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Статті в журналах з теми "Surface precision"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Jiang, X. "Precision surface measurement." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1973 (2012): 4089–114. http://dx.doi.org/10.1098/rsta.2011.0217.

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Анотація:

Surface size, geometry and texture are some of the most influential subjects in the fields of precision and ultra-precision engineering, defining the functional interface through which emerging products operate. Next-generation products demand super-smooth surfaces, freeform geometries or even deterministically introduced microstructures to provide functional performance. Technological progress using these surfaces types is possible only if the associated manufacturing processes are rigorously controlled and the surfaces are measurable. Metrology for advanced surfaces is not established. The c

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2

CHENG, M. N., C. F. CHEUNG, W. B. LEE, and S. TO. "Optimization of Surface Finish in Ultra-precision Raster Milling(Ultra-precision machining)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.3 (2005): 1019–24. http://dx.doi.org/10.1299/jsmelem.2005.3.1019.

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3

Shiou, Fang-Jung, and Assefa Asmare Tsegaw. "Ultra Precision Surface Finishing Processes." International Journal of Automation Technology 13, no. 2 (2019): 174–84. http://dx.doi.org/10.20965/ijat.2019.p0174.

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Анотація:

Surfaces of different complex shapes are aspirated part of many scientific measuring devices, medical, astronomical, and other precision activity utilizations. Components at miniaturized level should meet required surface roughness for the intended applications. Surface finishing of freeform and miniaturized components are always difficult and need to look for a new way out. In this study, an attempt was made to improve surfaces roughness of selected, most frequently used, engineering materials using different innovative processes, which can be integrated with CNC machine centers. An advanced

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4

Shiou, Fang-Jung, and Toshiyuki Enomoto. "Special Issue on Precision Surface Finishing." International Journal of Automation Technology 13, no. 2 (2019): 173. http://dx.doi.org/10.20965/ijat.2019.p0173.

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Precision surface finishing plays an important role in product quality owing to its direct effects on product appearance. As a result, automated precision surface finishing processes (APSFPs) are key technologies for industrial products and molds for forming and shaping processes. APSFPs can be divided into three main categories, namely, mechanical processes, electrochemical processes, and high energy beam processes. The objective of this special issue is to collect the cutting-edge research works focused on APSFPs. This issue includes 11 papers on APSFPs covering the following topics: ===danr

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5

Altendorf, John M. "Precision surface mount assembly." Assembly Automation 6, no. 2 (1986): 63–65. http://dx.doi.org/10.1108/eb004686.

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6

OKUDA, Koichi, Shusaku NAKAGAWA, Naoki FUJIWARA, Yuichi UTSUMI, Nobuji SAKAI, and Tadashi HATTORI. "Surface Integrity of Thick Photo Resist Finished by Ultra-Precision Diamond Cutting(Ultra-precision machining)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.3 (2005): 1041–46. http://dx.doi.org/10.1299/jsmelem.2005.3.1041.

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7

Botnari, Vlad, and Sergiu Mazuru. "Influence of Processing Parameters on the Quality of the Superficial Layer after Processing Surfaces by Plastic Deformation." Applied Mechanics and Materials 657 (October 2014): 147–52. http://dx.doi.org/10.4028/www.scientific.net/amm.657.147.

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Анотація:

On the properties of exploitation of the parts, a major influence has the quality parameters of working surface. Under the term "quality superficial layer" it is understood the integrity of such indices as: geometric precision, undulation, form precision, work surface microgeometry, physical and mechanical properties of the superficial layer. In most cases, the influence of these indicators on the exploitation characteristics of the surfaces are examined separately, but of their reciprocal interaction is evident. Roughness and precision machining of the surfaces have a significant influence on

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8

Lou, Yonggou, and Hongbing Wu. "Effect of parameters on surface roughness during the ultra-precision polishing of titanium alloy." PLOS ONE 17, no. 8 (2022): e0272387. http://dx.doi.org/10.1371/journal.pone.0272387.

