Sharp 16 Series User manual

HIGH SPEED PRECISION LATHE
OPERATOR’S
& SPARE PARTS
MANUAL
For Models : 1640L, 1660L, 1860L, 1880L
Sharp Industries, Inc.
3501 Challenger Street
Torrance, CA 9050. USA
Tel [phone], Fax [phone]
16" & 18" Series

1
CONTENTS
PREFACE ...................................................................................................................................3
1. SHARPHIGH SPEED PRECISION LATHE
1-1 Machine Assembly........................................................................................................5
2. UNPACKING & MACHINE INSTALLATION
2-1 Unpacking.......................................................................................................................7
2-2 Lifting..............................................................................................................................7
2-3 Basic Foundation...........................................................................................................8
2-4 Cleaning..........................................................................................................................8
2-5 Leveling Adjustment.....................................................................................................8
3. ELECTRICAL CIRCUIT CONTROL
3-1 Electrical Wiring............................................................................................................9
3-2 Electrical Equipment.....................................................................................................9
3-3 Electrical Cautions.........................................................................................................9
4. TESTING & OPERATION
4-1 Operation Symbols........................................................................................................10
4-2 Transmission & Stop of Spindle..................................................................................11
4-3 Spindle Speed Selection ...............................................................................................11
4-4 Intermittent Operation of Spindle................................................................................12
4-5 The Importance and Methods of Spindle Leveling Adjustment..............................13
4-6 Transmission & Stop of Gear Box ..............................................................................14
4-7 Gear Box Operation ......................................................................................................14
4-8 Manual Operation..........................................................................................................14
4-9 Automatic Feeding Operation......................................................................................15
4-10 Automatic Feeding Stop Operation...........................................................................15
4-11 4 Position Automatic Feeding Stop Operation.........................................................15
4-12 Tailstock Operation .....................................................................................................16

2
CONTENTS
5. THREADING
5-1 Leadscrew Drive............................................................................................................17
5-2 Threading........................................................................................................................17
5-3 Thread Dial Indicator....................................................................................................17
5-4 Thread & Feed Chart.....................................................................................................19
5-5 Module & D.P. Thread Chart .......................................................................................22
6. LUBRICATION
6-1 Headstock Lubrication..................................................................................................24
6-2 Gear Box & Apron Lubrication ...................................................................................24
6-3 Lubrication Charts.........................................................................................................24
6-4 Lubrication Locations...................................................................................................25
7. MAINTENANCE & ADJUSTMENT
7-1 Headstock .......................................................................................................................26
7-2 Apron & Saddle .............................................................................................................27
7-3 Gear Box.........................................................................................................................28
7-4 Tailstock Center Line Adjustment...............................................................................28
7-5 Belt Tension Adjustment...............................................................................................29
7-6 Brake Belt Adjustment..................................................................................................29
7-7 Brake & Limit Switch Adjustment..............................................................................30
7-8 Leadscrew Backlash Adjustment.................................................................................30
7-9 Cutting Coolant Pump....................................................................................................30
8. TAPER ATTACHMENT..................................................................................................31

3
PREFACE
Thank you for choosing Sharp as your choice for a high precision lathe. We at
Sharp take pride in the workmanship, durability and precision of our machines.
Read this manual in its entirety in order to get the best possible results from the
machine and prolong its life, and become familiar with its operation, safety features
and recommended maintenance.
The 1 year warranty would be void if the machine was damaged due to improper
use or disregard to any operational instruction contained in this manual.
Some precautions to be taken not listed later in this manual are:
1. Do NOT install the machine in direct sunlight or directly in front of any
cooling system blowers.
2. Use only recommended lubricants.
3. Always keep machine clean.
4. Should the ways become damaged do not move the carriage until they have
been repaired.

4
Read the following instructions before operating the machine.
Only authorized personnel should work on this machine. Untrained personnel
present a hazard to themselves and the machine, and improper operation will
void the warranty.
Check for damaged parts and tools before operating the machine. Any part or
tool that is damaged should be properly repaired or replaced by authorized
personnel. Do not operate the machine if any component does not appear to be
functioning correctly.
Use appropriate eye and ear protection while operating the machine. ANSI-
approved impact safety goggles and OSHA-approved ear protection are
recommended to reduce the risks of sight damage and hearing loss.
The Emergency Stop button is the large, circular red switch located on the
Control Panel. Pressing the Emergency Stop button will instantly stop all motion
of the machine.
The electrical panel should be closed and the key and latches on the electrical
cabinet should be secured at all times except during installation and service. At
those times, only qualified electricians should have access to the panel. When the
main circuit breaker is on, there is high voltage throughout the electrical panel.
Once the machine is installed, the electrical cabinet must be locked and the key
available only to qualified service personnel.
DO NOT modify or alter this equipment in any way. If modifications are
necessary, all such requests must be handled by SHARP INDUSTRIES, INC.
Any unauthorized modification or alteration of any sharp MACHINES could
lead to personal injury and/or mechanical damage and will void your warranty

