ANTS 330A User manual

ANTS MACHINE EQUIPMENT
Horizontal Automatic Band Saw Machine
Model: 330A
O p e ra t i o n M a n u a l
SHANGHAI ANTS MACHINE EQUIPMENT CO.,LTD
Shanghai, China

ANTS MACHINE EQUIPMENT
1
Safety Notes
Please read the manual before hoisting, installation and operation of this machine. Use this
machine only after being familiar with the performance, safety information and related
precautions of it.
Improve safety awareness, follow safe operation regulations, and always pay attention
to the occurrence of danger. To prevent tilting, please pay attention to the center of
gravity when hoisting, otherwise accidental danger may occur.
When unpacking the machine, be careful of the board, nails and other objects hurting
people.
When the machine is installed, the circuit must have a good and reliable grounding
device, otherwise there will be electric shock or more serious injury.
The user must supply power according to the power supply parameters specified in the
"Operation Manual" to prevent damage to the machine.
It is strictly forbidden to start using the machine tool before debugging.
This sawing machine is only suitable for cutting general metal materials. Please do not
use it for cutting agricultural and fishery products, wood, food, combustible materials,
and metals containing radiation.
It is strictly forbidden to remove warning signs or explanatory signs from the machine.
Prohibit overloaded-working of the machine.
Do not change the wiring and wiring in the safety device casually to make it
voltage-generating, self-locking, overloading, or arbitrary power-off. These safety
devices can protect the safety of the machine and the operator, but changing the wiring
will destroy its original functions.
The operator must operate the machine in a healthy state and must undergo relevant
training.
The operator must cover all protective covers before running the machine. Adjust the
adjustable protective cover of the band saw blade as close to the workpiece as possible.
When the machine tool is running, do not open all kinds of protective covers.
Please use safety protection products: safety glasses, gloves, safety work shoes.

ANTS MACHINE EQUIPMENT
2
Do not put any tools on the machine. Put the tools back into the tool box after use. And
do not put tools or workpieces around the machine to avoid danger.
The workpiece must be completely fastened on the workbench, otherwise there may be
danger.
It is strictly forbidden to reach into the machine working area.
The machine must stop when changing the line speed.
When the safety cover on the sawing machine is opened, the machine must be shut
down.
When loading, unloading or replacing the saw blade and steel brush, the operator must
stop the machine and wear safety gloves to operate.
When the machine is running, it is strictly prohibited to open any protective cover or
touch the saw blade.
When changing the belt, the operator must stop the machine and then open the motor
cover to change it.
When choosing saw blade, blade line speed and cooling water, please refer to the
instruction manual or related regulations.
Please keep the machine clean and remove iron filings and oil stains from the machine.
Non-professionals are not allowed to carry out maintenance or maintenance work
related to the machine. Power supply must be cut off before maintenance.
The coolant is harmful to the human body, and the operator should pay attention to it
when cleaning or discharging. Coolant should not be discharged directly into the ground,
and should be disposed of in accordance with environmental protection regulations.
Environment conditions for using this machine: altitude <1000m;
Ambient temperature: 0-40°C; BS: <85%

ANTS MACHINE EQUIPMENT
3
Content
Chapter 1 Introductions....................................................................................................................................4
1.1 Characteristics and usages................................................................................................................. 4
1.2 Pressure setup and values.................................................................................................................. 4
Chapter 2 Instructions...................................................................................................................................... 7
2.1 Saw blade replacement...................................................................................................................... 7
Chapter 3 Maintenance and Lubrication..........................................................................................................9
3.1 Daily maintenance.............................................................................................................................. 9
3.2 Weekly maintenance.......................................................................................................................... 9
3.3 Maintenance every six months.......................................................................................................... 9
3.4 Annual maintenance.........................................................................................................................10
3.5 Lubrication system............................................................................................................................11
Chapter 4 Blade selection...............................................................................................................................12
4.1 Blade tooth selection........................................................................................................................12
4.2 Cutting data recommendation......................................................................................................... 13
4.3 Run-in period of a new saw blade....................................................................................................13
4.4 The main reasons that affect the service life of saw blade............................................................. 14
4.5 Blade speed and cutting rate selection............................................................................................ 14
Chapter 5 The main structure and description of the sawing machine........................................................ 15
5.1 Band saw structure description........................................................................................................15
5.2 Hydraulic system...............................................................................................................................18
5.2 Electric system.................................................................................................................................. 20
5.2.1 Operation buttons................................................................................................................. 20
5.2.2 Touching screen operation instruction................................................................................. 21
5.2.3 Electric diagram..................................................................................................................... 31
Chapter 6 TROUBLE SHOOTING......................................................................................................................36
6.1 Blade problems and solution............................................................................................................36

