GRIGGIO GF 21, GF 27, GF 35 Instructions Manual
DESYS srl
BORING MACHINE Mod. GF 21G
GF 27G
GF 35G
SPARE PARTS INSTRUCTIONS
GRIGGIO S.p.A.
WOODWORKING MACHINERY
Via Ca’ Brion, 40 - 35011 Reschigliano (PD) ITALY
Tel. 049/9200920 Fax 049/9201433
http://www.griggio.com E-Mail:info@griggio.com
GRIGGIO S.p.A.
WOODWORKING MACHINERY
MODEL
BORING MACHINES
GF21 spindles
GF27 spindles
GF35 spindles
MACHINE N°
YEAR OF MANUFACTURE
GRIGGIO S.p.A. WOODWORKING MACHINERY
Via Ca’ Brion, 40 - Reschigliano (PD) ITALY
Tel. 049. .9200920
Fax 049. .9201433
C.A.P. 35011
http://www.griggio.com
E-Mail:info@griggio.com
GRIGGIO S.p.A.
WOODWORKING MACHINERY
1
WE WOULD LIKE TO THANK YOU FOR
HAVING CHOSEN ONE OF OUR PRODUCTS
This manual contains all information, advice and warnings that our technicians deemed
essential to operate the machine properly.
It also contains routine maintenance rules, so that your machine will always be kept in
perfect working order.
We advise you to read this manual entirely before operating the machine for the first
time.
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
INDICE
1. CONFORMITY CERTIFICATE ......................................................................................... 4
2. SAFETY AND GENERAL SAFETY INFORMATION ........................................................ 4
2.1 USAGE AND MAINTENANCE ADVICE ................................................................. 4
2.2 MACHINE IDENTIFICATION ................................................................................. 4
3. OPERATIVE NOTES ....................................................................................................... 5
4. DESCRIPTION OF THE MACHINE .................................................................................5
4.1 APPLICABLE TOOLS ............................................................................................5
4.2 MACHINE PARTS ................................................................................................. 6
5. SUPPLIED EQUIPMENT ................................................................................................. 6
6. SAFETY DEVICES .......................................................................................................... 7
7. INDIVIDUAL SAFETY DEVICES ...................................................................................... 8
8. TECHNICAL SPECIFICATIONS ......................................................................................8
8.1 WEIGHT ................................................................................................................8
8.2 OVERALL SIZE ..................................................................................................... 8
8.3 MAX. SIZE OF PIECE TO BE BORED .................................................................. 8
8.4 ELECTRICAL CHARACTERISTICS ....................................................................... 8
8.5 TABLE SIZE .......................................................................................................... 9
8.6 INTERAXIAL DISTANCE BETWEEN SPINDLES .................................................. 9
8.7 NUMBER OF SPINDLES ....................................................................................... 9
8.8 INTERAXIAL DISTANCE BETWEEN FIRST & LAST SPINDLE ............................ 9
8.9 SPINDLE REVOLUTIONS ..................................................................................... 9
8.10 MAX. BORING DEPTH .......................................................................................... 9
8.11 WORKING PRESSURE ......................................................................................... 9
8.12 AIR CONSUMPTION ............................................................................................. 9
9. AUTHORISED USAGE .................................................................................................... 9
9.1 MATERIALS .......................................................................................................... 9
9.2 IMPROPER USAGE .............................................................................................. 9
10. SHIPMENT .................................................................................................................... 10
11. MACHINE SIZE .............................................................................................................10
12. INSTALLATION .............................................................................................................11
13. WORKING AREA ........................................................................................................... 11
14. ASSEMBLY AND PRELIMINARY STEPS TO OPERATE THE MACHINE
FOR THE FIRST TIME ................................................................................................... 12
15. CONNECTING THE MACHINE TO EXTERNAL ENERGY SOURCES .......................... 12
15.1 CONNECTION TO POWER SUPPLY MAINS .....................................................12
15.2 PNEUMATIC CONNECTION ............................................................................... 12
15.3 CONTROL PANEL ..............................................................................................13
16. CHECKS AND ADJUSTMENTS .................................................................................... 14
16.1. DISCONNECTIONG PROCEDURE ....................................................................14
16.2. PREVENTION CHECKS ...................................................................................... 14
16.3 BORING DEPTH ................................................................................................. 14
16.4 HOW TO ADJUST HEAD PARALLELISM ........................................................... 15
16.5 HOW TO POSITION SPINDLEHEAD HORIZONTALLY AND VERTICALLY……..15
16.6 HOW TO USE REFERENCE STOPS FOR STANDARD 0°-90°WOODWORKING …16
16.7 HOW TO USE EXTENSION FENCE .................................................................... 16
GRIGGIO S.p.A.
