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Articoli di riviste sul tema "Grinding"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 8 giugno 2024

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1

Choi, Young Jae, Kyung Hee Park, Yun Hyuck Hong, Kyeong Tae Kim, Seok Woo Lee e Hon Jong Choi. "Design of Ultrasonic Horn for Grinding Using Finite Element Method". Advanced Materials Research 565 (settembre 2012): 135–41. http://dx.doi.org/10.4028/www.scientific.net/amr.565.135.

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In this paper, a ultrasonic horn, which can vibrate longitudinally with a frequency of 20㎑, was designed using finite element method (FEM). And the ultrasonic horn was fabricated for ultrasonic assisted grinding. To evaluate machining performance of the fabricated ultrasonic horn, grinding test was conducted on alumina ceramic (Al2O3). In the grinding test, grinding forces was measured and compared between the conventional grinding and the ultrasonic assisted grinding. The results showed that the grinding force in the ultrasonic grinding was lowered than the conventional grindign by 3~20%.

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2

Xue, Jin Xue, Bo Zhao e Guo Fu Gao. "Study on the Plastic Removal Mechanism of Nano-ZrO₂ Ceramics by Ultrasonic Grinding". Key Engineering Materials 455 (dicembre 2010): 686–89. http://dx.doi.org/10.4028/www.scientific.net/kem.455.686.

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The brittleness, plasticity, super-plasticity and the removal mechanisms of critical fragmentation of the nano ZrO2 ceramics were investigated. The formula of critical ductile grinding depth of the common engineering ceramics was inapplicable to the nano-ZrO2 ceramics. A new formula of critical ductile grinding depth of the nano ceramics was established. The ultrasonic vibration grinding experiments showed that the critical ductile grinding depth of the ceramics was 15μm by conventional grinding, but the increment of the critical ductile grinding depth was 60 percent by ultrasonic grinding. The critical ductile grinding depth increased to 25μm. Analyzed by means of SEM, it was transgranular cracking during its cracking process. The nano-ZrO2 ceramics have high toughness so the critical ductile grinding depth increased. The shape, length, width and thickness of the grindings differed greatly from which obtained by conventional grinding.

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3

Ke, Xiao Long, Yin Biao Guo e Chun Jin Wang. "Compensation and Experiment Research of Machining Error for Optical Aspheric Precision Grinding". Advanced Materials Research 797 (settembre 2013): 103–7. http://dx.doi.org/10.4028/www.scientific.net/amr.797.103.

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According to the demand of precision machining for optical aspheric lens, especially large scale optical aspheric lens, this paper presents an error compensation technique for precision grindging. Based on precision surface grinding machine (MGK7160), grating-type parallel grinding method is put forward to realize grinding paths planning for optical aspheric lens. In order to obtain surface metrology and evaluation after grinding, an on-machine measurement system is built. On the basis of compensation principle, machining error is separated to achieve error compensation. Grinding experiments are carried out and show that it can meet the demand of precision grinding, and the accuacy after error compensation attains 6.5μm.

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4

Koltunov, I. I. "COMPARATIVE EVALUATION OF THE ERROR IN GRINDING OF BEARING RINGS". Izvestiya MGTU MAMI 6, n. 1 (10 gennaio 2012): 218–23. http://dx.doi.org/10.17816/2074-0530-70005.

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The article considers the method of selecting of grinding mode at the operation design stage. The authors developed the mathematical model of process of grinding of a bearing ring. There are obtained numerical values of the error of machining of internal surfaces of bearing rings for different schemes grindings.

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5

Rowe, Brian, Andrew Thomas, Jim Moruzzi e David Allanson. "Grinding: Intelligent CNC grinding". Manufacturing Engineer 72, n. 5 (1993): 238. http://dx.doi.org/10.1049/me:19930105.

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6

Shen, Xiao Long, Cheng Gao Ren, Zhi Mou Pi e Dai Li Zhu. "Experimental Investigation and Improvement of Dynamic Performance of High-Speed Grinding Machine". Advanced Materials Research 156-157 (ottobre 2010): 1609–12. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1609.

