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TABLE OF CONTENTS
General Safety Instructions................................................................................................. 3
Specific Safety Instructions ................................................................................................. 4
Features .............................................................................................................................. 5
Physical Features................................................................................................................ 6
Set-Up ................................................................................................................................. 7
Un-Packing & Inventory ...................................................................................................... 7
Proper Grounding................................................................................................................ 8
Chuck .................................................................................................................................. 9
Steady Rest......................................................................................................................... 9
Follow Rest ......................................................................................................................... 10
Lathe Bed............................................................................................................................ 10
Headstock ........................................................................................................................... 10
Gearbox .............................................................................................................................. 11
Headstock Controls............................................................................................................. 11
Apron................................................................................................................................... 12
Saddle ................................................................................................................................. 12
Carriage Controls ................................................................................................................ 12
Lead Screw & Feed Screw.................................................................................................. 13
Tailstock .............................................................................................................................. 14
Tailstock Controls................................................................................................................ 14
Test Run.............................................................................................................................. 15
Speed Change .................................................................................................................... 16
Longitudinal Turning with Auto-Feed .................................................................................. 17
Manual Longitudinal Turning............................................................................................... 17
Facing and Recesses.......................................................................................................... 17
Turning Between Centers ................................................................................................... 18
Thread Cutting .................................................................................................................... 18
Change Gears Replacement............................................................................................... 19
Cross Slide Gib Screws Adjustment ................................................................................... 19
Top Slide Gib Screws Adjustment....................................................................................... 20
Chuck Run-out .................................................................................................................... 20
Headstock & Tailstock Alignment........................................................................................ 21
Main Spindle Bearings ........................................................................................................ 22
Lubrication........................................................................................................................... 22
Gearbox .............................................................................................................................. 22
Change Gears..................................................................................................................... 23
Saddle ................................................................................................................................. 23
Cross Slide.......................................................................................................................... 23
Cross Slide Hand Wheel ..................................................................................................... 23
Lead Screw ......................................................................................................................... 24
Tailstock .............................................................................................................................. 24
Maintenance........................................................................................................................ 24
Optional Chip Tray & Stand ................................................................................................ 25
Electrical Connections & Wiring Diagram ........................................................................... 26
Threading & Feed Table for CX701 .................................................................................... 27
Troubleshooting .................................................................................................................. 28
Parts Breakdown & Parts List ............................................................................................. 29
Warranty.............................................................................................................................. 46
2
GENERAL SAFETY INSTRUCTIONS
FOR MACHINES
Extreme caution should be used when operating all power tools. Know your power
tool, be familiar with its operation, read through the user manual and practice safe
usage procedures at all times.
ALWAYS read and understand the
user manual before operating the
machine.
CONNECT your machine ONLY to the
matched and specific power source.
ALWAYS
wear
safety
glasses
respirators, hearing protection and
safety shoes, when operating your
machine.
DO NOT wear loose clothing or
jewelry when operating your machine.
A
SAFE
ENVIRONMENT
is
important. Keep the area free of dust,
dirt and other debris in the immediate
vicinity of your machine.
BE ALERT! DO NOT use prescription
or other drugs that may affect your
ability or judgment to safely operate
your machine.
DISCONNECT the power source when
changing drill bits, hollow chisels,
router bits, shaper heads, blades,
knives, or making other adjustments or
repairs.
NEVER leave a tool unattended while it
is in operation.
NEVER reach over the machine when
the tool is in operation.
ALWAYS keep blades, knives and bits
sharpened and properly aligned.
ALL
OPERATIONS
MUST
BE
performed with the guards in place to
ensure safety.
ALWAYS use push sticks and feather
boards to safely feed your work through
the machine and clamp the work-piece
(when necessary) to prevent the workpiece from any unexpected movement.
ALWAYS make sure that any tools used
for adjustments are removed before
operating the machine.
ALWAYS keep the bystanders safely
away while the machine is in operation.
NEVER attempt to remove jammed
cutoff pieces until the saw blade has
come to a full stop.
3
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GEARBOX
The gearbox is located on the left side of
the lathe and is mounted on the bed. It is
used to select the feeds for straight turning
as well as for thread cutting. In order to
achieve certain thread pitches, it is
necessary to replace the change gears.
The torque of the work spindle is
transmitted to the feed gears and thus to
the lead screw.
