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Series Ergonomic Ergonomic 340.278 DGH Operating instructions Before transporting and using the machine, please read the instructions thoroughly! Seriové číslo / Serien Nummer / Serial Number ___________________...
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Ergonomic 340.278 DGH Serial number: 011 - 999 Manufacturer BOMAR, spol. s r.o., Těžební 1236/1, 627 00 Brno Product data Determination: for cross dividing and cutting of rolled and towed bars and profiles made of steel, stainless steel, non-ferrous metals and plastics...
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If the equipment is installed without safety equipment offered by BOMAR, spol. s ro or its agents and used by the customer (or buyer) then EC declaration loses validity. EC Declaration of conformity is valid only if customer (buyer) installed the BOMAR safety equipment with the machine or with some other with equivalent safety device in accordance with current applicable regulations and standards.
Content BEZPEČNOSTNÍ POKYNY / SAFETY NOTES / SICHERHEITSHINWEISE ..............11 1.1. Machine determination........................13 1.2. Protective clothing and personal safety ..................13 1.3. Safety notes for machine operator ....................15 1.4. Safety notes for the servicing and repairs .................. 17 1.4.1.
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3.3.4. Setting of the optimal span of the guiding cubes ............ 59 3.3.5. Cutting speed adjustment ..................... 59 3.3.6. Speed adjustment of the arm lowering ..............59 3.3.7. Setting the type of cooling ..................... 61 3.3.8. Pressure adjusting to the cut ..................61 3.3.9.
The operating instructions must be read by any person, who gets in touch with the machine during transportation, installation, using, servicing, reparation, stocking or removal! Attention! The operating instructions must be available at the machine position! Keep the operating instructions in a good condition! The operating instructions include relevant information.
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Always wear ear protection! Most of the machines emit up to 80 dB and may damage your hearing. Do not wear jewellery and always tie back long hair! Moving machine parts can catch jewellery or loose hair and may cause serious injuries. Manual version: 1.01/ Febr.
Operate the machine only when you are fit enough to work. Illnesses or injuries diminish concentration. Avoid machine work, which may compromise the safety of you and your colleagues! Attention! Mind the safety signs on the machine. Do not remove or damage them! 1.3.
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Take off any spilt water or oil from the floor and dry it immediately to avoid a possibility of injury. Do not touch the cooling liquid with bare hands! Do not adjust the cooling liquid nozzle if the machine is running. ...
Any use of the saw, accessories or machine parts other than that intended by BOMAR, spol. s r.o. company is not permitted. The guarantee on this product will be lost afterward and BOMAR, spol. s r.o. takes no responsibility for damage caused.
1.5. Safety notes for the cooling Attention! When handling the coolant always keep to the work safety directives and instructions of the manufacturer. When handling cooling agents always wear safety fluid-proof gloves! Wear protective goggles! Cooling liquid can get in contact with your eyes and ...
1.6.2. Arm cover If the cover is opened during operation, the limit switch is opened and the band saw is stopped. The machine cannot be run with the arm open even in the service mode. Make sure the arm cover is closed before starting the machine!
1.6.3. Saw band covers These three covers cover the band of the saw - from the moveable guiding cube to the arm from the jaw of the vice to the arm (both sides) Never turn the band drive on, if these covers are not mounted Manual version: 1.01/ Febr.
1.6.4. Saw band stretching and rupture inspection This device checks the saw band stretching and causes an immediate machine shut – down in case the band ruptures. The device contains a limit switch. Its setting is described in the chapter Machine maintenance.
1.7. Umístění štítku stroje / Maschinenschild position / Position of the machine label Štítek stroje/ Maschineschild Machine label Manual version: 1.01/ Febr. 2017 Manual rev.:...
2.1. Technická data / Technische Daten / Technical data Hmotnost stroje / Maschinengewicht / Machine weight: Hmotnost / Gewicht / Weight 410 kg Rozměry stroje / Maschinengröße / Machine size : Délka / Länge / Lenght 2000 mm ...
