem o desacoplamento dos erros induzidos pelo sistema de medição daqueles apresentados pelas peças medidas. Este trabalho tem por objetivo apresentar um sistema automatizado e dedicado à medição de erros de retilineidade e circularidade em componentes mecânicos. Um robô industrial foi empregado para operar dispositivos de medição específicos para cada tipo de medida. Entretanto, robôs industriais apresentam erros de posicionamento relativamente grandes que impedem a utilização do sistema de coordenadas do equipamento como referência para medições precisas. Para minimizar o efeito dos erros do sistema de medição sobre o valor medido, foram aplicadas técnicas multi-sensoriais de separação de erros. Na medição do erro de retilineidade, uma nova abordagem foi desenvolvida para minimizar a influência do erro de posicionamento axial dos sensores, que constitui a maior fonte de erros no processo de desacoplamento. Foram realizadas simulações computacionais e testes experimentais aplicados à medição do erro de retilineidade e de circularidade de vários artefatos que comprovaram a efetividade da metodologia utilizada.<br>Dedicated measuring systems are particularly recommended for the repetitive inspection of a mechanical feature. However, measuring instruments and systems present errors that deteriorate the result of the inspection. Such a circumstance demands the application of error separation techniques that perform decoupling of errors induced by the measuring system from part errors. This work aims to present an automated measuring system that is dedicated to the task of inspecting straightness and roundness errors in mechanical components. An industrial robot was employed to operate specific measuring devices for each measurement. However, industrial robots present relatively large positioning errors that prevent the use of their coordinate system as a reference to accurate measurements. In order to minimize the effect of the measuring system on the measured value, multi-probe error separation techniques were employed. On the straightness measurement, a new approach was developed to minimize the influence of the axial positioning error of the sensors, which consist of the major error source on the decoupling process. Computational simulations and experimental straightness and roundness tests were accomplished for various artefacts, which confirmed the effectiveness of the employed methodology.

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Cai, Jhih-Sian, and 蔡志賢. "On-line Measurement for the Straightness and Angular Motions On the linear axis." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/hs725q.

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碩士<br>國立虎尾科技大學<br>光電與材料科技研究所<br>98<br>An integrated system for measuring optical path is designed and developed in this research. This system involves two straightness measuring modules adopting collimation invisible light LEDs with a 1D bi-cell detector to estimate the pitch and the yaw of a precision platform, and one angle measuring module with an optical pickup head and a 2D quadrant detector to probe the roll of the precision platform. The system is used directly to a translational platform and is shown to be easily-fabricated and quickly-measuring to support real-time operation through applying the elements to a mobile platform. The experimental Results can be examined by both of the straightness measuring system of HP laser interferometer and the angle measuring system of a Laser Autocollimator.

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Chen, Jhih-Sheng, and 陳志昇. "The Embedded System Design with Wireless Data Capture and Straightness Measurements Applied in the Precise Machine Tools Measurement." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/88j473.

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碩士<br>國立虎尾科技大學<br>資訊工程系碩士班<br>104<br>With the advance of science and technology, the inspection and error analysis methods of the mainframe platforms are more important than before. In particular, the correction method of assembly mainframe platform is limited by the traditional length and precision of the right angle specification. Normally, those electrical levels, laser interferometers and collimators are utilized to perform verification or inspection of straightness, squareness and parallelism. The most commonly laser collimator is applied in this study that is for verification or inspection of mainframe platform in industry. Additionally, the Quadrant Detector (QD) is utilized as the source of signal, and display the result of embedded system and signal analysis to Android mobile device. This system implements four parts. The first part is analog signal processing .It reads analog signal from QD, then translate and amplificate analog signal from output by OPA. It also uses ADC converter of SPI for translating the analog signal to digital signal. The second part is digital computing and analysis. This system uses K60 MCU (NXP Inc.). The K60 MCU has functionalities like SPI access, straightness measurement and analysis, SD card access, Wi-Fi module, LCD module and so on. This part also does Bootloader''s research for the convenience of updating firmware. The third part is a dongle based on PC. It uses K60 to control EZ-USB FX2 USB (Cypress Inc.), and communicates with PC program by USB. The Final part is UI for straightness testing. For various environments, this system provides android mobile app and PC app. In android mobile app, it reads packet from socket of TCP/IP. In PC app, it uses WinDriver to develop Windows and Linux USB driver for reading a alrge of data from PC dongle. By this research of precise machine tools measurement of wireless data capture and straightness measurements on intelligence embedded system, the system can provide industry an application of precise inspection in mainframe platform that can upgrade the skill of precise machine tools measurement and help the development of relative business. In the future, the inspection of squareness and parallelism will be combined this study.

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Book chapters on the topic "Straightness measurement"

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Yin, Zi Qiang, S. To, and Ling Bao Kong. "Novel Error Separation Method for Straightness Measurement." In Optics Design and Precision Manufacturing Technologies. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-458-8.572.