WOODWORKING MACHINERY
16.8 HOW TO USE REFERENCE PIN TO BORE SERIES OF HOLES ON LARGE
PIECES (OPTIONAL)…………………………………………………………………...17
16.9 HOW TO USE TRIANGULAR FENCE FOR 45° BORING AND SPLINE
(OPTIONAL)………………………………………………………………...………18
16.10 WOODWORKING EXAMPLES…………………………………………………….,….19
17. HOW TO START THE MACHINE .................................................................................. 21
17.1 WORKING CYCLE .............................................................................................. 21
18. MAINTENANCE ............................................................................................................ 21
18.1 MACHINE CLEANING (DAILY) ........................................................................... 21
18.2 RAILS CLEANING (WEEKLY) ............................................................................. 21
18.3 KINEMATICS CLEANING AND CHECKS (MONTHLY) ...................................... 21
18.4 EXTRAORDINARY MAINTENANCE .................................................................. 21
19.COMMON FAILURES – CAUSES AND SOLUTIONS .................................................... 22
19.1DRILLS ARE NOT TURNING……………………………………………………………..22
19.2 ENGINE IS RUNNING BUT DRILLS ARE NOT TURNING ................................. 22
19.3 BORED HOLE IS NOT PRECISE ....................................................................... 22
20. FAILURES THAT MIGHT OCCUR DURING MACHINE WORKING CYCLE…………….23
20.1 DRILLS LEAVING SCORCH MARKS ................................................................. 23
20.2BORED PIECES ARE NOT SET AT A 90° ANGLE TO TABLE………………………23
20.3 HEAD CANNOT ROTATE PROPERLY ............................................................... 23
20.4 HOLD DOWN CLAMPS CANNOT CLAMP WOOD PIECE ................................. 23
21 A. NOISE LEVEL ............................................................................................................ 23
21 B. DUST EMISSION ....................................................................................................... 23
22. PNEUMATIC SCHEME .............................................................................................. 24
23 A. ELECTRICAL SCHEME FOR GF21, GF27 (WITH ONE ENGINE) ............................. 24
23 B. ELECTRICAL SCHEME FOR GF 35 (WITH TWO ENGINES) ................................... 25
24. MACHINE IS PUT OUT OF COMMISSION ................................................................ 26
25. GUARANTEE CERTIFICATE ..................................................................................... 27
26. SPARE PARTS CATALOGUE…………………………………………………………...….29
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
1. CONFORMITY STATEMENT
Griggio S.p.A. declares that this Boring machine has been manufactured accurately, by using the best
techniques available to manufacture a quality product. We also declare that our boring machine com-
plies with EEC 89/392 Machines Guideline, as well as with the following standards:
EN 292/1
EN 292/2
EN 60240
EN 60240/1
EN 73/23 CE
IEC 408
The machine is hence commercialised with conformity mark:
GRIGGIO S.p.A.
Via Cà Brion,40 - 35011
Reschigliano (PD) ITALY
The President
2. SAFETY AND GENERAL SAFETY INFORMATION
2.1 USAGE AND MAINTENANCE ADVICE
In this manual we have considered all routine maintenance operations.
We advise you not to carry out any other working, repair or intervention than the ones envisaged in this
manual.
We suggest that you keep this manual with care and in a location where it can easily be found and consulted by the operator.
