Heavy Duty Precision & Powerful Lathe


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HEAVY DUTY PRECISION & POWERFUL LATHE
OPERATION MANUAL & PARTS LIST
MODEL: 3480M, 34120M, 34160M, 34200M, 34240M

INDEX
1. SPECIFICATIONS & FEATURES ‥‥‥‥‥‥‥‥‥‥‥‥ P.2-3 2. GENERAL LAYOUT ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.4 3. MACHINE OPERATION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.5 4. MAINTENANCE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.6 5. UNPACKING AND UNLOADING ‥‥‥‥‥‥‥‥‥‥‥‥‥ P.7 6. SPINDLE SPEED CONTROL ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.8 7. GEARBOX OPERATION ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.9-12
- THREADS AND FEEDS 7-1 LAYOUT OF GEARBOX 7-2 THREAD CUTTING INDEX 7-3 FUNCTION OF GEAR BOX 7-4 THREAD INDICATOR 8. SADDLE AND APRON CONTROL ‥‥‥‥‥‥‥‥‥‥‥‥‥ P.13-15 8-1 LAYOUT OF APRON 8-2 OPERATIONAL METHOD 9. TAILSTOCK ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.16-17 9-1 LAYOUT OF TAILSTOCK 9-2 OPERATIONAL METHOD 10. BRAKE DEVICE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.17 11. ELECTRICAL CIRCUIT DIAGRAM ‥‥‥‥‥‥‥‥‥‥‥‥‥ P.18-20 12. IDENTIFICATION SYMBOLS ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.21 13. STRUCURE ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.22-26 13-1 HEADSTOCK DRIVING STRUCURE 13-2 HEADSTOCK SPEED CHANGE STRUCURE 13-3 SADDLE AND CROSS – SLIDE STRUCURE 13-4 TAILSTOCK STRUCURE 13-5 MOTOR AND END GEAR CHAIN STRUCURE 14. PART LIST ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ P.27-50 14-1 HEADSTOCK EX01 14-2 HEADSTOCK EX02 14-3 HEADSTOCK EX03 14-4 SADDLE AND CROSS – SLIDE EX04 14-5 TAILSTOCK EX05 14-6 MOTOR EX06 14-7 BED EX07 14-8 END GEARS ASSEMBLY EX08 14-9 GEAR BOX EX09 14-10 APRON EX10 14-11 APRON EX11 (WITH RAPED FEED)
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1-1. SPECIFICATIONS

ITEM MODEL
CAPACITY
BED

X
SWING OVER BED SWING OVER CROSS SLIDE SWING OVER GAP DISTANCE BETWEEN CENTERS

WIDTH OF BED WIDTH OF GAP LENGTH OF BED

HEADSTOCK

SPINDLE BORE DIAMETER SPINDLE NOSE NUMBER OF SPINDLE SPEEDS RANGE OF SPINDLE SPEEDS

CARRIAGE TAILSTOCK THREADS
FEEDS MOTOR

WIDTH OF CARRIAGE CROSS SLIDE TRAVEL COMPOUND REST TRAVEL MAX. SIZE CUTTING SIZE DIAMETER OF BARREL TRAVEL OF BARREL TAPER OF BARREL LEAD SCREW DIAMETER & PITCH RANGE OF METRIC PITCHES RANGE OF INCH PITCHES RANGE OF DIAMETRICAL PITCHES RANGE OF MODULE PITCHES FEED ROD DIAMETER RANGE OF LONGITUDINAL FEEDS RANGE OF CROSS FEEDS MAIN SPINDLE MOTOR COOLANT PUMP MOTOR RAPID MOTOR