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Design of the dynamic performance of a machine tool is an effective approach to improve the machining accuracy. In this paper, the dynamic performance of high-speed cylindrical grinder has been studied systematically to improve the surface quality of high-speed grinding. According to the mode shape graphs and the power spectra, the vibration weak links and the main vibration sources of the prototype were found, and then the improvement measures were presented by designing the dynamic performance tests. The fact that the chatter of high-speed grinding can be suppressed to a certain extent with variable speed grindings was verified in variable speed grinding experiments at high speed.

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7

prasad, P. Durga, e B. Vivek. "Cryogenic Grinding". International Journal of Research Publication and Reviews 5, n. 3 (9 marzo 2024): 4137–40. http://dx.doi.org/10.55248/gengpi.5.0324.0795.

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8

IZAWA, Masaki. "Grinding Process Monitoring Based on Grinding Wheel Rotational Speed". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.3 (2005): 945–50. http://dx.doi.org/10.1299/jsmelem.2005.3.945.

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9

YOSHIHARA, Nobuhito, Kyohei HOROYA, Naohiro NISHIKAWA, Masahiro MIZUNO e Toshirou IYAMA. "D015 Grinding characteristics of high-speed reciprocation profile grinding". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2013.7 (2013): 519–22. http://dx.doi.org/10.1299/jsmelem.2013.7.519.

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10

Meng, Minghui, Chuande Zhou, Zhongliang Lv, Lingbo Zheng, Wei Feng, Ting Wu e Xuewei Zhang. "Research on a Method of Robot Grinding Force Tracking and Compensation Based on Deep Genetic Algorithm". Machines 11, n. 12 (8 dicembre 2023): 1075. http://dx.doi.org/10.3390/machines11121075.

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In the grinding process of complex-shaped cast workpieces, discrepancies between the workpiece’s contours and their corresponding three-dimensional models frequently lead to deviations in the machining trajectory, resulting in instances of under-grinding or over-grinding. Addressing this challenge, this study introduces an advanced robotic grinding force automatic tracking technique, leveraging a combination of deep neural networks and genetic algorithms. Harnessing the capability of force sensing, our method dynamically recalibrates the grinding path, epitomizing truly flexible grinding. Initially, in line with the prerequisites for force and pose tracking, an impedance control strategy was developed, integrating pose deviations with force dynamics. Subsequently, to enhance steady-state force tracking, we employed a genetic algorithm to compensate for force discrepancies caused by positional errors. This was built upon the foundational concepts of the three-dimensional model, impedance control, and environmental parameter estimation, leading to an optimized grinding trajectory. Following tracking tests, it was observed that the grinding’s normal force was consistently controlled within the bracket of 20 ± 2.5 N. To further substantiate our methodology, a specialized experimental platform was established for grinding complex-shaped castings. Optimized strategies were employed under anticipated forces of 5 N, 10 N, and 15 N for the grinding tests. The results indicated that the contact forces during the grinding process remained stable at 5 ± 1 N, 10 ± 1.5 N, and 15 ± 2 N. When juxtaposed with conventional teaching grinding methods, our approach manifested a reduction in grinding forces by 71.4%, 70%, and 75%, respectively. Post-grinding, the workpieces presented a pronounced enhancement in surface texture, exhibiting a marked increase in surface uniformity. Surface roughness metrics, originally recorded at 17.5 μm, 17.1 μm, and 18.7 μm, saw significant reductions to 1.5 μm, 1.6 μm, and 1.4 μm, respectively, indicating reductions by 76%, 73%, and 78%. Such outcomes not only meet the surface finishing standards for complex-shaped castings but also offer an efficacious strategy for robot-assisted flexible grinding.

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11

Denkena, B., T. Grove e T. Göttsching. "Grinding with patterned grinding wheels". CIRP Journal of Manufacturing Science and Technology 8 (gennaio 2015): 12–21. http://dx.doi.org/10.1016/j.cirpj.2014.10.005.

