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CNC Cylindrical Gear Hobbing Machine
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Technical parameters of GH100 CNC6 CNC7 Gear Hobbing Machine
Features
1. Hob spindle is directly connected to servo motor; workpiece spindle is directly driven by servo motor through gapless device and supported by high precision double roller bearings.
2. Linear guideway for both axial and radial carriage, which ensures rigidity and speed.
3. Tailstock of GH100 CNC7 is driven by servo motor through ball screw; tailstock of GH100 CNC6 is manually adjusted, and tailstock center is pushed by hydraulic cylinder.
4. For lubrication of workpiece spindle, cutters, guideways and screws, GH100 CNC7 adopts oil-gas lubrication and GH100 CNC6 adopts grease lubrication.
5. With communication programming software, operator only needs to input the workpiece and hob data.
6. Environment-protection structure with full-closed cover.
7. The chip handling system is mounted in the middle of the rigid base which avoids the cutting oil and chip splash.
8. Workpiece spindle and hob spindle realize high speed gear cutting. The hob shank could be easily exchanged.
Optional accessories
1. FANUC 31i for GH100 CNC7;
2. Hob arbor assembly: Φ10, 16, 22mm;
3. Deburring device;
4. Hob setting device for second cutting;
5. Spring collet;
6. Collet holder;
7. Oil mist collector;
8. Automatic loading/unloading device;
| Model | GH100 | |
|---|---|---|
| Type | CNC7 | CNC6 |
| CNC system | FANUC 0i-MD | FANUC 0i-MD |
| Controlled axis | 7 axes of 4 axes in synchronization | 6 axes of 4 axes in synchronization |
| Tailstock movement | CNC controlled | Manual |
| Pneumatic system | Yes | No |
| Programming method | Conversational programming | Parametric programming |
| Max. workpiece diameter | 100mm (3.9'') | 100mm (3.9'') |
| Max. module | 3mm | 3mm |
| Number of teeth | 3-999 | 3-999 |
| Max carriage travel | 220mm (8.7’’) | 220mm (8.7’’) |
| Hob head swing angle | ±45° | ±45° |
| Max. diameter of hob | 80mm (3.1’’) | 80mm (3.1’’) |
| Max. hob shifting length | 100mm (3.9'') | 100mm (3.9'') |
| Hob arbor diameters | 13mm (optional: 10, 16, 22mm) | 13mm (optional: 10, 16, 22mm) |
| Rapid feed of X/Z axis | 10m/min | 6m/min |
| Workpiece spindle motor power and torque | 4kW; 22Nm | 17Nm |
| Workpiece spindle motor speed | 500r/min | 400r/min |
| Hob arbor motor power and torque | 5.5/7.5kW; 35Nm | 5.2kW; 50Nm |
| Hob arbor motor speed | 5000r/min | 4000r/min |
| Servo motor power of X/Y/Z/A axis | 1.6 / 0.75 / 1.6 / 1.6kW | |
| Servo motor torque of X/Y/Z/A axis | 8 / 2 / 8 / 8Nm | 8 / 2.7 / 8 / 8Nm |
| Net weight/gross weight | 6000/7300kg | 6000/7300kg |
| Overall dimensions | 2300x2200x2240mm | 2300x2200x2240mm |
| Packing dimensions | 2500x2500x2650mm; 2750x1200x1200mm | 2500x2500x2650mm; 2750x1200x1200mm |
Features
1. Hob spindle is directly connected to servo motor; workpiece spindle is directly driven by servo motor through gapless device and supported by high precision double roller bearings.
2. Linear guideway for both axial and radial carriage, which ensures rigidity and speed.
3. Tailstock of GH100 CNC7 is driven by servo motor through ball screw; tailstock of GH100 CNC6 is manually adjusted, and tailstock center is pushed by hydraulic cylinder.
4. For lubrication of workpiece spindle, cutters, guideways and screws, GH100 CNC7 adopts oil-gas lubrication and GH100 CNC6 adopts grease lubrication.
5. With communication programming software, operator only needs to input the workpiece and hob data.
6. Environment-protection structure with full-closed cover.
7. The chip handling system is mounted in the middle of the rigid base which avoids the cutting oil and chip splash.
8. Workpiece spindle and hob spindle realize high speed gear cutting. The hob shank could be easily exchanged.
Optional accessories
1. FANUC 31i for GH100 CNC7;
2. Hob arbor assembly: Φ10, 16, 22mm;
3. Deburring device;
4. Hob setting device for second cutting;
5. Spring collet;
6. Collet holder;
7. Oil mist collector;
8. Automatic loading/unloading device;
Features
1. Hob spindle is directly connected to servo motor; workpiece spindle is directly driven by servo motor through gapless device and supported by high precision double roller bearings.