2.2 MACHINE IDENTIFICATION
The machine can be identified by means of the information written on the plate located in the front of the
machine on the left-hand side. When spare parts are ordered or advice is required to operate the machine or to carry out maintenance operations, always indicate the machine’s model number written on
the plate, as well as voltage and nationality.
It is absolutely forbidden to remove the plate or to change the information written on it.
On the Boring machine described in this manual, the following plate has been attached:
GRIGGIO S.p.A.
WOODWORKING MACHINERY
3. OPERATIVE NOTES
WOODWORKING MACHINES CAN BE DANGEROUS
1) To operate the machine safely and correctly, follow the indications contained in this manual care
fully and scrupulously.
2) The machine will have to be operated only by personnel who is both qualified and over 18. People
responsible for safety should make sure that the machine operator has read and fully understood all the
information contained in this manual.
3) Maintenance interventions must be carried out only by personnel who is both qualified and of age.
4) Personnel responsible for periodical and extraordinary servicing must have a good knowledge of
mechanics and electronics.
5) Keep away from any moving part in the machine.
Never touch the spindles and /or the drills when the machine is operational.
6) Never superimpose wood pieces to be worked. Always bore one piece at a time, after having adjusted the machine correctly.
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REMOVING OR TAMPERING WITH SAFETY DEVICES MAY CAUSE SERIOUS ACCIDENTS. IT IS
FORBIDDEN TO REMOVE, EXCLUDE OR MODIFY SUCH DEVICES. PERIODICAL CHECKS
MUST BE CARRRIED OUT TO MAKE SURE THAT SAFETY DEVICES ARE ALWAYS IN GOOD
WORKING ORDER. ANY DEFECT OR POSSIBLE PROBLEM IS TO BE DEALT WITH IMMEDI-
ATELY.
4. DESCRIPTION OF THE MACHINE
Our Boring Machines have been manufactured to make a series of holes at a fixed 32-mm distance between centres on wooden pieces (with maximum precision).
The head has its fulcrum on the machine table and it can be tilted until a 90-degree angle. The pieces to
be bored are fed by the operator, who places them on the machine table. The operator will carry out the
required adjustments by pressing the control pedal before locking the pieces into place with the relevant
hold down clamps and starting boring operations.
The following parts make up the machine:
• A steel frame structure
• Spindlehead unit with transmission and drill spindles with quick-change seat (standard).
• Hold down clamps unit to clamp the piece to be cut in a vertical position.
• Pneumatic system for head positioning and head feed.
• Back stops so as to obtain the same vertical and horizontal boring distance
• Crank mechanism to adjust spindles height, equipped with mechanical counter and quick-depth de-
vice to adjust hole depth from 0 mm to 100 mm.
4.1 APPLICABLE TOOLS
Quick-change spindle drills with a 10mm-diameter shank L=20mm.
Drills up to 40mm-diametre outside the rack can be used; 100 mm maximum working length (attachment
is not taken into account).
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
4.2 MACHINE PARTS
1) Electric power line light
2) Switch to make the engine operational
3) Emergency pushbutton
4) Machine clamping
5) Lever-operated valve for head overturning piston.
6) Piston adjustment and drills feed speed
7) 45°Block pin
8) Back stops
9) Tilting degree dial for spindlehead
10) Fast-positioning safety hold down clamps
11) Clamping handle for hold down clamps rail
12) Table limiters
13) Clamping handle for limiters rails
14) Limiters exclusion device
15) Electric control board
16) Rack rotation clamping handle
17) Control handle for drills height from table
18) Drills depth adjustment for piece to be bored
19) Reference pin to repeat sets of holes (optional)
20) Lubrication-filter-regulator air unit
21) Drills feed cylinder
22) Spindlehead
23) Engine
24) Pneumatic control pedal
25) Electrical main switch
5. SUPPLIED EQUIPMENT
The machine comes with the following equipment to adjust the machine itself:
- 45-degree head position clamp
- Protractor scale to position the boring head
- Quick-positioning safety hold down clamps
- 4 T.E. wrenches sizes 6/7, 10/11, 12/13, 16/17.
