DoAll c-530 nc Instruction Manual
Pag.1
Instruction Manual
Edition A
INSTRUCTION MANUAL
Band Saw Machine
type
C-530 NC
March 2003
Pag.2
Instruction Manual
Edition A
INDEX..................................................................................ERRORE. IL SEGNALIBRO NON È DEFINITO.
CE DECLARATION.........................................................................................................................5
GENERAL WARNINGS ..................................................................................................................6
1. GENERAL INFORMATION.................................................................................................................7
1.1. Goal of this manual...................................................................................................................7
1.2. Regulations to refer...................................................................................................................7
1.3. Manual description....................................................................................................................7
2. MACHINE IDENTIFICATION DATA....................................................................................................8
2.1 Main costructive characteristics.................................................................................................9
2.2. Blade speed...............................................................................................................................9
2.3. Working surface........................................................................................................................9
2.4. Indexing ....................................................................................................................................9
2.5. Vises........................................................................................................................................10
OW TO USE THE INSTRUCTION MANUAL.....................................................................................11
3. H
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. L
IABILITY LIMITS..........................................................................................................................13
4.1 Inappropriate use of the machine.............................................................................................13
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
5.8. Work place..............................................................................................................................15
5.9. Command modes, stop, emergency stop and out of service..................................................16
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 service................................................................................................................16
5.9.1.4. Safety precautions.........................................................................................................16
6. TECHNICAL DESCRIPTION.............................................................................................................17
6.1. Machine structure....................................................................................................................17
6.1.1. Base frame........................................................................................................................17
6.1.2. Chip conveyor.................................................................................................................17
6.1.3. Indexing ...........................................................................................................................17
6.1.4. Vises.................................................................................................................................18
6.2. Cutting bridge .........................................................................................................................18
6.2.1 Cutting bridge frame.........................................................................................................18
6.2.2 Guiding columns...............................................................................................................18
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Instruction Manual
6.2.3 Columns connection..........................................................................................................18
6.2.4 Lifting cylinder..................................................................................................................19
6.2.5 Blade tension assembly.....................................................................................................19
6.2.6 Band drive assembly.........................................................................................................19
6.2.7 Band brush assembly.........................................................................................................19
6.2.8 Left and right band guides.................................................................................................19
6.2.9 Cutting servo-control ........................................................................................................19
6.2.10 Wheels............................................................................................................................20
6.2.11 Band drive motor (Exhibit A07).....................................................................................20
6.3. Hydraulic power unit...............................................................................................................20
6.3.1 Motor-pump assembly ......................................................................................................20
6.3.2 Oil reservoir ......................................................................................................................20
6.3.3 Solenoid valves.................................................................................................................20
6.4. Electrical system....................................................................................................................21
6.4.1 Control console.................................................................................................................21
6.4.2 Control enclosure..............................................................................................................21
7. MACHINE PROTECTIONS ...............................................................................................................22
8. HOW TO MOVE THE MACHINE.......................................................................................................23
9. HOW TO INSTALL THE MACHINE...................................................................................................24
10. WHAT TO DO TO PREPARE THE MACHINE TO OPERATE .............................................................25
11. SAFETY DEVICES..........................................................................................................................26
11.1 Limit switches and segnalation devices.................................................................................26
11.1.1. Limit switches................................................................................................................26
11.1.2. speed reducer..................................................................................................................26
11.1.3. Mechanical extra stroke .................................................................................................26
11.1.4. Signals............................................................................................................................26
11.1.5. Led, indicators and signals to avoid danger situations...................................................26
11.1.6. Protection devices..........................................................................................................26
11.2. Fix protections ......................................................................................................................26
11.3. Moveable protections............................................................................................................27
11.4. Safety features set-up............................................................................................................27
