Use of 4D Printing in Orthodontics: Self-Adjusting Brackets for Dynamic Tooth Movement by Mohammad Khursheed Alam, Mohammad Younis Hajeer, Ebtehal Dhyab M. Alserhani, Talal Olayan Albuhiran, Abdulrhman Atyah Alzhrani, Abdullah Musallam Alsalem, Salman Ahmed Aljudaya, Hind Hani Alruwaili

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IMPROVING THE EFFICIENCY OF HIGH-SPEED MILLING OF THIN-WALLED ELEMENTS OF PARTS OF COMPLEX GEOMETRIC SHAPES by Anton Germashev, Victor Logominov, Yelena Kozlova, Vladimir Krishtal

“…The subject matter of the article is the vibration during high-speed milling of thin-walled elements of parts of complex geometric shapes. The aim of the article is to determine the possibility of increasing the efficiency of high-speed milling of thin-walled parts by finding vibration-proof processing conditions. …”
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THE EFFICIENCY OF TECHNIQUE OF DOUBLE ARCHES BY THE TREATMENT OF PATIENTS WITH ANOMALIES OF OCCLUSION by Sergei Vladimirovich Dmitrienko, Dmitry Anatolyevich Domenyuk, Anzhelika Vladimirovna Kokareva, Ernessa Grigorievna Vedeshina

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An experimental study of the effect of temperature on teeth breaking efficiency based on rock mechanical properties by Dongdong Song, Mingmin He, Jian Wang, Heyi Yuan, Ke Liu, Zijie Li, Heng Yin, Jun Yan, Yingxin Yang, Zhen Liu

“…Conical teeth can be used to select the tooth shapes of bits to improve drilling efficiency. …”
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Mathematical model of shaping toothed products using volumetric tool with one motion parameter by A. A. Silich, Eh. M. Yusupova

“…The development of a mathematical model of one-parameter shaping of a toothed product is considered. As an example, shaping of the side surface of the teeth of the Novikov gearing is studied; the mode and magnitude of the change in the shaping error heightwise the wheel tooth are shown. …”
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Scraper Conveyor Sprocket Tooth Sequence Images Acquisition Device based on Shape From Focus by Liu Yinchuan, Ding Hua, Li Ning

“…Due to the problems of complicated process，low accuracy and efficiency of the existing wear measurement method of scraper conveyor sprocket tooth，a sprocket tooth sequence images acquisition device is designed based on shape from focus.By controlling the movement module of the device，the axial and circumferential alignment between an industrial camera and a sprocket tooth is realized，then control the sprocket tooth radial stepping motor every step，collect a image，repeat the cycle 100 times.And the sequence images acquisition of the sprocket tooth is completed.Test results show that sequence images acquisition device can quickly acquire clear sequence images of the sprocket tooth and provide hardware support and image data samples for the sprocket wear measurement of the scraper conveyor.…”
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Research on Digital Design and Tooth Shape Optimization of Non-circular Gears Based on Envelope Features by Yongping Liu, Beibei Yun, Yongqiao Wei, Changbin Dong, Zhongtao Ren

“…At the same time， in view of the impact vibration and noise problems in the process of non-circular gear transmission， a precise， efficient and general modification design method of non-circular gear tooth profile is obtained by taking the modification of gear shaping cutter as the means and the modification of non-circular gear tooth profile as the purpose. …”
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Advanced tooth profile roughing system (Innovating gear skiving with diamond-shaped edge tools) by Hiroki YONEZAWA, Jun’ichi KANEKO, Takeyuki ABE, Akihiro NAKAZATO

“…To validate these methods, an experiment was conducted to machine an asymmetrical tooth profile using a diamond-shaped edge skiving tool. …”
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Meshing performance analysis of the measured gear with error based on the multi-section structure by SONG Meiqi, WANG Zhonghou, CHEN Mingzhi, LI Yan, WANG Fa