2.4. Transportation and stocking 2.4.1. Conditions for transportation and stocking Follow the recommendations of the manufacturer for transportation and stocking! If the recommendations are not kept, damage may occur to the machine. Don’t use a forklift truck for handling the machine, if you do not have ...
2.5. Activation 2.5.1. Machine working conditions Keep the conditions of the manufacturer for machine operation! If the recommendations are not kept, damage can occur to the machine. The manufacturer warrants the correct function of the machine for these conditions: At air temperature from 10°C to 40°C; the temperature average during 24 ...
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Move the length stop up to the saw band. Set the measuring unit to zero value. Fix the guiding pole of the length stop in place with a screw, which is put into the opening on the top side of the vice.
2.5.4. Attachment of the cooling liquid tub Put the tub for the dripping off of the coolant on the pedestal from the back side of the saw Attach the hose for the coolant removal to the outlet of the tub and put its other and immerse its other end into the coolant tank.
Remove the nut from the handle of the hand wheel, place it into the hex opening on the back side of the wheel and fasten the handle. 2.5.6. Machine installing and leveling Check the floor supporting capacity before installing the machine. If the floor capacity does not meet the requirements, you must ready the necessary base for the machine.
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Upon the first start-up, the devices and distribution system are filled up with oil, and therefore the oil level in the tank drops. If the level drops below the minimum value, you must refill the oil after switching off the device. After multiple start-up, the hydraulic unit is ready for operation.
2.5.8. Filling the reservoir with hydraulic oil Oil regulations and recommendations of the manufacturer in the technical documentation (appendix) are to be carefully observed. For standard power packs we recommend the oiltype OH-HM32 (DIN 51524) of all known oil manufacturers. Power packs have to be filled up with clean, pre-filtered oil! The purity of the hydraulic fluid must correspond to the class 10 NAS 1638 (reachable with filter ß...
2.5.10. Electrical connection Attention! Only a qualified professional must carry out the servicing and repairs of the electric equipment! Take special care during work with the electrical equipment. High voltage accident can have fatal consequences! Always follow instructions for work safety. Electrical parameters of the machine: Service voltage: ~ 3×400 V, 50 Hz, TN-C-S...
2.5.12. Inspection of the connection to the electrical network Attention! When you connect the machine to the electrical network insure correct connection of all phases! THE HYDRAULIC AGGREGATE ENGINE MUST NOT BE OPERATED IN REVERSED MODE FOR MORE THEN 10 SECONDS!!! 2.5.13.
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Open and close the main vice. Turn the saw frame of the band saw from one outer position to the other outer position. Raise the saw frame to the top position and than lower the saw frame to the lowest position. Start the machine with the cooling pump and let it run without load until the cooling system will be filled with cooling liquid.
The important factor for selection of the tooth system is the length of the cutting canal with respect to the size of the product. BOMAR recommends variable tooth system for its band saws. Constant tooth system – the saw band has a constant tooth pitch all over its length.
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When cutting small pieces run the band until approximately 300 cm of material has been cut. When cutting large pieces run the band for approximately 15 minutes. When the band has been run, increase the lowering speed of the arm to normal. The running in of the saw band avoids micro chips on the cutting edges of a new saw band ensuing from first excessive stress.
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SHAPED MATERIAL (D , S = mm) Note: Table shows tooth system selection for cutting one piece of the profile. For cutting of more pieces of the profiles (bundle), you must think of the size of the wall as double size of the wall of one profile (that means, size „S“ equates to 2×S). In table, there are tooth systems constant and variable. Tooth system (Z Size of the wall Outer diameter of the profile D...
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In spite of the proposals above, consider your supplier’s recommendations and ask him for professional advice although the manufacturers often recommend their own saw bands to you.
3.1. Starting the band saw and switching on the safety circuits Turn the main switch into position 1 –ON. The main switch is located on the side of the control panel Switch on the Safety circuit of the saw. The safety circuit will run a check on all safety switches.
