DoAll c-530 nc Parts list manual

ISTRUCTIO & PARTS MAUAL Pag.1
Edition 2008-A
INSTRUCTION &
PARTS MANUAL
for
Band Saw Machine type
C-530 C
Y EAR OF PRODUCTION
2008
S ERIAL NUMBER
28297

Instruction & Parts Manual
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Edition 2008-A
Dear Customer,
First of all, thank you for choosing a DoAll product.
DoAll represents an important reference in the metal cutting business worldwide,
and its production has always been recognized as synonymous of uality.
All machine componets have been designed and manufactured to guarantee best
possible performances. To keep this high standard, we kindly invite you to use only
original DoAll spare parts.
DoAll band saw machines are CE marked and in the following pages the reader will
find a CE declaration which follows the European Directive 89/392 re uirements.
DoAll is sure to assure with this machine the state of the art solutions for the opera-
tor safety, and to be part of the general improvement of labour conditions.
DoAll

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Edition 2008-A
CE DECLARATIO .........................................................................................................................
1. GEERAL IFORMATIO ......................................................................................................................... 7
1.1. Goal of this manual. .......................................................................................................................... 8
1.2. Regulations to refer. .......................................................................................................................... 8
1.3. Manual description ........................................................................................................................... 8
2. MACHIE IDETIFICATIO DATA .............................................................................................................. 9
2.1 Main costructi e characteristics. .......................................................................................................... 10
2.2. Blade speed .................................................................................................................................. 10
2.3. Working surface ............................................................................................................................ 10
2.4. Indexing ....................................................................................................................................... 11
2.5. Vises ........................................................................................................................................... 11
3. H OW TO USE THE ISTRUCTIO MAUAL ................................................................................................. 11
3.1. Who should read the instruction manual................................................................................. 11
3.2. Where to keep this manual ............................................................................................................... 11
3.3. Strength of this manual .................................................................................................................... 11
3.4. Manual update............................................................................................................................... 11
3.5. How to obtain more copies ............................................................................................................... 12
3.6. If the machine change owner ............................................................................................................ 12
3.7. Suggestions .................................................................................................................................. 12
4. LIABILITY LIMITS ................................................................................................................................. 12
4.1 Inappropriate use of the machine ......................................................................................................... 12
5. TYPE OF USE ALLOWED ................................................................................................................ 14
5.1. machine ADDRESSEE ................................................................................................................. 14
5.2. Operator ....................................................................................................................................... 14
5.3. Regulation .................................................................................................................................... 14
5.4 Typical use .................................................................................................................................... 14
5.5. Limits using the saw ....................................................................................................................... 15
5.6. Workable materials ......................................................................................................................... 15
5.7. Work area .................................................................................................................................... 15
This area must be marked by an appropriate signal. ...................................................................................... 15
5.8. Work place ................................................................................................................................... 15
5.9. Command modes, stop, emergency stop and out of ser ice. ..................................................................... 15
5.9.1 Command modes ..................................................................................................................... 16
5.9.1.1. Stop ................................................................................................................................... 16
5.9.1.2. Emergency stop .................................................................................................................... 16
5.9.1.3. Out of ser ice ....................................................................................................................... 16
5.9.1.4. Safety precautions .................................................................................................................. 16
. TECHICAL DESCRIPTIO ...................................................................................................................... 17
6.1. Machine structure ........................................................................................................................... 17
6.1.1. Base frame ............................................................................................................................. 17
6.1.2. Chip con eyor ........................................................................................................................ 17
6.1.3. Index assembly........................................................................................................................ 17
6.1.4. Vices .................................................................................................................................... 17
6.2. Cutting bridge................................................................................................................................ 18
6.2.1 Cutting bridge frame ................................................................................................................. 18
6.2.2 Guiding columns ...................................................................................................................... 18
6.2.3 Columns connection ................................................................................................................. 18

