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BG320 D3 Spiral Bevel Gear Generating Machine
BG320 D3 Spiral Bevel Gear Generating Machine has cutter tilt mechanism. It is not only used for cutting the formate pinions, but also for the "cutter tilt modification" of the tooth bearings.
- BG320 D3 Spiral Bevel Gear Generating MachineDownload
Technical parameters of BG320 D3 Spiral Bevel Gear Generating Machine
Features of BG320 D3 Spiral Bevel Gear Generating Machine
1. BG320 D3 Spiral Bevel Gear Generating Machine has cutter tilt mechanism. It is not only used for cutting the formate pinions, but also for the “cutter tilt modification” of the tooth bearings, and it is preferable to be used in companion with BG320 W3 for machining gears.
2. This machine is 3-axis CNC machine, i.e. the cradle roll (X- axis), the work spindle rotation (Y- axis) and the sliding base movement (Z- axis), and 3-axis simultaneous movements are possible.
3. The machine adopts the Generating method and the Infeed method and Modified Roll and Cutter Tilt methods as well. A SIEMENS 828D CNC system and a digital servo system are standard.
4. Cutter spindle rotations are controlled by means of a frequency variable motor with an override switch for the stepless speed regulation.
5. A high precision worm and worm wheel pair with a dampening device is used for the cradle drive and the work spindle drive respectively.
6. A cutter tilt device with maximum 30° tilt angle is equipped on the BG320 D3 machine to cut the Formate pinions and modify perfectly the tooth bearings to cut Generating-forming pinions so as to get better tooth bearing modifications.
7. No change gears should be changed, thus shortening the time for the machine set ups.
8. Easy to be operated and facilitates the improvement of productivity.
9. The machine is equipped with an independent sealed electrical cabinet, with an air conditioner.
10. A machine enclosure and an auto-chip conveyor are equipped on the machine.
| Model | Unit | BG320 |
| Type | D3 | |
| CNC system | SIEMENS 828D | |
| Work to be Machined | ||
| Max. outer cone distance | mm | 160 (35° spiral angle, 9’’ cutter) |
| Extreme ratio | 10:1 | |
| Max. pitch diameter | mm | Φ320 (13”) (35° spiral angle) |
| Max. cutting depth | mm | 18 (0.71”) |
| Max. module | mm | 6 |
| Max. face width | mm | 40 (1.6”) |
| Teeth number | 5-100 | |
| Max. radial setting | mm | 127 |
| Root angle | -8°~90° | |
| Work Spindle | ||
| Diameter of taper hole at large end | mm | Φ80 (3.2”) |
| Taper | 1: 20 | |
| Diameter of through hole | mm | Φ45 (1.8”) |
| Diameter of spindle end | mm | Φ130 (5.1”) |
| Cutter Diameter | 6″, 71/2″, 9″ | |
| Cutter spindle | ||
| Diameter of spindle taper at large end | mm | 58.221 (2.3”) |
| Taper | 1: 24 | |
| Workhead setting | ||
| Max offset | mm | ±55 |
| Machine center to spindle nose | mm | 40-260 (1.6-10”) |
| Cutter settings | ||
| Cutter speed | rpm | 40-160 |
| Feed speed | sec./tooth | 6-60 |
| Max cutter tilt angle | 30° | |
| Max axial movement of cutter spindle | mm | 20 |
| Sliding Base setting | ||
| Max. movement from center | mm | Forward 30 |
| Backward 120 | ||
| Net Weight | kg | 6500 |
| Overall Dimensions (L×W×H) | mm | 2400×1950×1725 |
| Total capacity | kVA | 15 |
Features of BG320 D3 Spiral Bevel Gear Generating Machine
1. BG320 D3 Spiral Bevel Gear Generating Machine has cutter tilt mechanism. It is not only used for cutting the formate pinions, but also for the “cutter tilt modification” of the tooth bearings, and it is preferable to be used in companion with BG320 W3 for machining gears.
2. This machine is 3-axis CNC machine, i.e. the cradle roll (X- axis), the work spindle rotation (Y- axis) and the sliding base movement (Z- axis), and 3-axis simultaneous movements are possible.
3. The machine adopts the Generating method and the Infeed method and Modified Roll and Cutter Tilt methods as well. A SIEMENS 828D CNC system and a digital servo system are standard.
4. Cutter spindle rotations are controlled by means of a frequency variable motor with an override switch for the stepless speed regulation.
5. A high precision worm and worm wheel pair with a dampening device is used for the cradle drive and the work spindle drive respectively.
6. A cutter tilt device with maximum 30° tilt angle is equipped on the BG320 D3 machine to cut the Formate pinions and modify perfectly the tooth bearings to cut Generating-forming pinions so as to get better tooth bearing modifications.
