Results 21 to 30 of about 1,024 (244)

MODERN METHODS OF GEAR MILLING OF HARDENED LARGE-MODULE GEARS

Scientific Journal of Polonia University, 2021
The latest developments of modern methods of high-speed gear milling of large-module cylindrical gears, both for preliminary grinding of teeth and for final blade processing of gears, are considered. For high-speed blade gear processing, promising designs of worm carbide cutters have been developed, manufactured and implemented.
Kateryna Kamchatna-Stepanova, Oleksandr Klochko   +1 more
openaire   +2 more sources

Tribological evaluation of sulfurnitrided gears without liquid lubricant

Nihon Kikai Gakkai ronbunshu, 2021
Sulfurnitriding, one of various surface treatments for mechanical components made of steels realizes solid lubrication for decreasing friction force of each contact point and keeping lubricating condition on the surface.
Kazuya HORIE, Makoto NANKO, Satoru NISHIWAKI   +2 more
doaj   +1 more source

Influence of Hardenability on Gear Distortions Caused by Hardening

Bulletin of JSME, 1983
The kinds of materials have different effects on gear distortions caused by hardening, even if heat-treatments of the raw material and gear are the same. In this experiment, the test gears which were made of steel materials containing different amounts of some chemical compositions in two kinds of steel were case-hardened.
FUJIO, Hiroshige, OKADA, Muneki
openaire   +3 more sources

Effects of Gear-Side Case-Hardening on Residual Stress of Case-Hardened Gears.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2001
This paper presents a study on effects of gear-side case-hardening on residual stresses of case-hardened gears. The carbon content of each element of the FEM models due to carburizing was computed on the basis of the relation between carburizing condition and carbon content distribution. A heat conduction analysis and an elastic-plastic stress analysis
MIYACHIKA, Kouitsu, ODA, Satoshi, XUE, Wei-Dong, MITSUI, Yoshinori, FUJIO, Hiroshige, NAMBA, Chiaki   +5 more
openaire   +2 more sources

Effect of Chill Plate Thickness on Surface Hardening and Dimensional Accuracy of Nodular Cast Iron Gears Manufactured by the Chill Casting Method

Designs, 2023
The gear manufacturing method is an important determinant of their performance and service life. Surface hardness and dimensional accuracy play a significant influence in determining wear and contact fatigue in gears. This study’s goal was to measure the
Natalino Fonseca Da Silva Guterres, Rusnaldy Rusnaldy, Achmad Widodo   +2 more
doaj   +1 more source

CUT LAYER IN A MACHINING OF THE CYLINDRICAL GEARS BY THE METHOD OF 5-AXIS ROLL AWAY OF THE END MILL CUTTER ON THE OUTLINE OF THE TOOTH

Technologia i Automatyzacja Montażu, 2021
Gear trains are a key element in the transmission of torque and rotational speed of rotating parts. Technological progress, and five-axis machining in particular, is an interesting and still little-known alternative in the production of this type of ...
Michał Chlost
doaj   +1 more source

Distortions and Residual Stresses of Gears Caused by Hardening : 4th Report, Case-Hardening of Gears

Bulletin of JSME, 1979
Distortions of case-hardened gears were calculated using the method introduced by the authors, and the results were compared with experimental ones. The results obtained in this paper are summarized as follows. (1) For case-hardening, gear distortions can be calculated tolerably well from the estimation of quenched structure. (2) In this investigation,
FUJIO, Hiroshige, AIDA, Toshio, AKIZONO, Junichi   +2 more
openaire   +2 more sources

Tooth flank fracture in spiral bevel gears - Multiaxial fatigue and material properties

, 2022
Due to the improvements made in the prediction and prevention of surfaceinitiated gear failure modes like pitting, tooth root breakage, scuffing and micropitting, a transition from surface to subsurface-initiated failures is occurring on spiral bevel ...
Böhme, Stephan Andre
core   +1 more source

Study on the Root Crack Propagation Characteristics and Residual Life of Case-hardened Gears

Jixie chuandong, 2023
In order to study the influence of tooth root cracks on the fatigue life of case-hardened gears, taking an involute case-hardened gear as the research object, the mechanism of the tooth root fatigue crack growth is analyzed based on the fracture ...
Wu Luji, Yang Shihao, Yang Linjie, Li Youhua   +3 more
doaj  

Surface finishing method for tooth flank of heat-treated surface-hardened small gears using a gear-shaped tool composed of alumina-fiber-reinforced plastic [PDF]

, 2015
High-accuracy gears are necessary to ensure the strength and silence of compact geared motors. Heat-treated surface-hardened small gears are employed in the reducer of a compact geared motor.
Komori, Masaharu, Fujisawa, Yoshihiro
core   +1 more source