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Products Description
A double column CNC milling machine, also known as a gantry milling machine or bridge milling machine, is a type of computer numerical control (CNC) machining center used for precision machining of large and heavy workpieces. This machine tool is characterized by its robust construction and two-column design, which provides high stability and rigidity, making it suitable for demanding machining tasks.
FRT--- 4025
| Item | Main Parameter | |
| CNC operating system | KND2000MF | |
| Working table size | mm | 4000×2000 |
| Left and right stroke(X) | mm | 4000 |
| Back and forth stroke(Y) | mm | 2700 |
| Up and down stroke (Z) | mm | 1000 |
| Distance from spindle center to column guide | mm | 260 |
| Distance from spindle end to worktable surface | mm | 170-1070 |
| T-slot of worktable (Number/size/spacing) |
mm | 8-22×150 |
| Spindle taper(model/sleeve diameter) | BT50/Φ190 | |
| Use pull stud modle | P50T－1 | |
| Spindle Speed(rpm) | rpm | 6000 |
| X axis ball screw specifications | mm | 80×16 |
| Y axis ball screw specifications | mm | 63×12 |
| Z axis ball screw specifications | mm | 63×10 |
| Machine tool positioning accuracy (GB/T 20957.4-2007 standard) |
mm | 0.01 |
| Repeated positioning accuracy of machine tools (GB/T 20957.4-2007 standard) |
mm | 0.01 |
| X/Y/Z axis rapid shift | m/min | 10/12/10 |
| Cutting speed | m/min | 8 |
| Spindle transmission mode | Synchronous toothed belt drive | |
| XYZ axis servo motor transmission mode and transmission ratio | X-axis reducer directly connected 1:1; YZ directly connected transmission Y-axis 1:1,Z-axis 1:1 |
|
| X,Y axis guide specifications | X-axis four 55-gauge heavy-duty roller linear guides; Y-axis three 55-gauge heavy-duty roller linear guides |
|
| Z axis guide specifications | Rectangle hard rail | |
| Square Ram Size | mm | 500×500 |
| Spindle power | KW | 28 |
| Recommended selection of servo motor parameters | N·M | 55/45/45 |
| Air source flow | >0.5 | |
| Power supply requirements | 380V | |
| Bed cushion height | mm | 30 |
| Workbench load bearing | kg | 15T |
| Machine dimensions | mm | 9200×3800×3500 |
| Light machine net weight | kg | 52t |
features of double column cnc milling machine
Two-Column Design: The machine has two vertical columns on each side of the worktable, which are connected by a bridge-like structure. This design enhances stability and minimizes vibration during machining.
Large Work Envelope: Double column CNC milling machines typically have a spacious work envelope, allowing them to accommodate large and heavy workpieces that may not fit on traditional CNC milling machines.
High Precision: These machines are capable of achieving high levels of precision and accuracy, making them suitable for applications requiring tight tolerances.
Heavy-Duty Capability: Due to their robust construction, double column CNC milling machines can handle heavy-duty machining operations, including roughing and finishing of large parts.
CNC Control: Like all CNC machines, these milling machines are controlled by computer programs that allow for precise control of the tool's movements, speeds, and feeds.
Precision compoments for cNC gantry milling machine
Linear Guides and Rails:
These guide the motion of the machine's moving parts, such as the gantry and the spindle, ensuring smooth and precise movement. High-quality linear guides and rails contribute to stability and accuracy.
Ball Screws:
Ball screws convert rotational motion into linear motion and are essential for the precision of CNC machines. They provide accurate positioning and reduce backlash, enhancing the overall accuracy of the machine.
Spindle:
The spindle is a critical component responsible for rotating the cutting tool. Precision spindles with high rigidity and low runout are essential for achieving accurate and consistent machining results.
Tool Changer:
CNC gantry milling machines often come equipped with automatic tool changers. These systems should be designed for quick and precise tool changes to minimize downtime and maintain machining accuracy.
