| Model | Unit | GH2000 CNC2 |
|---|---|---|
| CNC system | SIEMENS 828D; 2-axis | |
| Max workpiece diameter with/without rear column | mm | Φ1500/2000 (59/79”) |
| Max module | mm | 24 |
| Min No. of teeth on the work | 12 | |
| Max worktable speed | r/min | 3 |
| Worktable diameter x bore diameter | mm | Φ1650x280 (65x11”) |
| Hob speed/step | r/min | 10-100; stepless |
| Distance between hob axis and worktable surface | mm | 600-1300 (24-51”) |
| Central distance between hob and worktable | mm | 150-1230 (5.9-48”) |
| Distance between tailstock end face and worktable surface | mm | 1120-1630 (44-64”) |
| Max hob diameter and length | mm | Φ310x300 (12x13”) |
| Max hob head swivel angle | degree | ±45 |
| Taper of hob spindle | Morse No. 6 | |
| Total power / main motor power | kVA/kW | 35.45/22 |
| T-slot | 12xM24 | |
| Overall dimension (L x W x H) | mm | 6200x3260x3200 |
| Net weight / Gross weight | kg | 34000/38000 |
Applications
Based on the principle of continuous indexing, GH2000 CNC2 CNC gear hobbing machine is developed based on GH2000, CNC axes: X-axis--radial feed and Z-axis--axial feed. GH2000 CNC2 can work in the conventional or climb method capable of cutting worm wheels with radial or tangential feed driven by motor. GH2000 CNC2 CNC gear hobbing machine is equipped with an automatic shut down device, safety device and lubrication system, which is characterized by consistent working accuracy, good static dynamic and rigidity. GH2000 CNC2 is best suited for hobbing large gears in industries, such as mine, oil, marine engineering machinery etc.
Standard accessories
1. Hob arbor assembly: Φ50, 60mm;
2. Change gears;
3. Tools for installation and set up;
Optional accessories
1. Hob arbor assembly: Φ32, 40mm;
2. Column hoop and center;
3. Single indexing device;
Based on the principle of continuous indexing, GH2000 CNC2 CNC gear hobbing machine is developed based on GH2000, CNC axes: X-axis--radial feed and Z-axis--axial feed. GH2000 CNC2 can work in the conventional or climb method capable of cutting worm wheels with radial or tangential feed driven by motor. GH2000 CNC2 CNC gear hobbing machine is equipped with an automatic shut down device, safety device and lubrication system, which is characterized by consistent working accuracy, good static dynamic and rigidity. GH2000 CNC2 is best suited for hobbing large gears in industries, such as mine, oil, marine engineering machinery etc.
1. Hob arbor assembly: Φ50, 60mm;
2. Change gears;
3. Tools for installation and set up;
| Model | Unit | GH2000 CNC2 |
|---|---|---|
| CNC system | SIEMENS 828D; 2-axis | |
| Max workpiece diameter with/without rear column | mm | Φ1500/2000 (59/79”) |
| Max module | mm | 24 |
| Min No. of teeth on the work | 12 | |
| Max worktable speed | r/min | 3 |
| Worktable diameter x bore diameter | mm | Φ1650x280 (65x11”) |
| Hob speed/step | r/min | 10-100; stepless |
| Distance between hob axis and worktable surface | mm | 600-1300 (24-51”) |
| Central distance between hob and worktable | mm | 150-1230 (5.9-48”) |
| Distance between tailstock end face and worktable surface | mm | 1120-1630 (44-64”) |
| Max hob diameter and length | mm | Φ310x300 (12x13”) |
| Max hob head swivel angle | degree | ±45 |
| Taper of hob spindle | Morse No. 6 | |
| Total power / main motor power | kVA/kW | 35.45/22 |
| T-slot | 12xM24 | |
| Overall dimension (L x W x H) | mm | 6200x3260x3200 |
| Net weight / Gross weight | kg | 34000/38000 |
Knee Type Milling Machine: Precision Versatility for Industrial Manufacturing
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.
Key Applications
- Tool & Die Making: Precision molds, jigs, fixtures
- Prototyping: Rapid part development
- Maintenance Shops: Equipment repair & part fabrication
- General Machining: Slotting, drilling, facing, keyway cutting
- Aerospace & Automotive: Component manufacturing
Distinctive Features & Advantages
- Vertical Adjustability: Knee movement enables quick workpiece height changes
- Rigid Construction: Robust cast iron frame ensures stability
- Manual & CNC Options: Traditional control or computer numerical precision
- Turret Design (Common): Swiveling milling head for multi-angle machining
- Wide Workpiece Compatibility: Handles various sizes and shapes
Primary Classifications
- Vertical Knee Mill: Spindle axis perpendicular to table (most common)
- Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
- Universal Knee Mill: Table swivels for complex angular cuts
- Turret Mill: Head rotates on turret for flexible positioning
Main Components
- Base & Column: Primary support structure
- Knee: Vertically moving saddle supporting the table
- Saddle & Table: Hold and position the workpiece (X/Y axes)
- 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
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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