Results 1 to 10 of about 82 (73)

Geometric Research on Running-in Properties of Cone-generated Hourglass Worm Gearing

open access: yesJixie chuandong, 1994
以锥面二次包络环面蜗杆传动为例,考察了二次包络环面蜗轮滚切后齿面残留金属构成的切削棱的高度、切削棱的走向与分布以及和容屑槽数目的关系。为深入研究这类蜗轮的跑合性能,寻求减少跑合量的滚刀设计参数奠定了基础。
秦大同, 谭建平, 张光辉
doaj   +1 more source

Study on Selection of the Anti-wear Additives for Lubricants of the Double Enveloping Hourglass worm Gearing

open access: yesJixie chuandong, 1996
二次包络蜗轮副是一种新型的蜗轮蜗杆传动副,目前仍没有适用的润滑油.为研制其润滑油,本文选用传统的硫型抗磨添加剂、自制的有机铜抗磨剂和有机硼抗磨剂,在HQ-1型摩擦磨损试验机上与蜗轮副材料进行配伍性研究,测出P—V曲线;在滚滑两用摩擦磨损试验机上测出与蜗轮副材料配合时的胶合温度;在MQ—800型四球机上测出磨损系数,结果表明:有机铜抗磨添加剂和有机硼抗磨添加剂对蜗轮副显示出较好的减摩、抗磨和抗胶合性能,传统的硫型抗磨添加剂不适合蜗轮副 ...
蒋松   +4 more
doaj   +1 more source

Mathematical model of the worm wheel tooth flank of a double-enveloping worm gear

open access: yesAlexandria Engineering Journal, 2021
This paper presents a novel method for determining the worm wheel tooth flank surface. The worm wheel model is developed according to the theory of gearing and the gear generation mechanism. Two cases are considered simultaneously.
Piotr Polowniak   +2 more
doaj   +1 more source

A study on hourglass-worm gearings designed to concentrate surface normals. A gear disign using an hourglass-worm gearing with an arcuate tooth profile.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1990
In order to avoid the influence of the displacement of gear axes under load upon tooth contact, the authors propose that a projective group of the surface normals should be concentrated upon the intersection point of the plane perpendicular to the wheel axis and the axis about which the worm axis rotates, displacing its position relative to the wheel ...
SHUMACHI, Shigeyuki   +3 more
openaire   +2 more sources

Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding

open access: yesJournal of Spectroscopy, Volume 2019, Issue 1, 2019., 2019
Cast iron is an iron‐carbon alloy widely used in mechanical engineering. Nickel‐base or cobalt‐base alloy coatings prepared by laser cladding can improve the surface properties of cast iron, thereby increasing the service life of the components; however, due to the poor weldability and high carbon content of cast iron, the use of laser cladding to ...
Hao Liu   +7 more
wiley   +1 more source

Hourglass Worm Gears Designed to Concentrate Surface Normals

open access: yesJSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing, 1994
To avoid the influence of small displacement of gear axes under load, the authors propose that all contact normals of a tooth surface should be at right angles to the direction of the small displacement induced at each contact point under load. On the basis of this state of surface normals, a few methods of tooth surface generation have been devised ...
Shimachi, Shigeyuki   +3 more
openaire   +2 more sources

Timing by rhythms: Daily clocks and developmental rulers

open access: yesDevelopment, Growth &Differentiation, Volume 58, Issue 1, Page 43-58, January 2016., 2016
We compare and contrast two biological "clocks". The circadian clock is used by organisms to regulate their behaviour in time with the 24 hour daily planetary cycle, whereas the segmentation clock appears to be an oscillatory ruler that is used briefly during development to subdivide the body axis into morphological segments.
Alexis B. Webb, Andrew C. Oates
wiley   +1 more source

A Study on Hourglass-Worm Gearing Designed to Concentrate Surface Normals. A Gear Design Using an Hourglass-Worm Gearing Whose Worm Tooth Surface Is Generated by the Grinding Wheel with an Involute Helicoid.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1991
Displacement of the worm axis relative to the wheel axis under load is considered to be the helical movement rotating about the instantaneous axis. In order to avoid the influence of the displacement of gear axes under load upon tooth contact, the authors propose that the surface normals should be intersected perpendicular to the direction of helical ...
SHIMACHI, Shigeyuki   +3 more
openaire   +2 more sources

Exploring visual communication in corporate sustainability reporting: Using image recognition with deep learning

open access: yesCorporate Social Responsibility and Environmental Management, Volume 31, Issue 4, Page 3210-3234, July 2024.
Abstract Photographs and images in sustainability reports can affect readers' impressions of a company. This study conducts an exploratory analysis to investigate the impact of visual content on sustainability reporting and identify corporate reporting strategies.
Yuriko Nakao   +3 more
wiley   +1 more source

无侧隙双滚子包络环面蜗杆传动的啮合性能分析

open access: yesJixie chuandong, 2009
Based on the space engagement theory,the meshing function of the non-backlash hourglass worm gearing,the tooth surface equations of worm and the contacting line equation of worm gear are established.
王凯, 王进戈, 邓星桥
doaj  

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