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6.2.4 Lifting cylinder ......................................................................................................................... 18
6.2.5 Blade tension assembly .............................................................................................................. 18
6.2.6 Band dri e assembly ................................................................................................................. 18
6.2.7 Band brush assembly ................................................................................................................. 18
6.2.8 Left and right band guides. ......................................................................................................... 19
6.2.9 Feed pressurecontrol .................................................................................................................. 19
6.2.10 Wheels ................................................................................................................................ 19
6.2.11 Band dri e motor .................................................................................................................... 19
6.3. Hydraulic power unit ....................................................................................................................... 19
6.3.1 Motor-pump assembly .............................................................................................................. 19
6.3.2 Oil reser oir ............................................................................................................................ 19
6.3.3 Solenoid al es ........................................................................................................................ 19
6.4. Electrical system ............................................................................................................................ 20
6.4.1 Control console ........................................................................................................................ 20
6.4.2 Control enclosure ..................................................................................................................... 20
7. M ACHIE PROTECTIOS ................................................................................................................ 21
8. H OW TO MOVE THE MACHIE ............................................................................................................... 21
9. H OW TO ISTALL THE MACHIE ............................................................................................................ 21
10. W HAT TO DO TO PREPARE THE MACHIE TO OPERATE ............................................................................. 22
11. S AFETY DEVICES ................................................................................................................................ 23
11.1 Limit switches and segnalation de ices ............................................................................................... 23
11.1.1. Limit switches ....................................................................................................................... 23
11.2. Fix protections ............................................................................................................................. 23
11.3. Mo eable protections .................................................................................................................... 23
11.4. Safety features set-up ..................................................................................................................... 23
12. U SE OF THE MACHIE ......................................................................................................................... 24
12.1. How to use the machine – The Saw 4 control ...................................................................................... 24
12.1.1 What the Saw 4 is ........................................................................................................... 24
12.1.2 Switching the Saw 4 ON ................................................................................................. 24
12.1.3 Machine status icons ....................................................................................................... 25
12.1.4 Single components status icons....................................................................................... 25
12.1.5 Manual cycle ................................................................................................................... 26
12.1.5.1 Manual operation with the material handling (Option) .................................. 27
12.1.6 Semi automatic cycle ........................................................................................... 27
12.1.7 Automatic cycle .................................................................................................... 27
12.1.7.1 Programs directory .............................................................................................. 27
12.1.7.2 Create a new cutting program .......................................................................... 28
12.1.7.2.1 How proceed to create your working list (Only for material handling) .................... 28
12.1.7.3 Running a program ....................................................................................................... 29
12.1.7.4 How to modify the current cutting program (PGM function) ...................................... 29
12.1 .8. How to select the type of coolant (only for machine which applies mist lubricator units) .......... 29
12.1.9 General information concerning parameters setup ................................................. 29
12.1.10 Select your country language ............................................................................. 32
12.1.11 Alarms list ..................................................................................................................... 32

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12.1.12 Material library .............................................................................................................. 32
12.1.13 Inputs & outputs testing screen .......................................................................... 34
12.1.14 Software update ............................................................................................................. 34
12.1.15 Help function ................................................................................................................. 35
12.2. Head feed control .................................................................................................................. 35
12.2.1 How to select the feed system (option) ........................................................................... 35
S ERVO ......................................................................................................................................... 35
12.3. AUTOMATIC WORKSTOP (OPTION) ............................................................................. 35
12.3.1 How to reset the automatic workstop sensor ................................................................... 36
12.4. BAND DEVIATION MONITOR (OPTION) ....................................................................... 36
13. CALIBRATIO AD TUE - UP .............................................................................................................. 37
13.1. Calibration .................................................................................................................................. 37
13.2. Machine tuning-up ....................................................................................................................... 37
13.3. Blade motor in erter ...................................................................................................................... 37
13.3.1 Control panel ................................................................................................................... 37
13.3.2 Display ............................................................................................................................ 38
13.3.3 Help - function and language - selection ......................................................................... 38
13.3.4 In erter status .................................................................................................................. 38
13.3.5 Warnings ......................................................................................................................... 39
13.3.6 Operating error messages ................................................................................................ 39
13.3.7 Hardware error messages ................................................................................................ 40
13.3.8 Programming structure .................................................................................................... 41
14. ORDIARY PROBLEMS ......................................................................................................................... 43
14.1. Base .......................................................................................................................................... 43
14.2. Cutting bridge .............................................................................................................................. 43
14.2.1 Columns ............................................................................................................................... 43
14.2.2 Connection bar ....................................................................................................................... 43
14.2.3 Lifting cylinder ....................................................................................................................... 43
14.2.4 Blade tension assembly ............................................................................................................ 44
14.2.5 Band dri e assembly ................................................................................................................ 44
14.2.6 Guide arms............................................................................................................................ 44
14.2.7 Band brush assembly ............................................................................................................... 44
14.2.8 Wheels ................................................................................................................................. 44
14.2.9 Ser o-cutting de ice ................................................................................................................ 44
14.3 COOLANT SYSTEM .............................................................................................................. 44
14.4 HYDRAULIC POWER UNIT ................................................................................................... 44
14.5 ELECTRIC CONTROL PANEL ................................................................................................ 45
15. MAITEACE .............................................................................................................................. 4
15.1 Lubrication .................................................................................................................................. 46
15.2. Problems .................................................................................................................................... 47
15.4. Blade replacement ........................................................................................................................ 47
1 . REMAIIG DAGERS ......................................................................................................................... 48
17. P ERSOEL TRAIIG .......................................................................................................................... 48
18. M ACHIE DISMATLE ........................................................................................................................ 48

