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The gantry double-column machining center, also known as the double-column machining center, is a large machine tool with strong rigidity, symmetrical structure, and high stability. It uses two vertical columns to provide stability and precision for machining large and complex parts, improve the dynamic performance of the machine tool, and achieve high power, high torque, high efficiency, high precision machining, convenient operation, and safety. The gantry double-column machining center is an indispensable and important equipment in the modern manufacturing industry, especially for large workpieces that require high precision and high efficiency. The gantry double-column machining center can meet the needs of modern manufacturing for the machining of large and complex workpieces. With the continuous advancement of technology, the performance and functions of the gantry double-column machining center are also constantly improving to meet the increasingly complex machining needs.
gantry-type machining center Feature

1. BBT50-6000rpm high rigidity spindle
2. X/Y/Z rapid displacement 12112112m/min
3. Three-axis rail direct connection, optional Z-axis hard rail
4. FANUC FANOVI system
5. Four-line rail symmetrical design, high-speed and high-precision cutting
6. Integrated symmetrical portal bridge, multi-turn box structure, full machine rigidity
Advantages of Gantry Double Column Machining Center
1. The gantry machining center adopts a high-precision CNC system and realizes multi-axis linkage control through a computer control system to ensure high precision and high quality of the machining process. The machining dimensional accuracy is usually between 0.005~0.01mm, which is not affected by the complexity of the parts.
2. The overall structure of the gantry machining center is a portal frame, which is composed of a solid double column and a top beam. The middle crossbeam connects the two columns. This structure provides extremely high stability and rigidity, can withstand heavy loads and maintain high-precision machining for a long time, and is particularly suitable for machining large and complex workpieces.
3. The gantry machining center can adapt to various materials and various processing processes, such as metals, non-metals, composite materials, etc. In addition, different tools and fixtures can be configured according to different processing requirements to achieve a variety of processing methods.
4. The gantry double-column machining center maintains high stability and high-precision machining work based on the strong rigidity, symmetrical structure, and strong load-bearing capacity of traditional gantry machine tools.
5. The gantry double-column machining center has a large worktable size and load-bearing capacity, as well as high-precision positioning and repeated positioning accuracy. These technical parameters ensure the processing capacity and precision of the machine tool.
Gantry Double Column structure
1. Strong rigidity and symmetrical structure: The gantry double-column CNC gantry machining center maintains the advantages of strong rigidity, symmetrical structure, and strong load-bearing capacity based on traditional gantry machine tools.
2. High-strength cast iron material: The bracket, beam, and table are made of high-strength, high-quality cast iron to ensure the stability and durability of the machine tool.
3. Thermal cooling compensation system: The spindle is equipped with a thermal cooling compensation system to keep the temperature constant and reduce the influence of thermal deformation on the processing accuracy.
4. Direct-drive X-Y transmission device: A direct-drive X-Y transmission device and a torque amplification device are designed on the X-axis to improve the X-Y movement accuracy and realize the combined control of speed and accuracy.
5. Wide base and solid column: The wide base, solid column, and beam are adopted to provide the best structural rigidity and ensure the best geometric accuracy of the three-axis travel.
6. Fully cast components: Fully cast components, the guide rails are precisely scrapped to ensure the best rigidity and low friction.
These structural design features make the gantry double-column machining center excel in high-precision machining, heavy cutting, and stability and are suitable for a variety of heavy and precision machining tasks.
Double-Column Machining Center Parameters
| Items | Specifications | Units | GMM-1517 |
| Travel | X/Y/Z Axis | mm | 1500*1700*1000 |
| Distance From Spindle Nose to Worktable | mm | 150-1150 | |
| Gantry Width | mm | 1700 | |
| Worktable | Table Size (L*W) | mm | 1500*1400 |
| The Maximum Load Capacity of The Workbench | t | 2 | |
| T-Slot | mm | 7-22*200 | |
| Spindle | Spindle, Taper Hole (Model/Installation Size) | mm | BBT50 |
| Spindle Speed | rpm | 6000 | |
| Spindle Max Speed | rpm | 4500 | |
| Spindle Drive Mode | Belt Type | ||
| Feed | X/Y/Z Axis Rapid Feed | m/min | 2012/12/10 |
| Cutting Feed | mm/min | 8000 | |
| Tool changing device (optional) | Tool Change Method | Side-mounted | |
| Handle Specifications | type | BT50 | |
| Tool Capacity | tools | 24 | |
| Maximum Tool Diameter (Adjacent Tool) | mm | φ112 | |
| Maximum Tool Diameter (Without Adjacent Tool) | mm | φ200 | |
| Max Tool Length | mm | 300 | |
| Max Tool Weight | kg | 18 | |
| Fastest Tool Change Time | sec | 4.9 | |
| Motor | Spindle Motor | kw | βiIP30/8000 |
| Three-Axis Servo Motor | kw | bis40/2000/bis40/2000/bis40B/2000 | |
| Cutting Water Pump Motor | m/h-m | 4-60 | |
| Tolerance(GB/T 19362.2-2017) | Positioning Accuracy | mm | 0.02/0.02/0.018 |
| Repeatability | mm | 0.016/0.014/0.008 | |
| Power Requirement | Power Requirements | kva | 45 |
| Air Source Requirements | Kg/cm² | 6^8 | |
| Machine Size | Length*Width*Height | mm | 4126*4712*3941 |
| Weight | t | 16 |
Double-column machining center Application
The equipment is widely used in ships, metallurgy, mining machinery, electric power, engineering machinery, heavy industry machinery, aviation, aerospace, automobiles, and navigation for processing large parts with complex structures. They can also be used to manufacture machine tools such as lathes and milling machines. The gantry double-column machining center plays an important role in many fields due to its high precision, high efficiency, and wide applicability. With the continuous advancement of technology, its application scope is expected to be further expanded to large-scale processing fields such as machining to meet the processing needs of different industries.
1. Shipbuilding
2. Mining machinery
3. Electric power
4. Metallurgy
5. Construction machinery
6. Heavy machinery
7. Aerospace
8. Automotive
Processing process
1. The workbench first moves along the Y-axis to the specified position.
2. The tool moves along the X-axis to the starting point of processing.
3. The tool starts to rotate, and the workbench descends along the Z axis so that the tool contacts the workpiece and starts cutting.
4. As the processing proceeds, the workbench and tool will move continuously or intermittently according to the program instructions to complete the predetermined processing shape
Standard Accessories
| Rigid Tapping | Dual LED Work Light | Spindle Nose Air Blow | M30 Auto Off |
| Automatic Lubricating System | Heat Exchange for Electric Cabinet | LED 3 Color Warning Light | Leveling Bolts and Pads |
| Semi-Enclosed Guard | Dual-Screw Type Chip Conveyor | Chain Type Chip Conveyor and Cart |
Options
| Optical Linear Scale | Tool Breakage System | Oil Mist System | Air Conditioner |
| CTS | Chip Conveyor System | Oil Skimmer | Auto Parts Probe Measuring System |
| 40T ATC | Rotary Table | 90° Manual Milling Head | 90° Auto Milling Head with AHC |
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