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Titanium alloys have great potential in ultra-precision situations due to the excellent properties, such as high corrosion resistance, high specific-strength and high biocompatibility. However, the application of titanium alloys in ultra-precision field is limited by the poor machinability. There are difficulties in obtaining the optical surface. In this study, the possibility for obtaining optically graded surfaces of titanium alloys by ultra-precision polishing was investigated. Before the ultra-precision polishing, ultra-precision turning with a single point diamond tool was used to get all

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9

KORDONSKI, William, Aric SHOREY, Marc TRICARD, and Tamotsu KUME. "High-Precision Jet Finishing for Optics(Surface and edge finishing)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.3 (2005): 1177–80. http://dx.doi.org/10.1299/jsmelem.2005.3.1177.

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10

Li, Huifen, C. F. Cheung, W. B. Lee, S. To, and X. Q. Jiang. "Characterisation of surface roughness for ultra-precision freeform surfaces." Journal of Physics: Conference Series 13 (January 1, 2005): 32–35. http://dx.doi.org/10.1088/1742-6596/13/1/008.

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11

Kohno, Tsuguo, Norimitsu Ozawa, Kozo Miyamoto, and Tohru Musha. "High precision optical surface sensor." Applied Optics 27, no. 1 (1988): 103. http://dx.doi.org/10.1364/ao.27.000103.

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12

Nakanishi, Yoshitaka, Toshiki Moriyama, Takashi Baba, and Yuta Nakashima. "Precision machining for surface texturing." Proceedings of Conference of Kyushu Branch 2017.70 (2017): 908. http://dx.doi.org/10.1299/jsmekyushu.2017.70.908.

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13

Tiziani, H. J. "High Precision Optical Surface Topometry." Berichte der Bunsengesellschaft für physikalische Chemie 97, no. 12 (1993): 1664–73. http://dx.doi.org/10.1002/bbpc.19930971225.

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14

Li, H. F., Chi Fai Cheung, Ling Bao Kong, Wing Bun Lee, and Sandy To. "A Study of Measurement Technology for Ultra-Precision Freeform Surfaces." Key Engineering Materials 339 (May 2007): 417–21. http://dx.doi.org/10.4028/www.scientific.net/kem.339.417.

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Анотація:

Ultra-precision freeform surfaces have become widely used in advanced optics manufacture. Although these surfaces can be fabricated by ultra-precision freeform machining technology with sub-micrometer form accuracy and surface finish in nanometer range, our current understanding on the evaluation of surface quality of these surfaces is still far from perfect. In this paper, a study of measurement technology for ultra-precision freeform surfaces is presented.

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15

Shortis, M. R., and G. H. G. Johnston. "Photogrammetry: An Available Surface Characterization Tool for Solar Concentrators, Part I: Measurements of Surfaces." Journal of Solar Energy Engineering 118, no. 3 (1996): 146–50. http://dx.doi.org/10.1115/1.2870886.

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Close range photogrammetry is a sensing technique that allows the three-dimensional coordinates of selected points on a surface of almost any dimension and orientation to be assessed. Surface characterisations of paraboloidal reflecting surfaces at the ANU using photogrammetry have indicated that three-dimensional coordinate precisions approaching 1:20,000 are readily achievable using this technique. This allows surface quality assessments to be made of large solar collecting devices with a precision that is difficult to achieve with other methods.

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16

Pang, Gui Bing, Xieeryazidan Adayi, Wen Ji Xu, Yan Ping Peng, and J. J. Zhou. "On the Technologies of Electrochemical Mechanical Finishing." Advanced Materials Research 126-128 (August 2010): 515–20. http://dx.doi.org/10.4028/www.scientific.net/amr.126-128.515.

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The service properties and lives of mechanical parts and components are closely related to their surface quality and precision, and many of the frictional surfaces are required to be finished thereby improving the surface quality and precision. In electrochemical mechanical finishing (ECMF) processes, the surfaces of metal parts are removed through the electrochemical anodic dissolution to obtain the desirable dimensions and surface finish. ECMF is characterized by the independence of the hardness of workpiece and little wear in tools. As a result, it has received more and more attention in th

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17

Konneh, Mohamed. "Precision Surface Grinding of Silicon Carbide." International Journal of Engineering Materials and Manufacture 1, no. 2 (2016): 51–58. http://dx.doi.org/10.26776/ijemm.01.02.2016.02.