12. USE OF THE MACHINE..................................................................................................................28
12.1. How to use the machine – The Saw 3 control.......................................................................28
12.1.1 What the Saw 3 is ...........................................................................................................28
12.1.2 Switching the Saw 3 ON.................................................................................................28
12.1.3 Machine status icons.......................................................................................................29
12.1.4 Status icons .....................................................................................................................29
Edition A
12.1.5 Manual cycle .......................................................................................................29
12.1.5.1 Manual operation with the material handling (option) ...............................31
12.1.6 Semi automatic cycle
12.1.7 Automatic cycle
12.1.7.1 Programs directory ..........................................................................................31
12.1.7.2 Create a new cutting program ......................................................................32
12.1.7.2.1 How proceed to create your working list (only for material handling).................32
...........................................................................................31
....................................................................................................31
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Instruction Manual
12.1.7.3 Running a program.......................................................................................................33
12.1.7.4 How to modify the current cutting program (PGM function)......................................33
12.1.8. How to select the type of coolant (for machine which applies mist lubricator units)....33
12.1.9 General information concerning parameters setup .................................................33
12.1.10 Select your country language .............................................................................36
12.1.11 Inputs & outputs testing screen ..........................................................................36
12.1.12 Software update.............................................................................................................36
12.1.13 Help function.................................................................................................................37
12.2. Head feed control..................................................................................................................37
12.2.1 How to select the feed system (option)...........................................................................37
12.3. Automatic workstop (option)................................................................................................37
12.3.1 How to reset the automatic workstop sensor ..................................................................38
12.4. Band deviation monitor (option)...........................................................................................38
13. HOW TO DISMANTLE THE MACHINE............................................................................................39
14. ORDINARY PROBLEMS..................................................................................................................40
14.1. Base.......................................................................................................................................40
14.1.1. Base (Exhibit A02).........................................................................................................40
14.1.2 Chip conveyor.................................................................................................................40
14.1.3. Index...............................................................................................................................40
14.2. Cutting bridge .......................................................................................................................40
14.2.1 Columns..........................................................................................................................40
14.2.2 Connection bar................................................................................................................41
14.2.3 Lifting cylinder................................................................................................................41
14.2.4 Blade tension assembly...................................................................................................41
14.2.5 Band drive assembly.......................................................................................................41
14.2.6 Guide arms......................................................................................................................41
14.2.7 Band brush assembly.......................................................................................................41
14.2.8 Wheels.............................................................................................................................41
14.2.9 Servo-cutting device .......................................................................................................42
14.2.10 Rapid approach .............................................................................................................42
14.3 Coolant system.......................................................................................................................42
14.4 Hydraulic power unit..............................................................................................................42
14.5 Electric control panel .............................................................................................................42
MAINTENANCE .............................................................................................................................43
15.
15.1 Lubrication.............................................................................................................................43
15.2. Problems ...............................................................................................................................44
15.3. Blade replacement.................................................................................................................44
16.
REMAINING DANGERS ..................................................................................................................46
17. PERSONEL TRAINING...................................................................................................................47
18. MACHINE DISMANTLE .................................................................................................................48
PROOF OF TEST............................................................................................................................49
SPARE PARTS LIST......................................................................................................................50
ELECTRICAL AND HYDRAULIC SCHEMATICS..................................................................72
Edition A
Pag.5
Instruction Manual
Edition A
CE DECLARATION
We declare that the product “Band saw machine type C-530NC”:
Serial number 23151 Year of production 2003
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 Directive 89/332 dated June 14, 1989 and amendments ;
2. EEC Low Voltage Directive 73/23 and amendments ;
3. EEC Directive 89/336 and amendments.
This product uses only tested and certified components, which meet the CE requirements, unless
otherwise specified.
Vanzago, March 2003 SEGATRICI S.R.L.
Via Ferrario 13
20010 Vanzago – MI
Alessandro Rescaldani
(Amministratore)
Pag.6
Instruction Manual
Edition A
GENERAL WARNINGS
This machine was design and built using the state of the art techniques, and with respect of the machine tools European
Laws.
Notwithstanding what above, it is implicit that working underestimating or forgiving the dangers which this kind of machine can generate, the operator could cause a serious injury to him/herself.
Therefore, the operator should carefully read the entire instruction manual, and respect strictly what in it prescribed.
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 possibility of movement for t he operator or even generate risks of inj ury.