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CE DECLARATIO
We declare that the product “Band saw machine type C-530 NC”:
Serial number 28297 Year of production 2008
referred to in this declaration is in compliance with:
• CEI EN 60204-1
• UNI EN 292/1
• UNI EN 292/2
and :
1. EEC Machine Directi e 89/332 dated June 14, 1989 and amendments ;
2. EEC Low Voltage Directi e 73/23 and amendments ;
3. EEC Directi e 89/336 and amendments.
This product uses only tested and certified components, which meet the CE requirements, unless
otherwise specified.
Vanzago, April 2008 IST ECH S EGATRICI S. R . L .
Via Donatori di Sangue 15
20010 Vanzago – MI
Alessandro Rescaldani
(Amministratore)

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1. GEERAL IFORMATIO
This machine has been designed and built adopting the state of the art technologies, and with respect of the European Laws
for machine tools.
Notwithstanding what abo e, it is implicit that working underestimating or forgetting the dangers related to this kind of ma-
chine can generate, the operator could cause serious injuries to him/herself.
Therefore, the operator should carefully read the entire instruction manual, and respect strictly what prescribed in it.
In particular, please pay attention to the following suggestions :
1. Keep always your working area clean.
2. Avoid to keep in your working area pieces of material, chips, cans, or other things which could reduce the possi-
bility of movement to the operator or even generate risks of injury.
3. Be always cautious using the machine, because, even if it is protected in every dangerous spot, it can be a dan-
gerous equipment, and thus it has to be use being particularly careful and aware.
4. Give immediately notice to your supervisor if the machine needs to be maintained or serviced, even if the prob-
lem is caused by inexperience. An incorrect use of the machine can be dangerous and can cause injuries.
5. Do not try to repair the problem if you are not sure of what caused it.
. ever service or maintain the machine when it is running. Always turn it off.
7. ever leave the machine working without respecting the safety rules or removing the safety devices.
8. Remove electrical power when the machine is not working.
9. Always wear protective cloths, especially when replacing the blade.
10. ever do anything imprudent.
11. ever touch the unprotected part of the blade.
12. ever cut any piece shorter than the shortest possible length.
13. ever start cutting if the material is not firmly clamped by the vises.
14. Move the material only if the cutting bridge is completely up.

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1.1. G OAL OF THIS MAUAL .
This manual wants to explain instructions about how to operate safely, using texts, drawings, pictures and diagrams used by
themsel es or combined to instruct the operator to use the machine.
1.2. R EGULATIOS TO REFER .
This manual was written to comply to the European Machine Directi e UNI-EN 89/392 and following modifications, and
based on UNI-EN 292/1 e 292/2 concerning a safe use of the machine.
1.3. M AUAL DESCRIPTIO
This document contains information needed to :
• install and make the machine work
• normal use of the saw
• how to maintain the machine
• how to ser ice the machine
• how to dismantle the machine

