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CNC Cylindrical Gear Hobbing Machine
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GH400 CNC6 High Speed CNC Gear Hobbing Machine
GH400 CNC6 is of 6 axes with 4 axes coordinated, CNC axes: A-axis: hob head swivel; B-axis: hob spindle rotation; C-axis: worktable rotary motion; X-axis: radial feed motion; Y-axis: tangential feed motion (or hob shifting motion);
- GH400 CNC6 High Speed CNC Gear Hobbing MachineDownload
Technical parameters of GH400 CNC6 High Speed CNC Gear Hobbing Machine
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Workpiece fixture;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. SIEMENS 840D;
2. Hob arbor assembly: Φ27, 32, 50, 60mm;
3. Deburring device;
4. Workpiece fixture;
Features
| Model | Unit | GH400 CNC6 |
|---|---|---|
| CNC system | FANUC 31i; 6-axis | |
| Max workpiece diameter | mm | Φ400 (16”) |
| Max module | mm | 12 |
| Max axial travel | mm | 400 (16”) |
| Min No. of teeth | 6-600 | |
| Max hob diameter and length | mm | Φ170x230 (6.7x9.1”) |
| Spindle taper bore | ISO 50 | |
| Worktable diameter | mm | Φ400 (16”) |
| Max hob head swivel angle | degree | ±45 |
| Central distance between hob and worktable | mm | 45-315 (1.8-12”) |
| Distance between hob axis and worktable surface | mm | 200-600 (7.9-24”) |
| Distance between center end face and worktable surface | mm | 360-860 (14-34”) |
| Max hob tangential travel | mm | 200 (7.9”) |
| Max spindle speed (B-axis) | r/min | 700 |
| Max worktable speed (C-axis) | r/min | 35 |
| Rapid radial travel (X-axis) | mm/min | 3000 |
| Rapid tangential travel (Y-axis) | mm/min | 1500 |
| Rapid axial travel (Z-axis) | mm/min | 3000 |
| Linear coordinate resolution of CNC axes | mm | 0.001 |
| Rotary coordinate resolution of CNC axes | degree | 0.001 |
| Total power / main motor power | kVA/kW | 55/18 |
| Packing size (L x W x H) | mm | 3710×2150×3200 2760×2200×1600 2220×950×2620 2060×1450×2320 |
| Net weight | kg | 17500 |
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Workpiece fixture;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. SIEMENS 840D;
2. Hob arbor assembly: Φ27, 32, 50, 60mm;
3. Deburring device;
4. Workpiece fixture;
Features
1. GH400 CNC6 is of 6 axes with 4 axes coordinated, CNC axes: A-axis: hob head swivel; B-axis: hob spindle rotation; C-axis: worktable rotary motion; X-axis: radial feed motion; Y-axis: tangential feed motion (or hob shifting motion); Z-axis: axial feed motion.
2. Carry out index and differential compensation motions by electrical gear box. High speed heavy-duty hobbing with multi-start high speed hob can be carried out.
3. Quick-retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob to avoid collision;
4. Compact construction design to save floor space; reasonable arrangement so as to operate easily.
5. Double-wall, rib-reinforced and symmetric construction design for bed and column ensures stable thermal distribution of the machine.
6. Large power AC spindle motor is used for the spindle; high precision helical gearing is adopted for transmission. One-tooth difference clearance-eliminating mechanism is arranged at the end of transmission chain.
7. Special spindle bearings are used for supporting the hob spindle; steel inserted guideway and ample rectangle guideway are used for slide; which ensures the machine has high rigidity and accuracy.
8. The quick-change hob and automatic hob holder clamping devices are equipped, also spindle overload auto monitoring and alarm device.
9. Super precision bearing are used for supporting worktable spindle; super precision double worm gearing system are used for worktable to carry out clearance-free transmission; a clamping cylinder is arranged at the bottom.
Features
1. GH400 CNC6 is of 6 axes with 4 axes coordinated, CNC axes: A-axis: hob head swivel; B-axis: hob spindle rotation; C-axis: worktable rotary motion; X-axis: radial feed motion; Y-axis: tangential feed motion (or hob shifting motion); Z-axis: axial feed motion.
2. Carry out index and differential compensation motions by electrical gear box. High speed heavy-duty hobbing with multi-start high speed hob can be carried out.
3. Quick-retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob to avoid collision;
4. Compact construction design to save floor space; reasonable arrangement so as to operate easily.
5. Double-wall, rib-reinforced and symmetric construction design for bed and column ensures stable thermal distribution of the machine.
6. Large power AC spindle motor is used for the spindle; high precision helical gearing is adopted for transmission. One-tooth difference clearance-eliminating mechanism is arranged at the end of transmission chain.
7. Special spindle bearings are used for supporting the hob spindle; steel inserted guideway and ample rectangle guideway are used for slide; which ensures the machine has high rigidity and accuracy.
8. The quick-change hob and automatic hob holder clamping devices are equipped, also spindle overload auto monitoring and alarm device.
9. Super precision bearing are used for supporting worktable spindle; super precision double worm gearing system are used for worktable to carry out clearance-free transmission; a clamping cylinder is arranged at the bottom.
Technical parameters of GH400 CNC6 High Speed CNC Gear Hobbing Machine
| Model | Unit | GH400 CNC6 |
|---|---|---|
| CNC system | FANUC 31i; 6-axis | |
| Max workpiece diameter | mm | Φ400 (16”) |
| Max module | mm | 12 |
| Max axial travel | mm | 400 (16”) |
| Min No. of teeth | 6-600 | |
| Max hob diameter and length | mm | Φ170x230 (6.7x9.1”) |
| Spindle taper bore | ISO 50 | |
| Worktable diameter | mm | Φ400 (16”) |
| Max hob head swivel angle | degree | ±45 |
| Central distance between hob and worktable | mm | 45-315 (1.8-12”) |
| Distance between hob axis and worktable surface | mm | 200-600 (7.9-24”) |
| Distance between center end face and worktable surface | mm | 360-860 (14-34”) |
| Max hob tangential travel | mm | 200 (7.9”) |
| Max spindle speed (B-axis) | r/min | 700 |
| Max worktable speed (C-axis) | r/min | 35 |
| Rapid radial travel (X-axis) | mm/min | 3000 |
| Rapid tangential travel (Y-axis) | mm/min | 1500 |
| Rapid axial travel (Z-axis) | mm/min | 3000 |
| Linear coordinate resolution of CNC axes | mm | 0.001 |
| Rotary coordinate resolution of CNC axes | degree | 0.001 |
| Total power / main motor power | kVA/kW | 55/18 |
| Packing size (L x W x H) | mm | 3710×2150×3200 2760×2200×1600 2220×950×2620 2060×1450×2320 |
| Net weight | kg | 17500 |
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Workpiece fixture;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. SIEMENS 840D;
2. Hob arbor assembly: Φ27, 32, 50, 60mm;
3. Deburring device;
4. Workpiece fixture;
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Workpiece fixture;
6. Isolating vibration pad;
7. Tools for installation and set up;
Optional accessories
1. SIEMENS 840D;
2. Hob arbor assembly: Φ27, 32, 50, 60mm;
3. Deburring device;
4. Workpiece fixture;
Products
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A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.
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The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.
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- Base & Column: Primary support structure
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- Milling Head: Houses spindle, motor, and quill (Z-axis)
- Arbor/Spindle: Rotating shaft holding cutting tools
- Controls: Manual handwheels or CNC interface
Evolution & Industry Significance
Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.
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