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Silicon carbide (SiC) is well known for its excellent material properties, high durability, high wear resistance, light weight and extreme hardness. Among the engineering applications of this material, it is an excellent candidate for optic mirrors used in an Airbone Laser (ABL) device. However, the low fracture toughness and extreme brittleness characteristics of SiC are predominant factors for its poor machinability. This paper presents surface grinding of SiC using diamond cup wheels to assess the performance of diamond grits with respect to the roughness produced on the machined surfaces a

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18

Kobayashi, Akiyoshi, and Yoshinori Niwa. "255 Surface Generation Mechanism of Precision and Ultra precision Machining." Proceedings of Conference of Tokai Branch 2008.57 (2008): 137–38. http://dx.doi.org/10.1299/jsmetokai.2008.57.137.

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19

Kobayashi, Akiyoshi, and Yoshinori Niwa. "155 Surface Generation Mechanism of Precision and Ultra Precision Machining." Proceedings of Conference of Tokai Branch 2009.58 (2009): 39–40. http://dx.doi.org/10.1299/jsmetokai.2009.58.39.

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20

Kuai, Ji Cai, Dmitrii V. Ardashev, Jia Qi Zhang та Hua Li Zhang. "Manufacturing Technology of α-Fe Bonded Grinding Wheel Free Abrasive". Key Engineering Materials 780 (вересень 2018): 111–15. http://dx.doi.org/10.4028/www.scientific.net/kem.780.111.

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Анотація:

ELID ultra-precision grinding mirror surface can achieve nanometer precision. However, after the grinding wheel passivates the abrasive particles in electrolysis, it is easy to scratch the ultra-precision ELID grinding surface into the grinding process. In order to solve this problem, a non-abrasive grain α-Fe bonded grinding wheel is propose, which contains no abrasive particles. After electrolysis, oxide film is formed on the surface of the wheel. In ultra-precision ELID grinding, there is no abrasive particles involved, only the polishing effect of oxide film. There is no need to worry abou

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21

Wolf, Gert W. "Scale independent surface characterisation: Geography meets precision surface metrology." Precision Engineering 49 (July 2017): 456–80. http://dx.doi.org/10.1016/j.precisioneng.2016.12.005.

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22

Aris, N. F. M., and K. Cheng. "Characterization of the surface functionality on precision machined engineering surfaces." International Journal of Advanced Manufacturing Technology 38, no. 3-4 (2008): 402–9. http://dx.doi.org/10.1007/s00170-007-1340-1.

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23

Kong, Lingbao, Yingao Ma, Mingjun Ren, Min Xu, and Chifai Cheung. "Generation and characterization of ultra-precision compound freeform surfaces." Science Progress 103, no. 1 (2019): 003685041988011. http://dx.doi.org/10.1177/0036850419880112.

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Анотація:

Compound freeform surfaces are widely used in bionic and optical applications. The manufacturing and measurement of such surfaces are challenging due to the complex geometry with multi-scale features in a high precision level with sub-micrometer form accuracy and nanometer surface finish. This article presents a study of ultra-precision machining and characterization of compound freeform surfaces. A hybrid machining process by combining slow slide servo and fast tool servo is proposed to machine compound freeform surfaces. The machining process for this hybrid tool servo is explained, and tool

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24

Wang, Xuchu, Qingshun Bai, Siyu Gao, Liang Zhao, and Kai Cheng. "A Toolpath Planning Method for Optical Freeform Surface Ultra-Precision Turning Based on NURBS Surface Curvature." Machines 11, no. 11 (2023): 1017. http://dx.doi.org/10.3390/machines11111017.

