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worm gears

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Published: 01 September 2005
Fig. 16 Mating of worm gear (worm wheel) and worm in a double-enveloping worm gear set More
Image
Published: 01 September 2005
Fig. 18 Mating of worm gear (worm wheel) and worm in a double-enveloping worm gear set More
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Published: 01 September 2008
Fig. 37 Example of grinding cracks on the flank of a worm gear. Source: Ref 85 More
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Published: 01 September 2005
Fig. 52 Overload failure of a bronze worm gear (example 4). (a) An opened crack is shown with a repair weld, a remaining casting flaw, and cracking in the base metal. (b) Electron image of decohesive rupture in the fine-grain weld metal. Scanning electron micrograph. Original magnification More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250001
EISBN: 978-1-62708-345-4
... including prehardening processes, through hardening, and case hardening processes. bevel gears face gears gear design heat treating helical gears herringbone gears hypoid gears internal gears spiroid gears spur gears worm gears GEARS are machine elements that transmit rotary motion...
Image
Published: 01 February 2005
Fig. 12.20 Forging box of a radial precision forging machine illustrating the tool function and adjustment. (a) Dies. (b) Pitman arm. (c) Guides. (d) Eccentric shaft. (e) Adjustment housing. (f) Adjustment screw. (g) Worm gear drive. (h) Adjustment input. (i) Adjustable cam. (k) Forging box More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250293
EISBN: 978-1-62708-345-4
... where very little power is involved. Worm Gears In a single-enveloping worm gear set, in which the worm is cylindrical in shape, several teeth may be in mesh at the same time, but only one tooth at a time is fully engaged. The point (or points) of contact in this type of gear set constitutes too...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
... Abstract Gears can fail in many different ways, and except for an increase in noise level and vibration, there is often no indication of difficulty until total failure occurs. This chapter begins with the classification of gear failure modes, followed by sections discussing the characteristics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250089
EISBN: 978-1-62708-345-4
... between sections to allow shear cutting to be used. Therefore, this process is best suited to large production runs. Hobbing Hobbing is a practical method for cutting teeth in spur gears, helical gears, worms, worm gears, and many special forms. Conventional hobbing machines are not applicable...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... (for rounds and squares) by rotating each adjustment housing through a link, screw, adjustment nut, and worm gear drive powered by one or two hydraulic motors. Each adjustment nut rests, through a piston, on an oil cushion of a hydraulic cylinder. During operation, the forging pressure generates in this oil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250019
EISBN: 978-1-62708-345-4
... Abstract This chapter reviews the knowledge of the field of gear tribology and is intended for both gear designers and gear operators. Gear tooth failure modes are discussed with emphasis on lubrication-related failures. The chapter is concerned with gear tooth failures that are influenced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
.... Gears, because of the wide varieties, sizes, and differences in tooth profiles, represent unique 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200007
EISBN: 978-1-62708-354-6
... ranging from a few pounds to many tons. There is a wide variation in the designs of valves and piping components. Figure 2-96 shows a series of 12 in. (300 mm) worm gear-operated plug valves installed on gas scrubbers in a compressor station. Fig. 2-96 12 in. (300 mm) plug valves installed on gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250129
EISBN: 978-1-62708-345-4
... different types of gears can be die cast, such as spur, helical worm, clusters, and bevel gears. Applications for these types of gears include toys, washing machines, small appliances, hand tools, cameras, business machines, and similar equipment. Forming Stamping and Fine Blanking Stamping...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420001
EISBN: 978-1-62708-452-9
... the action of a worm pinion. This set is called the high-ratio hypoid set ( Fig. 1-7 ). Fig. 1-6. Hypoid gear and pinion set. Fig. 1-7. High-ratio hypoid set. Basic Applied Stresses The loads applied to one tooth by the action of its mating tooth are at any moment of time a line...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.t59360001
EISBN: 978-1-62708-435-2
... are inherently low and rarely the cause of failure. Gearboxes based on orthogonally oriented worm gears ( Fig. 1.1c ) tend to be used for very low-speed applications. As a result, their vibration characteristics are not well studied. Sources and Types of Gearbox Vibrations Of the major types...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 March 2024
DOI: 10.31399/asm.tb.gvar.9781627084352
EISBN: 978-1-62708-435-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630281
EISBN: 978-1-62708-270-9
... to the toe, or edge, of a weld and left unfilled. w wear. The undesired removal of material from contacting surfaces by mechanical action. worm gear. A type of gear in which the gear teeth are wrapped around the shaftlike hub, somewhat as threads are wrapped around a bolt or screw. y yield point. The first...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250077
EISBN: 978-1-62708-345-4
... of gear configurations including spur, worm, face, helical, bevel, internal, and elliptical gears, gear racks, and microgears (for computer memory devices). Selection of a material depends not only on its properties, but also on the manufacturing methods used, part shape and size, molding or machining...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250039
EISBN: 978-1-62708-345-4
... Abstract This chapter describes important requirements for ferrous and nonferrous alloys used for gears. Wrought surface-hardening and through-hardening carbon and alloy steels are the most widely used of all gear materials and are emphasized in this chapter. The processing characteristics...