ANTS MACHINE EQUIPMENT
4
Chapter 1 Introductions
1.1 Characteristics and usages
This machine is a equipment for cutting metal materials with a bimetallic saw blade. It
has the advantages of compact structure, fast sawing, high precision, narrow saw gap, low
noise, and convenient operation. It is a new energy-saving product that replaces circular
saws and bow saws, widely used in sawing various metal materials in the electromechanical,
metallurgical, automotive, bridge, shipbuilding and other industries.
Name
Maximum cutting
capacity
Round
mm
330
Rectangular
(W×H）
mm
330×330
Saw wheel diameter
mm
450
Blade
Size
mm
1.1×34×4115
Line speed
m/min
25/45/64/80
Rate
m/min
Stepless adjusted
Motors
Main motor
KW
4(4P)
Hyd. motor
KW
0.75
Cooling motor
W
90
Tanks
Hydraulic
L
60
Cooling
L
50
Machine size
mm
2350×2220×1500
1.2 Pressure setup and values
Pressure
Hydraulic
system
Mpa
<3.5
Blade tension
N.m
30-40

ANTS MACHINE EQUIPMENT
5
1.3 Hydraulic oil
Before using the machine, we must have the amount of oil in the tank. If the amount of
oil is not enough, please add hydraulic oil or similar oil until the filter is completely
immersed in the oil.
Take southern weather as an example, use 46# hydraulic oil in summer and 32#
hydraulic oil in winter.
1.4 Cooling water
Before packaging, we have cleaned the cooling water in the sawing machine to keep
the cooling tank dry.
Please add cooling water (5 ~ 8% saponified liquid, the rest is tap water) before using,
and check whether the height of the cooling water exceeds the maximum water level of the
pump. Do not exceed the maximum water level of the pump when adding cooling water
After daily work, the machine should be cleaned to avoid rust; if it is not used for a long
time, the machine should be protected with rust-proof oil.
Warning:
• The cooling pump is forbidden to run without cooling water, otherwise the cooling pump
will be damaged.
• In winter, if the cooling water freezes, do not turn on the machine. Use about 10℃of
warm water to melt before turning on the machine, otherwise the cooling water pump will
be damaged.
1.5 Power supply
①All power distribution should be carried out by professional electricians in
accordance with national power distribution standards.
②When we are going to carry out the work of power distribution, we should
disconnect the external power supply first to achieve the insulation effect. If you just
disconnect the main switch, the line between the incoming line and the main switch is
electrified.

ANTS MACHINE EQUIPMENT
6
③If you want to connect to the power supply, you should use an appropriate cable to
connect, and make sure that the wire we use is suitable.
④When the machine is installed and connected to the power supply, be sure to
connect the protective grounding wire to the special protective grounding contact of the
machine's electrical box!
⑤When the machine tool needs to be overhauled, be sure to turn off the external
power switch, lock it at the stop position and remove the key to ensure personal and
equipment safety!

ANTS MACHINE EQUIPMENT
7
Chapter 2 Instructions
2.1 Saw blade replacement
The following describes the saw blade replacement procedure after the current blade is
broken during work:
1Release the emergency stop.
2Press the saw frame up switch to raise the saw frame.
3Open the left and right saw wheel protective covers.
4Release the blade tension device
5Take out the used saw blade between the carbide guiding blocks.
6Remove the used saw blade.
7Put the new saw blade on the two saw wheels.
8Insert the back of saw blade into the carbide guiding blocks.
9Make the back of the saw blade against the edge of the driving wheel.
10 Adjust the saw blade tension device to make the saw blade tighten.
11 Close the protective covers of the saw wheels.
Warning:
• For safety, please wear gloves
2.2 Operation instruction
1Install the saw blade on the machine.
2Start the hydraulic pump.
3Adjust the distance between two guiding arms according to the width of the
workpiece.
4Lift the saw frame.
5Move the movable clamping vise to make the distance between the two vises
wider than the workpiece.
6Load the workpiece on the working table.
7Operate the clamping vises to clamp the workpiece.