7. No change gears should be changed, thus shortening the time for the machine set ups.
8. Easy to be operated and facilitates the improvement of productivity.
9. The machine is equipped with an independent sealed electrical cabinet, with an air conditioner.
10. A machine enclosure and an auto-chip conveyor are equipped on the machine.
Features of BG320 D3 Spiral Bevel Gear Generating Machine
1. BG320 D3 Spiral Bevel Gear Generating Machine has cutter tilt mechanism. It is not only used for cutting the formate pinions, but also for the “cutter tilt modification” of the tooth bearings, and it is preferable to be used in companion with BG320 W3 for machining gears.
2. This machine is 3-axis CNC machine, i.e. the cradle roll (X- axis), the work spindle rotation (Y- axis) and the sliding base movement (Z- axis), and 3-axis simultaneous movements are possible.
3. The machine adopts the Generating method and the Infeed method and Modified Roll and Cutter Tilt methods as well. A SIEMENS 828D CNC system and a digital servo system are standard.
4. Cutter spindle rotations are controlled by means of a frequency variable motor with an override switch for the stepless speed regulation.
5. A high precision worm and worm wheel pair with a dampening device is used for the cradle drive and the work spindle drive respectively.
6. A cutter tilt device with maximum 30° tilt angle is equipped on the BG320 D3 machine to cut the Formate pinions and modify perfectly the tooth bearings to cut Generating-forming pinions so as to get better tooth bearing modifications.
7. No change gears should be changed, thus shortening the time for the machine set ups.
8. Easy to be operated and facilitates the improvement of productivity.
9. The machine is equipped with an independent sealed electrical cabinet, with an air conditioner.
10. A machine enclosure and an auto-chip conveyor are equipped on the machine.
1. BG320 D3 Spiral Bevel Gear Generating Machine has cutter tilt mechanism. It is not only used for cutting the formate pinions, but also for the “cutter tilt modification” of the tooth bearings, and it is preferable to be used in companion with BG320 W3 for machining gears.
2. This machine is 3-axis CNC machine, i.e. the cradle roll (X- axis), the work spindle rotation (Y- axis) and the sliding base movement (Z- axis), and 3-axis simultaneous movements are possible.
3. The machine adopts the Generating method and the Infeed method and Modified Roll and Cutter Tilt methods as well. A SIEMENS 828D CNC system and a digital servo system are standard.
4. Cutter spindle rotations are controlled by means of a frequency variable motor with an override switch for the stepless speed regulation.
5. A high precision worm and worm wheel pair with a dampening device is used for the cradle drive and the work spindle drive respectively.
6. A cutter tilt device with maximum 30° tilt angle is equipped on the BG320 D3 machine to cut the Formate pinions and modify perfectly the tooth bearings to cut Generating-forming pinions so as to get better tooth bearing modifications.
7. No change gears should be changed, thus shortening the time for the machine set ups.
8. Easy to be operated and facilitates the improvement of productivity.
9. The machine is equipped with an independent sealed electrical cabinet, with an air conditioner.
10. A machine enclosure and an auto-chip conveyor are equipped on the machine.
Technical parameters of BG320 D3 Spiral Bevel Gear Generating Machine
| Model | Unit | BG320 |
| Type | D3 | |
| CNC system | SIEMENS 828D | |
| Work to be Machined | ||
| Max. outer cone distance | mm | 160 (35° spiral angle, 9’’ cutter) |
| Extreme ratio | 10:1 | |
| Max. pitch diameter | mm | Φ320 (13”) (35° spiral angle) |
| Max. cutting depth | mm | 18 (0.71”) |
| Max. module | mm | 6 |
| Max. face width | mm | 40 (1.6”) |
| Teeth number | 5-100 | |
| Max. radial setting | mm | 127 |
| Root angle | -8°~90° | |
| Work Spindle | ||
| Diameter of taper hole at large end | mm | Φ80 (3.2”) |
| Taper | 1: 20 | |
| Diameter of through hole | mm | Φ45 (1.8”) |
| Diameter of spindle end | mm | Φ130 (5.1”) |
| Cutter Diameter | 6″, 71/2″, 9″ | |
| Cutter spindle | ||
| Diameter of spindle taper at large end | mm | 58.221 (2.3”) |
| Taper | 1: 24 | |
| Workhead setting | ||
| Max offset | mm | ±55 |
| Machine center to spindle nose | mm | 40-260 (1.6-10”) |
| Cutter settings | ||
| Cutter speed | rpm | 40-160 |
| Feed speed | sec./tooth | 6-60 |
| Max cutter tilt angle | 30° | |
| Max axial movement of cutter spindle | mm | 20 |
| Sliding Base setting | ||
| Max. movement from center | mm | Forward 30 |
| Backward 120 | ||
| Net Weight | kg | 6500 |
| Overall Dimensions (L×W×H) | mm | 2400×1950×1725 |
| Total capacity | kVA | 15 |
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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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