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Using the Manual
Feed Handwheels
You can manually move the cutting tool around
the lathe/mill with the three handwheels shown
in Figure 30.
Compound
Rest
Handwheel
S
Figure 30. Carriage controls.
Longitudinal Handwheel
The longitudinal handwheel moves the carriage
left or right along the bed. This control is help-
ful when setting up the machine for turning or
when manual movement is desired during turning
operations.
Cross Slide Handwheel
The cross slide handwheel moves the top slide
toward and away from the work. Turning the dial
clockwise moves the slide toward the workpiece.
Compound Rest Handwheel
The compound rest handwheel controls the
position of the cutting tool relative to the
workpiece. The graduated dial is adjustable
using the same method as the dial on the
cross slide. Angle adjustment is held by two
hex nuts on the base of the compound rest.
G0492 12" X 36" Combo Lathe/Mill
Cross Slide
Handwheel
Longitudinal
Handwheel
Setting the Spindle
RPM
To determine and set the needed spindle
RPM for cutting:
1.
Use the table in Figure 31 to determine the
cutting speed required for the workpiece
material.
Cutting Speeds for High Speed Steel
(HSS) Cutting Tools
Workpiece Material
Aluminum & alloys
Brass & Bronze
Copper
Cast Iron, soft
Cast Iron, hard
Mild Steel
Cast Steel
Alloy Steel, hard
Tool Steel
Stainless Steel
Titanium
Plastics
Wood
Note: For carbide cutting tools, double the
cutting speed. These values are a guide-
line only. Refer to the MACHINERY'S
HANDBOOK for more detailed informa-
tion.
Figure 31. Cutting speed table for HSS cutting
tools.
Failure to follow RPM and feed rate guide-
lines may threaten operator safety from
ejected parts or broken tools.
Cutting Speed
(sfm)
300
150
100
80
50
90
80
40
50
60
50
300-800
300-500
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