Mega H-550A Instruction Manual Download Page 15

 
 

4.4 AUTOMATIC OPERATION :   

Having finished all the procedures described above in (2) Operating Preparation ,and with the   
workpiece to be cut placed in the vise of the machine , but NOT under the saw blade. 
(1) Turn the AUTO-MANUAL selector to manual.

 In control panel – The front vise clamp the 

workpiece when turn switch NO.(8) right and press button NO.(

6

) 1.5sec in the same 

time. Then the front vise hold the workpiece after the lamp NO.(

6A

) light.

 

(2) Turn the AUTO-MANUAL selector to auto. 
(3) Depress the QUICK APPROACH switch to make the saw frame descend quickly to touch the lower   
limit position , it will then rise automatically to the freight preset. 
(4) Preset the number of cuts required. 

 (5) 

Confirm to clamp the workpiece in procedure (1) and (2).

 

  (6) Depress the BLADE DRIVE button to start both the saw blade motor and the cutting fluid pump.   

The saw frame begins to descend to cut workpiece. 

  (7) After the required number of cut has been completed, the saw frame will lift to the raised position   

and all machine operation will stop. 

  (8) The machine will automatically stop, when the workpiece is so short that it can no longer be   

automatically feed. 

 

 

4.5 SPECIAL OPERATION :   

(1) While you are cutting a workpiece, if the saw blade suddenly jams in the workpiece, depress the   

  FRAME RAISE button to lift the saw frame immediately. 

(2) The saw blade jamming in the workpiece is most likely because of : 
     

a.

 Slippage occurring between saw blade and drive wheel. Tension placed on the saw blade is not   

 sufficient. 

     

b.

 Slippage occurring between drive belt and motor pulley. Tension on drive belt is not sufficient or   

  belt is worn. 

c.

 Broken teeth on saw blade. 

d.

 Too blunt saw blade. 

e.

 Too fine tooth spacing on saw blade for material being cut. 

f.

 Too fast feed rate for material being cut and blade used. 

 

4.6 BREAK-IN OPERATION: 

When a new blade is used , be sure to first break in the blade before using it for extended operation.   
Failure to break in the blade will shorten the service lift of the blade ,and result in 

  less than 

optimum 

efficiency. To break in the blade ,proceed as follow : 
(1) Reduce the blade speed setting to one half of its normal setting . 
(2) Lengthen the time required for cutting to 2-3 times that of normal. 
(3) The break-in operation can be considered sufficient if all unusual noises or metallic sounds have   

been eliminated. (For instance, to completely break in the blade, a minimum of five complete cuts   
of a 200mm (8 ins) diameter work- piece will be required.) 

(4) After the break-in operation has been completed, return the blade speed and feed rate to their   

normal setting. 

 
 
 
 
 

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Summary of Contents for H-550A

Page 1: ...AUTOMATIC BANDSAW H 550A INSTRUCTION MANUAL MEGA MACHINE CO LTD DOC NO H550A 100 U CTRL NO 06 UPDATE 1998 07 27 DOC VER A...

Page 2: ...lation operation lubrication maintenance and trouble shooting As MEGA MACHINE COMPANY LIMITED is constantly improving the design of its machines there may be some instance where this book differs some...

Page 3: ...ection 3 4 4 Operation 4 1 Control Panel 4 1 4 2 Operating preparation 4 3 4 3 Manual Operation 4 4 4 4 Automatic operation 4 5 4 5 Special Operation 4 5 4 6 Break In Operation 4 5 5 Maintenance 5 1 H...

Page 4: ...1 INTRODUCTORY ILLUSTRATIONS 1 1 Principal Parts 1 1...

Page 5: ...n 82 105 138 180 230 260 kW Blade 5 6 Hydraulic1 5 Coolant0 1 Motor Output HP Blade 7 5 Hydraulic 2 Coolant 1 8 Hydraulic pressure bar 40 kg Net Gross 3800 4500 Weight lb Net Gross 8360 9900 Specifica...

Page 6: ...machine as shown in the fig 2 If forklift is used then fig 3 Sufficient space should be left around the machine to allow safe handling of materials and inspection and maintenance operation Should the...

Page 7: ...must be level and flat After the proper leveling position has been obtained anchor the machine with anchor bolts The position of anchor bolts and floor dimensions are shown in fig 4 Contact portion wi...

Page 8: ...s they leave no lint or strings The machine as received by you has been completely drained of all oil Before any attempt is made to run it Before any motor connections are made every detail of the fol...

