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Blade Terminology
HZaZXi^c\ i]Zg^\]i WaVYZ [dgi]Z XjigZfj^gZh Vc
jcYZghiVcY^c\d[kVg^djhWaVYZX]VgVXiZg^hi^Xh#
Blade Terminology
A. Blade Size (Diameter): I]ZdkZgVaaY^VbZiZg
d[ i]Z WaVYZ# I]Z BdYZa <%+-' jhZh &'
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]VcY Va^cZ iVc\Zciid i]ZeZg^bZiZg d[
i]ZWaVYZ#
E. Rear Rake Angle:I]ZbZVhjgZbZcid[i]Z
Vc\aZ[dgbZYWZilZZc i]Z[VXZ d[i]Ziddi]
VcYi]ZY^VbZiZgd[i]ZWaVYZ#
F. Tooth Depth: I]ZY^hiVcXZ[gdbi]Zi^ed[i]Z
iddi]idi]ZWdiidbd[i]ZVY_VXZci\jaaZi#
G. Kerf: I]Z l^Yi] d[ i]Z Xji XgZViZY Wn i]Z
WaVYZ#
Figure 35.7aVYZiZgb^cdad\n#
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B
C
D
E
F
A
Blade Pitch
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^h ine^XVaan bZVhjgZY ^c iZZi] eZg ^cX] IE>#
EgdeZgIE>[dgVcnXjiYZeZcYhdci]ZXgdhh"
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
i^bZ#I]^hgZhjaih^cWgd`ZcWaVYZiZZi]VcYgdj\]
XjihYjZidZmXZhh^kZ higV^cVeea^ZY id Wdi]i]Z
WaVYZ VcY i]Z ldg`e^ZXZ Figure 36# JhZ V
WaVYZe^iX]i]Vi`ZZehViaZVhii]gZZiZZi]^ci]Z
ldg`e^ZXZViVcni^bZ#
8dckZghZan! ^[ i]Z WaVYZ e^iX] ^h idd [^cZ [dg i]Z
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
37#
Figure 36. TPI too coarse for workpiece.
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7aVYZ
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Figure 37. TPI too fine for workpiece.
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