3. Be always cautious using the machine, because, even if it is protected in every dangerous spot, it can be a dangerous 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 problem 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.
6. Never service or m aintain the machine when it is running. Always turn it off.
7. Never 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. Never do anything imprudent.
11. Never touch the unprotected part of the blade .
12. Never cut any piece shorter than the shortest possible length.
13. Never start cutting if the material is not firmly clamped by the vises.
14. Move the material only if the cutting bridge is completely up.
Pag.7
Instruction Manual
Edition A
1. GENERAL INFORMATION
1.1. GOAL OF THIS MANUAL.
This manual wants to explain instructions about how to operate safely, using texts, drawings, pictures and diagrams used by
themselves or combined to instruct the operator to use the machine.
1.2. REGULATIONS TO REFER.
This manual was written to comply to the European Machine Directive 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. MANUAL DESCRIPTION
This document contains information needed to :
• install and make the machine work
• normal use of the saw
• how to maintain the machine
• how to service the machine
• how to dismantle the machine
Pag.8
Name
Instruction Manual
Edition A
2. MACHINE IDENTIFICATION DATA
TAB 2.1
Identification data
Description
Type C-530 NC Yes
Serial number 23151 Yes
Year 2003 Yes
Voltage and frequency 400 V 3ph+N+GND ±10% 50 Hz ±1% Yes
Hydraulic power unit Yes
Control circuit 24Vdc 50 Hz
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 4.000
Band Saw machine
Denomination or value
Plate
TAB 2.2
Technical Characteristics
Description C-530 NC
Round cutting capacity mm 530
Square cutting capacity mm 530x530
Index stroke mm 500
Band drive motor kW 7.5
Blade dimension mm 6400x54x1.6
Blade speed m/1’ 20-100
Hydraulic pump motor kW 4
Coolant pump motor kW 0.25
Hydraulic pump capacity l/1’ 27
Voltage of motors V 400 c.a.
Control circuit voltage V 24 dc
Cutting kerf mm 1.8
Hydraulic reservoir l 50
Coolant reservoir l 70
Working height mm 770
Machine overall dimension mm
Shipping dimension mm
Color RAL DoALL Roy al blue
Moving components color RAL Beige 1001
Maximum noise level dB 80
Weight (Approximate) Kg 4.000
2800x2500x2800 H
same
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Instruction Manual
Edition A
AIN COSTRUCTIVE CHARACTERISTICS .
2.1 M
The machine uses :
• Cutting programmer SAWIII
• Trouble shutting control panel “Check Panel”
• Automatic feeding control device
• Blade speed controlled by an AC motor and a variable frequency drive.
• Working surface with non-wearable materials.
• Ball precision screws to control index movements.
• Vises with tempered inserts.
• Pressure reducer valves on vises.
• Self-positioning band guides.
• Carbide inserts mounted inside the band guides.
• Band brush powered by hy draulic motor.
• Chip conveyor powered by hydraulic motor.
• Cutting bridge mounted on chromate columns.
• Welded frame.
• Castings in gray iron C26
• Hydraulic band tension.
The saw is built to work in automatic also without an operator. A special design in the rear vise and working surface area allows the machine to cut slightly irregular bars.
2.2. BLADE SPEED
The blade speed is controlled by an AC motor and a variable frequency drive, which allow to regula te 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 cyc le during the editing ;
• in manual using a rotary potentiometer mounted on the control panel.
2.3. WORKING SURFACE
The material that has to be cut lays on a roller way that covers the entire stroke of the machine. The distance between the rollers is studied to avoid that short pieces can fall.
2.4. INDEXING
The material is fed by an index with hydraulic vises, which clamp the piece and move it under the blade. The index moves
on round chrome guides located underneath the roller table, and it is controlled by a tempered steel precision ball screw . The
index has two speeds : fast to move and slow to precisely position the piece. A rotary encoder (with a precision of a tenth of
a millimeter) controls the position of the index.
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Instruction Manual
Edition A
2.5. VISES
The saw vises are hydraulic. The clamping part of them have a tempered insert bolted. Besides, the hy draulic circuit that controls the vises has a pressure reducer valve with a gauge to avoid to clamp with too much strength the material and deform it.