- 7 hexagon ring wrenches sizes 2.5-3-4-5-6-8-10
- 5 quick-change bushes for cylindrical-shank drills 10 mm in diameter
- 3000mm extension fence with millimetrical scale and 4 oscillating stops
The following equipment is available on request:
- 45° Triangle for frame construction
- Central spline for 90° frames
- An additional extension fence with millimetrical scale (3000 mm max)
- Additional oscillating stops for extension fence
- Reference pin for line boring (2 pins maximum)
- Additional quick-change bushes for cylindrical shank drills 10 mm in diameter
GRIGGIO S.p.A.
WOODWORKING MACHINERY
7
6. SAFETY PROTECTION
The main risk is due to the revolving drills. To reduce this risk to the minimum, our machines have been
equipped with the following safety devices:
1) Emergency Pushbutton
It is located on the control board in the front part of the machine. When it is pressed, all machine movements are halted immediately.
2) Set of Plates
They contain an accurate description of safety precautions and indications on how to operate the machine and make it possible to identify the machine parts. One of these plates contains the identification
data and the serial number of the machine itself.
3) Side Protections
They prevent the operator from inserting his/her hands accidentally into the machine when the spindlehead is moving.
4) Safety hold down clamps (patented)
They remain either on the machine table surface or on the piece to be worked that has already been positioned, thus preventing the operator from accidentally placing his hands under one of them.
5) EL Safety Device
No-return coil to prevent accidental starting of the machine.
CAUTION SYMBOL: ALL OPERATIONS MARKED WITH THIS SYMBOL ARE
DANGEROUS FOR THE OPERATOR. AS A RESULT THE OPERATOR MUST
PAY THE GREATEST ATTENTION WHILE CARRYING THEM OUT.
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
7. INDIVIDUAL SAFETY DEVICES
Although safety devices used are valid, dangerous situations might occur resulting from:
- FALLING OR FLYING WOOD SPLINTERS WHILE PIECE IS BEING WORKED
- CLOTHING BEING TRAPPED IN MOVING PARTS OF THE MACHINE
- FIRE DANGERS
- ELECTRIC SHOCK DANGER
- RISK OF NOISE-RELATED DAMAGES
To prevent any risk occurring during positioning, installation, adjustment, usage, periodical and extraordinary maintenance operations, we advise you to wear:
- gloves (to handle machine parts, components and while replacing drills)
- anti-slip and anti-crush shoes
- goggles or face shields to protect against flying chips and splinters while the piece is being worked
or when the machine is being cleaned
Clothing must also be suitable to prevent
- trapping danger
- dragging danger
- crushing danger
- slipping danger
For further information and advice, please read chapter 3 “OPERATIVE NOTES”
8. TECHNICAL SPECIFICATION
8.1 WEIGHT
NET WEIGHT
Version. GF 21 320 Kg
Version. GF 27 360 Kg
Version. GF 35 444 Kg
8.2 OVERALL SIZE
Version. GF 21 1100 x 780 x 1300 mm
Version. GF 27 1200 x 780 x 1300 mm
Version. GF 35 1350 x 1040 x 1250 mm
8.3 MAXIMUM SIZE OF PIECE TO BE BORED
Version. GF 21 850 x 3000 mm
Version. GF 27 990 x 3000 mm
Version. GF 35 1308 x 3000 mm
Maximum thickness of piece to be drilled is 90 mm (all machine models)
8.4 ELECTRICAL CHARACTERISTICS
The electrical characteristics of the machines are:
- Supply voltage: 220/400 – 230/460 Volts
- Frequency: 50/60 Hz
- Number of current phases: 3
- Power: 1.5 kW (n.2 Hp) (Versions GF2132 GF2732)
2 X 1.5 kW (n.2 X 2 HP) (Version GF3532 – 2 Engines)
- Single-phase 220V (optional). For other voltage values please contact us.
