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Book Chapter
Countersinking, Counterboring, and Spotfacing
Available to PurchaseBook: 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 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...
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, and interchangeable countersinks. It provides a short description of the two types of spotfacing tools: back and double-end spotfacers and automatic back spotfacers. The article describes different types of counterboring tools, including interchangeable-pilot, integral-pilot, and interchangeable-cutter counterbores. It tabulates the nominal speeds and feeds for counterboring and spotfacing of carbon and low-alloy steels with high-speed steel and carbide tools.
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Published: 01 January 1989
Fig. 1 Five common types of countersinking tools. See text for discussion.
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Published: 01 January 2001
Fig. 11 Microstop cage for adjustable, controlled-depth countersinking
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Chatterless countersinks. (a) Standard chatterless countersink. (b) Chatter...
Available to PurchasePublished: 01 January 1989
Fig. 2 Chatterless countersinks. (a) Standard chatterless countersink. (b) Chatterless countersink with three main flutes and three intermediate flutes
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Book Chapter
Hole Drilling in Polymer-Matrix Composites
Available to PurchaseBook: Composites
Series: ASM Handbook Archive
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003426
EISBN: 978-1-62708-195-5
... 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 cutters...
Abstract
Good hole-drilling processes are key to joining composite parts with other composite parts or with metal parts. This article discusses the considerations for drilling polymer-matrix composites. It describes the use of power-feed drill motors and automated drilling/fastener 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 cutters. The article concludes with a discussion on inspection of hole quality.
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Free-cutting, chatterless countersinks with a single cutting edge. (a) Pilo...
Available to PurchasePublished: 01 January 1989
Fig. 3 Free-cutting, chatterless countersinks with a single cutting edge. (a) Pilotless. (b) Piloted. (c) Removable shank
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in Machining, Drilling, and Cutting of Polymer-Matrix Composites
> Engineered Materials Handbook Desk Edition
Published: 01 November 1995
Fig. 5 Spade drill/countersink. (a) Side view. (b) Front view
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Image
in Machining, Drilling, and Cutting of Polymer-Matrix Composites
> Engineered Materials Handbook Desk Edition
Published: 01 November 1995
Fig. 6 Point geometry of spade drill/countersink
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in Machining, Drilling, and Cutting of Polymer-Matrix Composites
> Engineered Materials Handbook Desk Edition
Published: 01 November 1995
Fig. 12 Optimal countersink drill for aramid composites
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Published: 01 January 2001
Fig. 10 Optimal countersink cutter for aramid fiber-reinforced composites
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Book Chapter
Blanking and Piercing
Available to PurchaseSeries: 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...
Abstract
This article begins with a discussion on the fundamentals of cutting. It focuses on blanking and piercing operations in a press tool to form and shape the final part geometry. The types of piercing operations include conventional piercing, piercing with a pointed punch, piece-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-forming operations, namely, rectangular blank, rough blank, partially developed blank, and fully developed blank. It concludes with a discussion on the process capabilities, applications, and limitations of fine-edge blanking and piercing.
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Schematic illustration of design parameters for beverage-can ends. CW, chuc...
Available to PurchasePublished: 01 January 2006
Fig. 61 Schematic illustration of design parameters for beverage-can ends. CW, chuck wall; CS, countersink
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Schematic of buckling failure of a thin sheet in a riveted joint. Countersi...
Available to PurchasePublished: 01 January 2002
Fig. 18 Schematic of buckling failure of a thin sheet in a riveted joint. Countersinking the top sheet formed a sharp edge at the faying surface.
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Schematic of buckling failure of a thin sheet in a riveted joint. Countersi...
Available to PurchasePublished: 30 August 2021
Fig. 18 Schematic of buckling failure of a thin sheet in a riveted joint. Countersinking the top sheet formed a sharp edge at the faying surface.
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Fastener pull-through design test plate configuration. Dimensions in inches...
Available to PurchasePublished: 01 January 2001
(a) Thickness dimensions represent standard design criteria that allow the countersink to penetrate a maximum depth equal to 70% of the sheet thickness.
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Book Chapter
Machining, Drilling, and Cutting of Polymer-Matrix Composites
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... 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 Spade drill/countersink. (a) Side view. (b) Front...
Abstract
This article describes the use of conventional machining techniques, laser cutting and water-jet cutting for producing finished composite parts. It explains two representative polymer-matrix composites--graphite and aramid composites--and discusses the machining and drilling problems such as delamination and fiber or resin pullout. The article describes machining and drilling techniques and the necessary tools and cutting parameters. It presents a description of laser cutting. The article also provides information on the advantages, disadvantages, cutting characteristics, and applications of water-jet cutting and abrasive water-jet cutting.
Book Chapter
Introduction to Post-Processing and Assembly
Available to PurchaseBook: Composites
Series: ASM Handbook Archive
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...
Abstract
This article provides a summary of the concepts discussed in the articles under the Section “Post-Processing and Assembly” ASM Handbook, Volume 21: Composites.
Book Chapter
Machining of Metal-Matrix Composites and Honeycomb Structures
Available to PurchaseBook: 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...
Abstract
This article presents general guidelines for machining metal matrix composites (MMC) and honeycomb structures. It provides guidelines for machining of specific MMCs, namely, aluminum-boron, aluminum-SiC, aluminum-Al 2 O 3 , and titanium-SiC MMCs. In addition, the article discusses the various parameters influencing drilling of dissimilar-material laminates.
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...
Abstract
This article provides a discussion on the design, in-process, storage, and in-field problems and their considerations associated with armament corrosion with examples. Design considerations include geometry, material selection, assembly, pretreatment, coatings, and working and storage environments. In-process corrosion concerns include processing locations, in-process storage of parts, time between processing steps, and quality control of each processing step. The article also discusses the analysis of the in-field corrosion of the finished product, including physical environments, repair of corrosion-protective coatings, general corrosion-protection maintenance, and appropriate fixes and procedures that can be implemented by soldiers in-field to stop continued corrosion of armament equipment.
Book Chapter
Machining, Trimming, and Routing of Polymer-Matrix Composites
Available to PurchaseBook: Composites
Series: ASM Handbook Archive
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003424
EISBN: 978-1-62708-195-5
... delaminations. Tool wear in all of these operations will cause delaminations and costly rework. Therefore, a thorough knowledge of the process and predictable tool life is extremely important to the end user. Ideally the surface produced by milling, routing, drilling, or countersink should be free...
Abstract
This article describes the machining operations of carbon fiber-reinforced epoxy, or carbon/epoxy thermoset composite materials, such as drilling, reaming, routing, trimming, end milling, slot milling, and facing. It reviews cutting tools for machining, including solid carbide, diamond plated, brazed diamond, diamond coated carbide, and polycrystalline cutting tools. The article also describes cutting tool materials that are used for peripheral milling, face milling, and the trimming of polymer-matrix composites.
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