FORWARD / REVERSE SWITCH: After the
machine is switched ON, turn the switch to
“F” position for counter-clockwise spindle
rotation (forward).
Turn the switch to “R” position for clockwise
spindle rotation (Reverse).
Turning the switch to “0” position the
spindle remains idle.
Figure-9 Gearbox
Figure-11 Forward / Reverse switch
HEAD STOCK CONTROLS
EMERGENCY ON/OFF BUTTON: The
On/Off button allows to start and stop the
machine.
FEED RATE SELECTOR KNOB: Use the
feed rate selector knob to set the desired
feed or thread rates. See figure-12.
FEED THREAD SELECTOR KNOB: For
thread selecting, shift the knob to the left
and for feed selecting, shift the knob to the
right. See figure-12.
FEED DIRECTION SELECTOR KNOB:
Select the carriage travel direction when the
chuck is rotating in the forward direction or
counter-clockwise as viewed from the front
of the chuck.
Figure-10 Emergency ON/OFF button
11
SADDLE
The saddle is made from high quality cast
iron and all sliding parts are smoothly
ground to fit the V on the bed without play.
Figure-12 Gearbox controls
VARIABLE SPEED CONTROL KNOB:
Turn the knob clockwise to increase the
spindle speed and counter-clockwise to
decrease the spindle speed. The possible
speed range is dependent on the position of
the drive belt. See figure-13.
Figure-14 Saddle and apron
CARRIAGE CONTROLS
The carriage allows the cutting tool to move
along the length of the lathe bed .The cross
slide allows the cutting tool to travel
perpendicular to the bed. The carriage
features a top slide which allows linear
movement of the cutting tool at any preset
angle .This section will review the individual
controls on the carriage and provide
descriptions of their uses.
Figure-13 Variable speed control knob
APRON
The apron is mounted to the saddle and to
the front side of the bed and it houses the
half nut with an engaging lever for
activating the automatic feed. The half nut
gibs can be adjusted from the outside.
LONGITUDINAL TRAVEL HAND WHEEL:
Turning the longitudinal hand wheel, moves
the carriage left or right along the bed .The
control is helpful when setting up the
machine for turning, when manual
movement is desired during turning
operations. See figure-15.
CROSS SLIDE HAND WHEEL: Turning
the cross slide hand wheel, moves the
cross slide towards or away from the workpiece. The graduated scale can be adjusted
12
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TEST RUN
Once you have assembled your lathe
completely, it is then time for a test run to
make sure that the lathe works properly and
is ready for operation.
Remove all the tools used for assembling
the machine and make sure all the guards
are in place.
WARNING
Before starting the lathe, make sure that
you have read and understood the
manual and you are familiar with the
functions and safety features on this
machine. Failure to do so may cause
serious personal injury.
To ensure the carriage controls do not
move unexpectedly when the lathe is
started, rotate the feed direction selector
knob so that the arrow is pointing to the
middle (neutral) position as shown in figure21.
While test running the machine, check the
following:
The Emergency Stop & ON/OFF buttons
are working properly.
The chuck and jaws are properly secured
and working properly.
While the machine is running, turn the
variable speed control knob clockwise to
make sure it is working properly.
Let the machine run for 10 minutes at the
Low Speed.
During the test run if there is any unusual
noise coming from the lathe or it vibrates
excessively, turn OFF the power switch
immediately and disconnect from the power
source Investigate if you can find out the
problem with your machine. See page-28
for troubleshooting.
If the machine is running smoothly, proceed
to the next step.
Change the belt for High Speed and let the
machine run for another 10 minutes. See
page-16 for details on speed change.
Turn the machine OFF and turn the
Forward/Reverse switch to “R” position.
Turn the machine back ON and make sure
the spindle is rotating clockwise (reverse).
Figure-21 Feed direction selector knob
Connect the cord to the power outlet and
turn the machine ON.
WARNING
Do not make any adjustments while the
machine is running. Failure to follow this
warning can cause serious personal
injuries to the operator and damage to the
machine.
15
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TURNING BETWEEN
CENTERS
For turning between centers, it is necessary
to remove the chuck from the spindle. Fit
the MT3 center into the 5/3 reducing sleeve
(provided) and fit the reducing sleeve into
the spindle taper.
Mount the work-piece fitted with the driver
dog between the centers. The driver is
driven by a catch or face plate. See figure29.