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TOTAL – STOP button Immediately stops the machine in a case of emergency. Safety circuit Press button to turn on the safety circuit START Starts the drive of the saw band.. STOP Stops the drive of the saw band Arm height setting According to the scale on the control panel, you can limit the maximum frame top position at the working (semi-automatic cycle).
3.3. Machine control 3.3.1. Semiautomatic cycle Open the vice jaws by hand wheel. Set the length stop to the desired length of the material. Set the desired cutting angle. Insert the material and pull it to the length stop. Move the vice jaw to about 5 mm from the material For a longer distance movement of the vice jaw use the rapid shift option: a) loosen the arresting lever of the moveable jaw of the main vice b) move the jaw to the required distance...
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c) tighten the arresting lever For shifting the jaw for a shorter distance use the hand wheel. Lift the saw arm to the maximum upper position and set the maximal upper position of the arm for working (semiautomatic) cycle using the button on the control panel.
After pressing START : a) The vice automatically clamps the materiál b) The drive of the saw band is turned on and the saw arm starts moving to into cut After the material cutting, the saw frame is lifted to the top position, the saw band drive is stopped and the vice is opened.
3.3.3. Setting of the cutting angle The band saw Ergonomic 340.278 DGH allows cutting under angles from -45° to 60°. For an easier setup of common angles, there are latches on the turning console at every 15° angle increment. Locking in the latches can be felt when turning the saw frame by hand.
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Picture Procedure Tighten the clamping lever of the console. Loosen the clamping lever of the vice.
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Picture Procedure angle < 0° Shift the vice according to the set angle of the cut. For negative angles move the angle ≥ 0° vice to the right, for positive and zero angles to the left. Manual version: 1.01/ Febr. 2017 Manual rev.:...
3.3.4. Setting of the optimal span of the guiding cubes For reaching a smooth and accurate cut it is necessary to move the left guiding cube as close to the cut material as possible. Loosen the lever of the left guiding lath and move the left part of the saw band guide so that the edge of the left guiding cube will be as close to the material as possible.
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To allow the arm to move downwards (into cut) it is necessary to release the valve. Manual version: 1.01/ Febr. 2017 Manual rev.:...
3.3.7. Setting the type of cooling The required type of cooling can be chosen using knob no. 3 o the control panel. Cooling with liquid: The cooling pump runs, even if the pump is turned off (washing) The saw band runs without cooling. The cooling is turned on together with the saw band drive Cooling with oil vapor- Microniser (optional equipment) Saw band runs without cooling.
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Adjusting the down-feed regulator is performed with regulating wheel on the guiding cube. Screw on the wheel, the pressure is increased. Screw off the wheel, pressure is lowered. Picture Sequence One visible neck Solid material over 300 mm Two visible necks Solid material to 100 -300 mm Three visible necks Pipes and shapes material with...
3.3.9. Laserliner – optional accessory The device is used to ascertain exact position of the material cut before cutting. The cut is indicated by the laser beam projected on the surface of the prepared material.. Set laserliner so that the line beam looks like image The switch for Laserliner is located on the control board.
3.3.10. Device for regulation of clamping pressure (optional accessory) The hydraulic pressure device is determined for pressure setting on the main vice and feed vise. Warning ! Because the hydraulic pressure equipment pressure 2,2 – 4 MPa, loosen the screws with caution! Instruction for adjustment of clamping pressure Release the locknut of the control screw at the pressure valve Adjust the clamping pressure to the required value using the control screw.
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When turning the pressure valve clockwise the pressure increases. When turning the pressure valve counterclockwise lowers the pressure. The indicator at the manometer at the device for clamping pressure adjustment indicates the set value. The recommended pressure value is between the values defined through the green arrows at the manometer at the device for controlling of the clamping pressure.
If you are cutting long pieces (for example rods, tubes), you must use a roller conveyor for shifting the material to the band saw. Contact Bomar for more information about roller conveyors. Make sure the conveyor is long enough and the material cannot drop off the conveyor.
4.1. Saw band dismantling Lift the arm to its uppermost position and lock the arm in position with the regulation valve. Remove the safety covers of the band. The covers are tightened with screws. Open the back cover of the arm. It is mounted with two plastic head screws.