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2. MACHIE IDETIFICATIO DATA
TAB 2.1
Identification data
Description Denomination or value
Plate
Band Saw machine C-530 C Yes
Serial number 28297 Yes
Year 2008 Yes
Voltage and frequency 400 V 3ph+N+GND ±10% 50 Hz ±1% Yes
Hydraulic power unit Yes
Control circuit 24Vdc
Dangerous area Area around the machine (1.5meters)
Working place Machine control panel
Type of tool Band saw blade
Machine
Description Band saw machine, type C-530 NC
Total amperage A 28
Maximum power kW 12,5
Approximate weight Kg 4.600
TAB 2.2
Technical Characteristics
Description C-530 NC
Round cutting capacity mm 530
Square cutting capacity mm 530 x 530
Index stroke mm 500
Band dri e motor kW 7.5
Blade dimension mm 6.700 x 54 x 16
Blade speed m/1’ 20-100
Hydraulic pump motor kW 4
Coolant pump motor kW 0.3
Hydraulic pump capacity l/1’ 27
Voltage of motors Vac 400
Control circuit oltage Vdc 24
Cutting kerf mm 2.7
Hydraulic reser oir l 80
Coolant reser oir l 100
Working height mm 800
Machine o erall dimension mm
3100x2500x2800
Shipping dimension mm
3100x2500x2500
Color DoALL Royal blue
Mo ing components color RAL Beige 1001
Weight (Approximate) Kg 4.600

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2.1 M AI COSTRUCTIVE CHARACTERISTICS .
The machine uses :
• NC controller with operator display and 32 customizable function keys integrated.
• Multi language diagnostic with info messages.
• Material libraries.
• Band speed readout integrated.
• Constant feed pressure control.
• Band wheel dri e with AC in erter and planetary reducer.
• Automatic guide arm.
• Carbide faced saw guides with large diameter lead in rollers on both guide arms.
• Automatic chip con eyor.
• Hardened, ground, anti-wear steel plates on all work clamping surfaces.
• Ground, hardened and hard-chrome plated guide columns.
• Power dri en band cleaning brush.
• Hydraulic band tension.
• Recirculating, coolant system, pump 400/50/3, applied through nozzle.
• Chip container.
• Rapid saw head approach control.
• Out of stock sensor.
• Band wheel door interlocks.
• Blade guards.
• Automatic band kerf compensator.
• C26 gray iron castings
The saw is built to work in automatic also without an operator. A special ise design allows the machine to cut slightly irre-
gular bars.
2.2. B LADE SPEED
The blade speed is controlled by an AC motor and a ariable frequency dri e, which allow to regulate the blade speed within
a range of 0- 100 m/1’. In this way the machine can cut both hard steels and aluminum. A digital reader constantly shows the
blade speed .
The blade speed can be adjusted :
• in automatic cycle while editing the program;
• anytime, by pressing the keys on the control panel.
2.3. W ORKIG SURFACE
The material that has to be cut lays on a roller way that co ers the entire stroke of the machine. The distance between the roll-
ers is studied to a oid that short pieces can fall.

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2.4. I DEXIG
The material is fed by an index with hydraulic ises, which clamp the piece and mo e it under the blade. The index mo es
on round chrome guides located underneath the roller table, and it is controlled by an hydraulic cylinder. The index has two
speeds: fast to quickly approach to the set lenght and slow to precisely position the piece. Anencoder (with a precision of a
tenth of a millimeter) controls the positioning of the index.
2.5. V ISES
Vises are hydraulic. The jaws are tempered.
TAB 2.3
Cutting tolerances
Machine
Description C-530 NC
On the length mm
±0,15 mm / 500 mm
On the perpendicularity mm
±0,2 mm /100 mm
3. HOW TO USE THE ISTRUCTIO MAUAL
3.1. W HO SHOULD READ THE ISTRUCTIO MAUAL
TAB 3.1 Who should read the manual
Description Operator Internal ser ice
Mechanical Electrical
Instruction Manual Yes Yes No
Electrical Schematic No No Yes
The electrical schematic is included in this manual and cannot be supplied separately.
3.2. W HERE TO KEEP THIS MAUAL
This manual, that is pro ided along the machine in one copy, should be kept where the machine is located, in a safe and pro-
tected place, to be consulted if necessary.
3.3. S TREGTH OF THIS MAUAL
1. This manual reflects the state of the art at the time the machine was built, and cannot be considered replaceable by a
newer ersion.
2. This manual has full force for all the life of the machine it goes along.
3. The customer is not allowed to copy totally or partially this manual to reach goals different than the one of the origi-
nal manual, and to a oid that a partial documentation replaces the original one.
3.4. M AUAL UPDATE
The manufacturer does not ha e to update this manual if impro ements are adopted on newer machines of the same kind of
the one this manual make reference to.
This manual will be updated by the manufacturer only if :