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12

Ohmori, H., Y. Uehara, W. Lin, Y. Watanabe, K. Katahira, T. Naruse, N. Mitsuishi e S. Ishikawa. "New ELID Grinding Technique for Desk-top Grinding System Based on VCAD Concept(Nanoprecision Elid-grinding (continued))". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 703–8. http://dx.doi.org/10.1299/jsmelem.2005.2.703.

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13

Suzuki, T., S. Morita, W. Lin, Y. Watanabe, Y. Uehara, H. Ohmori e A. Makinouchi. "Ultraprecision ELID grinding for Micro Lens Mold(Nanoprecision Elid grinding)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.1 (2005): 243–46. http://dx.doi.org/10.1299/jsmelem.2005.1.243.

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14

SHIBUTANI, Hideo, Jun-ichi IKENO, Osamu HORIUCHI e Hirofumi SUZUKI. "Mirror Grinding of Quartz-Crystal with EPD Pellet(Grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 659–62. http://dx.doi.org/10.1299/jsmelem.2005.2.659.

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15

HARA, Shigeo, e Toshio SAITOU. "Influence of Grinding Fluids on Grinding Cracks. Study on Grinding Cracks in Creep Feed Grinding." Journal of the Japan Society for Precision Engineering 59, n. 2 (1993): 252–56. http://dx.doi.org/10.2493/jjspe.59.252.

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16

Jafarpour, Vahid, e Rasoul Moharrami. "Numerical Stress Analysis of Creep-Feed Grinding Through Finite Element Method in Inconel Alloy X-750". Mapta Journal of Mechanical and Industrial Engineering (MJMIE) 6, n. 01 (23 marzo 2022): 1–9. http://dx.doi.org/10.33544/mjmie.v6i01.187.

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The present study developed a 2D finite element model for simulation of creep-feed grinding process. Fully-coupled mechanical-thermal analysis was used to predict the residual stresses distribution. As in the creep-feed grinding the thermal damages are considerable, so the best and worst cooling condition i.e. flood and dry grindings were studied. Convection heat transfer coefficient was utilized to shows the effect of coolant. The results show the maximum temperature of specimen has reduced by about 52% compared to non-use of coolant. The dominate residual stresses are tensile near the surface that a steep decline in stresses was observed in flood grinding. Also, by using the electro polishing layer removal technique the non-uniform residual stresses were measured to validate the model. The results demonstrated the presented model provides good congruency with the experiments

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17

INASAKI, Ichiro. "Grinding". Journal of the Japan Society for Precision Engineering 75, n. 1 (2009): 72–73. http://dx.doi.org/10.2493/jjspe.75.72.

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18

Hu, Huiqing. "Grinding of double disc grinding machine". Chinese Journal of Mechanical Engineering (English Edition) 18, n. 01 (2005): 1. http://dx.doi.org/10.3901/cjme.2005.01.001.

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19

Li, Wei, Bin Hu e Ming Ming Ma. "Grinding Performance of Permeated Grinding Wheel". Advanced Materials Research 189-193 (febbraio 2011): 121–24. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.121.

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The permeated grinding wheel was a new kind of grinding wheel, which was permeated by the chemical additives and solid lubricant into the interior gaps of the grinding wheel. Therefore, the grinding wheel can form a lubrication film on the surface of the grinding wheel. This grinding wheel has some good features, such as lower grinding temperature, smaller grinding force, higher life of the grinding wheel, and can prevent the adhesion of chip onto the grinding wheel surface. The experimental results indicate that the ground surface quality and grinding efficiency have been remarkably improved for more hard-to-cut materials.

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20

Mabuchi, Yusuke, Fumihiro Itoigawa, Takashi Nakamura, Keiich Kawata e Tetsuro Suganuma. "High Precision Turning of Hardened Steel by Use of PcBN Insert Sharpened with Short Pulse Laser". Key Engineering Materials 656-657 (luglio 2015): 277–82. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.277.

