Results 21 to 30 of about 74,755 (196)

A New Method of Inspecting an Hourglass Worm.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1992
A method of inspecting an hourglass worm is newly proposed. The equation expressing the worm tooth surface involves some constants corresponding to the machine setting of the grinding wheel on a worm grinding machine. The constants differ from the design values because of machine setting error.
OYA, Makoto   +2 more
openaire   +2 more sources

DoWitcher: Effective Worm Detection and Containment in the Internet Core [PDF]

open access: yes, 2007
Enterprise networks are increasingly offloading the responsibility for worm detection and containment to the carrier networks. However, current approaches to the zero-day worm detection problem such as those based on content similarity of packet payloads
NUCCI A   +16 more
core   +1 more source

Theoretical and experimental investigation of accurately turning the TI worm tooth surface

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2015
The toroidal involute worm (TI worm) drive is composed of an involute gear and an hourglass worm generated by the involute gear surface, and it is of great advantages for power transmission.
Yonghong CHEN   +3 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

Rapidly Diversifying Hydrogen‐Bonded Organic Frameworks With Permanent Porosity

open access: yesAngewandte Chemie, Volume 138, Issue 36, 1 September 2026.
This article reviews diversifying hydrogen‐bonded organic frameworks (HOFs) with permanent porosity reported over the past 15 years, based on the molecular structures of their constituent tectons. Furthermore, several distinctive aspects and concepts are described, such as permanent porosity, isostructural (isoreticular) HOFs, and multicomponent mixed ...
Taito Hashimoto, Ichiro Hisaki
wiley   +2 more sources

Study on the spur involute gear meshing with planar enveloping hourglass worm based on local conjugate

open access: yes, 2017
In this paper, a novel multitooth point contact hourglass worm drive is proposed, which is composed of a planar enveloping hourglass worm and a spur involute gear, and both of them can be hardened and precisely ground. This novel hourglass worm drive is
Yan Chen   +3 more
core   +1 more source

Establishment of Straight Profile Hourglass Worm under Virtual Reality

open access: yesJournal of Physics: Conference Series, 2023
Abstract Virtual workpiece is widely used in dynamic simulation and can be imported into the Virtual Gear Measuring Center (VGMC) to be virtually measured. The tooth surface of hourglass worm is complicated, so the dynamic meshing performance is often improved by modification of the tooth surface.
Bin Xiao, Qiang Zhu, Haotian Lin
openaire   +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

A Study on the Grinding of the Hourglass Worm Wheel.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1998
The high performance of the hourglass worm gearing is well known among all types of worm gearings, especially after the developement of HEDCON【○!R】 worm gear reducer. Despite its high performance, the difficulty in manufacturing the hob is one of the obstacles of production and it has been one of the themes of study.
openaire   +2 more sources

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

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