GRIGGIO S.p.A.
WOODWORKING MACHINERY
8.5 TABLE SIZE
Version GF 21 900 X 380 mm
Version GF 27 1050 X 380 mm
Version GF 35 1360 X 410 mm
8.6 INTERAXIAL DISTANCE BETWEEN SPINDLES
The interaxial distance between spindles is 32 mm.
8.7 NUMBER OF SPINDLES
Version GF 21 21 spindles
Version GF 27 27 spindles
Version GF 35 35 spindles
8.8 INTERAXIAL DISTANCE BETWEEN FIRST AND LAST SPINDLE
Version GF 21 640 mm
Version GF 27 832 mm
Version GF 35 1088 mm
8.9 SPINDLE REVOLUTIONS
Spindles revolutions are …2800 r.p.m. at 50 Hz
Spindles revolutions are …3300 r.p.m. at 60 Hz
8.10 MAXIMUM BORING DEPTH
Maximum boring depth is …100 mm.
8.11 WORKING PRESSURE
Working pressure is … 6/7 bar
8.12 AIR CONSUMPTION
Air consumption is …10L/Cycle
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9. AUTHORISED USAGE
9.1 MATERIALS
This boring machine has been designed and manufactured to bore holes in the following materials:
- heart-wood
- M.D.F.
- Chip-wood boards, laminated wood, ennobled wood etc.
Maximum board thickness is 82 mm with maximum size indicated in paragraph 8.3
Other materials than the ones indicated above can be worked only after having received written approval by machine manufacturer. In particular it is forbidden to work materials containing toxic substances or substances that are hazardous for operator’s health and safety. It is also forbidden to bore
metals or substances that might impair the machine good performance of might cause fire or explosions.
- Any modification to the machine is forbidden without the written approval by the machine manufacturer.
- It is forbidden to tamper with the machine safety devices
9.2 IMPROPER USAGE
Any operation that does not comply with the indications given in this manual is to be regarded as improper usage.
Moreover:
WE ADVISE YOU NOT TO: lay tools against or on the machine during machine installation, usage or
maintenance operations for any reason whatsoever.
WE ADVISE YOU NOT TO: get on the machine or on any of its parts.
The manufacturer cannot be held responsible for any damage caused to people, animals, or objects
resulting from improper usage of the machine.
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
10. SHIPMENT
This boring machine is packed in a wooden box and/or in a cardboard and nylon box.
Machine handling is possible with:
- fork-lift trucks
- bridge cranes
- pallet trucks
Weight is indicated in paragraph 8.1 and hoisting points can be seen in the picture below. When the machine is handled it is necessary to make sure that the surrounding area is free from obstacles. If the machine is stored, it must be kept in a dry place, protected from rain, snow or dampness. During all handling operations, we advise you to pay great attention in order to prevent any damage to people, things
or to the machine itself.
11. MACHINE SIZE
Mod.
GF21
Mod.
GF27
Mod.
GF35
A B C
1100 780 1300
1200 780 1300
1480 1040 1250
Pict. 5
GRIGGIO S.p.A.
WOODWORKING MACHINERY
11
12. INSTALLATION
The machine must be installed on a surface strong enough to sustain its weight so as to prevent harmful
vibrations from impairing the good performance of the machine.
To guarantee maximum machine efficiency and safety, the surface where the machine is located must
be made of well-levelled concrete. If the surface does not meet such requirements, we advise you to
make a suitable one.
Place the machine in a room, in a suitable position to be used and to be easily connected to
- power supply network
- compressed air network
- suction plant
The location where the machine will be placed must be equipped with suitable lighting to execute working or maintenance operations.
13. WORKING AREA
To be able to use the machine properly, the areas indicated in the picture below must be left free.
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GRIGGIO S.p.A.
WOODWORKING MACHINERY
14. ASSEMBLY AND PRELIMINARY STEPS TO OPERATE THE MACHINE FOR
THE FIRST TIME
When the machine is delivered, it is partially assembled. It is therefore necessary to assemble those
pieces that are delivered disassembled for packaging reasons.
