Results 131 to 140 of about 9,857 (246)
Bearing and gear steels for aerospace applications [PDF]
Research in metallurgy and processing for bearing and gear steels has resulted in improvements in rolling-element bearing and gear life for aerospace application by a factor of approximately 200 over that obtained in the early 1940's.
Zaretsky, Erwin V.
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Hardening Distortions of Serial Produced Gears
, 2017 Hardening distortions are unwanted changes in shape and dimension that arise during hardening of steel components. Uncontrolled distortions induce random errors to the manufacturing process, and have a strong negative impact on manufacturing costs. The distortions are not only caused by the hardening process, several factors from previous manufacturing
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Rotorcraft transmissions [PDF]
Highlighted here is that portion of the Lewis Research Center's helicopter propulsion systems program that deals with drive train technology and the related mechanical components.
Coy, John J.
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Ingeniería Mecánica, 1999 Se exponen y discuten los inconvenientes de las clásicas y conocidas recomendaciones para decidir el espesor efectivo de capaendurecida en los dientes cementados de engranajes cilíndricos y cónicos.
G. González Rey
doaj
Surface pitting fatigue life of noninvolute, low-contact-ratio gears [PDF]
Spur gear endurance tests were conducted to investigate the surface pitting fatigue life of noninvolute gears with low numbers of teeth and low contact ratios for use in advanced applications.
Townsend, Dennis P.
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ANALYSIS OF RESIDUAL STRESSES IN THE HARDENED LAYER GEARS SKIDDERS CHEMICAL SINCE THE PROCESSING
Литьë и металлургия, 2015 The operating conditions of forest machines are analyzed. Transmission parts disabled as a result of intensive wear have been determined, their fracture mechanism has been established. A technique for diffuse impregnation of component parts with powdered
M. N. Pischov, E. P. Andreykovets
doaj
Test Rig for the In Situ Measurement of the Elastic Tooth Deflection of Plastic Gears. [PDF]
Polymers (Basel), 2023 Herzog C, Drummer D.
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Technological Aspects of Manufacturing and Control of Gears-Review. [PDF]
Materials (Basel), 2023 Boral P, Gołębski R, Kralikova R.
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Generation of spiral bevel gears with zero kinematical errors and computer aided tooth contact analysis [PDF]
Kinematic errors in spiral bevel gears are a major source of noise and vibrations in transmissions. A method for the generation of Gleason's spiral bevel gears which provides conjugated gear tooth surfaces and an improved bearing contact was developed. A
Coy, J. J. +3 more
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Transmission research activities at NASA Lewis Research Center [PDF]
A joint research program, to advance the technology of rotorcraft transmissions, consists of analytical and experimental efforts to achieve the overall goals of reducing transmission weight and noise, while increasing life and reliability.
Lewicki, D. G.
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