Drive Motors and Servo Drives:
High-performance drive motors and servo drives are crucial for precise control of the machine's movements. They directly impact the acceleration, deceleration, and positioning accuracy of the gantry and other moving parts.
Controller and Software:
The CNC controller and associated software are key components that interpret the programmed instructions and control the motion of the machine. Advanced control systems contribute to higher precision and smoother operation.
Machine Frame and Bed:
The structural integrity of the machine frame and bed is critical for maintaining stability during machining operations. A rigid and well-designed frame helps minimize vibrations and deflections, ensuring accurate machining results.
Coolant and Lubrication Systems:
Proper coolant and lubrication systems are essential for maintaining the temperature and lubricating the moving parts, preventing wear and ensuring consistent performance.
Encoders:
Encoders provide feedback to the CNC controller, enabling it to monitor the position of the machine's moving parts. High-resolution encoders contribute to improved accuracy and repeatability.
Damping Systems:
To reduce vibrations and dampen any oscillations during machining, damping systems can be integrated into the machine design. This is especially important for achieving high precision in milling operations.
main functions of double column cnc milling machine
Milling: The primary function of these machines is milling, which involves removing material from a workpiece using a rotating cutting tool. This can include tasks like contouring, profiling, pocketing, and drilling.
Drilling: Double column CNC milling machines can perform drilling operations with precision, creating holes of various sizes and depths in a workpiece.
Boring: Boring operations involve enlarging existing holes or creating precise cylindrical holes in a workpiece. This function is essential for applications like engine block manufacturing.
Tapping: These machines can also perform tapping operations, which involve threading holes in a workpiece for fasteners.
applications of double column cnc milling machine
Aerospace: These machines are commonly used in the aerospace industry to produce large structural components like wing spars, fuselage frames, and landing gear components.
Automotive: In the automotive sector, double column CNC milling machines are used for manufacturing large engine blocks, transmission components, and chassis parts.
Mold and Die Making: These machines are suitable for producing molds and dies for various industries, including plastic injection molding and die-casting.
Energy Sector: They are used in the production of components for renewable energy systems, such as wind turbine parts and hydroelectric components.
Heavy Machinery: Double column CNC milling machines are employed in the fabrication of heavy machinery, including components for construction equipment, mining machinery, and industrial equipment.
General Manufacturing: Any industry that requires the machining of large and complex parts can benefit from the versatility and precision of these machines.
Types of workpieces can be processed
Large metal parts: Double column CNC milling machines are often used to machine large metal components, such as those used in the aerospace and automotive industries. This includes parts like aircraft wings, engine components, and automotive chassis.
Mold and die components: These machines are ideal for manufacturing molds and dies for industries like injection molding and die casting. They can produce intricate and highly precise cavities and contours on mold and die components.
Tooling and fixtures: Double column CNC milling machines are used to create custom tooling and fixtures for manufacturing processes. They can machine complex shapes and contours needed for specialized tooling and fixtures.
Heavy-duty machining: These machines are capable of heavy-duty machining operations, making them suitable for tasks like roughing and finishing of large steel and cast iron workpieces.
Structural components: In industries such as construction and heavy machinery manufacturing, double column CNC milling machines are used to machine structural components like beams, columns, and frames.
Marine components: Shipbuilders and marine industries use these machines to produce large and complex components for ships and submarines, such as propellers, hull components, and control surfaces.
Energy sector components: Components used in the energy sector, such as wind turbine parts, hydroelectric equipment, and oil rig components, can be machined using double column CNC milling machines.
Aerospace components: These machines are commonly used to produce aerospace components like landing gear parts, wing spars, and fuselage sections.
Automotive components: In the automotive industry, double column CNC milling machines are used to manufacture engine blocks, transmission housings, and suspension components.
Medical device components: Precision is critical in the medical device industry, and double column CNC milling machines can produce highly accurate components for devices like implants and prosthetics.
General machining: These machines can also be used for general machining tasks in various industries, such as drilling, tapping, and contour milling of a wide range of materials, including plastics and composites.
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