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As the applications for freeform optical surfaces continue to grow, the need for high-precision machining methods is becoming more and more of a necessity. Different toolpath strategies for the ultra-high precision turning of freeform surfaces can have a significant impact on the quality of the machined surfaces. This paper presents a novel toolpath planning method for ultra-precision slow tool servo diamond turning based on the curvature of freeform surfaces. The method analyzes the differential geometric properties of freeform surfaces by reconstructing NURBS freeform surfaces. A mathematica

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25

Yue Peng, and Shugui Liu. "Precision Evaluation Method of Surface Reconstruction." INTERNATIONAL JOURNAL ON Advances in Information Sciences and Service Sciences 5, no. 4 (2013): 937–45. http://dx.doi.org/10.4156/aiss.vol5.issue4.113.

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26

Parker, T. E., and G. K. Montress. "Precision surface-acoustic-wave (SAW) oscillators." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 35, no. 3 (1988): 342–64. http://dx.doi.org/10.1109/58.20455.

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27

YOSHIHARA, Nobuhito, and Tsunemoto KURIYAGAWA. "2612 Precision Grinding of Aspherical Surface." Proceedings of the JSME annual meeting 2005.4 (2005): 61–62. http://dx.doi.org/10.1299/jsmemecjo.2005.4.0_61.

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28

Jenkins, C. H., and D. K. Marker. "Surface Precision of Inflatable Membrane Reflectors." Journal of Solar Energy Engineering 120, no. 4 (1998): 298–305. http://dx.doi.org/10.1115/1.2888134.

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Space-based inflatable technology is of current interest to NASA and DOD, and in particular to the Air Force and Phillips Laboratory. Potentially large gains in lowering launch costs, through reductions in structure mass and volume, are driving this activity. Diverse groups are researching and developing this technology for radio and radar antennae, optical telescopes, and solar power and propulsion applications. Regardless of the use, one common requirement for successful application is the accuracy of the inflated surface shape. The work reported here concerns the shape control of an inflate

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29

Hutchins, Jim, and Stephan Oppelaar. "Precision Surface Mining, the Next Steps." Procedia Engineering 138 (2016): 40–48. http://dx.doi.org/10.1016/j.proeng.2016.02.050.

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30

Graf von Bothmer, Hans-Christian, Kristian Ranestad, and Frank Sottile. "Linear Precision for Toric Surface Patches." Foundations of Computational Mathematics 10, no. 1 (2009): 37–66. http://dx.doi.org/10.1007/s10208-009-9052-6.

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31

MORI, Yuzo. "Ultra-precision Machining for Surface Science." Hyomen Kagaku 22, no. 3 (2001): 151. http://dx.doi.org/10.1380/jsssj.22.151.

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32

Stoddart, P. R., J. C. Crowhurst, A. G. Every, and J. D. Comins. "Measurement precision in surface Brillouin scattering." Journal of the Optical Society of America B 15, no. 9 (1998): 2481. http://dx.doi.org/10.1364/josab.15.002481.

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33

Li, Wen, Lin Song Yan, and De Yuan Zhang. "Ultrasonic Elliptical Vibration Turning Studty for Precision and Ultra-Precision Workpiece." Advanced Materials Research 189-193 (February 2011): 3–8. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3.

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Анотація:

Based on ultrasonic elliptical vibration cutting (UEVC) model, kinematical formulas of elliptical vibration cutting(EVC) is established, the paper presented relationship of vibration parameters effecting on surface roughness, machining accuracy and machining efficiency, revealed UEVC characteristics of high frequency and small amplitude are more conducive to improve surface roughness, advance EVC machining efficiency. Experiences of cutting the weak rigidity workpiece by the designed adjusting frequency elliptical transducer is proved that compared conventional turning, increasing vibration fr

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34

Kannel, J. W., and T. A. Dow. "Analysis of Traction Forces in a Precision Traction Drive." Journal of Tribology 108, no. 3 (1986): 403–9. http://dx.doi.org/10.1115/1.3261217.