ANTS MACHINE EQUIPMENT
8
8Press “blade run” button, and at the same time, the cooling water will come out
from the cooling points at the guiding arms and the drive saw wheel. Please adjust the flow
of cooling water appropriately.
9Adjust the saw frame feeding rate by the speed control valve.
Note:
• When using a new saw blade, there should be a run-in period for the new blade to ensure
the service life.
• After daily work, remove the workpiece, lower the saw frame to the lowest position, and
then loosen the saw blade.

ANTS MACHINE EQUIPMENT
9
Chapter 3 Maintenance and Lubrication
■Clean up the iron filings on the machine after daily work.
■After cleaning, lower the saw frame to the lowest position.
3.1 Daily maintenance
Before operating, check the machine according to the following procedures:
1Check whether the hydraulic oil exceeds the filter. If not, add an appropriate
amount of hydraulic oil.
2Check the coolant, if necessary, add the coolant appropriately.
3Check whether the saw blade is located between the left and right saw wheels, and
between the carbide guiding blocks.
3.2 Weekly maintenance
Add appropriate amount of grease to the following parts
3.3 Maintenance every six months
Replace the gear oil
Gear oil type: L-CKC220 Medium Load Industrial Closed Gear Oil
Note:
• The new machine must undergo the first gear oil replacement after the first 240 working
hours or one month.

ANTS MACHINE EQUIPMENT
10
• The second replacement is after 720 working hours or three months.
• Then, replace it every 1440 working hours or 6 months.
3.4 Annual maintenance
Replace the hydraulic oil
Hydraulic oil type: L-HM46 anti-wear hydraulic oil

ANTS MACHINE EQUIPMENT
11
3.5 Lubrication system
No.
Lubricate
part
Method
Time
Quantity
Recommended
oil
Remark
1
Worm gear
box
Oil filling: unscrew
the oil filler cap and
add oil to the oil
mark position. Oil
drain: remove the
drain plug
Per six months
L-CKC220
Medium Load
Industrial
Closed Gear Oil
2
Hydraulic
tank
Oil filling: Remove
the shutters and
add oil until the
filter screen is
completely
immersed in the oil.
Oil drain: remove
the drain plug
Per six months
40L
L-HM46
anti-wear
hydraulic oil
3
Drive wheel
shaft
Grease gun
Per six months
Appropriate
Grease
4
Cooling tank
Use bucket or other
suitable tool to fill
cooling water
Daily
According to
demand
40L
5-8% saponified
liquid, rest is tap
water
When the cooling water is
too dirty to be used, drain
the waste water, clean it up
and fill with new cooling
water for future use
5
Driven wheel
shaft
Grease gun
Weekly
Appropriate
Mobil Lux
Grease EPL
grade: NLGIL
6
Guide arm
Grease gun
Weekly
Appropriate
Mobil Lux
Grease EPL
grade: NLGIL
7
Blade tension
screw
Grease gun
Weekly
Appropriate
Mobil Lux
Grease EPL
grade: NLGIL
8
Guiding rod
for
workpiece
feeding
Grease can
Weekly
Appropriate
Mobil Lux
Grease EPL
grade: NLGIL
9
Parts without
paint
Brush
If demanded
Appropriate
N32 ～N68
machine oil
In order to ensure function
and maintain appearance,
reduce wear, corrosion and
rust