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• this manual contains mistakes, errors, or something is missing;
• the original machine is modified by the manufacturer.
Marginal errors or missing elements, if considered important for the correct work of the machine and its safe use will be im-
mediately notified through an “Errata Corrige”.
To modify this manual the manufacturer will bring all the copy of the same edition back and then new copies will be sent to
the customer.
The latest ersion is marked with higher letter (A, B....). The first edition is called “Edition A”.
3.5. H OW TO OBTAI MORE COPIES
If necessary, the customer can obtain new copies of this manual simply making a written request and mentioning on it the
machine serial number.
If copies are requested, the manufacturer has the right to be paid to issue them.
3. . I F THE MACHIE CHAGE OWER
If the original customer sales the machine, he/she should notify the manufacturer that the machine changed ownership, so to
allow the manufacturer to inform the new user on the dangers and limits of liability.
3.7. S UGGESTIOS
The customer should notify the manufacturer if impro ements are necessary and where they are to increase an easy under-
standing of this manual/
4. LIABILITY LIMITS
The manufacturer cannot be responsible if the machine if used in one following ways , which are classified as inappropriate :
4.1 I APPROPRIATE USE OF THE MACHIE
It has to be considered inappropriate the use of the machine if :
• the safety rules are partially are completely unattended ;
• what the manufacturer prescribed is not done ;
• the a danger or injury is due to an incorrect installation or assembly of the machine, and it was not done by the customer
or under his sur eillance ;
• wrong installation of protecti e equipment after maintenance or ser ice ;
• hydraulic or electrical problems due to the producer of the component and not to the producer of the machine ;
• big deficiency in maintenance ;
•
••
• modifications or maintenance on the machine without authorization of the manufacturer ;
•
••
• use of atypical tools, other than the ones suggested by the manufacturer ;
• use of non-original spare parts, other than the one suggested by the manufacturer ;
• Partial or complete non-obser ance of the instructions ;
• machine used by uninstructed operators without control of an expert operator ;
• mo ement or machining of non-typical materials, or o ersize and o erweight materials compared to the ones indicated ;

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• natural calamities, including earthquakes, floods or others which could pro oke danger or faults to the machine or its
structures easy to be identified ;
• if electrical , pneumatic or mechanical safety features were partially or completely remo ed ;
• maintenance while the machine is working;
• when parts of the machine are tensioned using temporary connections, without protection or using faulty materials ;
• a person without experience is within the danger area while the machine is running ;
• a person with experience is within the danger area while the machine is running with the automatic cycle.
It has to be considered inappropriate also when the machine runs without enough sur eillance to assure the operator
safety or to assure that the machine can run properly.

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5. TYPE OF USE ALLOWED
5.1. MACHIE ADDRESSEE
This machine was design and built to comply a professional use, meaning that, besides the technical knowledge required, it is
necessary to ha e a specific knowledge to operate the saw to obtain the required goals.
5.2. O PERATOR
The saw operator should ha e experience on similar type of machine. People with low or none experience must be educated,
followed and watched by a super isor with enough experience and ability.
Therefore, the operator must be aware about dangers related to the use of this machine, and dangers due to normal handling
of metallic materials, similar, or hea y .
This machine cannot be used by people with handicaps or disables.
5.3. R EGULATIO
Designing and building this machine we respected the following laws and rules :
• UNI rules
• CEI rules
and more in detail, concerning the safety features (type A and B rules):
• European Community Machine directi e 89/392;
• CEI-EN 60204-1 and related rules concerning electric’s, with respect of EC directi e 73/23 ;
• EN 292/1
• EN 292/2
If not clearly specified, e ery component used on this machine was UNI and CEI appro ed at the time it was bought or
made.
5.4 T YPICAL USE
This machine was designed and built to cut metallic materials fed by automatic systems and with o erall size non larger than
the ones listed in the chart below (5.4). The saw can mo e :
1. mo ement of the material before and after each cut ;
2. ertical mo ement of the cutting bridge ;
3. blade rotation.
All these mo ements could take place at the same time.
The saw has the following performance :
Tab. 5.4
Characteristic MIN MAX
Cutting speed cmq/m 5 140
Material feeding speed Mt./m 30 300