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Loosen the holder of the brush and turn it away from the band so it does not hinder the dismantling of the band. Manual version: 1.01/ Febr. 2017 Manual rev.:...
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By turning the tightening star to the left loosen the stretching of the band. Pull the saw band from the wheels.
After that pull out the band carefully from the guiding cubes. 4.2. Saw band installation Prior to installation, clean the track wheels, guiding cubes and inner side of the arm thoroughly of all traces of chips and dirt. Keep in mind the teeth direction when installing the saw band.
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Put the saw band on both guiding wheels. Make sure that the saw band ridge fits tightly to the wheel rim. Push the saw band as close to the rim as possible.. Turn the tightening star to the right until you gently stretch the band. Now you can remove the plastic cover on the saw band.
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Adjust the brush to the saw band and tighten the holder screws. Close the back cover and secure it with two plastic head screws. Manual version: 1.01/ Febr. 2017 Manual rev.:...
Mount the safety covers of the band. Arrow on the cover must agree with the direction of the teeth. If it does not, you have to flip the saw band. 4.3. Saw band stretching and inspection Correct saw band stretching is one of the most important factors, which influences accuracy and saw band lifespan.
4.3.1. Saw band stretching After installation of the saw band stretch it gently, so it does not fall of the wheels. Mount the Tenzomat on the saw band and secure it with screws. 10. Stretch the saw band until it is stretched to the recommended value. For a quick control of the tension of the band there is an indicator near the tightening star.
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If the distance between backside of the saw band and the wheel rim is 1 mm, the setting is right.
If the distance is bigger than 1 mm, or the saw band runs on the rim of the wheel, adjust the saw band. 14. Close cover of the saw band. 4.4. Adjustment 4.4.1. Saw band run adjustment The saw band run is set with screw in the stretching cube on the saw frame. Optimal distance has been determined at 1mm Turn the screw to the right, the saw band closes to the stretching wheel ...
Tighten the screw on the side of guide cube so that the band is loosened Loosen the screw slowly and let the hard metal plate touch the band. You must be able to turn the screw by hand. Set the hard metal guiding on the right cube in the same way.
4.4.4. Brush adjustment The brush has essential influence on cutting performance, saw band lifetime, lifetime of the wheels and hard metal guides and cutting accuracy. Therefore the brush has to be checked every shift. Release the tightening screw of the brush so that it is possible to move the brush.
4.4.5. Adjusting the limit switch of the saw band stretching After the saw band is replaced, the limit switch setting must be checked. If the limit switch is not set correctly, the band is stretched either too much or too little. Stretch the band with help of the TENZOMAT to an optimal value (Tenzomat chart) Release the nut on the stop screw...
4.4.6. Saw frame lower position stop adjustment The lower stop limits the lowest position of the saw frame. This stop has to be checked at least once a month. If the lower stop is adjusted incorrectly, the loading surface of the table can be cut too deeply or the material will not be cut completely Raise the saw frame to the upper position Release the nut of the adjusting screw and adjust the stop Fasten the adjusting screw with the nut again...
4.4.7. Adjustment of the limit switch of saw frame lower stop If you have adjusted the lower stop of the saw frame, the limit switch adjustment inspection is required Setting check Lower the arm to the lowest position. If the arm lays on the lower stop and the switch reacts, the setting is correct.
4.4.8. Adjustment of a throttle valve Switch off the machine by its main switch. Let the sawing head down at the bottom. Close the throttle valve gently. The worm screw (pos. A) must be next to the stop (pos. B), when the valve is closed.
4.5. Cooling agents and chip disposal The quality of the cooling If the solution is too weak: If the solution is too strong: agent will deteriorate due to: use of contaminated water corrosion protection is the cooling ability is ...
4.5.2. Cooling liquid preparation Prepare a mixture of water and cooling liquid. Conform the notes of the manufacturer and keep the manufacturer’s-approved concentration All instructions are stated on the tank of the cooling liquid or in documentation of the cooling liquid. For cooling liquid usage and disposal heed the instructions of the manufacturer.