Pag.11
Instruction Manual
Edition A
3. HOW TO USE THE INSTRUCTION MANUAL
3.1. WHO SHOULD READ THE INSTRUCTIO N MANUAL ?
TAB 3.1 Who should read the manual
Description Operator Internal service
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.
HERE TO KEEP THIS MANUAL
3.2. W
This manual, that is provided along the machine in one copy, should be kept where the machine is located, in a safe and protected place, to be consulted if necessary.
TRENGTH OF THIS MANUAL
3.3. S
1. This manual reflects the state of the art at the time the machine was built, and cannot be considered replaceable by a
newer version.
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 manua l to reach goals different tha n the one of the orig inal manual, and to avoid that a partial documentation replaces the original one.
ANUAL UPDATE
3.4. M
The manufacturer does not have to update this manual if improvements 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 :
• this manual contains mistakes, errors, or something is missing;
• the original machine is modified by the manufacturer.
Marginal errors or missing e lements, if considered important for the correct work of the machine and its safe use will be immediately notified through an “Errata Corrige”.
To modify this manual the manufacturer will bring all the copy of the sa me edition back and then new copies will be sent to
the customer.
The latest version is marked with higher letter (A, B....). The first edition is called “Edition A”.
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Instruction Manual
Edition A
3.5. HOW TO OBTAIN MORE COPIES
If necessary , the customer ca n obtain new copie s of this manual simply making a written request a nd mentioning on it the
machine serial number.
If copies are requested, the manufacturer has the right to be paid to issue them.
F THE MACHINE CHANGE OWNER
3.6. I
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 use r on the dangers and limits of liability.
3.7. SUGGESTIONS
The customer should notify the manufacturer if improvements are necessary and where they are to increase an easy understanding of this manual/
Pag.13
Instruction Manual
Edition A
4. LIABILITY LIMITS
The manufacturer cannot be responsible if the machine if used in one following ways , which are classified as inappropriate :
4.1 INAPPROPRIATE USE OF THE MACHINE
It has to be considered inappropriate the use of the machine if :
• the safety ru les 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 surveillance ;
• wrong installation of protective equipment after maintenance or service ;
• 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-observance of the instructions ;
• machine used by uninstructed operators without control of an expert operator ;
• movement or machining of non-typical materials, or oversize and overweight materials compared to the ones indicated ;
• natural calamities, including earthquakes, floods or others which could provoke danger or faults to the machine or its
structures easy to be identified ;
• if electrical , pneumatic or mechanical safety features were partially or completely removed ;
• 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 surveillance to assure the operator
safety or to assure that the machine can run properly .
Pag.14
Instruction Manual
Edition A
5. TYPE OF USE ALLOWED
5.1. MACHINE ADDRESSEE
This machine was design and built to comply a professional use, meaning that, besides the technical knowledge required, it is
necessary to have a specific knowledge to operate the saw to obtain the required goals.
5.2. OPERATOR
The saw operator should have experience on similar type of machine. People with low or none experience must be educated,
followed and watched by a supervisor 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 he avy .
This machine cannot be used by people with handicaps or disables.
5.3. REGULATION
Designing and building this machine we respected the following laws and rules :
• UNI rules
• CEI rules
and more in detail, concerning the safety features (ty pe A and B rules):
• European Community Machine directive 89/392;
• CEI-EN 60204-1 and related rules concerning electric’s, with respect of EC directive 73/23 ;
• EN 292/1
• EN 292/2
If not clearly specified, every component used on this machine was UNI and CEI approved at the time it was bought or
made.
YPICAL USE
5.4 T
This machine was designed and built to cut metallic materials fed by automatic sy stems and with overall size non larger than
the ones listed in the chart below (5.4). The saw can move :
1. movement of the material before and after each cut ;
2. vertical movement of the cutting bridg e ;
3. blade rotation.
All these movements could take place at the same time.