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A theory for the shear stress between a rough elastic cylinder and a cylinder with a soft layer has been developed. The theory is based on a Fourier transform approach for the elasticity equations coupled with surface deflection equations for transient contacts. For thick layers (h > .001 in.) the shear stress on the surface approaches the shear of the layer alone. The elastic shear deflection (∼100 μin.) as a result of the tangential load is significant and increases if a surface layer such as a thin coating is added to one or both cylinders. The predicted interfacial shear stresses are co

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35

Wei, Zhi Qiang, and Feng Gao. "Magnetic Grinding Technology in Precision Machining of the Cam Surface." Applied Mechanics and Materials 727-728 (January 2015): 327–30. http://dx.doi.org/10.4028/www.scientific.net/amm.727-728.327.

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Many Magnetic Abrasive Finishing has good flexibility, adaptability, self-sharpening characteristics, in the international arena has attracted wide attention, and its research results have been finishing in the plane, the outer surface, the inner surface of a round face and forming occasions been applied, Based on the precision grinding of cylindrical cam surfaces to illustrate the application of magnetic grinding technology in precision machining of the cam surface.

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36

Zhang, SJ, S. To, and XX Rao. "Effects of cutting speed on phase changes in ultra-precision raster milling of Zn–Al alloy." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 1 (2016): 31–41. http://dx.doi.org/10.1177/0954406216675639.

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Анотація:

Ultra-precision raster milling induces external stress to cause phase changes of Zn–Al alloy at a thin surface layer, which further degrade surface integrity of high-precision components. This study focuses on discussing phase changes at the surfaces of the alloy after ultra-precision raster milling under the high cutting speeds of 680 m/min, 1120 m/min, and 1360 m/min. Along with the penetration depth at the machined surfaces, phase changes and surface hardening rapidly declined to vanish with crystal orientation shift back to its standard Bragg angle. As the cutting speeds increased, phase c

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37

Wu, Dong Xu, Guo Li, Bo Wang, Zheng Qiao, and Lei Lv. "Fabrication of Microstructured Surfaces by Five-Axis Ultra Precision Machine Tool." Key Engineering Materials 625 (August 2014): 187–91. http://dx.doi.org/10.4028/www.scientific.net/kem.625.187.

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In this paper, a five-axis ultra precision machine tool for fabrication of microstructured surfaces is presented. This machine consists of two rotary axes (C&B) and three linear axes (X&Y&Z). High precision aerostatic bearing and torque motor are adopted in C axis (main spindle) and B axis. X axis and Z axis use the hydrostatic guideway and are driven by linear motors. Y axis is driven by torque motor and precision ball screw. This machine is able to realize multiple processing methods, including ultra precision diamond turning, ultra precision milling, fly-cutting, fast tool servo

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38

Wang, Lei, Xudong Wang, Pengfei Wang, et al. "PCO: Precision-Controllable Offset Surfaces with Sharp Features." ACM Transactions on Graphics 43, no. 6 (2024): 1–16. http://dx.doi.org/10.1145/3687920.

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Surface offsetting is a crucial operation in digital geometry processing and computer-aided design, where an offset is defined as an iso-value surface of the distance field. A challenge emerges as even smooth surfaces can exhibit sharp features in their offsets due to the non-differentiable characteristics of the underlying distance field. Prevailing approaches to the offsetting problem involve approximating the distance field and then extracting the iso-surface. However, even with dual contouring (DC), there is a risk of degrading sharp feature points/lines due to the inaccurate discretizatio

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39

Xu, Hai Hua, Yu Zhang, Xiao Guang Xia, and Zi Wei Wang. "Aspherical Surface Contact Detection Error Analysis." Advanced Materials Research 690-693 (May 2013): 3213–17. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.3213.

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Анотація:

Aspheric detection technology has always been the key factor which affects the further enhance of aspheric precision manufacturing. Without high-precision detection methods and instruments to fit processing accuracy, aspherical precision machining and ultra-precision machining is difficult to achieve. A contact measurement of aspheric surface detection technology and its error analysis are mainly introduced in this paper, and testing equipment is the UK Taylor Hubson profilometer with instrument precision 0.2μm and measure the caliber 200mm.

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40

Pan, Wei Min, Yong Jian Yu, Wei Ma, and Yong Gang Liu. "CMM Inspect Path Planning for Precision Concave Revolved Surfaces." Applied Mechanics and Materials 44-47 (December 2010): 3869–73. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.3869.