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Precision grinding is one of the important processes for finishing of hardened steel parts. However, the grinding process might be quite costly providing the parts with shape complexity should be finished because a number of production steps are needed. Also, this process has some environmental issues, such as disposal of a large amount of grinding sludge and grinding fluid. Precision cutting would become a better alternative process to reduce cost and environmental burden because process steps can be simplified by use of CNC machine tools with PcBN cutting insert if deterioration of cutting tool edge by wear and chipping can be suppressed for long duration. In this study, to improve performance of a PcBN cutting insert, such as wear resistance and defect resistance by the applying of pulse laser processing to sharpen cutting edge in order to realize substitution of cutting for grinding. Precision cutting experiments for hardened steel are conducted by use of the PcBN insert with sharp and tough edges processed by pulsed laser and, for comparison, by use of the PcBN insert ground with diamond wheel. From the results of cutting experiments, it was found that precision cutting with PcBN insert processed by pulsed laser can provide a steady cutting state for a long cutting duration, and a smooth finished surface comparable to precision grindings.

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21

GUO, Jianqiang, Hitoshi OHMORI, Shinya MORITA, Yutaka WATANABE, Weimin LIN, Toru SUZUKI, Yoshihiro UEHARA, Kazuaki IKEDA e Hirohiko M. SHIMIZU. "ELID Grinding of a Symmetric Paraboloidal Quartz Mirror(Nanoprecision Elid grinding)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.1 (2005): 253–56. http://dx.doi.org/10.1299/jsmelem.2005.1.253.

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22

Zhang, L. C., T. Nguyen e I. Zarudi. "A New Grinding-Hardening Technology Using an Inert Cryogen(Grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 647–52. http://dx.doi.org/10.1299/jsmelem.2005.2.647.

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23

FUJIMOTO, Masakazu, Yoshio ICHIDA, Ryunosuke SATO e Yoshitaka MORIMOTO. "Characterization of Wheel Surface Topography in CBN Grinding(CBN grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 685–90. http://dx.doi.org/10.1299/jsmelem.2005.2.685.

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24

LIANG, Z., Y. WU, X. WANG, W. Zhao, T. SATO e W. LIN. "E11 Two-dimensional Ultrasonically Assisted Grinding of Monocrystal Silicon(Grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 535–40. http://dx.doi.org/10.1299/jsmelem.2009.5.535.

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25

ASHIZUKA, M., H. S. LIM, A. S. KUMAR, M. RAHMAN e M. I. KHAN. "In-Process Truing of Metal-Bonded Grinding Wheels by Pulse Width Control in ELID Grinding(Nanoprecision Elid-grinding (continued))". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 709–14. http://dx.doi.org/10.1299/jsmelem.2005.2.709.

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26

SHIRAI, Toya, Takahiro SHIMIZU, Katsuhumi INAZAWA, Hitoshi OHMORI e Nobuhide ITOH. "ELID Grinding of Sapphire using High Strength Iron Bond Grinding Wheel ～Grinding characteristics using straight grinding wheel～". Proceedings of Ibaraki District Conference 2020.28 (2020): 707. http://dx.doi.org/10.1299/jsmeibaraki.2020.28.707.

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27

TAMURA, Hisashi, e Hiroshi GUNBARA. "Profile of Grinding Wheel for Involute Hob Frank Grinding (Profile of Grinding Wheel for Ideal-Frank Grinding)". Transactions of the Japan Society of Mechanical Engineers Series C 71, n. 707 (2005): 2407–13. http://dx.doi.org/10.1299/kikaic.71.2407.

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28

Choi, Woo Sik. "Grinding rate improvement using composite grinding balls in an ultra-fine grinding mill. Kinetic analysis of grinding". Powder Technology 100, n. 1 (novembre 1998): 78. http://dx.doi.org/10.1016/s0032-5910(98)00073-4.

