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CNC Cylindrical Gear Hobbing Machine
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GH1250 CNC6 Large-scale CNC Gear Hobber
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH1250 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears.
- GH1250 CNC6 Large-scale CNC Gear Hobbing MachineDownload
Technical parameters of GH1250 CNC6 Large-scale CNC Gear Hobber
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Oil mist collector;
6. Vibration isolating pad;
7. Tools for installation and adjustment;
Optional accessories
1. FANUC 31i;
2. Hob arbor assemblies: Φ32, 50, 60mm;
3. Deburring cutter;
4. Auto loading & unloading system;
5. Hob adjusting device;
6. Workpiece fixture;
Applications
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH1250 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH1250 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
Features
| Model | Unit | GH1250 CNC6 |
|---|---|---|
| CNC system | SIEMENS 840D; 6-axis | |
| Max workpiece diameter | mm | Φ1250 (49”) |
| Max module | mm | 16 |
| Max axial travel | mm | 600 (24”) |
| No. of teeth | 6-600 | |
| Max hob diameter and length | mm | Φ220x260 (8.7x10”) |
| Spindle taper bore | ISO 50 | |
| Worktable surface diameter | mm | Φ930 (37”) |
| Max hob head swivel angle | degree | ±45 |
| Central distance between hob and worktable | mm | 100-780 (3.9-31”) |
| Distance between hob axis and worktable surface | mm | 450-1050 (18-41”) |
| Distance between center end face and worktable surface | mm | 750-1350 (3-53”) |
| Hob tangential travel | mm | 220 (8.7”) |
| Max spindle speed | r/min | 275 |
| Max worktable speed | r/min | 24 |
| Radial / tangential / axial rapid travel | mm/min | 1500 |
| Total power / main motor power | kVA/kW | 67/30 |
| Net weight | kg | 30000 |
Standard accessories
1. Hob arbor assembly: Φ40mm;
2. Hydraulic, lubrication and cooling system;
3. Chip conveyor;
4. Auto hob arbor clamping device;
5. Oil mist collector;
6. Vibration isolating pad;
7. Tools for installation and adjustment;
Optional accessories
1. FANUC 31i;
2. Hob arbor assemblies: Φ32, 50, 60mm;
3. Deburring cutter;
4. Auto loading & unloading system;
5. Hob adjusting device;
6. Workpiece fixture;
Applications
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH1250 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH1250 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
Features
- GH1250 CNC6 odvalovacie is of 6 CNC axes: A--hob head swivel; B--spindle rotation; C--worktable rotation; X--radial feed motion; Y--tangential feed motion (hob shifting); Z--axial feed motion. Four coordinated control axes: B, C, X and Z (or B, C, Y and Z).
- Auto overload monitoring and alarm devices for spindle.
- Quick retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob.
- Symmetric construction of the machine bed ensures stable thermal balance.
- 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.
- Large hydrostatic bearings and super precision double worm gearings system are used for worktable.
- Bulky parts are of high rigidity, column is of double-wall, rib-reinforced and symmetric construction,
- Guideways for axes X, Y and Z are of ample hardened steel guideway, linear recirculating roller guidance systems are preloaded, ensure the guideways have high rigidity and accuracy.
Features
- GH1250 CNC6 odvalovacie is of 6 CNC axes: A--hob head swivel; B--spindle rotation; C--worktable rotation; X--radial feed motion; Y--tangential feed motion (hob shifting); Z--axial feed motion. Four coordinated control axes: B, C, X and Z (or B, C, Y and Z).
- Auto overload monitoring and alarm devices for spindle.
- Quick retraction protection: in case of power off or failure occurred, synchronously and quickly retract hob.
- Symmetric construction of the machine bed ensures stable thermal balance.
- 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.
- Large hydrostatic bearings and super precision double worm gearings system are used for worktable.
- Bulky parts are of high rigidity, column is of double-wall, rib-reinforced and symmetric construction,
- Guideways for axes X, Y and Z are of ample hardened steel guideway, linear recirculating roller guidance systems are preloaded, ensure the guideways have high rigidity and accuracy.
Technical parameters of GH1250 CNC6 Large-scale CNC Gear Hobber
| Model | Unit | GH1250 CNC6 |
|---|---|---|
| CNC system | SIEMENS 840D; 6-axis | |
| Max workpiece diameter | mm | Φ1250 (49”) |
| Max module | mm | 16 |
| Max axial travel | mm | 600 (24”) |
| No. of teeth | 6-600 | |
| Max hob diameter and length | mm | Φ220x260 (8.7x10”) |
| Spindle taper bore | ISO 50 | |
| Worktable surface diameter | mm | Φ930 (37”) |
| Max hob head swivel angle | degree | ±45 |
| Central distance between hob and worktable | mm | 100-780 (3.9-31”) |
| Distance between hob axis and worktable surface | mm | 450-1050 (18-41”) |
| Distance between center end face and worktable surface | mm | 750-1350 (3-53”) |
| Hob tangential travel | mm | 220 (8.7”) |
| Max spindle speed | r/min | 275 |
| Max worktable speed | r/min | 24 |
| Radial / tangential / axial rapid travel | mm/min | 1500 |
| Total power / main motor power | kVA/kW | 67/30 |
| Net weight | kg | 30000 |
Applications
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH1250 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH1250 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
Based on the generating process, with carrying out index and differential compensation motions by electronic gearbox, GH1250 CNC6 Large-scale CNC Gear Hobbing Machine is designed to cut cylindrical spur and helical gears, crowning or slightly tapered gears, worm wheels and spline etc. GH1250 CNC6 odvalovacie are used in the industries, such as mine machinery, marine, crane, metallurgy, lift, petroleum machinery, electricity generation equipment, engineering machinery etc.
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What is a Knee Type Milling Machine?
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.
Working Principle
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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Distinctive Features & Advantages
- Vertical Adjustability: Knee movement enables quick workpiece height changes
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- Turret Design (Common): Swiveling milling head for multi-angle machining
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Primary Classifications
- Vertical Knee Mill: Spindle axis perpendicular to table (most common)
- Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
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- Turret Mill: Head rotates on turret for flexible positioning
Main Components
- 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.
Fortune Pacific: Your Knee Mill Solution
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