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trepanning

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Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002131
EISBN: 978-1-62708-188-7
... Abstract Trepanning is used in at least four distinct production applications: round disks, large shallow through holes, circular grooves, and deep holes. This article provides an overview of the first three applications. It describes the machines, tools, techniques, and cutting fluids used...
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Published: 01 January 1989
Fig. 1 Drill-mounted adjustable fly cutter used for trepanning various sizes of disks from flat stock, or grooves around centers More
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Published: 01 January 1989
Fig. 2 Shallow holes produced by trepanning in aircraft gear shown at top left. Top-brazed carbide inserts cut only 40% as many holes per grind as side-brazed inserts. More
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Published: 01 January 1989
Fig. 4 Tool used in trepanning operation (shown at top left and bottom). The part is shown at top right. Dimensions given in inches More
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Published: 01 January 1989
Fig. 5 Engine lathe setup for trepanning deep holes More
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Published: 01 January 1989
Fig. 6 Two types of single-cutter trepanning heads More
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Published: 01 January 1989
Fig. 7 Starting tool for trepanning More
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Published: 01 January 1989
Fig. 8 Typical design of a trepanning cutter for producing deep holes. Dimensions given in inches More
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Published: 01 January 1989
Fig. 9 Three-cutter trepanning head used for cutting a 64 mm (2 1 2 in.) diam hole through a solid cylinder of 8615 steel. Dimensions given in inches More
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002168
EISBN: 978-1-62708-188-7
... lasers. It discusses the operating parameters of concern in percussion drilling and trepanning. The process variables in surface treatment and laser cutting, as well as the operating parameters of concern in laser welding are reviewed. The article also explains the various categories of surface treatment...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002190
EISBN: 978-1-62708-188-7
... Abstract This article describes various machining techniques of refractory metals, namely, niobium, molybdenum, tantalum, and tungsten. These include turning, boring, trepanning, reaming, milling, tapping, drilling, and sawing. Parameters for the machining of the refractory metals are also...
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Published: 01 January 1989
Fig. 10 Recommended coolant pressures (a) and volumes (b) for multiple-cutter internal chip removal trepanning tools More
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Published: 01 January 1989
Fig. 17 Two types of straight-flute gun drills used in deep-hole drilling. (a) Trepanning drill. (b) Center-cut drill More
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Published: 31 October 2011
Fig. 24 Schematic representations of laser-drilling techniques. (a) Single-shot drilling. (b) Percussion drilling. (c) Trepanning drilling. (d) Helical drilling. Courtesy of Trumpf Inc. More
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Published: 01 November 1995
Fig. 16 Gas-assisted laser cutting of holes in 19 mm (0.75 in.) thick birch plywood with fixed cutting head, using trepanning technique. The nozzle, which appears to be touching the workpiece, is actually 1 mm (0.04 in.) above it. More
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Published: 01 January 1989
Fig. 3 Methods of piloting or supporting boring tools to maintain alignment. (a) Pack head type of pilot. (b) Wear-pad support of trepanning head used for boring large diameter holes from solid stock. (c) Piloted head capable of using several cutting edges. (d) Bushing mounted on auxiliary More
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Published: 01 January 1989
and leave an embossment. (g) Double-wall trepanning tool; entire wall is insulated. A single-wall tool can be used, with electrolyte entering on one side and leaving on the other side, but flow rates must be high and control is less precise. Special types are available for slug cutoff. Oddly-shaped More
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003978
EISBN: 978-1-62708-185-6
... by punching from both sides ( Example 5 ). Relatively deep holes can be produced by punching from both sides until only a thin center section remains. Hot Trepanning Hot trepanning is done to produce a hole through the center of a large cross section, large-mass workpiece. A circular cutter having...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003189
EISBN: 978-1-62708-199-3
...)   30–60 mm (1.18–2.38 in.) diam 250–492 L/min (66–130 gal/min) Trepanning: Fine filtration required. Use higher flow rates for deeper holes and the largest diameters in each range. If an emulsion is used instead of oil, increase the flow rate.  External chip removal heads:   51–89 mm (2...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005618
EISBN: 978-1-62708-174-0