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spur gears

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
...) lever, inboard flap hinge bolt, nose landing gear piston axle, multiple-leg aircraft-handling sling, aircraft hoist sling, internal spur gear, and MLG axle. In addition, the chapter provides information on full-scale fatigue testing, nondestructive testing, and failure analysis of fin attach bolts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270102
EISBN: 978-1-62708-301-0
.... dowel bolts fatigue failure fractography low-cycle fatigue test metallography scanning electron microscopy Summary Background Pertinent Specifications and Manufacturing Details Testing Procedure and Results The spur and bevel gears of an aircraft engine were fastened by a set...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770199
EISBN: 978-1-62708-337-9
... depth of 1.6 to 1.7 mm. Source: Ref 16 Fig. 8.4 Grinding cracks on the flanks of a small spur gear wheel. Fig. 8.9(a) Residual stresses in SAE 4340 steel (quenched and tempered, 50 HRC) after grinding with CBN and diamond. Source: Ref 14 Conventional grind Diamond RVG-W...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
... ). There are also “complete press drives” that consist of a flywheel, a clutch/brake, and a planetary gear set for reduction. These units have less angular momentum compared to a system with a spur gear set; in consequence, they are can apply more energy per stroke. Recently, a switchable gearbox has also been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... in MPa, and all hardness values are converted to HV. Designers should refer to the appropriate standard. This table is for spur and helical gears. (a) Depends on bainite content. (b) Varies with core hardness and/or strength Fig. 1 Failure regions of industrial and automotive spur...
Book Chapter

By Eren Billur
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400181
EISBN: 978-1-62708-316-4
... and axial piston pumps are common. Gear type pumps have constant displacement per revolution (commonly in cc/rev or in. 3 /rev). They can be either external gear type ( Fig. 12.4a ), where two external spur gears are used, or internal gear type, where one external gear is mated with an internal gear...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130177
EISBN: 978-1-62708-284-6
.... , Daniewicz S.R. , and Nellums R. , Increasing the Bending Fatigue Strength of Carburized Spur Gear Teeth by Presetting , Int. J. Fatigue , Vol 21 , 1999 , p 549 – 556 10.1016/S0142-1123(99)00011-0 67. Funatani K. , Residual Stresses during Gear Manufacture , Handbook of Residual...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... applications. External spur and helical gears, bevel and worm gears, internal gears, racks, and sprockets are good examples of the kinds of gears of which the size can range from less than 6 mm (0.25 in.) to greater than 3 m (12 feet). As with shafts, the hardened pattern may be through the cross section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
... , Oct 6–8, 1982 ( Stratford upon Avon, England ), p 287 – 298 • Sellin W. , Metalldrücken , Springer Verlag , 1955 , p 1 – 71 10.1007/978-3-662-22154-9 • Spur G. , Handbuch der Fertigungstechnik—Umformen , Band 2/1 , Spur G. , Ed., Hanser Verlag , 1983...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
.... Source: Ref 36 Fig. 7.17 Effect of low-temperature tempering on the service life of carburized and hardened gears. Root bending resistance vs. tempering: (A) impact, tempering required; (B) low cycle, tempering beneficial; (C) high cycle, tempering has varying effect; (D) very high cycle...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... . It is significant that the dedenda (i.e., the regions below the pitch line) of all gear teeth are in negative sliding. This means that this is where surface-origin pitting is most likely to occur, other conditions being equal. Pure rolling occurs only on the pitch line of spur, bevel, and helical gears...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... also originate from rolling contact in gears and bearings, as discussed in Chapter 12, “Wear Failures—Fatigue ,” in this book. Fig. 19 Subsurface-origin fatigue fracture in an induction-hardened 3¼ in.-diam 1541 steel axle that was continuously tested in rotating bending fatigue...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... a particle of wear debris. Metal also may be transferred from one surface to another by the microwelding process. Arrows indicate direction of sliding. Source: Ref 1 Fig. 12 Severe adhesive wear on a stationary shaft upon which a planetary gear rotated in the presence of an inadequate lubricant...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770077
EISBN: 978-1-62708-337-9
... on Case Toughness of Automotive Gear Steels , Heat Treatment ’87 , The Metals Society , 1987 38. Niemann G. and Seitzinger A. , “Calculation of Scoring Resistance for Spur and Helical Gears,” ISO 6336 , International Standards Organization , 1996 39. Matveevsky R.M...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060001
EISBN: 978-1-62708-261-7
..., and Ford’s pioneering use of weight-saving vanadium alloys in Model T cars. It explains how interest in chromium alloys spread throughout the world, spurring the development of commercial stainless steels. The chapter concludes with a bullet point timeline of early 20th century achievements and a brief...