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countersinking

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Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002137
EISBN: 978-1-62708-188-7
...Abstract Abstract Countersinking, counterboring, and spotfacing operations can be carried out on drilling machines and usually follow drilling operations. This article discusses five common types of countersinking tools or countersinks, namely, machine, three-flute, single-flute, insert-type...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003426
EISBN: 978-1-62708-195-5
... installation equipment. The article provides a discussion on reaming, countersinking, and three recommended choices of cutting tools for producing a countersink in carbon/epoxy structure. The cutting tools include: standard carbide insert cutters, solid carbide cutters, or polycrystalline diamond (PCD) insert...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
...-and-extrude operations, slotting, countersinking, and cutting and lancing of tabs. The article provides information on the punch assembly, the die assembly, and the stripper and discusses the factors considered during piercing operations. It reviews the applications of the four types of blanks used in sheet...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... completion dates. Therefore, a unique drill point geometry having an integral countersink was designed, fabricated, and evaluated to eliminate the need for a material backup. The drill, known as a spade drill/countersink, is shown in Fig. 5 , while the point geometry is shown in Fig. 6 . Fig. 5...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002194
EISBN: 978-1-62708-188-7
... are usually needed to prevent overheating of the blade and to prevent matrix metal pickup. However, carbide blades can be used for discontinuous MMCs with low fiber content. Diamond grit grinding bits are suggested for the profile milling, chamfering, drilling, and countersinking of continuous MMCs, using...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004123
EISBN: 978-1-62708-184-9
... 2 in.) and 16 mm ( 5 8 in.) mounting bolts used to secure the ring gear to the upper and lower carriage, when proper torque is applied, produce 110 and 172 MPa (16 and 25 ksi) sustained tensile loads, respectively, at the countersink. This load is sufficient to produce SCC...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003424
EISBN: 978-1-62708-195-5
..., drilling, or countersink should be free of delaminations, as shown in Fig. 3 . This carbon/epoxy sample had three machining operations performed–drilling, countersinking and milling of the top surface. Fig. 3 Typical machined surface of carbon/epoxy composite Face Milling...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003423
EISBN: 978-1-62708-195-5
..., drilling techniques (manual, power feed, and automated), reaming and countersinking operations, and hole-quality considerations. The article on mechanical fastener selection and installation covers fastener types and considerations, different types of fits, and special fasteners, such as blind fasteners...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003987
EISBN: 978-1-62708-185-6
...-production parts in a variety of products. Countersinks for screw heads and offsets for mating parts are regularly produced by coining. Often, one piece will have several mounting or assembly details coined into its face, as in Example 4 . Example 4: Assembly and Mounting Details Coined into a Mounting...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003427
EISBN: 978-1-62708-195-5
... a fastener area-current relationship to predict whether a fastener has a large enough countersink and diameter to dissipate lightning-strike currents without arc plasma blowby. Although Ref 7 was directed more toward fuel environment, the method can also be used to minimize damage to the composite from...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003138
EISBN: 978-1-62708-199-3
Book Chapter

Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005555
EISBN: 978-1-62708-174-0
... for counterbore and countersink weld flash clearance Table 4 Dimensions for counterbore and countersink weld flash clearance A, B, and C are shown in Fig. 9 . Stud base diameter Counterbore 90°countersink A B C mm in. mm in. mm in. mm in. 6.4 1 4 11.1 0.437 3.2...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001360
EISBN: 978-1-62708-173-3
... areas of nonfusion on its vertical leg or shrink fissures, which have no adverse affect on weld strength or ductility ( Ref 4 ). Consequently, it is not subject to the profile and inspection criteria used for a conventional weld fillet. Dimensions for counterbore and countersink weld flash clearance...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002486
EISBN: 978-1-62708-194-8
... Simple steps or level changes not exceeding 15% of the overall part height ( H ) ( Fig. 6 ) can be formed by face contours in the punches. A draft of 5° or more is needed to release this contour from the punch face during ejection. Features such as countersinks and counterbores can be similarly formed...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005653
EISBN: 978-1-62708-198-6
.... There is an increasing complexity in designs being developed where multiple screw-countersink combinations, rod-set screw designs and other crevicelike and restricted environments are developed. Here, restricted means locations where small volumes of fluid can be relatively isolated from the bulk solution environment...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004206
EISBN: 978-1-62708-184-9
... are being explored, alone and in combination, due to the current understanding of each material's behavior and interaction with the biological system. There is an increasing complexity in designs being developed where multiple screw-countersink combinations, rod-set screw designs and other crevicelike...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002116
EISBN: 978-1-62708-188-7
..., countersinking) Sawing (filing) Abrasive machining (grinding, honing, lapping) Broaching (internal and surface) Processes can be combined into multiple-capability machines, known as machining centers. The machining center shown in Fig. 2 is capable of performing the machining processes normally...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003433
EISBN: 978-1-62708-195-5
... and countersinking of the composite material, which necessitate attention to quality issues such as delamination around holes and hole surface quality. The continued use of complex and costly “old school” assembly tooling and fixturing technology further complicates quality assurance of assembly operations. However...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002135
EISBN: 978-1-62708-188-7
... Type of machine used to rotate the drill or the workpiece Whether the drill is used for originating or enlarging holes Tolerances on the hole to be drilled Whether related operations, such as countersinking or spotfacing, must be performed with drilling Cost Material Drilled...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003425
EISBN: 978-1-62708-195-5
... of individual components is still the prevalent means of creating complex assemblies. Mechanical fastening is a well understood and predictable way to join, but it involves undesirable drilling, and in some cases, countersinking operations, which are costly, cut continuous fibers, create stress concentrations...