5
1. SHARPHIGH SPEED PRECISION LATHE
1-1 MachineAssembly

6
ITEM
DESCRIPTION
ITEM
DESCRIPTION
1
Spindle speed shifting lever
20
Carriage clamping lever
2
Spindle speed H/L shifting lever
21
Foundation adjusting bolt
3
Spindle speed shifting selection
lever
22
Spindle operation control rod
4
Forward/Reverse Shifting lever
23
4 position automatic feed stop
selection rod
5
Thread/Feed Selection lever
24
Leadscrew
6
Thread/Feed Shifting lever
25
Auto-feed rod
7
10-step feed selection dial
26
Tailstock set over adjusting Screw
8
Power source switch
(Main switch)
27
Tailstock body
9
Intermittent button
28
Tailstock handwheel
10
Coolant supply button
29
Tailstock body Clamping lever
11
Spindle operation control lever
30
Tailstock spindle locking lever
12
Adjustable trip dog
31
Rack
13
Longitudinal feed hand wheel
32
Compound rest handle
14
Cross slide handle
33
Coolant control valve
15
Trip plunger
34
Compound rest
16
Auto feeding engaged lever
35
Four way tool post
17
Foot brake pedal
36
Tool post clamping lever
18
Half nut engaged lever
37
Thread dial indicator
19
Feed axis selector

7
2. UNPACKING & MACHINE INSTALLATION
2-1 Unpacking
When the machine is arrived, first, check if the wooden case is damaged or not,
secondly, open the case and inspect the machine for any damage or short supply of
parts. If so, please contact our company or insurance company immediately in order
to get the best solution or refund; otherwise our company or the insurance company
will not be in the position to compensate for the damage.
2-2 Lifting
Please refer to figure 2-2 for machine unloading from the truck.
The steps of lifting the lathes are:
1. Clamp the bedways with a special made hanger, which consists of clamp and an
iron chain.
2. Raise the lathe a little bit with crane, then check if the lathe is balanced. If not,
move apron and cross slide back or forth to make the machine is balanced.
3. While the machine arrives at the location, put down the machine slowly to avoid
any inaccuracy of the machine caused by bumps or crash.
4. For adjusting the electrical cabinet, the machine should be located allowing
sufficient area, min. over 600mm from wall at back and tailstock end.
Fig.2-2

8
2-3 Basic Foundation
With the common usage of tungsten
carbide cutting tools nowadays, heavy cutting
and quicker spindle speed are therefore
reinforced. This may cause the vibration easily.
In order to keep the best cutting condition it is
necessary to build a sound & good floor basis.
(Please refer to figure 2-3 for basic structure.)
2-4 Cleaning
The machine is protected with a special anti-rust agent before delivery. Before
operating the machine, clean all parts, especially the slideways, leadscrew, rack and
all bright surfaces with soft brush/cloth soaked with cleaning solvent or kerosene. Do
NOT use gasoline or cellulose solvent to avoid dangers or fire or explosion. After
removing the anti-agent, keep the machine properly lubricated. Then turn the moving
mechanism like tool post, tailstock by hand back & forth within their moving areas.
2-5 LevelingAdjustment
Once the set screw and
concrete are completely dried and
fixed. It is time to adjust the level
of the bedway. A machinist's level
(accuracy 0.02mm/1000mm)
should be placed on the slideways
of bed. Adjust the set screw for
longitudinal direction of bed level.
For transverse direction of bed
level, tight the nuts until the
accuracy is within
0.04mm/1000mm. Then check
again. If the deviation is resulted
from the nuts, it is necessary to make
another adjustment. (See Figure 2-5)
UNIT-mm
Fig.2-3
Fig.2-5

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3. ELECTRICAL CIRCUIT CONTROL
3-1 Electrical Wiring
The electrical control box can be found by
opening its cover at the back side of bed.
Connect the power source wire with the
connecting points (R.S.T).
The wire between the power source and the
connecting points must be over sectional area
8mm2(5.5 mm2for 460 or 18”series).
The main switch between machine and
power source should be equipped with safety
fuse. Besides, the machine must have a earth
wire.
3-2 Electrical Equipment
1. The electrical control box is also equipped with overload circuit breaker and
electric magnetic contactor to protect motor from burning out by overload.
2. The main switch is connected with a micro switch.
3. The foot brake is connected with micro switch. Stepping the footbrake is quicker
to stop the lathe than turning off the switch. The spindle can only revolute again
by re-operating the spindle operation control lever using the foot brake.
4. The spindle will rotate continuously as long as the intermittent switch on the top
of the electrical panel is pressed.
3-3 Electrical Cautions
After wiring, check the rotation of the spindle. Turn the main switch “ON”and
make sure the safety of spindle. Then push intermittent button ○
Tmomentarily. The
correction direction of the spindle rotation is counter clockwise. (looking from
tailstock for a downward movement of the spindle operation control lever.) Wrong
direction of rotation can be rectified by interchanging any two of the three phase lines
(R.S.T.) in the power source.
Fig.3-1