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29

Feng, Bao Fu, Hua Li Su, Quan Zhong Zhang, Lei Zheng, Quan Fang Gai e Guang Qi Cai. "Grinding Forces and Grinding Energy in High Speed Grinding for Quenched Steel". Key Engineering Materials 416 (settembre 2009): 504–8. http://dx.doi.org/10.4028/www.scientific.net/kem.416.504.

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Grinding experiments for quenched high-speed tool steel by resin bonded CBN (cubic boron nitride) wheel were conducted with a surface grinder. The grinding forces were measured under different grinding parameters. The effects of grinding parameters on grinding forces and grinding force ratio are discussed. Specific grinding energy and heat flux over the grinding zone are computed according to grinding parameters and grinding forces. The effects of grinding parameters on specific grinding energy and heat flux are investigated.

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30

Xu, Honghai, Xiaoyang Li, Xiping Zhao e Yanjun Zeng. "Grinding dynamometer for vertical glass edge grinding machine with V-grinding wheel". IEEE Instrumentation & Measurement Magazine 17, n. 6 (dicembre 2014): 43–47. http://dx.doi.org/10.1109/mim.2014.6968930.

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31

Vasyukova, A. T., I. U. Kusova, A. I. Belenkov, R. Kh Kandrokov e M. M. Dyshekova. "Investigation of the degree of grinding of the composite grain mixture". BIO Web of Conferences 67 (2023): 02008. http://dx.doi.org/10.1051/bioconf/20236702008.

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Determining the degree of grinding of a functional multicomponent mixture of cereals and legumes is an important indicator of the flour-grinding properties of the constituent components of the recipe for the production technology of flour culinary products. The degree of grinding affects the structure of the flour and the uniformity of the crumb products. The selection of grain components of the recipe was carried out on the basis of the amino acid composition of cereals, legumes and spicy aromatic raw materials. A number of grindings of the raw components of the grain mixture were performed: lentils, peas, millet, pearl barley, spelled, oats, coriander, black pepper, or beans, rye, buckwheat, millet, lentils, spelled, pine nut shells, salt, coriander, black pepper and others compositions. The technological parameters of torn and grinding systems are determined and the indicators of the obtained processing components are characterized: flour, dunst and bran. Grinding schemes for five multicomponent grinding mixtures have been developed, including the preparation of basic and intermediate products. In addition to the composite flour obtained on all technological systems, bran was selected on the V tattered system and from the 3rd to the 7th grinding system, as well as hard and soft dunst. The passage from I-V torn systems is the finished product in the form of flour with a particle size of less than 132 microns. After grinding at all 7 stages of grinding systems, bran is obtained. The passage of 1-7 grinding systems produces a finished product in the form of flour from a composite grain mixture with a particle size of less than 132 microns. As a result of grinding and scattering through a sieve of 2500 microns, the following was obtained: for a mixture of 1NS - 3.2%, for a mixture of 2DS-2 - 1.8%, for a mixture of 3VS-2 - 2.0%, for a mixture of 4DS-3 - 1, 0% and for the mixture 5VS-3 - 1.9%, and when scattered through a sieve of 132 microns, it was obtained: for the mixture 1NS - 19.2%, for the mixture 2DS-2 - 18.0%, for the mixture 3VS-2 - 17.4%, for the mixture 4DS-3 - 20.6% and for the mixture 5VS-3 - 19.8%. Investigated multicomponent samples: 4DS-3; 3VS-2; 5VS-3: 2DS-2; 1HC according to the results of expert opinions can be recommended for industrial processing of composite grain mixtures into flour as food additives balanced in amino acid composition. The use of the developed technological scheme of grinding makes it possible to obtain the required granulometric composition of flour used in baking flour culinary products. In the presence of large fractions inside the functional mixture, it leads to inclusions that are clearly reflected in the crumb of buns, which is negatively evaluated by consumers.

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32

IWATA, Hiroyuki. "Grinding equipment and grinding characteristics of coals." Journal of the Fuel Society of Japan 69, n. 9 (1990): 781–86. http://dx.doi.org/10.3775/jie.69.9_781.