The saw has the following performance :
Instruction Manual
Tab. 5.4
Characteristic MIN MAX
Cutting speed cmq/m 5 140
Material feeding speed Mt./m 30 300
Cutting bridge falling r ate (w/o material) Mt./m 3 30
Bars size mm
Bar weight kg. 1.336 3.528
5.5. LIMITS USING 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 cy cle ;
2. material size and weight must be within the ones above shown.
∅ 10 (manual) ∅ 520
Pag.15
Edition A
5.6. WORKABLE MATERIALS
This machine can cut only me tallic bars, pipe s and tubing . Eve ry other use will is considered inappr opria te use of the ma chine.
5.7. WORK AREA
This machine has to work in industrial environment. 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 .
THIS AREA MUST BE MARKED BY AN APPROPRIATE SIGNAL.
5.8. WORK PLACE
The machine has one work place in front of the control panel.
A second temporary work place is aside the vises, the register them, and to change the blade.
Each work place must be easy to reach when necessary, without interference, even temporary. The machine can work
automatically without operator, who must be present during the manual operations of loading and unloading, and control the
control panel operations.
Pag.16
Instruction Manual
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 gloves and safety glasses.
Edition A
5.9. COMMAND MODES, STOP, EMERGENCY STO P AND OUT OF SERVICE.
5.9.1 Command modes
The saw can be controlled in two different ways:
1. Automatic mode, all automatic commands are enable.
2. 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 cy cle is over.
5.9.1.2. Emergency stop
The emergency stop stops the machine removing tension from the control circuit.
5.9.1.3. Out of service
The saw can be turned out of service removing tension from the control circuit, switching off the main disconnect switch located on the front face of the enclosure. A signal saying “Out of service” must be placed on the machine, and it is operator’s
duty to verify 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 hy draulic 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 disconnect
switch of the machine is turned off.
Instruction Manual
6. TECHNICAL DESCRIPTION
6.1. MACHINE 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 6.1. Base frame
6.1.1. Base frame
6.1.2. Chip conveyor
6.1.3. Indexing (Only for automatic machines)
6.1.4. Vises (Only for automatic machines)
Pag.17
Edition A
6.1.1. Base frame
The machine frame is welded and machined. The material used is Fe 37. In the weldment there are two reservoirs, one for
the coolant liquid, and the second for the hydraulic oil.
The frame is machined to avoid corners or abrasive points that could be dangerous. It is painted with two layers of paint, the
first of which prevent corrosion.
It is machined to be assembled with other machine components.
6.1.2. Chip conveyor
It is standard on automatic ma chines and optional on semi-automatic machines, and it is made by :
• Bended and welded frame with Fe37 steel.
• Hydraulically powered chip screw.
• Protective brackets.
• Chip tank
• Coolant reservoir
The chip conveyor removes chips coming from the band brush and from the cut, taking them outside the machine.
6.1.3. Indexing
Used only for automa tic machines, it includes :
• Index frame welded and machined , and made using Fe37 steel.
• Precision ball bearing screw, to move backward and forward the index frame.
• Steel vises to clamp the material, controlled by hy draulic cylinders.
Pag.18
Instruction Manual
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 material.
6.1.4. Vises
It includes :
• clamping vises made with a gray iron casting G26, machined. Vises are controlled by hydraulic cy linders.
Edition A
UTTING BRIDGE
6.2. C
Pos. Tab 6.2 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 drive assembly
6.2.7 Band brush assembly
6.2.8 Left and right band guide
6.2.9 Cutting servo-control
6.2.10 Wheels
6.2.11 Bland drive motor
6.2.1 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 enoug h sturdiness.
The frame is mechanically machined and painted with anti-corrosion a gents and with nitro paint.
The blade is completely protected where it does not work. Covering 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 covers are not in position.
The blade rotates on the wheels, one of which is driven, and the other one is idler.
6.2.2 Guiding columns
The columns guide vertically the cutting bridge movement. They are made with chrome bars, hardene d and grinded.
6.2.3 Columns connection
Made using a Fe52 steel square tube, the columns connection connects and makes the guiding columns sturdy. I t is fastened
to the columns through two locknuts. The lifting cylinder is fastened to the center of the connection tube.