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Анотація:

The revolved concave surfaces are widely applied to both optical equipments and aerodynamic domain. The revolved surface is measured by digitized measurement with the coordinate measuring machine (CMM) in this paper. A CMM inspecting path planning which is different from traditional measuring method for revolved surface is given. An automatic algorithm of digitization on a CNC coordinate measuring machine for an unknown revolved surface is present. At the same time, this method is proved effectiveness through a practical measuring example of an optical part. The Measuring process and the measu

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41

NIEMCZEWSKA-WÓJCIK, Magdalena. "COINCIDENCE OF THE TECHNOLOGY AND THE SURFACE TOPOGRAPHY OF SPHERICAL ELEMENTS OCCURING DURING MACHINING PROCESS OF HIGH PRECISION." Tribologia 270, no. 6 (2016): 83–94. http://dx.doi.org/10.5604/01.3001.0010.6909.

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Анотація:

The paper presents issues concerning the surface layer and the changes in surface topography with respect to spherical elements at the subsequent stages of manufacturing process. Special attention was paid to the forming of surface topography in precision machining processes (preliminary grinding, precision grinding, lapping with polishing). The subjects of research and analysis were spherical elements made of a biomaterial, i.e. titanium alloy (Ti-6.5Al-1.3Si-2Zr). The surfaces of the studied components shaped during the subsequent operations of abrasive machining processes were measured usin

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42

Yuan, Ju Long, Fei Yan Lou, Zhi Wei Wang, M. Chang, W. P. Du, and B. C. Tao. "Research on Ultra-Precision Process of STAVAX ESR." Materials Science Forum 471-472 (December 2004): 63–66. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.63.

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Анотація:

STAVAX ESR（S-136）is a type of high stainless steel, used in precision mould widely . It has fine anticorrosion, polishing-alike, wearable，good process capacity and quench stability. To obtain the smooth surface of STAVAX ESR, the material removal mechanism in the paper is discussed. The experiment is processed on the ultra-precision plane polishing machine (Nanopoli-100). The experiment processes are as follows. Rough lapping and Ultra-precision lapping: the material of lapping pads is cast iron. #1000Al203 (10wt%) abrasive powders are used in rough lapping. Finally, surface roughness is 62nm.

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43

KUME, Tamotsu, Marc TRICARD, Paul DUMAS, and Paul MURPHY. "Sub-aperture Approaches for Precision Polishing and Metrology(Surface and edge finishing)." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.3 (2005): 1217–22. http://dx.doi.org/10.1299/jsmelem.2005.3.1217.

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44

Pang, Qilong, Liangjie Kuang, Youlin Xu, and Xiang Dai. "Study on the extraction and reconstruction of arbitrary frequency topography from precision machined surfaces." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 233, no. 7 (2018): 1772–80. http://dx.doi.org/10.1177/0954405418802307.

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Анотація:

This article presents an extraction and reconstruction method for arbitrary two-dimensional and three-dimensional frequency features in precision machined surfaces. A combination of power spectrum density and continuous wavelet transform is used to analyze the potassium dihydrogen phosphate crystal surface topography. All frequencies involved in sampling area of measuring instrument are distinguished by power spectrum density method. Compared to discrete wavelet transform used to decompose frequency features, continuous wavelet transform method can extract and reconstruct two-dimensional profi

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Ren, Ming Jun, Chi Fai Cheung, and Ling Bao Kong. "A Study of Fiducial Aided Precision Positioning of Ultra-Precision Freeform Surfaces." Key Engineering Materials 679 (February 2016): 167–71. http://dx.doi.org/10.4028/www.scientific.net/kem.679.167.