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33

LÖNNBERG, BRUNO. "DEVELOPMENT OF WOOD GRINDING 1. GRINDING MODEL". Cellulose Chemistry and Technology 54, n. 9-10 (11 novembre 2020): 939–41. http://dx.doi.org/10.35812/cellulosechemtechnol.2020.54.90.

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The aim of this study was to develop and test a model expected to be useful in interpretation of stone grinding of wood. Since stone grinding has been in use for about two centuries, it is surprising that some grinding mechanisms still remain undiscovered. The application of an energy balance set-up for the wood and grindstone surfaces, valid for wood grinding under conditions presenting continuity, resulted in a useful model. The theoretical model developed suggests that the ratio of the compression and tension powers, called the power ratio, depends linearly on the specific production. The experimental grinding data tested in this context follow the theoretical model. Hence, it would be a valuable tool in further evaluation of grinding and groundwood data.

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34

Sevostyanov, V. S., V. I. Uralskij, A. V. Uralskij, E. V. Sinitsa e L. S. Uralskaja. "Grinding closed circuit in centrifugal grinding unit". IOP Conference Series: Materials Science and Engineering 560 (10 luglio 2019): 012128. http://dx.doi.org/10.1088/1757-899x/560/1/012128.

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Hashim, Syed Fuad S., e Hashim Hussin. "Effect of Grinding Aids in Cement Grinding". Journal of Physics: Conference Series 1082 (agosto 2018): 012091. http://dx.doi.org/10.1088/1742-6596/1082/1/012091.

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MATSUO, Tetsuo. "Heavy Grinding and High Efficiency Grinding Technology". Journal of the Japan Society for Precision Engineering 75, n. 1 (2009): 40. http://dx.doi.org/10.2493/jjspe.75.40.

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FUJIMOTO, Masakazu, Yuka HIRAIZUMI e Susumu OHISHI. "Grinding Energy Distributions in cBN Deep Grinding". Proceedings of The Manufacturing & Machine Tool Conference 2019.13 (2019): D30. http://dx.doi.org/10.1299/jsmemmt.2019.13.d30.

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HASEGAWA, Yuji, Nobuhide ITOH, Goroh ITOH, Hitoshi OHMORI, Teruko KATOH e Hiroshi MIZOGUCHI. "Development of Conductive Rubber-Bond Wheel by ELID Grinding(Nanoprecision Elid grinding)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.1 (2005): 231–36. http://dx.doi.org/10.1299/jsmelem.2005.1.231.

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NISHIKAWA, Naohiro, Kazuhito OHASHI, Shinya TSUKAMOTO e Toshikatsu NAKAJIMA. "Development of Electric Rust Preventive Machining Method in Cylindrical Grinding(Grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 653–58. http://dx.doi.org/10.1299/jsmelem.2005.2.653.

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40

ICHIDA, Yoshio, Ryunosuke SATO, Yoshitaka MORIMOTO e Yoshihiro INOUE. "Profile Grinding of Superalloys with Ultrafine-Crystalline CBN Wheels(CBN grinding technology)". Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2005.2 (2005): 691–96. http://dx.doi.org/10.1299/jsmelem.2005.2.691.

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41

Zhang, Junping, Weidong Wang, Songhua Li e Han Tao. "Experimental Study on Grinding Force of Zirconia Ceramics in Dry/Wet Grinding Environment". MATEC Web of Conferences 198 (2018): 02004. http://dx.doi.org/10.1051/matecconf/201819802004.

