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rake angle

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Published: 01 July 2009
Fig. 21.8 Terms applied to single-point turning tools. The side rake angle shown is positive. More
Image
Published: 01 January 2015
Fig. 13.7 Drill nomenclature and geometry for NAS 907 aircraft drills (type C illustrated) Drill elements Drill geometry code C D B E Notch rake angle, degrees 4–7 20 4–7 10 Helix angle, degrees 23–30 28–32 23–30 12 Clearance angle, degrees 10–14 6–9 10–14 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... or negative rake result in excessive edge cracking at the initiation or exit of a cut. Tools with larger clearance angles can improve metal removal but at a reduced tool life. Suggested tool geometries are given in Fig. 21.1 . Tools with multiple points, each with a modified geometry, have worked...
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
... performance testing rake angle tool life Chapters 8 to 12 were devoted to processes where fracture is undesirable – with the exception of the process of shearing – and the shape of the part is produced by plastic flow. Machining differs in that the material is intentionally separated and the shape...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480293
EISBN: 978-1-62708-318-8
... Tool angles of a milling cutter should be chosen to promote unhampered chip flow and immediate ejection of the chip. The controlling angles in this regard include the axial rake, radial rake, and corner angles. These angles should be chosen to provide a positive angle of inclination to lift the chip...
Image
Published: 01 July 2009
Fig. 21.1 Cutting tool designs used for beryllium and comparison of geometry with other metals Nomenclature Value (X°) for SS 304 Be Cast iron Nonferrous metal ab, back rake, deg 0 to (–7) +7 0 to –7 0 to 10 as, side rake, deg +6 to (–7) +5 +6 to –7 10 to 20 ϕs More
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
...). The lower blade is stationary, while the upper blade moves vertically to shear the part. The upper blade has a rake angle ( Fig. 1.22 , right) that lowers the instantaneous cutting force: (Eq 1.4) F = ( S × P × T 2 × 12 R ) ( 1 − P 2 ) where F is shear...
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
... movement between the cutting tool and workpiece. The thickness, t , often varies as cutting proceeds; however, to simplify the analysis, it is usually considered to be constant. The cutting tool is characterized by two angles: the rake angle, α, and the clearance (or relief) angle, γ. The relief angle...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120313
EISBN: 978-1-62708-269-3
... for most titanium drilling operations over the conventional chisel edge. Equipment is available for grinding the spiral point on any two-fluted, high-speed steel drill up to 50.8 mm (2 in.) diameter. Companies employing spiral-point drills report these type drills reduce the large negative rake angle...
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
... are sometimes used. Shaping tools with + 8° side rake, 0 to 3° back rake, 4 to 6° relief angle, and 0.045 to 0.060 in. (1.1 to 1.5 mm) nose radius are suitable for superalloys. Ram speeds must be slow; 7 to 13 sfm (2 to 4 m/min) is optimal, using a feed of 0.020 to 0.030 in./stroke (0.5 to 0.75 mm/stroke...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390007
EISBN: 978-1-62708-459-8
... locations of fracture. Also, the growth of microvoids in different stress states is apparently associated with the hydrostatic stress applied. This is consistent with the use of processes such as hydrostatic extrusion for difficult-to-form materials, or the use of small or negative rake angles in machining...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390241
EISBN: 978-1-62708-459-8
... friction is high. At yet higher angles the surface of the wire is shaved off; this is essentially a cutting process with a negative rake-angle tool (see Sec. 13.1.4 ). Such shaving is an important step in making wire free of surface defects inherited from the hot processing stages ( Sec. 9.3.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
... flowing across the metal surface after impinging upon the surface. This is characteristic of erosive wear, in which free particles strike the surface at an angle and then slide across the surface. Source: Ref 1 Fig. 2 Scanning electron microscope image of an area of abrasive wear on a soft...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400245
EISBN: 978-1-62708-258-7
.... It is used for detecting the effect of the object on plane-polarized light produced by the polarizer. angle of re ection. (1) Re ection: the angle between the re ected surface. See also normal. (2) Diffraction: the angle between the diffracted beam and the diffracting planes. angstrom unit. A unit of linear...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550223
EISBN: 978-1-62708-307-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... of a loose particle flowing across the metal surface after impinging upon the surface. This is characteristic of erosive wear, in which free particles strike the surface at an angle, then slide across the surface. Source: Ref 1 Abrasion is typically categorized according to types of contact, as well...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280041
EISBN: 978-1-62708-267-9
... is of greater density than the liquid in the region just above the liquidus (presumably alloys strengthened with niobium). Low-density freckle formation tends to take the form of vertical channels at slight angles to the longitudinal axis of the ingot. High-density freckle formation favors the formation...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370187
EISBN: 978-1-62708-447-5
... at the bottom. A refractory-lined receiving pan is provided at the bottom to collect the melted aluminum. Since the melting temperature of carbon steel is 1425 to 1540 °C (2600 to 2800 °F) and that of aluminum is about 660 °C (1221 °F), the aluminum melts first, leaving the steel screens to be raked and removed...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.9781627084475
EISBN: 978-1-62708-447-5