Six-Axis CNC Gear Hobbing Machine with SIEMENS&FANUC System
This gear hobbing machine is suitable for cutting such gears and gear shafts at smaller diameter but with large modules and double-open bush-embracing structure is adopted for the rear column of this machine, which helps a lot to cut large gear shafts.
This machine is suitable for cutting such workpieces, on continuous dividing tooth methods, as cylindrical straight gears, helical gears, worm gears & sprocket wheels, synchronous pulley, spline shafts in batch and/or single production.
Besides, Herringbone gears without clearance groove can also be machined on this machine by using finger-milling cutter.
Indexing device for single tooth is designed and set on this machine to achieve milling gears circularly and automatically by using disc-type milling cutters or finger-type milling cutters.
This machine is widely used for generating gears that are used in industries of mines, steels, wind powers, ships and so on.
Performance and Feature
1. The machine is of 6 axes with four axes coordinated control. CNC axes:
A-axis--hob head swivel;
B-axis--spindle ratation;
C-axis--worktable rotation;
X-axis--radial feed motion;
Y-axis--tangential feed motion(hob shifting);
Z-axis--axial feed motion;
Four coordinated control axes: B,C,X and Z.
2. Carry out index and differential compensation motions by the electronic gearbox(EGB).
3. Fulfill heavy duty and powerful cutting by multi-start & high speed hob.
4. Productivity of the machine is 2 to 5 times higher than those general ones that of the same specifications.
5. Fault diagnostics function.
6. Auto. overload monitoring and alarm devices for spindle.
7. Quick retraction protection: in case of power off or failure occurred, synchronously and quickly ratract hob to avoid collision.
8. Parameter programming.
9. Symmetric construction of the machine bed ensure stable thermal balance.
10. Adopt large power AC spindle motor, power is transferred to cutter spindle by high precision helical gearing. Adopt a one-tooth difference clearance eliminating mechanism to improve transmission accuracy and rigidity. Equipped with auto hob arbor clamping device.
1. With vertical design, the worktable can move in radial as radial feed movement.
2. Electrical system with fail-safe control and low failure rate is controlled by PLC of OMRON.
3. The modular valves available from Northman has high reliability and low failure rate in order to be convenient to diagnose failures and maintain hydraulic system.
4. The worktable is fitted with double-start worm as its index gearing. It is suitable for cutting the workpiece with less-teeth.
5. The hob spindle adopts circulating lubrication to ensure sufficient and reliable lubrication for spindle bearings in order to prolong their service life. Meanwhile circulating oil can quickly remove heat caused by spindle running to insure high rotary accuracy for the spindle.
6. Supply with special attachments according to the customers' special order.
7. Tangential hob head, hydraulic fixtures, workpiece arbors, live center, shift hob head.
| Max. workpiece dia. |
mm |
400 |
500 |
| Max. workpiece module |
mm |
12 |
12 |
| Max. axial travel |
mm |
400 |
400 |
| No. of teeth |
|
6-600 |
6-600 |
| Max. hob dimension(dia.*length) |
mm |
Φ170*230 |
Φ170*230 |
| Hob spindle taper bore |
|
ISO50 |
ISO50 |
| Worktable dia. |
mm |
Φ500 |
Φ500 |
| Max. hob head swivel angle |
deg |
±45 |
±45 |
| Center distance between hob and worktable |
mm |
45-315 |
45-345 |
| Distance between hob axis and worktable surface |
mm |
200-600 |
200-600 |
| Distance between center end face and worktable surface |
mm |
360-860 |
360-860 |
| Max. tangential travel(Y-axis) |
mm |
200 |
200 |
| Max. spindle speed(B-axis) |
rpm |
700 |
700 |
| Max. worktable speed(C-axis) |
rpm |
35 |
35 |
| Radial rapid travel(X-axis) |
mm/min |
3000 |
3000 |
| Tangential rapid travel(Y-axis) |
mm/min |
1500 |
1500 |
| Axial rapid travel(Z-axis) |
mm/min |
3000 |
3000 |
| Linear coordinate resolution of CNC axis |
deg. |
0.001 |
0.001 |
| Rotary coordinate resolution of CNC axis |
deg. |
0.001 |
0.001 |
| Main motor power |
kw |
18 |
18 |
| Total power |
Kva |
55/50HZ |
55/50HZ |
| Main machine weight |
kg |
17500 |
17500 |
Standard Attachments
Φ40 hob arbor assembly
Auto hob clamping device
Workpiece fixture
Hydraulic system
Cooling system
Lubrication system
Metered lubrication system
Oil chiller for coolant
Oil chiller for hydraulic and lubrication oil
FANUC 18i CNC system
10.4" color display
RS232 interface
Machine data storage disc
Electrical cabinet with air conditioner
Indicating cabinet with air conditioner
Indicating lamp for machine status
Dual-hand control function
Safety switch
Fully-enclosed safe guard
Oil mist collector
Chip conveyor
Chip cart
Manual chip flushing oil gun
Isolating vibration pads
Special tools for installation and adjustment
Audited Supplier 
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