| Item | PM1400 CNC | |
| Table size | 2000x1000mm | 2500x1000mm |
| Max table load | 6000kg | 8000kg |
| Table travel X | 2100mm | 2600mm |
| Table travel Y | 1400mm | |
| Table travel Z | 800mm | |
| Spindle nose to table surface | 150-950mm | |
| Distance between two column | 1400mm | |
| Spindle speed range and driving method | 6000rpm belt driving |
|
| Spindle taper | BT50 | |
| Spindle diameter | 155mm | |
| Rapid traverse speed – X axis | 12000mm/min | |
| Rapid traverse speed – Y axis | 12000mm/min | |
| Rapid traverse speed – Z axis | 10000mm/min | |
| Feed rate ( X / Y / Z axes) | 8000mm/min | |
| Number of tool magazine--opt. | 24/opt.-32 | |
| Tool magazine type | Disc type | |
| Controller | Siemens 828D | |
| Spindle motor power (straight/15 minutes) | 15/18.5kW | |
| Positioning accuracy (JIS standard) | ±0.005/300mm | |
| Repeatability Positioning accuracy (JIS standard) | ±0.003/1000mm | |
| Net weight | 15000kg | 17000kg |
| Overall size | 5200x3400x4000mm | 6500x3400x4000mm |
Features of PM1400 Plano Type Milling Machine
1. Bed, columns and travel tracks form a solid cast-iron frame structure for high rigidity under hard machining conditions and high table loads.
2. The gantry construction is fully integrated into the machine frame for maximum rigidity.
3. The traverse height is adjustable, ensuring high rigidity even with flat workpiece.
4. Rigid guides with ground surfaces support the table across the entire travel to ensure constant high accuracy.
| Item 01 | Descriptions | |
| 01.01 | Siemens 828D CNC Controller | |
| 01.02 | BT50-155 Taiwan spindle 6000rpm | |
| 01.03 | Double spiral + chain type chip conveyor | |
| 01.04 | Vertical milling head | One set |
| 01.05 | Central lubrication | |
| 01.06 | Coolant system | |
| 01.07 | Semi-protection cover |
| Item 02 | Descriptions | |
| 02.01 | BT50-190 Taiwan spindle 6000rpm | |
| 02.02 | Center water outlet | |
| 02.03 | Spindle Oil cooler unit | |
| 02.04 | Water gun | |
| 02.05 | Spindle with Taiwan GTP121 gearbox | |
| 02.06 | Taiwan GONG YANG N75 Right-angular Milling Head | |
| 02.07 | Renishaw TS27R tool automatic setting | |
| 02.08 | Taiwan Deta 24 disc type tool magazine |
| Descriptions | Brand |
| Ball screw | Taiwan HIWIN |
| Linear guideway | Taiwan HIWIN/PMI |
| Bearing | NSK |
| Spindle | Taiwan ROYAL |
| eletronic component | Schneider |
| Central lubrication | Japan HERG |
| Tool magazine | Taiwan Deta |
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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