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Cutting bridge falling rate (w/o material) Mt./m 3 30
Bars size mm ∅ 13 ∅ 531
Bar weight kg. 0 1.000
5.5. L IMITS USIG THE SAW
The machine has two limits of use due to :
• operator’s inexperience
• material size and weight
1. The operator’s experience is particularly necessary when the saw runs in manual cycle ;
2. material size and weight must be within the ones abo e shown.
5. . W ORKABLE MATERIALS
This machine can cut only metallic bars, pipes and tubing. E ery other use will is considered inappropriate use of the ma-
chine.
5.7. W ORK AREA
This machine has to work in industrial en ironment. It is design to make mechanical machining under human control, but
the operator presence is not required continuously.
It is recommended to keep clean and free of interference the area close to the machine.
This machine use a mixture of oil and water as coolant liquid. Thus, the working area could be slippery and dirty.
T HIS AREA MUST BE MARKED BY A APPROPRIATE SIGAL .
5.8. W ORK PLACE
The machine has one work place in front of the control panel.
A second temporary work place is aside the ises, the register them, and to change the blade.
Each work place must be easy to reach when necessary, without interference, e en temporary. The machine can work au-
tomatically without operator, who must be present during the manual operations of loading and unloading, and control the
control panel operations.
No specific illumination is required, but the work place must be well illuminated to respect the requirements set by present
safety rules.
Only authorized people and maintenance personnel should be allowed to reach the saw work place.
The operator must be equipped with personal protection instruments, like glo es and safety glasses.
5.9. C OMMAD MODES , STOP , EMERGECY STOP AD OUT OF SERVICE .

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5.9.1 Command modes
The saw can be controlled in two different ways, turning or pressing a selector switch or a push-button (different ways for
different models). The switch enable a relay which insert the manual mode.
1. Automatic mode ; the switch is on the automatic mode. All automatic commands are enable.
2. Manual mode, the switch is on the manual mode. All the commands are switched to the control panel push-button and
switches.
5.9.1.1. Stop
The saw stops when the cutting cycle is o er.
5.9.1.2. Emergency stop
The emergency stop stops the machine remo ing tension from the control circuit.
5.9.1.3. Out of service
The saw can be turned out of ser ice remo ing tension from the control circuit, switching off the main disconnect switch
located on the front face of the enclosure. A signal saying “Out of ser ice” must be placed on the machine, and it is oper-
ator’s duty to erify that the machine cannot generate danger situations.
5.9.1.4. Safety precautions
The machine cannot generate danger situation when it is completely without electric or hydraulic power.
Concerning the electrical power, the machine must be completely disconnected from electrical sources, turning of the
electrical socket on the building electrical panel. The machine cannot be considered completely safe if the only main dis-
connect switch of the machine is turned off.

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. TECHICAL DESCRIPTIO
.1. M ACHIE STRUCTURE
This saw is manly made by :
1. Base frame
2. Cutting bridge
3. Hydraulic power unit
4. Control Panel
5. Coolant system
Pos. Tab .1. Base frame
6.1.1. Base frame
6.1.2. Chip con eyor
6.1.3. Index assembly
6.1.4. Vices
.1.1. Base frame
The machine frame is welded and machined. The material used is Fe 37. In the weldment there are two reser oirs, one for
the coolant liquid, and the second for the hydraulic oil.
The frame is machined to a oid corners or abrasi e points that could be dangerous. It is painted with two layers of paint, the
first of which pre ent corrosion.
It is machined to be assembled with other machine components.
.1.2. Chip conveyor
It is standard on automatic machines and optional on semi-automatic machines, and it is made by :
• Bended and welded frame with Fe37 steel.
• Hydraulically powered chip screw.
• Protecti e brackets.
• Chip tank
• Coolant reser oir
The chip con eyor remo es chips coming from the band brush and from the cut, taking them outside the machine.
.1.3. Index assembly
It includes :
• Index frame welded and machined , and made using Fe37 steel.
• Hydraulic cylinder, to mo e backward and forward the index frame.
• Steel ises to clamp the material, controlled by hydraulic cylinders.
Two limit switches are mounted on the index, the first to set the zero, and the second to control when the index is out of
stock.
.1.4. Vices
It includes :
• clamping ises, machined. Vises are controlled by hydraulic cylinders.