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Influence of the Adaptive Torque Control Motion on the Ability of Neolix EDMax to Reach Working Length When Used as a Single Shaping File—An In Vitro Study by Vlad Mircea Lup, Carlo Gaeta, Ashkan Tavakkoli, Andreas Louloudiadis, Simone Grandini, Gabriela Ciavoi

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Evaluation of dentin thickness preservation and the efficiency of instrumentation between traditional and guided endodontic access in mandibular central incisors by Pooja R. Kesharani, Shalini D. Aggarwal, Nishtha K. Patel, Jhanvi Patel, Ankita Bansal, Naman Patel

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Innovative Design and Performance Evaluation of Bionic Imprinting Toothed Wheel by Zhihong Zhang, Xiaoyang Wang, Jin Tong, Carr Stephen

“…This study was carried out based on evidence that this special outer contour curve has the potential of reducing soil penetration resistance and could enhance soil-burrowing efficiency. A toothed wheel is a typical agricultural implement for soil imprinting, to increase its working efficiency; the approach of the bionic geometrical structure was utilized to optimize the innovative shape of imprinting toothed wheel. …”
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INNOVATIVE V-SHAPED CULTIVATING TINE by N. E. Rudenko, S. D. Kayvanov, F. N. Zavyalik

“…The working tools allowing the machine to operate at the increased speeds are necessary, that will increasing its efficiency by 30-40 percent. The system of copying simplifying desingn and reducing variability of tillage depth requires the solution. …”
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Research on Windage Power Loss of High-speed Arc Tooth Cylindrical Gear by Shuai Mo, Heyu Dang, Zhenxing Zou, Wenjie Tang, Zongxiang Yue, Hanjun Gao

“…For gears running at high speeds， windage power loss is one of the main factors for low transmission efficiency. Computational fluid dynamics（CFD） technology is used to establish the air flow field model around the arc tooth cylindrical gear. …”
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Research of the Method of Chamfering Tooth Crest for Spiral Bevel Gear Using Spherical Cutter by Wei Wei, Zhang Lianhong

“…In order to realize chamfering tooth crest for spiral bevel gear efficiently,the feasibility of chamfering method with spherical cutter and machining center is researched. …”
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Determining Aligner-Induced Tooth Movements in Three Dimensions Using Clinical Data of Two Patients by Ignacio Filippon, Christine Tanner, Jeannette A. von Jackowski, Georg Schulz, Tino Töpper, Bert Müller

“…The data on these orthodontic treatments indicate the extent to which actual tooth movement lags behind the treatment plan, as represented by the aligner shapes. …”
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A modification design method for the angular misalignment of the spline drum shaping by YUAN Xichuan, LIU Qi, TANG Jinyuan, LI Yuan, SU Hui

“…ObjectiveTo address the edge contact and uneven load distribution caused by angular misalignment in involute spline pairs, an efficient optimal design method based on contact mechanical characteristics was proposed, overcoming the limitations of the low efficiency in traditional trial-and-error crowning modification approaches.MethodsFocusing on angular misaligned involute spline pairs, analytical prediction formulas for tooth contact regions under different modification amounts were established through analysis of contact extrusion deformation characteristics in drum-shaped splines. …”
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Research on Multi-Objective Optimization of Helical Gear Shaping Based on an Improved Genetic Algorithm by Shengmao Zhou, Dehai Zhang

“…Traditional design and shaping methods of helical gears may have difficulties in meeting the requirements of multiple performance indicators simultaneously, such as tooth surface accuracy, load-carrying capacity, and transmission efficiency. …”
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Cutting forces in gear machining by disk milling cutters by S. Pasternak, Y. Danylchenko

“…Experimental study of cutting force components when gear cutting with disc-shaped milling tools by using different machining strategies as well as determination of advantages and disadvantages of these strategies based on obtained experimental results. …”
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Automated Layer-by-Layer Soil Tillage Machine Using a Highly Turbulent Air Jet by B. Kh. Akhalaya, Yu. S. Tsench, N. I. Belyaeva

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