2. Linear guideway for both axial and radial carriage, which ensures rigidity and speed.
3. Tailstock of GH100 CNC7 is driven by servo motor through ball screw; tailstock of GH100 CNC6 is manually adjusted, and tailstock center is pushed by hydraulic cylinder.
4. For lubrication of workpiece spindle, cutters, guideways and screws, GH100 CNC7 adopts oil-gas lubrication and GH100 CNC6 adopts grease lubrication.
5. With communication programming software, operator only needs to input the workpiece and hob data.
6. Environment-protection structure with full-closed cover.
7. The chip handling system is mounted in the middle of the rigid base which avoids the cutting oil and chip splash.
8. Workpiece spindle and hob spindle realize high speed gear cutting. The hob shank could be easily exchanged.
1. Hob spindle is directly connected to servo motor; workpiece spindle is directly driven by servo motor through gapless device and supported by high precision double roller bearings.
2. Linear guideway for both axial and radial carriage, which ensures rigidity and speed.
3. Tailstock of GH100 CNC7 is driven by servo motor through ball screw; tailstock of GH100 CNC6 is manually adjusted, and tailstock center is pushed by hydraulic cylinder.
4. For lubrication of workpiece spindle, cutters, guideways and screws, GH100 CNC7 adopts oil-gas lubrication and GH100 CNC6 adopts grease lubrication.
5. With communication programming software, operator only needs to input the workpiece and hob data.
6. Environment-protection structure with full-closed cover.
7. The chip handling system is mounted in the middle of the rigid base which avoids the cutting oil and chip splash.
8. Workpiece spindle and hob spindle realize high speed gear cutting. The hob shank could be easily exchanged.
Optional accessories
1. FANUC 31i for GH100 CNC7;
2. Hob arbor assembly: Φ10, 16, 22mm;
3. Deburring device;
4. Hob setting device for second cutting;
5. Spring collet;
6. Collet holder;
7. Oil mist collector;
8. Automatic loading/unloading device;
1. FANUC 31i for GH100 CNC7;
2. Hob arbor assembly: Φ10, 16, 22mm;
3. Deburring device;
4. Hob setting device for second cutting;
5. Spring collet;
6. Collet holder;
7. Oil mist collector;
8. Automatic loading/unloading device;
Technical parameters of GH100 CNC6 CNC7 Gear Hobbing Machine
| Model | GH100 | |
|---|---|---|
| Type | CNC7 | CNC6 |
| CNC system | FANUC 0i-MD | FANUC 0i-MD |
| Controlled axis | 7 axes of 4 axes in synchronization | 6 axes of 4 axes in synchronization |
| Tailstock movement | CNC controlled | Manual |
| Pneumatic system | Yes | No |
| Programming method | Conversational programming | Parametric programming |
| Max. workpiece diameter | 100mm (3.9'') | 100mm (3.9'') |
| Max. module | 3mm | 3mm |
| Number of teeth | 3-999 | 3-999 |
| Max carriage travel | 220mm (8.7’’) | 220mm (8.7’’) |
| Hob head swing angle | ±45° | ±45° |
| Max. diameter of hob | 80mm (3.1’’) | 80mm (3.1’’) |
| Max. hob shifting length | 100mm (3.9'') | 100mm (3.9'') |
| Hob arbor diameters | 13mm (optional: 10, 16, 22mm) | 13mm (optional: 10, 16, 22mm) |
| Rapid feed of X/Z axis | 10m/min | 6m/min |
| Workpiece spindle motor power and torque | 4kW; 22Nm | 17Nm |
| Workpiece spindle motor speed | 500r/min | 400r/min |
| Hob arbor motor power and torque | 5.5/7.5kW; 35Nm | 5.2kW; 50Nm |
| Hob arbor motor speed | 5000r/min | 4000r/min |
| Servo motor power of X/Y/Z/A axis | 1.6 / 0.75 / 1.6 / 1.6kW | |
| Servo motor torque of X/Y/Z/A axis | 8 / 2 / 8 / 8Nm | 8 / 2.7 / 8 / 8Nm |
| Net weight/gross weight | 6000/7300kg | 6000/7300kg |
| Overall dimensions | 2300x2200x2240mm | 2300x2200x2240mm |
| Packing dimensions | 2500x2500x2650mm; 2750x1200x1200mm | 2500x2500x2650mm; 2750x1200x1200mm |
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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.
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
- Rigid Construction: Robust cast iron frame ensures stability
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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)
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Main Components
- Base & Column: Primary support structure
- Knee: Vertically moving saddle supporting the table
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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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At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.
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