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Анотація:

The fabrication of ultra-precision freeform surfaces possessing non-rotationally symmetric geometry and sub-micrometre form accuracy requires an efficient positioning method for precisely locating the position of the workpiece on the machine with high repeatability during the manufacturing cycle. This paper presents an initial attempt to develop a fiducial aided positioning (FAP) method for precisely locating the freeform workpiece on multi-axis machine tools in order to improve the accuracy and efficiency in the manufacturing of ultra-precision freeform surfaces. The FAP method makes use of f

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46

Ji, Shi Jun, Hui Juan Yu, Ji Zhao, Lei Zhang, and Deng Peng Huang. "Theoretical Analysis about Off-Axis Parabolic Surface Machining under Two Different Accurate Spiral Tool Paths." Key Engineering Materials 625 (August 2014): 267–73. http://dx.doi.org/10.4028/www.scientific.net/kem.625.267.

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Off-axis aspheric surface is an indispensable optical device for the high precision measurement and manufacturing equipment, and the tool path generation is a very important factor for the manufacturing to obtain the surface with high precision form and nanometric surface finish. In this paper, the systemic description of tool path generation method about the off-axis parabolic surface with ultra-precision single point diamond turning is processed. Two effective methods of generating the accurate spiral tool path are proposed and compared. The proposed methods are mainly based on mathematical

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Durakbasa, M. Numan, P. H. Osanna, M. E. Yurci, and A. Nomak-Akdogan. "High Precision Measurement and Evaluation of the Fine Mould Surface Structures." Key Engineering Materials 381-382 (June 2008): 221–24. http://dx.doi.org/10.4028/www.scientific.net/kem.381-382.221.

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Анотація:

Surface structure is a suitability state that must be pursued closely workpiece components which work under severe conditions. It is a fact that high-precision forming component’s surface roughness affects the product’s nature that is being formed. In this scientific perspective, measurement and evaluation of the surface roughness and surface texture diversities during manufacturing and the effects of these diversities on material performance and product suitability has a significant importance. The first objective of the present project is to define surface modification treatments and the sur

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Kong, Ling Bao, Chi Fai Cheung, Suet To, and Wing Bun Lee. "Development of a Dynamic Model for Ultra-Precision Raster Milling." Key Engineering Materials 364-366 (December 2007): 58–63. http://dx.doi.org/10.4028/www.scientific.net/kem.364-366.58.

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Анотація:

Optical freeform surface requires submicrometer form accuracy and nanometer surface finish. Ultra-precision raster milling is an emerging technology in the fabrication of those surfaces in which the dynamics factors are vital to achieve the surface quality. This paper presents a theoretical dynamics model for ultra-precision raster milling. The cutting force is derived in the depth of cut (DOC) planes in the feed and raster directions. Hence, a 3D cutting force model is established. The cutting force induced deflection between tool and workpiece is determined which can be employed to analyze t

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Zhu, Xueliang, Fengming Nie, Bingcai Liu, Ruikun Liu, and Ailing Tian. "Multiposition Rotation Interference Absolute Measurement Method for High-Precision Optical Component Surfaces." International Journal of Optics 2021 (September 14, 2021): 1–8. http://dx.doi.org/10.1155/2021/6621939.

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Анотація:

Modern optical engineering requires increasingly sophisticated interferometry methods capable of conducting subnanometer scale measurements of the large aperture, high-precision optical component surfaces. However, the accuracy of interferometry measurement is limited to the accuracy with which the surface of the reference mirror employed in the interferometer system is known, and the influence of gravity-induced deformation cannot be ignored. This is addressed in the present work by proposing a three-flat testing method based on multiposition rotation interference absolute surface measurement

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A. Saleem, Hussein. "Assessing the precision of gridding techniques for creating surfaces and calculating volumes through different hypothetical terrains." Cadernos de Educação Tecnologia e Sociedade 17, se3 (2024): 231–54. https://doi.org/10.14571/brajets.v17.nse3.231-254.

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The objective of this study is to assess the precision of various gridding methods and numerical integration approaches in accurately representing surfaces and calculating volumes between two surfaces. Three hypothetical surface categories were generated and volumes were computed using analytical integration in Python. These surfaces served as benchmarks for comparison with other surface forms and computed volumes. Various gridding methods available in Surfer software were compared, and the computed volumes were compared to those obtained from Python analytical integration. Statistical metrics

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