Before starting assembling operations, the purchaser must make sure that all machine parts are intact
and have not been damaged during shipment.
In particular, we advise you to check the most fragile components, such as electrical or mechanical
parts, pneumatic tubes or the machine’s safety devices.
When assembly operations are over, the machine must be cleaned by removing protective oil, so that
wood pieces do not get stained while being worked.
CAUTION: THE MACHINE IS SUPPLIED WITHOUT A SUCTION PLANT. TO KEEP DUST CONCENTRATION BELOW THE T.L.V. SET IN THE COUNTRY WHERE THE MACHINE IS LOCATED, THE
USER MUST INSTALL A SUITABLE SUCTION PLANT ACCORDING TO USAGE, MATERIAL AND
FREQUENCY OF USE.
Saw dust disposal
Saw dust and work scraps disposal is to be carried out in compliance with the regulations in force in the
country where the machine is used. We advise you to ask the relevant bodies of your country for the
relevant legislation so that you know what steps are to be taken.
15.CONNECTING THE MACHINE TO EXTERNAL ENERGY SOURCES
After assembling and installing the machine correctly, the machine has to be connected to:
- power supply mains
- compressed air system
15.1 CONNECTING THE MACHINE TO POWER SUPPLY MAINS
Engine (or Engines) voltage and frequency are indicated on the plate located on the engines.
The user’s electric installation must comply with CEI 64.8 (CENELEC HD 384, IEC 364-4-41) standards.
The electric installation must have:
- Equipotential earthing system
- Automatic protection devices installed on the machine and connected so as to guarantee that the
machine is automatically cut off from power supply in compliance with the above-mentioned standards.
Connection to the power supply is made with a three-phase plug (or with a single-phase plug according
to the board required).
Wire for the earthing system is yellow-green.
Allowed oscillation of electric voltage is +/- 10%
Connect the machine cable to the power supply mains.
Switch the machine on and make sure the machine‘s engines are revolving clockwise. Make sure that
spindles rotation matches the direction indicated on the spindlehead. (R= right L= left). If rotation direction does not match, invert connection cables to the engine.
Refer to the electrical diagrams enclosed in this manual.
15.2 PNEUMATIC CONNECTION
1) Connect the machine to the compressed air system and make sure that the connection tube is compatible with the one provided alongside the machine itself and located on the lubrication-filter-regulator
unit at the back of the machine, in the lower left-hand side.
Pressure should range between 6 and 7 bar maximum.
1) The lubrication-filter-regulator unit is made up by:
A) A filter, whose function is to purify air from dust and humidity that might damage the valves or gaskets in pneumatic cylinders.
GRIGGIO S.p.A.
WOODWORKING MACHINERY
B) A regulator that adjusts compressed air working pressure by keeping this value within the abovementioned limits.
C) A lubricator that puts a determined amount of oil into the system to lubricate cylinders, valves, gaskets and moving parts.
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15.3 CONTROL PANEL
The control panel is located on the left-hand side of the machine:
EMERGENCY PUSHBUTTON TO HALT THE ENGINE (THE BUTTON IS
1
NOT AUTOMATICALLY RELEASED)
PUSHBUTTON WITH PILOT LIGHT TO MAKE EN-
2
GINE OPERATIONAL
1 - By pressing this button all electrical functions of the machine are switched off.
2 - To switch electric functions on, turn the mushroom
pushbutton in the direction indicated by the arrows.
1 - It gets the engine ready to be started and hence it gets
the spindles ready to rotate during the working cycle.
ON/OFF POWER INDICA-
3
TOR PILOT LIGHT
MAIN SWITCH 1 - It the switch is turned on power is supplied
4
HEAD UNIT OVERTURN-
5
ING VALVE
FEED SPEED ADJUST-
6
MENT
1 - If the light is on power is available.
2 – If the light is off power is not available.
1 – If the valve is switched on the head-unit is overturned
1 – It adjusts drills boring feed speed
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