ANTS MACHINE EQUIPMENT
12
Chapter 4 Blade selection
4.1 Blade tooth selection

ANTS MACHINE EQUIPMENT
13
4.2 Cutting data recommendation
Material
Type of steels
Blade speed
（M/MIN）
Cutting Rate
（CM2/MIN）
GB(China)
JIS
(Japan)
AISI
(USA)
DIN
(GERMANY)
Low carbon
steel
08
S10C
1010
C10
50-75
70-80
15
S15C
1015
C15
50-75
70-80
Medium carbon
steel
45
S45C
1045
C45
50-70
60-70
55
S55C
1055
CK55
50-70
50-60
Carbon tool
steel
T10
SK4
W1
C75W
40-50
25-45
T12
SK2
W1
C125W
40-50
35-45
T8Mn
SK2
W1
C125W
40-50
35-45
Alloy structural
steel
40CrNi
SNC236
3140
40NiCr6
30-40
30-40
40CrMoA
SCM440
4140
42CrMo8
40-50
35-45
40CrNiMoA
SNCM439
4340
34CrNiMo8
35-45
30-40
High speed
steel
W18Cr4V
SKH2
T1
S18-0-1
25-35
20-30
W18Cr4VCo5
SKH3
T4
S18-1-2-5
20-30
15-25
Cold molding
alloy tool steel
Cr12MoV
SKD11
D2
X155CrVMo121
25-35
20-25
CrWMn
SKS2
D7
105WCr6
20-30
15-20
9SiCr
SKS3
D1
105WCr6
25-35
20-25
Hot molding
alloy tool steel
3Cr2W8V
SKD5
H21
X30CrV93
35-45
30-35
4Cr5MoV1Si
SKD61
H13
X40CrMoV51
30-40
25-30
5CrNiMo
SKT4
L6
X55NiCrMoV6
25-30
20-25
Alloy spring
steel
50CrVA
SUP10
6150
50CrV4
20-35
25-35
50CrMnVA
SUP10
6150
50CrV4
20-35
25-35
Bearing steel
GCr15
SUJ2
52100
100Cr6
35-45
30-40
Stainless steel
Ocr18Ni9
SUS304
304
X5CrNi1810
35-45
20-30
oCr17Ni12Mo2
SU316
316
X5CrNiMo1712
20-25
15-20
1Cr17
SU430
430
X6Cr17
30-40
25-35
4.3 Run-in period of a new saw blade
When using a new blade, please select a suitable blade feeding rate(speed) according
to the material.

ANTS MACHINE EQUIPMENT
14
For example: cutting 45# steel with dia. 200mm, at the first cut, please adjust the
feeding rate(speed) of blade to 0.2 times as fast as the usual rate; at the second cut, adjust it
to 0.5 times; at the third cut, 0.8 times; from the forth cut, it should reach the usual rate.
If cutting hard materials, please adjust the feeding rate(speed) accordingly. Otherwise,
it will seriously reduce the blade efficiency and shorten the blade life.
The advantages of correct initial use for a new blade are as below:
●Long service life of saw blade；●Fast cutting speed；●Higher cutting accuracy.
4.4 The main reasons that affect the service life of saw blade
■Saw blade fracture: usually due to excessive tension, sudden changes at the entrance of
the guide arm, etc., which cause fatigue on the back of the saw blade and cause fracture;
■Saw blade teeth breaking and deviation: generally caused by improper selection of
cutting conditions, such as excessive feeding rate(cutting speed);
■The vibration of the sawing machine will also cause the saw blade teeth breaking;
■The back of the workpiece contains impurities, which makes the saw blade suddenly
encounter hard spots during the cutting process, causing tooth breaking.
4.5 Blade speed and cutting rate selection
■JB/T4318.4-2002 Band saw machine load test:
■The material of the test piece is 45# steel; the diameter of the test piece is 150mm; the
cutting speed is ≤70m/min;
■Cutting rate (productivity) is 80cm2/min
Select appropriate blade line speed and cutting rate according to the material of the
workpiece
■Cutting rate (square centimeters/minute) = workpiece area (square centimeters) /cutting
off time (minutes). That is, after the saw blade line speed is selected, adjust the "Speed
control valve" on the operation panel to make the saw frame feeding downward at a proper
speed to cut, and cut off the workpiece in an appropriate time.

ANTS MACHINE EQUIPMENT
15
Chapter 5 The main structure and description of the sawing machine
5.1 Band saw structure description
This machine tool adopts mechanical transmission to drive the saw blade for rotary
movement; hydraulic transmission to make the saw frame move up and down 、vises
clamping/loosening movement; and complete the whole sawing process by electrical
control.
⑴Base, workbench
The base is a multi-box structure integrating the hydraulic tank, cooling tank and
electrical box. The base is welded with high-quality steel plates.
The workbench is a high-grade casting, which is fastened to the base to carry the workpiece
and install other parts.
⑵Saw frame
The saw frame is a steel plates welded part. The saw frame is installed on a sliding
sleeve and moves up and down along the column under the drive of a lifting cylinder.
The driving wheel rotates under the drive of the worm gear box. The saw frame is equipped
with a guide beam, and the left and right guide arms are installed on the guide beam. The
guide bearing and the carbide guide blocks ensure the stability and accuracy of the saw
blade movement.
⑶Worm gear box
Located on the back of the saw frame, the saw wheel is directly driven to rotate by the
motor, pulley, and belt.
By changing shift at the belt pulley can obtain four shifts blade line speed to meet the
sawing of workpieces of different materials. The machine must be stopped before shifting
the belt position.
(4) Column
The main column is welded and ground with No. 45 seamless steel pipe, the surface is
plated with a wear-resistant plated layer. The column sleeve is HT200 casting, and the

