Grizzly G4791 Lathe User Manual


 
<),.&&'m(.AVg\Z8dbWdAVi]Z$B^aa
"'("
Setting Mill Speed
I]ZgZ VgZ c^cZ b^aa he^cYaZ heZZYh VkV^aVWaZ Wn
Xdc[^\jg^c\i]ZK"WZaihjcYZgi]Zb^aaYg^kZhnhiZb
XdkZg#
IdhZaZXii]ZXdggZXihe^cYaZheZZYGEB[dgndjg
b^aa^c\ deZgVi^dc! ndj l^aa cZZY id/ & 9ZiZgb^cZ
i]Z he^cYaZ heZZY cZZYZY [dg ndjg ldg`e^ZXZ
bViZg^Va!VcY'Xdc[^\jgZi]ZK"WZaih[dgi]ZXVa"
XjaViZYheZZY#
Calculating Mill Spindle Speed
1. JhZi]ZiVWaZ^cFigure 19idYZiZgb^cZi]Z
Xjii^c\ heZZY gZfj^gZY [dg ndjg ldg`e^ZXZ
bViZg^Va#
Note: Cutting speed is the rotational speed
that the cutter moves over/into the workpiece,
and is expressed in surface feet per minute
(SFM).
Cutting Speeds for High Speed Steel (HSS)
Cutting Tools
Ldg`e^ZXZBViZg^Va 8jii^c\HeZZYH;B
6ajb^cjbVaadnh (%%
7gVhh7gdcoZ &*%
8deeZg &%%
8Vhi>gdc!hd[i -%
8Vhi>gdc!]VgY *%
B^aYHiZZa .%
8VhiHiZZa -%
6aadnHiZZa!]VgY )%
IddaHiZZa *%
HiV^caZhhHiZZa +%
I^iVc^jb *%
EaVhi^Xh (%%"-%%
LddY (%%"*%%
Note: For carbide cutting tools, double the cutting
speed. These values are a guideline only. Refer to
the MACHINERY'S HANDBOOK for more detailed
information.
Figure 19.8jii^c\heZZYiVWaZ[dg=HHXjii^c\
iddah#
2. BZVhjgZi]ZY^VbZiZgd[ ndjgXjii^c\idda^c
^cX]Zh#
3. JhZ i]Z [daadl^c\ [dgbjaV id XVaXjaViZ i]Z
gZfj^gZYhe^cYaZheZZYGEB[dgndjgdeZgV"
i^dc/
Configuring Mill V-Belts
1. 9>H8DCC:8IB68=>C:;GDBEDL:G
2. GZbdkZ i]Z VXdgc cjih VcY [aVi lVh]Zgh
hZXjg^c\ i]Z b^aa Yg^kZ hnhiZb XdkZg! i]Zc
gZbdkZi]ZXdkZghZZFigure 20#
The moving V-belts and pulleys of the mill
drive system represent a severe entangle-
ment hazard and can cause serious per-
sonal injury. ALWAYS have the mill drive
system cover in place when the machine is
connected to power.
Figure 20.B^aaYg^kZhnhiZbXdkZggZbdkZY
Zmedh^c\K"WZaihVcYejaaZnh#
BdidgEjaaZn
>YaZgEjaaZn
He^cYaZEjaaZn