Page 5 - machining_titanium_05_2019

SYMBOLS AND UNITS*

The guide utilizes metric units and their equivalent US customary units as well.
As a rule, the latter are put in brackets and follow metric measurements.

AE angle of engagement,
a machining allowance (stock to be removed) per pass, mm (in)
ae width (radial depth) of cut, mm (in)
ap axial depth of cut, mm (in)
apmax maximum axial depth of cut, mm (in) TOOLS FOR MACHINING TITANIUM
c ratio of width of cut ae to nominal tool diameter d
d nominal tool diameter, mm (in)
de effective diameter, mm (in)
f feed, mm/rev (IPR, ipr, inches per revolution)
fz feed per tooth (chip load), mm/tooth (IPT, ipt, inches per tooth)
fzo basic (initial) feed, (chip load), mm/tooth (IPT, ipt, inches per tooth)
fzmin minimum feed per tooth (chip load), mm/tooth (IPT, ipt, inches per tooth)
fzmax maximum feed per tooth (chip load), mm/tooth (IPT, ipt, inches per tooth)
fzav arithmetic average feed per tooth (chip load), mm/tooth (IPT, ipt, inches per tooth)
hm average chip thickness, mm (in)
hmax maximum chip thickness, mm (in)
Ke engagement factor
Kf tooth strength factor
Kh overhang factor
Km machinability factor
Ks stability factor
n rotational velocity (spindle speed), rpm (rpm)
Q metal removal rate (MRR), cm³/min (in³/min)
Vo basic cutting speed, m/min (SFM, sfm)
Vc cutting speed, m/min (SFM, sfm)
Vf feed speed (feed rate), mm/min (IPM, ipm, inch per minute)
VHP cutting speed in machining with high pressure coolant, m/min (SFM, sfm)
αr ramping angle
χ cutting edge (entering) angle

* in metric system (US customary units are given in brackets)

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