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Abstract (sommario):

The impacts of different linear speed of grinding wheel, grinding depth and workpiece feed speed with or without grinding fluid on grinding force were studied by plane grinding machining of zirconia ceramics. The impacts of different machining environment and grinding parameter on normal and tangential grinding forceswere studied by testing the grinding force during grinding with a force measuring device. The studies showed that the normal and tangential grinding forces decrease with the increase of the linear speed of grinding wheel and increase with the improvement of grinding depth and workpiece feed speed. The grinding depth has the greatest impacts on the normal and tangential grinding forces in dry grinding environment; while in wet grinding environment, the grinding depth exerts the greatest impacts on the normal grinding force and the linear speed of grinding wheel imposes the greatest impacts on the tangential grinding force. In addition, it was found that the normal grinding force in dry grinding is minor than that in wet grinding, that the tangential grinding force in dry grinding is greater than that in wet grinding, and that the grinding force ratio in dry grinding is lower than that in wet grinding.

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42

Liu, Pengzhan, Wenjun Zou, Jin Peng e Furen Xiao. "Investigating the Effect of Grinding Time on High-Speed Grinding of Rails by a Passive Grinding Test Machine". Micromachines 13, n. 12 (30 novembre 2022): 2118. http://dx.doi.org/10.3390/mi13122118.

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High-speed rail grinding is a unique passive grinding maintenance strategy that differs from conventional grinding techniques. Its grinding behavior is dependent on the relative motion between the grinding wheel and rail; hence, it possesses great speed and efficiency. In this study, the effects of the duration of grinding time and the increase in the number of grinding passes on the grinding of high-speed rails were investigated using passive grinding tests with a single grinding time of 10 s and 30 s and grinding passes of once, twice, and three times, respectively. The results show that when the total grinding time was the same, the rail removal, grinding ratio of grinding wheels, rail grinding effect, grinding force, and grinding temperature were better in three passes of 10 s grinding than in one pass of 30 s grinding, indicating that the short-time and multi-pass grinding scheme is not only conducive to improving the grinding efficiency and grinding quality in the high-speed rail grinding but can also extend the service life of the grinding wheels. Moreover, when the single grinding times were 10 s and 30 s, respectively, the grinding removal, grinding efficiency, grinding marks depth, and surface roughness of rail increased with the number of grinding passes, implying that the desired rail grinding objective can be achieved by extending the grinding time via the multi-pass grinding strategy. The results and theoretical analysis of this study will contribute to re-conceptualizing the practical operation of high-speed rail grinding and provide references for the development of the grinding process and grinding technology.

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WANG Zi-guang, 王紫光, 高. 尚. GAO Shang, 朱祥龙 ZHU Xiang-long, 董志刚 DONG Zhi-gang e 康仁科 KANG Ren-ke. "Grinding wheel for low-damage grinding of silicon wafers and its grinding performance". Optics and Precision Engineering 25, n. 10 (2017): 2689–96. http://dx.doi.org/10.3788/ope.20172510.2689.

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44

MATSUI, Satoshi, Tetsuya FUKE, Taihei OSAKI e Shunsuke YAMASAKI. "302 Automatic Measurement of Grinding Force in Surface Grinding : Case of Plunge Grinding". Proceedings of Conference of Chugoku-Shikoku Branch 2005.43 (2005): 81–82. http://dx.doi.org/10.1299/jsmecs.2005.43.81.

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45

SAITO, Taisuke, Hiraku NGAYOSHI, Nobuhide ITOH, Teruko KATO, Hitoshi OHMORI e Katsuya ISHII. "503 Grinding characteristics of Ti alloy on ELID grinding using nanocarbon grinding fluid". Proceedings of Yamanashi District Conference 2011 (2011): 124–25. http://dx.doi.org/10.1299/jsmeyamanashi.2011.124.

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46

WU, Yongbo, Katsuo SYOJI, Tsunemoto KURIYAGAWA, Toru TACHIBANA e Masana KATO. "Evaluation of Grinding Conditions Using Dynamic Components of Grinding Force in Centerless Grinding." Journal of the Japan Society for Precision Engineering 67, n. 9 (2001): 1443–47. http://dx.doi.org/10.2493/jjspe.67.1443.