ANTS MACHINE EQUIPMENT
16
oil-containing wear-resistant sleeve is installed inside. The auxiliary column is installed on
the left side of the machine tool in the form of a round column, mainly to balance the lifting
movement of the saw frame.
⑸Workpiece clamping mechanism
The workpiece is clamped by a hydraulic cylinder driven vise. The cylinder stroke is
330mm, and there is top clamping cylinder to be used for bundling sawing.
(6) Feeding device
This machine tool uses a vise clamping forward feeding method, the path is a free path.
The clamping vises move on the round guiding rails under control of the the hydraulic
feeding cylinder. The feeding length detection adopts the grating scale, and the single
feeding stroke is 500mm. Multiple feeding is available.
(7) Hydraulic system
It is composed of sealed independent hydraulic station, pipeline, throttle valve, oil
cylinder, etc. The hydraulic station is located on the left side of the machine, mainly
responsible for the lifting of the saw frame, the clamping and unclamping of the vises, the
feeding and retreating of the workpiece. In order to easy operation, the throttle valve is
installed on the control box, and the throttle valve can be used to control the feeding rate of
the saw frame.
(8) Electrical control system
The control box is on the left side of the machine tool, the operation panel is installed
on the control box, and the transformer, contactor, thermal overload relay, etc. are installed
in the control box. To ensure safety, there is an interlock between each action. Specifically: if
the vise is not clamped, the main drive cannot work; the vise must not be loosened during
the sawing process; all actions are controlled by a PLC programmable controller; a touch
screen is used instead of traditional button operations, it can be setup at one time of
multiple groups of different feeding values and times, the feeding values and times can be
directly displayed on the touch screen.
(9) Cooling system
It is composed of water tank, water pump, pipeline, valve and water nozzle. It is used to
fully cool and lubricate the saw blade to improve the efficiency and precision of sawing,

ANTS MACHINE EQUIPMENT
17
extend the service life of the saw blade, and at the same time remove the sawdust on the
blade teeth to ensure its normal work.
(10) Saw blade tension device
Saw blade tension and blade breaking protection device: The blade tension device is
installed at the back side of the idle saw wheel (at the left side of the saw frame). After the
band saw blade is installed on the saw wheels, the saw blade should be tensioned or
loosened by the manual screw. The tension is based on the torque wrench adjustment.
There is a proximity switch behind the idle saw wheel. When the saw blade is broken or
overloaded, the proximity switch will not receive the saw wheel signal and the machine will
automatically stop to ensure the safety of equipment and personnel.
(11) Out-of-stock detection device
A photoelectric switch is installed behind the fixed feeding vise. When the material is
cut to the last section, the photoelectric switch cannot detect the material, indicating that
the material needs to be reloaded. At this time, the machine stops working and the touch
screen prompts no material . The height of the photoelectric switch needs to be adjusted
according to the size of the material.
(12) Bundle cutting device
In order to facilitate the sawing of small-size bars in a bundle, a top clamping cylinder is
installed above the clamping vises, and their action is consistent with the horizontal
clamping action of the relative vise to realize the bundle cutting of small-size materials.

ANTS MACHINE EQUIPMENT
18
5.2 Hydraulic system
The hydraulic circuit composed of hydraulic pumps, valves, cylinders, oil tank, pipelines
and other components completes the saw frame movements, the clamping of the
workpiece, and the feeding of the workpiece under electrical control. The throttle valve can
realize the stepless adjustment of the saw frame feeding rate, thus ensuring the sawing
needs for different materials.
⑴List of hydraulic parts
No.
Name
Model
Qty.
1
Hydraulic pump
VP-20F-A3
1
2
Speed control valve
L-10
1
3
Solenoid valve
02-3C2
5
4
Solenoid valve
02-2B2
2
5
Pressure gauge
16MPa
1
6
Filter
HY37-25
1
7
Hose connector
Nominal diameter
1
8
Lifting cylinder
80X350
1
9
Front clamping cylinder
70X330
1
10
Back clamping cylinder
80X330
1
11
Feeding cylinder
70X510
1
12
Way-giving cylinder
90X5
2
13
Top clamping cylinder
63X30
2

ANTS MACHINE EQUIPMENT
19
⑵Hydraulic schematic diagram