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.2. C UTTIG BRIDGE
Pos. Tab .2 Cutting bridge
6.2.1 Cutting bridge frame
6.2.2 Guiding columns
6.2.3 Columns connection
6.2.4 Lifting cylinder
6.2.5 Blade tension assembly
6.2.6 Blade dri e assembly
6.2.7 Band brush assembly
6.2.8 Left and right band guide
6.2.9 Cutting ser o-control
6.2.10 Wheels
6.2.11 Bland dri e motor
.2.1 Cutting bridge frame
The cutting bridge frame is a steel Fe37 weldment; it is machined to be assembled with other machine components.
The bridge was design and built to endure the cutting strength, keeping enough sturdiness.
The frame is mechanically machined and painted with anti-corrosion agents and with nitro paint.
The blade is completely protected where it does not work. Co ering the wheels, there are two doors that can be opened to
change the blade. Two safety switches are mounted on these doors, so to stop the machine if the co ers are not in position.
The blade rotates on the wheels, one of which is dri en, and the other one is idler.
.2.2 Guiding columns
The columns guide ertically the cutting bridge mo ement. They are made with chrome bars, hardened and grinded.
.2.3 Columns connection
Made using a Fe37 steel plate, the columns connection connects and makes the guiding columns sturdier. It is fastened to the
columns through two bolts.
.2.4 Lifting cylinder
This is an hydraulic cylinder, with chrome rod and lapped cylinder. The lifting cylinder is a double effect cylinder. The cy-
linder head is attached to the cutting head, and the end head is fastened to the machine base fraqme.
.2.5 Blade tension assembly
The 431 NC utilize a manual band tension system. The proper band tension is assured by a set of springs located in the as-
sembly.
To release the blade, rotate CCW the band wheel. To tension the band rotate CW the wheel. The system has been designed
to guarantee a proper tensioning of the band. (see 15.4 Band replacement).
.2. Band drive assembly
The band is powered by an AC motor which automatically regulates the cutting speed. The motor is directly flanged on the
speed reducer: this application reduces ibration while pro iding best possible torque. On the other end of the reducer there is
the dri e wheel, that is fastened to the reducer.
.2.7 Band brush assembly
A band brush is powered by an hydraulic motor, and it cleans the teeth remo ing the chips.

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.2.8 Left and right band guides.
The band guides ha e to straighten the blade coming out the wheel, and keep it ertical helping the blade insertion between
the inserts.
Left gui e arm : Mo es horizontally on guides machined on the bridge, and it is mo ed by the mo ement of the ise.
Right gui e arm : Fixed on the cutting bridge. It supports the cutting ser o control.
Both the guide arms ha e carbide inserts.
.2.9 Feed pressurecontrol
The 431 NC utilize a constant feed pressure control. The feed force is adjusteable by turning the flow regulator al e, located
on the left side of the control panel.
.2.10 Wheels
Made using cast iron G26, and lathe machined. They are fastened as follow :
• the idler wheel is fastened on the band tension assembly, and it turns on ball bearings ;
• the band dri e wheel is fastened on the reducer shaft.
The wheels diameter is larger then the maximum material height that can be cut by the saw..
.2.11 Band drive motor
The machine mounts a self-cooling 4Kw, AC electric motor.
.3. H YDRAULIC POWER UIT
The power unit is located in an easy to ser ice spot of the machine frame. The al e manifold and solenoids lays on the right
side of the reser oir , o er which the motor pump assemblies is installed. The power unit is made by :
Pos. Tab .3. Hydraulic power unit
6.3.1 Motor-pump assembly
6.3.2 Oil reser oir
6.3.3 Solenoid al es
.3.1 Motor-pump assembly
Electrical motor and pump are connected by an elastic coupling.
.3.2 Oil reservoir
It is in the machine frame, and it has a maximum and a minimum le el indicators, and a suction filter. On the left side of the
infeed roller table there is a plug which allows to refill the reser oir. The hydraulic system has 2 filters :
• a 250 micron 45 liters suction filter
• a 60 micron 45 liters outflow filter
These two filters ha e to be remo ed when changing the oil for the first time (after 500 working hours), washed using trich-
loroethylene and dried blowing air.
.3.3 Solenoid valves
The solenoid al es are mounted on blocks, and the control the hydraulic mo ements.

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.4. E LECTRICAL SYSTEM
.4.1 Control console
The control console is on the upper part of the control enclosure, and all the push-buttons and switches are integrated in the
control unit. There is a 5” monitor, which displays the control commands.
.4.2 Control enclosure
It is made bending metal sheets and it complies the IP55 standards. Inside there is the electrical panel which supports all the
electrical de ices (relays, circuit breakers,...) complying the CEI 60204.1 standards.