4.5.3. Mikroniser(box) – mist lubrication Photos are for illustrative purposes only. Microniser is a device used to create a lubricating oil mist in precise doses of oil and air mixture, which is then applied directly to the saw band. .Microniser setting: For proper function of the Microniser pressured air (in the range of 0.5 to 0.5 MPa (5-6 bar)) must supplied from the pneumatic system (dry, clean, free of particles) see - arrow 1...
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Arrow 2 - shows the output of the cooling medium (air + oil). Arrow 3 - shows the inlet for the power supply cable. Set the interval of cutting oil dispersion on the Microniser- arrow 4 (3-20 pulses / min.). Adjust this interval to the parameters of the saw band and cut material. Adjust the amount of oil with a regulator - arrow 5 Manual version: 1.01/ Febr.
Setting the air quantity using another regulator - arrow 6 Switching on / off of the Microniser is depends on the control system of the machine it is installed on. See chapter “Machine control”. Recommended cutting oils for Micronisation: Manufacturer Cutting oil Biona Biocut...
4.5.5. Tool cleaning machines from chips after cutting. - optional accessory With custom pump (min. capacity 16 l / min.) The coolant gets into the rinsing pistol with the trigger lever. Sufficient pressure to the chips and debris were eliminated from the bearing surfaces of the base material and the saw.
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Also included is a convenient holder for postponement gun after useí Connecting part equipped with a transparent tube with a connecting part for coupling the cleaning pistol to the pump. Transparent inlet hose to couple the pistol to the connecting part. Suitable for machine brand Bomar...
In gearboxes, oil is used for the whole lifetime of the gearbox. We recommend replacing of the filling oil in case of repair. Attention: When replacing the oil, use oils recommended by BOMAR or oils from other manufacturers, which have comparable parameters.
4.6.2. Lubrication greases For lubrication we recommend using lithium based class NGLI-2 saponified grease. Different greases are mixable, if their oil bases and density classes are identical. Comparative table of the lubricant greases: Manufacturer Type of the lubricant grease Energrease LS - EP Paragon EP1 FETT EGL 3144 Esso...
Filling plug is located on top of the tank, drain hole is located at the bottom of the tank. Note: When replacing the oil, use oils recommended by BOMAR or oils, from other manufacturers which have comparable parameters. Do not forget, that mineral and synthetic oils...
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Manufacturer Type Manufacturer Type HD 5040 Valvoline Ultramax AW 32 Fina Hydran 32...
4.6.5. Hydraulic unit service After 50 hours working time, or the latest 3 month after the first run, the first service should be carried out. This includes: checking off all screws and connections, fixing points, tubes and hoses for leakage Check hydraulic oil level ...
External Leakages • Contamination • Damages • • Noise-(level) • Gauges • 4.7. Machine cleaning Clean the machine off cooling agent and impurities after every shift. Conserve the guiding surfaces, mainly. Guiding of the clamping jaws of the main and feeder vice. ...
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Secure the adjusting screw by means of the nut after reaching of the sinking speed Switch on the engine of the drive and check speed of the saw frame sinking again Manual version: 1.01/ Febr. 2017 Manual rev.:...
4.9. Worn pieces replacement 4.9.1. Hard metal guides replacement If the hard metal guides cannot be adjusted, they have to be replaced. Remove the hosepipe leading to the cooling agent and dismantle saw band and saw band guiding cube. Fasten the guiding cube to the vice and screw out the screws of both the hard metal desks.
4.9.2. Saw band guiding rollers replacement If the saw band is not sufficiently guided by guiding rollers and/or if the rollers are obviously worn, the rollers should be replaced. Attention! Guiding rollers must be replaced together on both guide cubes! 10.
13. Put new guide rollers on the eccentrics and screw the eccentrics to the guide cube. Optimal distance between band and roller is 0,05mm. Now insert a test piece of saw band (cca 15 - 20 cm) into the guide cube. Adjust both eccentrics so that the band runs in the middle of milled groove.
