| Model | Unit | GSM500 | |
|---|---|---|---|
| Type | A3 | ||
| Simultaneous control | SIEMENS 828D, 3-axis | ||
| Maximum diameter of workpiece | External gear | mm | 500 |
| Internal gear | 625 | ||
| Maximum module of workpiece | mm | 10 | |
| Maximum face width | mm | 130 | |
| Maximum stroke of cutter spindle | mm | 150 | |
| Number of strokes for cutter spindle | min-1 | 0~500 | |
| Diameter of cutter spindle | mm | 90 | |
| Diameter of cutter spindle journal | mm | 31.743 | |
| Travel position adjustment of cutter spindle | mm | 20 | |
| Distance between bearing surface of cutter and worktable surface | mm | 130~300 | |
| Distance between cutter spindle axis and worktable spindle axis | mm | 0~380 | |
| Cutter relieving amount | mm | ≥0.5; bi-directional | |
| Angular cutter relieving amount | mm | ± 30 | |
| Diameter of worktable | mm | Φ625 | |
| Diameter of worktable hole | mm | Φ120 | |
| Number of T-slot | 8 | ||
| Radial feed of column | mm/stroke | 0.01~0.25 | |
| Rotary feed of cutter | mm/stroke | 0.01~2.5 | |
| Rapid radial feed of column | m/min | 1 | |
| Power of main motor | kW | 11 | |
| Total capacity | kVA | 40 | |
| Machine weight | kg | 13000 | |
| Overall dimensions (L x W x H) | mm | 2850×1790×2670 | |
1. FANUC 0i-MD;
2. Slide type saddle;
3. Increase of bed height (max 500mm);
4. Tilt worktable (max tilt angle ±12°);
5. Hydrostatic saddle;
6. Helical guide (max helical angle 30°);
7. Tailstock center device;
8. Different cutter adaptors;
9. Automatic loading and unloading;
10. Automatic safety door;
11. Fixtures;
12. Oil mist collecting device;
13. Deburring device;
14. Software for cutting non-circular gears;
Introduction
The high efficiency and high precision CNC gear shapers is equipped with nice and environmental protection full enclosures, the radial feed is performed by the traverse of the entire column. Gears of modules from 0.125mm to 4mm can be machined and the machining accuracy can reach Grade 6 of the GB Standard. Typical workpiece such as the internal gears in the deep holes and the cluster gears can be machined when a slide-type saddle is equipped on the machine. Non-circular gears, triangle-shape internal gears used in the internal gear pumps and special gears can be cut when special equipment is adopted for the machine, or by means of using a special cutting mode of great-helical rotary feed. The machine is suitable for single-job or small-lot production, and preferable for the mass production on the production lines.
The high efficiency and high precision CNC gear shapers is equipped with nice and environmental protection full enclosures, the radial feed is performed by the traverse of the entire column. Gears of modules from 0.125mm to 4mm can be machined and the machining accuracy can reach Grade 6 of the GB Standard. Typical workpiece such as the internal gears in the deep holes and the cluster gears can be machined when a slide-type saddle is equipped on the machine. Non-circular gears, triangle-shape internal gears used in the internal gear pumps and special gears can be cut when special equipment is adopted for the machine, or by means of using a special cutting mode of great-helical rotary feed. The machine is suitable for single-job or small-lot production, and preferable for the mass production on the production lines.
| Model | Unit | GSM500 | |
|---|---|---|---|
| Type | A3 | ||
| Simultaneous control | SIEMENS 828D, 3-axis | ||
| Maximum diameter of workpiece | External gear | mm | 500 |
| Internal gear | 625 | ||
| Maximum module of workpiece | mm | 10 | |
| Maximum face width | mm | 130 | |
| Maximum stroke of cutter spindle | mm | 150 | |
| Number of strokes for cutter spindle | min-1 | 0~500 | |
| Diameter of cutter spindle | mm | 90 | |
| Diameter of cutter spindle journal | mm | 31.743 | |
| Travel position adjustment of cutter spindle | mm | 20 | |
| Distance between bearing surface of cutter and worktable surface | mm | 130~300 | |
| Distance between cutter spindle axis and worktable spindle axis | mm | 0~380 | |
| Cutter relieving amount | mm | ≥0.5; bi-directional | |
| Angular cutter relieving amount | mm | ± 30 | |
| Diameter of worktable | mm | Φ625 | |
| Diameter of worktable hole | mm | Φ120 | |
| Number of T-slot | 8 | ||
| Radial feed of column | mm/stroke | 0.01~0.25 | |
| Rotary feed of cutter | mm/stroke | 0.01~2.5 | |
| Rapid radial feed of column | m/min | 1 | |
| Power of main motor | kW | 11 | |
| Total capacity | kVA | 40 | |
| Machine weight | kg | 13000 | |
| Overall dimensions (L x W x H) | mm | 2850×1790×2670 | |
1. FANUC 0i-MD;
2. Slide type saddle;
3. Increase of bed height (max 500mm);
4. Tilt worktable (max tilt angle ±12°);
5. Hydrostatic saddle;
6. Helical guide (max helical angle 30°);
7. Tailstock center device;
8. Different cutter adaptors;
9. Automatic loading and unloading;
10. Automatic safety door;
11. Fixtures;
12. Oil mist collecting device;
13. Deburring device;
14. Software for cutting non-circular gears;
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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