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Multi-Physically Programmable Tubular Origami Metamaterials: Exploitable Nexus of Geometry, Folding Mechanics and Stimuli-Responsive Physics. [PDF]
Adv Sci (Weinh)Sharma A, Naskar S, Mukhopadhyay T.
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Mathematical model and worm wheel tooth working surfaces of the ZN-type hourglass worm gear set
Mechanism and Machine Theory, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chung-Biau Tsay
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Error-sensitivity analysis of hourglass worm gearing with spherical meshing elements
Mechanism and Machine Theory, 2013Abstract This paper aims to study the influence of tooth errors and shaft misalignments on the tooth contact in hourglass worm gearing with spherical meshing elements. The geometries of the worm and worm-gear tooth surfaces are described, and the distribution characteristic of contact lines is explored.
Houjun Chen +5 more
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Principle and Practice of the Measurement for Hourglass Worms and Hobs
Applied Mechanics and Materials, 2017Compared with cylindrical worm gears, hourglass worm gears have better transmission performance. The measurement of the hourglass worms and the hobs is a critical issue to restrict the application of the hourglass worm gear transmission. To solve this problem, an hourglass worm and hob measuring principle and a measuring machine which achieves the ...
Bo Yu +6 more
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A Novel Precision Grinding Method for Roller Enveloping Hourglass Worm
International Journal of Precision Engineering and ManufacturingYan Chen +4 more
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Precision measurement of planar double-enveloping hourglass worms
Measurement, 2016Abstract The measurement of planar double-enveloping hourglass worms has always been a technical problem in the field of gear metrology. To solve this problem, we propose a new method and develop a measuring machine to inspect each deviation of the worms.
Zhaoyao Shi, Bo Yu, Fayang He
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An Accurate Modeling Method of the Plane Enveloping Hourglass Worm
Applied Mechanics and Materials, 2011This paper proposes a new method for creating the accurate 3D geometry model of the plane enveloping hourglass worm efficiently. The working tooth surfaces of the worm are enveloped by the mother plane surfaces. And according to the gear engagement theory, the equations of the surfaces enveloped are established. By combination with engineering practice,
Xiao An Chen, Li Ming Tang
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A Study on Hourglass Worm Gearing With Developable Tooth Surfaces
Journal of Mechanical Design, 1978The authors developed a new type of hourglass worm gearing based on the authors’ own theories [1, 2]. The worm having the developable tooth surface can be ground precisely. The pair of the tooth surfaces of the gearing have comparatively small relative curvature and contact with each other with the contact line lying perpendicularly to the relative ...
T. Sakai +3 more
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