4.9.4. Stretching wheel replacement 18. Dismantle the saw band. 19. Screw off the stretching wheel screw and remove the washer. 20. Screw the auxiliary screw onto the shaft of the stretching wheel. 21. Put on the three-leg puller on the stretching wheel and pull off it from the shaft.
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24. Insert a bearing into the hole in the wheel and push it to the retaining ring. 25. Clean the shaft and oil it. Install the new stretching wheel on the shaft. 26. Install the distance ring on the shaft and push it to the lower bearing. 27.
4.9.5. Driving wheel replacement 30. Dismantle the saw band. 31. Screw of the fastening screw of the driving wheel and pull off the washer. 32. Screw on the auxiliary screw to the driving shaft. 33. Install the three-leg puller on the driving wheel and pull off it from the shaft. 34.
36. Install the washer and screw on the driving wheel. 37. Install the saw band. 4.9.6. Cooling pump replacement Warning! Only a qualified technician can perform the installation! Electrical accidents can be fatal! Disconnect the machine from electrical network. Pull out the tank from the pedestal as far as possible. Pull out the cooling pump from the tank and disconnect the hose for the coolant distribution from the pump.
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Disconnect the supply cable of the pump from the connector. Complete the replacement by following these steps in reversed order.
5.1. Mechanical problems Problem Possible causes Repair Set according to the chapter Wrongly adjusted hard metal guides „Machine maintenance“ Replace according to the Worn hard metal guides chapter „Worn pieces replacement“ Wrongly adjusted cubes of the saw Set according to the chapter band guiding „Machine maintenance“...
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Problem Possible causes Repair „Machine maintenance“ Stretch the saw band and set the Insufficient saw band stretching limit switch according to chapter „Machine maintenance“ Guiding cube holder and guiding cube Fasten the guiding holder and are loosened the cube Cleanse the material and mating Dirt between material and clamping jaw Increase the tightening of the saw band and set the sensor of...
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Problem Possible causes Repair saw band to chapter „Machine maintenance“ Adjust the descending speed Wrongly adjusted speed of descent of and speed of the saw band the arm and saw band speed according to values published by the saw band manufacturer Adjust the speed of descent and speed of the saw band Different material quality...
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Problem Possible causes Repair Set the pressure switch Pressure switch is wrongly adjusted according to chapter „Machine Saw band drive maintenance“ cannot be started Replace defective parts of the Pressure switch is defective pressure switch Hard metal pieces and bearings Wrongly adjusted band guiding (hard must be adjusted according to metal and bearings)
Problem Possible causes Repair considerably Worn channel for spring 5.2. Electric problems Problem Possible causes Repair No voltage in the socket Line voltage must be checked Each FA overload relay’s Overload relay is defective (thermal condition (on/off) must be Machine is not protection) checked possible to start...
Problem Possible causes Repair main vice can’t be moved Lack of cooling agent Refill the tank with cooling agent Thermal relay is defective Replace the thermal relay Check the cooling circuit and Input hosepipe is broken or clogged eventually cleanse the cooling system Cooling is not active Check the protection of the...
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Problem Possible causes Repair Wrong settings Check the Failure on the safety valve settings and adjust the safety valve Low pressure, pump supplies oil Wear of the hydro generator Call service External or internal leakages Call service Perform oil filtration or call the Damage by solid particles in oil service Not keeping the prescribed viscosity of...
Výkresy sestav pro objednání náhradních dílů / Zeichnungen für Bestellung der Ersatzteile / Drawing assemblies for spare parts order Při objednávání náhradních dílů vždy uvádějte: typ stroje (např. practix Ergonomic 340.278 DGH) , výrobní číslo (např. 125) a rok výroby (např. 1999). In die Bestellung der Ersatzteile führen Sie immer an: Maschinentyp (z.
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For spare parts order, you must always to allege: type of machine (for example Ergonomic 340.278 DGH), serial number (for example 125, see cover page) and year of construction (for example 1999). Manual version: 1.01/ Febr. 2017 Manual rev.:...
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