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thread cutting

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... Abstract Beryllium’s machining characteristics are similar to those of heat-treated cast aluminum and chilled cast iron. Like the other materials, it can be turned, milled, drilled, bored, sawed, cut, threaded, tapped, and trepanned with good results. This chapter explains how these machining...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280189
EISBN: 978-1-62708-267-9
... the area being broached is preferred and, in most applications, is mandatory for acceptable results. In some applications, cutting fluids similar to thread cutting oil have been used successfully, but the use of such fluids is usually a compromise, especially when broaching nickel-base or cobalt-base...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290207
EISBN: 978-1-62708-306-5
..., the failure may not be discovered until after the fastener is put into service. Thread Production There are basically two methods of producing threads, cut and rolled. The shank on a blank that is to be a cut thread will be full size from the fillet under the head to the end of the bolt. Thread cutting...
Image
Published: 01 August 2018
Fig. 12.48 Longitudinal cross section of the threaded region of M5 fasteners. (a) and (c) Rolled thread. (b) and (d) Machined (or cut) thread. The deformation of the “fibers” of the original material causes a large reduction of the fiber spacing close to the thread roots in the case of rolled More
Image
Published: 01 August 1999
Fig. 27 Top view (a) of cracked aluminum alloy 2024-T351 pitostatic connectors. Arrows indicate cracks. (b) Cross section of one connector showing elongated grains that were cut to form connector threads. 25 x . (c) Cross section showing intergranular cracking with multiple branching in one More
Image
Published: 01 August 2018
Fig. 12.49 Longitudinal cross section of a nut, close to the thread. The alignment of the structure, which is deformed, indicates that the central hole of the nut was made by punching (in the image, from right to left). Afterward, the thread was machined (cut). Etchant: nital. More
Image
Published: 01 July 2009
Fig. 21.7 Some basic operations performed on turning equipment. (a) Facing. (b) Straight turning. (c) Taper turning. (d) Grooving and cutoff. (e) Threading. (f) Tracer turning. (g) Drilling. (h) Reaming. (i) Boring. Cutting tool in black. Source: ASM 1989 More
Image
Published: 01 August 2018
Fig. 12.50 (a) Longitudinal cross section of a bolt machined from AISI 303 stainless steel, subjected to vibration testing. Fatigue cracks are present in the thread root. Large quantity of sulfides (nonmetallic inclusions), since this is a free cutting steel. The structure corresponds More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870307
EISBN: 978-1-62708-314-0
..., and heat damage. It is therefore important to minimize forces and heat generation during machining. During metallic machining, the chips help to remove much of the heat generated during the cutting operation. Because of the much lower thermal conductivity of the fibers (especially glass and aramid), heat...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740213
EISBN: 978-1-62708-308-9
..., milling, threading, and grooving; speeds up to 365 m/min (1200 sfm) are common. Ceramic Tools Ceramic tools are inherently more stable than carbide tools at high temperatures (high cutting speeds) but are less fracture resistant, so recent work has focused on improving their fracture toughness...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... thread Fatigue limit at 10 7 cycles, stress range, ksi 3.8 20 134 Ground 27.5 Rolled 48.0 87.5 Lath-cut 17.0 Rolled 28.5 ¾ 10 141 Ground 29.5 (28.0) (a) Rolled 62.5 (50.0) (a) 87.5 Lath-cut 18.0 (16.8) (a) Ground 16.5 Rolled 34.5 (28.0) (a) 2½ 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220403
EISBN: 978-1-62708-259-4
... Longitudinal cross section of the threaded region of M5 fasteners. (a) and (c) Rolled thread. (b) and (d) Machined (or cut) thread. The deformation of the “fibers” of the original material causes a large reduction of the fiber spacing close to the thread roots in the case of rolled threads. In (b), surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900163
EISBN: 978-1-62708-350-8
... on the painted steel surface. When the steel is heated to the process temperature, loose bristles on the surface will burn off and expose the steel immediately beneath. Nitriding will take place in the area of the burnt-out paint bristles, which can wreak havoc with cutting tools. Some stop-off paints...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... of these increase mold costs. Self-Threading Screws Self-threading screws are an economical means of securing separable joints in plastic. They can be either thread cutting or thread forming. To select the correct self-threading screw for a job, the designer must know which plastic will be used and its...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390456
EISBN: 978-1-62708-459-8
.... This chapter covers the mechanics and tribology of metal cutting processes. It discusses the factors that influence chip formation, including tool and process geometry, cutting forces and speeds, temperature, and stress distribution. It reviews the causes and effects of tool wear and explains how to predict...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250089
EISBN: 978-1-62708-345-4
... after cutting. First, the cutting tool can be threaded and gashed. If so, it is a hob, and the method of cutting is called hobbing. Second, when the cutting tool is shaped like a pinion or a section of a rack, it will be used in a cutting method called shaping. Third, in the milling process, the cutting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
... Features Figure CH28.1 shows the failed bolts. The new bolt that failed during fitment is marked No. 6. Bolts 1 to 5 showed similar features. The fractures were of the brittle type. The fracture origin was generally at the thread root. In all the bolts, the fracture surfaces were found...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250001
EISBN: 978-1-62708-345-4
... Nomenclature, Definitions of Terms with Symbols.” Fig. 1 Schematic of typical gear tooth nomenclature Gear cutting table showing various tooth dimensions for different diametral pitches of spur gears Table 1 Gear cutting table showing various tooth dimensions for different diametral pitches...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
..., “Corrosion,” in this book). Residues containing chlorides should not be present on titanium parts subjected to elevated temperature and stress. Therefore, chlorinated cleaning solvents and cutting oils should be avoided or used only if all residues are eliminated prior to a subsequent heating operation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250129
EISBN: 978-1-62708-345-4
..., and relatively low accuracy of transmitted motion ( Ref 1 ). When the application involves higher values of one or more of these characteristics, forged or cut/machined gears are used. Table 1 lists the tolerances in terms of American Gear Manufacturers Association (AGMA) quality numbers for various gear...