Page 9: ...of index cycles when off cut pieces longer than 500mm are required Maximum 9 time stroke can be set Blade speed LED Display This blade speed tachometer indicates how fast the saw blade is running in...

Page 10: ...rkpiece and thereafter it will descend at the designated cutting speed 10 REAR VISE SWITCH This switch control the rear vise jaws in manual mode switched to the left makes the front vise open and swit...

Page 11: ...of index cycles when off cut pieces longer than 500mm are required Maximum 9 time stroke can be set Blade speed LED Display This blade speed tachometer indicates how fast the saw blade is running in...

Page 12: ...tched to the right makes the front vise clamp 11 MANUAL FEED FORWARD BUTTON When this button is pressed the workpiece moves forward The workpiece stops advancing when the button is released NOTE Turn...

Page 13: ...each guide d The back edge of the saw blade should make contact with the flange of the drive and driven wheel turn count clockwise the hydraulic blade tension handle to tighten the saw blade Then the...

Page 14: ...the off cut and carry out all the procedures as described above in 4 2 Operating Preparation 1 Depress the RAISE button to lift the saw frame until the cutting edge of the saw blade clears the workpie...

Page 15: ...ng a workpiece if the saw blade suddenly jams in the workpiece depress the FRAME RAISE button to lift the saw frame immediately 2 The saw blade jamming in the workpiece is most likely because of a Sli...

Page 16: ...swinging up and down in line p above procedures have been done in our factory before machine dispatched now for checking test please dry run the machine by raising the saw frame to the very top positi...

Page 17: ...ke sure tighten the set screw after zeroing zeroing knob b After zeroing knob a turn knob a at 5 position and let the machine running in the same condition as previous did dry running turn knob b whil...

Page 18: ...5 MAINTENANCE The maintenance of this machine is divided three portions as following 5 1 HYDRAULIC CIRCUIT 5 1...

Page 19: ...n Device DAPHNE FLUID 32T Few Twice a year 2 Drive Wheel Bearing Grease Few Thrice a year 3 Guide Slides Shell Tonna 33 Few Oil daily 4 Transmission Gear Box DAPHNE GEAR LUBE 320 Few Twice a year 5 Cu...

Page 20: ...the life of the band Too low a speed could cause overfeeding Always reduce the speed when cutting dry 7 Break in Procedure The normal feed rate should be reduced to about 1 2 for the first 50 square...

Page 21: ...is determined by a cubed factor so increasing the distance between the guides by a factor of 2 decreases the beam strength by a factor of 2 3 or 8 You lose a lot very quickly 16 Brushes A good set of...

Page 22: ...ct Excessively hard material surface Soften material surface Excessive cutting rate Reduce cutting rate Non annealed workpiece Replace with suitable workpiece Insufficient or lean cutting fluid Add fl...

Page 23: ...nect 2 Turn on 3 Push reset button a Load workpiece b Depress FRAME RAISE button c Depress QUICK APPROACH switch 2 The saw frame descends out of sequence 1 Solenoid valve blocked 2 Piping leakage 3 Pa...

Page 24: ...inate breakdown 2 Press Blade ascending button 1 2 06 Saw frame touches fast to lower limit switch abnormal 1 Eliminate breakdown 2 Press Blade ascending button 1 2 07 Sensor switch abnormal 1 Elimina...

Page 25: ...to leave unused overlong 5 minutes 30 Auto cutting piece counting over 1 Press Blade ascending button 2 Press the key CLEAR 1 2 CLEAR 31 Blade descending button jammed 1 Eliminate breakdown 2 Press Bl...

Page 26: ...000 31000 50000 27000 50000 26000 50000 26000 44000 25000 42000 19000 31000 16000 23000 15000 23000 10000 20000 10000 20000 10000 20000 NOTE 1 All conditions described above are based on the use of hi...

Page 27: ...210 190 215 200 230 200 225 230 250 190 210 190 230 220 240 170 190 180 200 200 220 210 230 180 210 180 210 160 190 190 220 190 220 180 215 150 180 200 230 210 240 175 200 180 220 210 250 220 260 240...

Page 28: ...1 special W 1 extra W 1 regular H 12 H 13 H 21 H 22 H 24 S 1 S 2 S 5 L 6 L 7 217 241 217 241 228 255 187 207 207 228 156 187 156 196 156 196 205 228 217 241 177 212 173 228 190 230 180 230 140 170 75...

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