Unit: mm(inch)
34/38 /44 40 / 80 /120 /160 /200/240 860 (33.86") / 960(37.8")/ 1120(44.09”) 540(21.26") / 640(25.20")/ 800(31.50") 1200(47.24")/1300(51.18")/ 1460(57.48") 1000(39.37")/ 2000(78.74")/ 3000(118.11")/ 4000(157.48")/ 5000(196.85")/6000 (236.22")
510 (20.08”) 240 (9.45”) 3340(131.5") / 4340(170.87") / 5340(210.24") / 6340(249.61") / 7340(288.98") / 8340(328.35") 105 (4”) / OP: 152 (5.98”), 230 (9.06”), 255 (10”) 4” : A2-8 / OP: A2-11, A2-15
12 steps 4” : 23-1300 rpm / OP: 6”~ 16- 810 rpm,
9”&10”~8-291 rpm 655 (25.79”) 510 (20.08”) 370 (14.57”)
32 (1.26”) x 32 (1.26”) 125 (4.92”) 200 (7.87”) MT6
Dia.45 mm. Pitch 12 mm. / Dia.1.77"X2 T.P.I.
0.8-14 mm (65 Nos) 2-28 TPI (36 Nos) 4-56 DP (36 Nos)
0.5-7 MP (22 Nos) Dia. 32 (1.26”)
0.05-0.7 mm/rev (0.002"-0.0276" in/rev)
0.025-0.35 mm/rev (0.001"-0.0138" in/rev) 15 HP /OP: 20 HP 1/8 HP 1/4 HP
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1-2. FEATURES
MAIN FEATURES: Structurally this machine is suitable for heavy cutting, easy operation, high tenacity, stability and heavy work load, which are good for heavy turning of mold, gear, shaft, central spindle etc.
1. BASE: Designed for heavy duty machining, high body structure to carry heavy workload and improve operational stability. 2. FEED GEAR BOX: -1. Full range metric/inch gear box, no-need for gear exchange and is easy for operation. -2. Two thread per inch (1” X 2 T.P.I ) available, which offers much larger machining range
than same class of lathes and pretty convenient to use. 3. APRON:
Enforced oil supply with safety device is used to avoid collision during turning operation. 4. SPINDLE:
12-step speed change, the spindle is supported by three points with NSK bearings. Gears and spindle are made of high quality alloy carbon treated, spindle bore diameter 105 mm, optional 152 mm, precision ground to acquire much superior hardness and tenacity.
5. CARRIAGE & SADDLE: This part has been ultra-frequency treated with much longer service life.
6. CROSS WAY FEEDING GUIDE SCREW: Two point support and suitable for heavy duty turning.
7. COMPOUND REST: Four point tightening with enhanced mechanical stability. Wider front top slide is treated with high frequency precision ground and has extended service life.
8. TAILSTOCK: Two stage fixed tailstock for heavy turning and drilling stability. Two stage feeding device for easy operation.
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2. GENERAL LAYOUT
1. END GEAR ASSEMBLY 2. HEADSTOCK 3. GEAR BOX 4. CHUCK 5. FEED ROD 6. GAP BED 7. LEADSCREW 8. APRON 9. TOP-SLIDE 10. SADDLE AND CROSS –SLIDE 11. BREAK PEDAL 12. START SWITCH ROD 13. BED 14. TAILSTOCK 15. CHANGE SPEED GEAR BOX
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3. MACHINE OPERATION 1. POWER SOURCE WIRING:
1. Power connector at lower left part of the lathe. 2. Power source switches with fuse must be set up in the lathe and electric
circuit ,the wire of the lathe must be ground connected ,too. 3. After wire connection, then input the power source by power source button to
change the spindle in low speed, check the spindle rotating direction by operating the tart-lever in the right side of APRON. See the result whether it is normal or not, in this case, the spindle rotates to the direction of operator, then the rotation is normal. As the spindle rotates to the opposite direction , you should replace any two of the three electric wires.
2. IDENTIFICATION AND PREPARATION BEFORE OPERATION:
1. Supply oil to all the necessary positions. 2. Check all the levers and handles, whether or not in normal condition. 3. Check the V-belt of headstock motor, whether or not in adequate tension state. 4. Make clear the relative positions before operate the transmission mechanism,
such as head stock, feed gear box, cross slide, etc, and automatic feeding, tread cutting.
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4. MAINTENANCE
IDENTIFICATION ON OPERATION 1. Keep the machine in accurate state and long life under normal conditions of usage. 2. It’s important to check the oil level through oil windows all oil reservoirs and top up as necessary before starting the machine. Especially pay attention to hand oiling daily between saddle and bed ways. 3. Renew the lubrication oil in headstock after first 3 months usage, in order to reduce the noise be produced. 4. Stop the machine immediately if the following are happened, overheat in headstock, vibration, oil leakage or no oil, and then repair it as soon as possible. 5. Don’t use hammer or other tool to knock the workpiece, in order to keep the accuracy of spindle. 6. Be careful not let the tool to hurt the slide ways. 7. Don’t to adjust or operate this machine arbitrary unless well-known to it. 8. It is great profit to the life and accuracy of this machine to maintain it periodically. 9. Clean the machine, remove the chips from machine and surroundings, apply oil on the sliding surfaces and turn off the power source after per work day.
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5. UNPACKING AND UNLOADING
1. Each machine is dispatched fully assembled except for attachment such as taper attachment etc.
2. Unloading the machine, packed in the wooden case, should be made by wiring cable from the sleepers.
3. Lifting unpacked machine is made easily by the method shown in the following figure and according to the center of gravity of this lathe.
4. Raising and lowering the lathe should be done carefully, especially when you lower the lathe, be careful not to bump it against the floor and give attention to the other men to attain the safety.
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6. SPINDLE SPEED CONTROL
1. The 12-step spindle speeds are obtained by selecting the proper lever position shown on the speed name plate.
2. Do not move speed-selector controls while the spindle is rotating. 3. Layout of headstock:
1. END GEARS OUPUT 2. FOR/REV LEVER 3. A / B LEVER 4. 3-STEP LEVER 5. HIGH/LOW LEVER 6. SPINDLE SPEED CHANGE PLATE 7. SPINDLE CHUCK
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7. GEARBOX OPERATION -THREADS AND FEEDS
7-1 GEARBOX OPERATION All the threads and feeds directly available from the gearbox are shown on the data plate fitted on the front of gearbox and the setting of control levers are shown in fig. Layout of gearbox:
AB-STEP CHANGE LEVER 1. COOLANT PUMP SWITCH LAMP 2. COOLANT PUMP SWITCH 3. ELECTRIC SUPPLY LAMP 4. ELECTRIC CONTROL SWITCH 5. EMERGENCY STOP 6. MICRO SWITCH 7. BORE OF LUBRICATING DEVICE 8. GEAR CHANGE 9. OIL WINDOW 10. 9-STEP CHANGE LEVER 9

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Heavy Duty Precision & Powerful Lathe