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Arai, Yoshikazu, Wei Gao, S. Kiyono, and Tsunemoto Kuriyagawa. "Measurement of the Straightness of a Leadscrew-Driven Precision Stage." In Key Engineering Materials. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-977-6.259.

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González, Rafael C., Raul Valdés, and Jose A. Cancelas. "Vision Based Measurement System to Quantify Straightness Defect in Steel Sheets." In Computer Analysis of Images and Patterns. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-44692-3_52.

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Gao, Wei, J. Yokoyama, S. Kiyono, and N. Hitomi. "A Scanning Multi-Probe Straightness Measurement System for Alignment of Linear Collider Accelerator." In Key Engineering Materials. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-977-6.253.

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"Scanning Error Separation System for Measurement of Straightness." In Springer Series in Advanced Manufacturing. Springer London, 2010. http://dx.doi.org/10.1007/978-1-84996-254-4_6.

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Shengyi, Li, and Liang Cheng. "The Optimum EST-A New Method for On-line Measurement of the Straightness of Precision Machine Tools and Machined Workpiece." In International Progress in Precision Engineering. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-7506-9484-1.50053-1.

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Conference papers on the topic "Straightness measurement"

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Wu, Xuhua, Lei Chen, and Jiaofen Sun. "Straightness error measurement of horizontal slideway." In 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, edited by Xun Hou, Jiahu Yuan, James C. Wyant, Hexin Wang, and Sen Han. SPIE, 2006. http://dx.doi.org/10.1117/12.676720.

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Tenjimbayashi, Koji, and Hiromitsu Furukawa. "Straightness measurement of a linear stage." In 19th Congress of the International Commission for Optics: Optics for the Quality of Life, edited by Giancarlo C. Righini and Anna Consortini. SPIE, 2003. http://dx.doi.org/10.1117/12.531102.

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Uchikoshi, Junichi, Shoichi Shimada, Naoya Ikawa, and Akio Komura. "Straightness measurement using laser beam straight datum." In International Conferences on Optical Fabrication and Testing and Applications of Optical Holography, edited by Toshio Kasai. SPIE, 1995. http://dx.doi.org/10.1117/12.215602.

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Liang, Jian C., Shengyi Li, and Shuzi Yang. "Problems and solution methods for on-line measuring straightness." In Measurement Technology and Intelligent Instruments, edited by Li Zhu. SPIE, 1993. http://dx.doi.org/10.1117/12.156358.

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He, Mingzhao, Xiaoyou Ye, Jianshuang Li, and Xiaochuan Gan. "Evaluation of Spatial Straightness Error using LaserTRACER." In International Symposium on Precision Engineering Measurement and Instrumentation 2012, edited by Jie Lin. SPIE, 2013. http://dx.doi.org/10.1117/12.2014642.

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Liu, Zhao, Chunchen Dong, Yun Pei, and Jianyi Kong. "Online Rail Straightness Measurement Based on Parallel Computing." In 3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015). Atlantis Press, 2015. http://dx.doi.org/10.2991/ic3me-15.2015.215.

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Weiming, Cheng, Zhang Weina, Song Wei, Liu Liang, and Sun Guiqing. "Straightness Measurement for Long-length Rails of Bridge Crane." In 2011 International Conference on Measuring Technology and Mechatronics Automation (ICMTMA). IEEE, 2011. http://dx.doi.org/10.1109/icmtma.2011.659.

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Liu, Weihua, Qibo Feng, and Cunxing Cui. "The application of fiber-coupled LED in straightness measurement." In International Conference on Optical Instruments and Technology 2015, edited by Jigui Zhu, Hwa-Yaw Tam, Kexin Xu, Hai Xiao, and Sen Han. SPIE, 2015. http://dx.doi.org/10.1117/12.2193410.

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Huang, Pei, Yan Li, and Haoyun Wei. "Straightness measurement system based on phase sensitive detection technique." In International Conference on Optical Instruments and Technology (OIT2013), edited by Hwa-Yaw Tam, Kexin Xu, Hai Xiao, Jigui Zhu, and Chun-Liu Zhao. SPIE, 2013. http://dx.doi.org/10.1117/12.2036576.

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Shi, Wang-Yuan, Chun-Hai Wang, and Qi-Chang Cheng. "On-line high precision intelligent measurement of straightness based on dense sampling." In Measurement Technology and Intelligent Instruments, edited by Li Zhu. SPIE, 1993. http://dx.doi.org/10.1117/12.156338.

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Reports on the topic "Straightness measurement"

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Bundy, Mark, Jim Garner, Mark L. Kregel, and Mark D. Kregel. A Barrel Straightness Measurement System for Medium Caliber. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada473697.

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