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47

Tran, Thi-Hong, Xuan-Hung Le, Quoc-Tuan Nguyen, Hong-Ky Le, Tien-Dung Hoang, Anh-Tung Luu, Tien-Long Banh e Ngoc-Pi Vu. "Optimization of Replaced Grinding Wheel Diameter for Minimum Grinding Cost in Internal Grinding". Applied Sciences 9, n. 7 (31 marzo 2019): 1363. http://dx.doi.org/10.3390/app9071363.

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Abstract (sommario):

This paper shows an optimization study on calculating the optimum replaced wheel diameter in internal grinding of stainless steel. In this work, the effects of the input factors, including the initial diameter, the grinding wheel width, the ratio between the length and the diameter of the work-pieces, the dressing depth of cut, the wheel life and the radial grinding wheel wear per dress on the optimum replaced grinding wheel diameter were considered. Also, the effects of cost components, including the cost of the grinding machine and the wheel cost were examined. Moreover, to estimate the influences of these parameters on the optimum replaced diameter, a simulation experiment was given and conducted by programming. From the results of the study, a regression equation was proposed to calculate the optimum replaced diameter.

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48

Bozhko, Tetiana, e Liudmyla Samchuk. "THE INFLUENCE OF DIMENSIONAL RELATIONS ON THE ACCURACY OF THE FINAL SIZE WHEN GRINDING THE PART". Sworld-Us Conference proceedings, usc16-01 (30 gennaio 2019): 17–22. http://dx.doi.org/10.30888/2709-2267.2023-16-01-042.

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Abstract (sommario):

The mechanism of the formation of the size of the part as a result of successive removal of metal from its surface during the interaction of the tool and the workpiece during the grinding process is considered. The interaction of the part with the grindin

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49

Liu, Peng-Zhan, Wen-Jun Zou, Jin Peng, Xu-Dong Song e Fu-Ren Xiao. "Study on the Effect of Grinding Pressure on Material Removal Behavior Performed on a Self-Designed Passive Grinding Simulator". Applied Sciences 11, n. 9 (30 aprile 2021): 4128. http://dx.doi.org/10.3390/app11094128.

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Abstract (sommario):

Passive grinding is a new rail grinding strategy. In this work, the influence of grinding pressure on the removal behaviors of rail material in passive grinding was investigated by using a self-designed passive grinding simulator. Meanwhile, the surface morphology of the rail and grinding wheel were observed, and the grinding force and temperature were measured during the experiment. Results show that the increase of grinding pressure leads to the rise of rail removal rate, i.e., grinding efficiency, surface roughness, residual stress, grinding force and grinding temperature. Inversely, the enhancement of grinding pressure and grinding force will reduce the grinding ratio, which indicates that service life of grinding wheel decreases. The debris presents dissimilar morphology under different grinding pressure, which reflects the distinction in grinding process. Therefore, for rail passive grinding, the appropriate grinding pressure should be selected to balance the grinding quality and the use of grinding wheel.

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50

Liu, Peng-Zhan, Wen-Jun Zou, Jin Peng, Xu-Dong Song e Fu-Ren Xiao. "Designed a Passive Grinding Test Machine to Simulate Passive Grinding Process". Processes 9, n. 8 (29 luglio 2021): 1317. http://dx.doi.org/10.3390/pr9081317.

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Abstract (sommario):

Passive grinding is a high-speed rail grinding maintenance strategy, which is completely different from the conventional rail active grinding system. In contrast to active grinding, there is no power to drive the grinding wheel to rotate actively in passive grinding. The passive grinding process is realized only by the cooperation of grinding pressure, relative motion, and deflection angle. Grinding tests for passive grinding can help to improve the passive grinding process specifications and be used for the development of passive grinding wheels. However, most of the known grinding methods are active grinding, while the passive grinding machines and processes are rarely studied. Therefore, a passive grinding test machine was designed to simulate passive grinding in this study. This paper gives a detailed description and explanation of the structure and function of the passive grinding tester. Moreover, the characteristics of the grinding process and parameter settings of the testing machine were discussed based on the passive grinding principle. The design of a passive grinding test machine provides experimental equipment support for investigating passive grinding behavior and grinding process.

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