IMPERIAL THREAD: When cutting inch
threads, the half nut and threading dial are
used to thread in a conventional manner.
The threading and feeding table on page-27
or on the headstock, specifies at which
point a thread can be entered using the
threading dial.
METRIC THREAD: The only difference in
metric thread cutting is that the half nut
must remain engaged during the entire
threading process. The thread dial can not
be utilized.
Figure-30 Half nut and threading dial
Figure-29 Turning between centers
Set the machine up for the desired thread
pitch.
IMPORTANT
Always use a small amount of grease on
the tailstock center to prevent center tip
from over heating.
Start the machine and engage the half nut.
When the tool reaches the end of the cut,
stop the machine by turning the motor off
and at the same time back the tool out off
the work-piece so that it clears the thread.
Do not disengage the half nut lever.
THREAD CUTTING
Several different threads can be cut using
the proper combination of gears and
settings.
Reverse the motor direction allowing the
cutting tool to traverse back to the starting
point.
Repeat these steps until you have obtained
results.
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The finished diameter of the shoulder
should be 0.025mm larger than the
diameter of the recess in the chuck. This is
a critical step in minimizing chuck run-out.
Re-install the chuck and check for run-out.
HEADSTOCK &
TAILSTOCK ALIGNMENT
The headstock and tailstock alignment has
been adjusted properly in the factory before
the machine is shipped to you. However,
after lengthy operation, the headstock and
tailstock may be out of alignment.
To check the centers alignment:
Figure-37 Stock thicker at the tailstock end
If the stock is thinner at the tailstock end,
the tailstock needs to be moved away from
you to the amount of taper. See figure-38.
Center drill a 150mm piece of bar stock on
one end and position it between the
headstock and tailstock as shown in figure36.
Figure-38 Stock thinner at the tailstock end
Figure-36 checking headstock and tailstock
alignment
TO MOVE THE TAILSTOCK:
Turn approximately 0.025mm off diameter.
Make sure the switch is in the OFF position
and the cord is disconnected from the
power outlet.
Measure the stock with a micrometer. If the
stock is thicker at the tailstock end, the
tailstock needs to be moved towards you to
the amount of taper. See figure-37.
Adjust the tailstock offset to the amount by
turning the adjustment screw shown in
figure-39.
21
Re-tighten the two hex socket cap screws.
CAUTION
Make sure not to tighten the hex socket
cap screws excessively or it will damage
the bearing.
Figure-39 Tailstock offset adjustment screw
Turn another 0.5mm off the stock and
check for taper. Repeat this procedure until
the tailstock is aligned with the headstock.
MAIN SPINDLE BEARINGS
The main spindle bearings are adjusted at
the factory. If end play becomes evident
after considerable use, the bearings may be
adjusted.
Loosen two hex socket cap screws in the
slotted nut shown in figure-40. Tighten
slotted nut until all end play is taken up. The
spindle should still revolve freely.
Figure-40 Main spindle bearing adjustment
LUBRICATION
Lubricate all slide-ways lightly before every
use with 20W oil.
WARNING
Lathe must be serviced at all lubrication
points and all reservoirs filled to
operating level, before the lathe is
placed into service. Failure to comply
may cause serious damage.
GEARBOX
Oil must be up to the indicator mark in the
oil sight glass as shown in figure-41. Top off
with Mobilgear 627 or equivalent. Fill by
pulling the plug shown in figure-41.
Figure-41 Gear box oil sight glass & fill plug
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ELECTRICAL
CONNECTIONS
The Variable Speed Lathe is rated
at 1.5-Horse Power, Single Phase, 110-Volt
and 12.3 Amps. Use the wiring diagram for
connecting the lathe to the main supply.
Make sure the lathe is properly grounded.
See page-8 for details.
WARNING
Connection of the lathe and all other
electrical work may only be carried out
by an authorized electrician. Failure to
comply may cause serious injury and
damage
to
the
machinery
and
surroundings.
WIRING DIAGRAM FOR PM-1127VF-LB
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3. Function of carriage
2. Function of cross slide
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12. Function of motor
11. Spindle safety cover
10. Function of speed readout
9. Electrical control board
8. Speed control knob
7. Emergency stop switch
6. Function of F/R switch
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4. Insulation resistance
3. Earth resistance
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Date
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