Results 11 to 20 of about 3,830 (267)
Australian and New Zealand Journal of Ophthalmology, 1986 AbstractInvolutional ptosis was corrected by either an anterior or posterior approach in 105 eyelids The posterior approach was preferred unless there was a specific indication for the anterior approach which included excess skin and bulky eyelids At operation approximately 10% of cases were found to have fatty degenerative changes in the anterior part
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Involutions and semiinvolutions [PDF]
Czechoslovak Mathematical Journal, 2006 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Different teeth profile shapes of polymer gears and comparison of their performance
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2017 This article presents a lifespan testing analysis of polymer gears manufactured by cutting. Compared to injection molding, machine cutting provides higher accuracy of gear geometry. Two different tooth flank geometries were tested; i.e.
Damijan ZORKO +3 more
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High-order involute modified noncircular bevel gears
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014 Noncircular bevel gears (NBGs) is a kind of spatial transmission mechanism which can be used to transmit the motion and power between two intersecting axes with a variable transmission ratio and according to a suitable motion program.
Jiqiang XIA, Kan SHI, Chunjie WANG
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Machines, 2023 This work studies the tooth surface wear of floating involute spline couplings. Based on the energy dissipation method, this study takes the floating involute spline couplings as the research object, divides the whole wear cycle into three wear stages ...
Xiangzhen Xue +4 more
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High-contact ratio spur gears with conformal contact and reduced sliding
Results in Engineering, 2022 The high-contact ratio (HCR) spur gear is a possible choice for a quiet and smooth gearing system. However, HCR spur gear of the involute type has several constraints, such as high sliding contact under large loads and interference problems in high speed
Ahmed W. Hussein, Mohammad Q. Abdullah
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Oil Film Stiffness of Double Involute Gears Based on Thermal EHL Theory
Chinese Journal of Mechanical Engineering, 2021 Lubrication failure is one of the main failure forms of gear failure. Time varying meshing stiffness is an important factor affecting the dynamic behavior of gears.
Zhaoming Yin, Zhimin Fan, Feng Jiang
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Dimensional Precision of Plastic Gear Tooth Profiles Produced by 3D Printing
Engineering ProceedingsPlastic spur gears have gained significant attention in the last couple of decades in all industries where rotational motion is involved. Plastic gears have the advantages of light weight, shock absorption, low operation noise levels, and functioning ...
Erzsébet Egyed-Faluvégi +2 more
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Evolutes and Involutes of Frontals in the Euclidean Plane
Demonstratio Mathematica, 2015 We have already defined the evolutes and the involutes of fronts without inflection points. For regular curves or fronts, we can not define the evolutes at inflection points. On the other hand, the involutes can be defined at inflection points.
Fukunaga Tomonori, Takahashi Masatomo
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Reduction of contact stresses using involute gears with asymmetric teeth [PDF]
Scientific Journal of Silesian University of Technology. Series Transport, 2015 Asymmetrical involute gears have a different value of the operating pressure angle for right and left side of the gear. These teeth are suitable for one direction of rotation. Such teeth enable to change the length of the generating line.
Jarmila VOJTKOVÁ
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