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Blade Terminology
HZaZXi^c\ i]Zg^\]i WaVYZ[dgi]Z XjigZfj^gZhVc
jcYZghiVcY^c\d[kVg^djhWaVYZX]VgVXiZg^hi^Xh#
Blade Terminology
A. Blade Size (Diameter): I]Z dkZgVaa Y^Vb"
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WaVYZh#
B. Pitch:I]ZY^hiVcXZ[gdbi]Zi^ed[dcZiddi]
idi]Zi^ed[i]ZcZmi#Ine^XVaan\^kZc^cIZZi]
EZg>cX]IE>
C. Gullet: I]Zh]VaadlVgZVWZilZZci]Zi^ehd[
i]ZiZZi]#
D. Front Rake Angle: I]ZbZVhjgZbZcid[i]Z
Vc\aZ [dgbZY WZilZZc i]Z i^e d[ i]Z WaVYZ
iddi]VcYV a^cZiVc\Zciidi]Z eZg^bZiZgd[
i]ZWaVYZ#
E. Rear Rake Angle:I]ZbZVhjgZbZcid[i]Z
Vc\aZ[dgbZYWZilZZci]Z[VXZd[ i]Ziddi]
VcYi]ZY^VbZiZg#
F. Tooth Depth: I]Z Y^hiVcXZ [gdb i]Z i^e d[
i]Ziddi]idi]ZWdiidbd[i]ZXdggZhedcY^c\
\jaaZi#
G. Kerf: I]Z l^Yi] d[ i]Z Xji XgZViZY Wn i]Z
WaVYZ#
Figure 16.7aVYZiZgb^cdad\n#
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D
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Blade Pitch
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hZXi^dch^oZVcYlVaai]^X`cZhhd[i]Zldg`e^ZXZ#
>[i]ZWaVYZe^iX]^hiddXdVghZ[dgi]ZXji!i]ZgZ
l^aaWZidd[ZliZZi]bV`^c\i]ZXjiViVcn\^kZc
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XjihYjZ idZmXZhh^kZhigV^c Veea^ZYidWdi] i]Z
WaVYZ VcY i]Z ldg`e^ZXZ Figure 17#JhZV
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ldg`e^ZXZViVcni^bZ#
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Xji!iZZi]l^aagZbV^c^ci]Zldg`e^ZXZVcYgZbdkZ
bdgZbViZg^Vai]Vci]ZWaVYZ\jaaZiXVc]daY#I]^h
Wj^aYje d[ X]^eh egZkZcih i]Z iZZi] [gdb Xjii^c\
Z[[ZXi^kZan VcY gZhjaih ^c eddg Xjii^c\ Z[[^X^ZcXn!
dkZg]ZVi^c\!VcYgVe^YangdjcYZY"d[[iZZi]FIgure
18#
Figure 17. TPI too coarse for workpiece.
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Figure 18. TPI too fine for workpiece.
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