Pag.19
Instruction Manual
6.2.4 Lifting cylinder
This is an hydraulic cylinder, with chrome rod and lapped cy linder. The lifting cylinder is a double effect cy linder. The head is
fastened to the columns connection, and the final end of the rod is fastened to the cutting bridge using a locknut.
6.2.5 Blade tension assembly
This assembly has to keep the blade at the right tension when the machine is running. There is a steel slide which support the
idler wheel shaft. An hydraulic cy linder, that works on the slide, keeps the band in tension. A limit switch protects the machine turning immediately off the machine if the blade brakes.
6.2.6 Band drive assembly
The band is powered by a n AC motor which automatically reg ulates the rotation speed. Using two pulley s and three V-be lts,
the motor makes the speed reducer turning. On the other end of the reducer there is the drive wheel, that is fastened to the reducer using a collet locking .
Edition A
6.2.7 Band brush assembly
A band brush is powered by an hy draulic motor, and it cleans the teeth removing the chips.
6.2.8 Left and right band guides.
The band guides have to :
• straighten the blade coming out the wheel, and keep it vertical helping the blade insertion between the inserts.
• protect the part of the blade that is not cutting .
Left guide arm : Moves horizontally on guides machined on the bridge, and it is moved by the movement of the vise.
Right guide arm : Fixed on the cutting bridge. It supports the cutting servo control.
Both the guide arms have carbide inserts.
6.2.9 Cutting servo-control
The Cutting servo-control automatically controls the saw feed rate. A servovalve has an extension which touches the blade
back, and registers the efforts to cut the piece. The servovalve modifies the feed rate for :
• shape of piece
• material hardness
• blade wear condition
The operator, reading on the knob, is allowed to change the preferred feed rate.
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Instruction Manual
6.2.10 Wheels
Made using cast iron G26, and lathe machined. They are fastened as follow :
• the idler wheel is fastened on the band tension a ssembly, and it turns on ball bearings ;
• the band drive wheel is fastened using a collect locking on the reducer shaft.
The wheels diameter is larger the n the maximum material height that can be cut by the saw..
6.2.11 Band drive motor (Exhibit A07)
The machine mounts a self-cooling AC electric motor. On the shaft there is a three throats pulley, on which there are 3 Vbelts to connect motor and reducer
Edition A
6.3. HYDRAULIC POWER UNIT
The power unit has a double location inside the machine frame. Underneath the infeed roller table there is the oil reservoir,
and under the outfeed roller table there are all the solenoid valves. The power unit is made by :
Pos. Tab 6.3. Hydraulic power unit
6.3.1 Motor-pump assembly
6.3.2 Oil reservoir
6.3.3 Solenoid valves
6.3.1 Motor-pump assembly
Electrical motor and pump are connected by an elastic coupling.
6.3.2 Oil reservoir
It is in the machine fra me, and it has a maximum and a minimum level indic ators, and a suc tion filter. On the left side of the
infeed roller table there is a plug which allows to refill the reservoir. The hy draulic system has 2 filter s :
• a 250 micron 45 litres suction filter
• a 60 micron 45 liters outflow filter
These two filters have to be removed when changing the oil for the first time (after 500 working hours), washed using trichloroethylene and dried blowing air.
6.3.3 Solenoid valves
The solenoid valves are mounted on blocks, and the control the hydraulic movements.
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Instruction Manual
Edition A
6.4. ELECTRICAL SYSTEM
6.4.1 Control console
The control console is on the upper part of the control enclosure, and all the push-buttons and switches are mounted on it.
There is a 5” monitor, which displays the control commands.
6.4.2 Control enclosure
It is made bending metal sheets and it complies the IP55 standards. I nside there is the electrical panel which supports all the
electrical devices (relays, circuit breakers,...) comply ing the CEI 60204.1 standards.
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Instruction Manual
Edition A
7. MACHINE PROTECTIONS
This machine is entirely protected where it can be dangerous. Despite of this, there are some parts that cannot be protected,
and where the operator must never work. The biggest of these parts is where the blade touches material.
There is a sticker close to every part which is not completely safe, to show to the operator that he should be extremely conscious.
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