A CNC (Computer Numerical Control) gantry machining center is a large-scale machine tool that combines a gantry structure with CNC technology for precise and automated machining operations. It is used in industries like aerospace, automotive, and manufacturing.The CNC aspect of the machine enables automation and precise control over the machining process. A computer system controls the movements of the machine's tools, such as milling, drilling, and cutting, based on programmed instructions. This programming guides the tool paths and machining parameters to achieve accurate and consistent results.With CNC gantry machining centers, complex parts and components can be produced with high precision and repeatability. The machine's versatility allows for various machining operations and the use of different tooling configurations to meet specific requirements.

 

 

 

 

A CNC (Computer Numerical Control) gantry machining center is a highly versatile and advanced machining tool used in various industries for a wide range of machining operations. It combines the capabilities of a milling machine and a machining center, offering increased efficiency, precision, and productivity.

 

Here are the main functions and features of a CNC gantry machining center:

Milling Functions: A CNC gantry machining center performs milling operations, which involve removing material from a workpiece using rotating cutting tools. It can execute tasks such as face milling, contour milling, slotting, drilling, and tapping with high precision and efficiency.

 

Multi-axis Machining: Gantry machining centers typically feature three or more axes of movement, including X, Y, and Z axes. Some models may also include additional rotational or tilting axes. These multi-axis capabilities enable complex machining operations, such as 3D contouring, simultaneous milling, and angled hole drilling.

 

Large Work Area: Gantry machining centers are known for their large work area or workspace. The gantry structure provides a stable and rigid platform, allowing the machine to accommodate large workpieces and handle tasks that require extended travel distances.

 

High Precision: CNC gantry machining centers offer exceptional precision and accuracy. They utilize computer-controlled systems to execute precise movements, maintain tight tolerances, and deliver high-quality finished products. Advanced features like linear scales, encoders, and servo motors contribute to their precise machining capabilities.

 

Automatic Tool Changing: Gantry machining centers often incorporate automatic tool changers (ATCs) that allow for efficient and rapid tool changes during machining operations. This eliminates the need for manual tool changes, reduces downtime, and enables the use of multiple tools for different operations without operator intervention.

 

Tool Length and Diameter Measurement: Some CNC gantry machining centers include tool length and diameter measurement systems. These systems automatically measure the length and diameter of the cutting tools, ensuring accurate tool offsets and minimizing setup time.

 

High-Speed Machining: Gantry machining centers are capable of high-speed machining (HSM) operations. With powerful spindles and advanced control systems, they can achieve high cutting speeds and feed rates while maintaining precision. HSM techniques enable faster material removal rates and shorter machining times.

 

Advanced Control Systems: CNC gantry machining centers are equipped with sophisticated control systems. These systems allow for the programming, monitoring, and optimization of machining operations. They often integrate with CAD/CAM software, enabling seamless data transfer and efficient programming.

 

Coolant and Chip Management: Gantry machining centers are designed with coolant and chip management systems to ensure effective removal of chips and cooling of the cutting tools and workpiece. Proper coolant flow and chip evacuation help maintain machining accuracy, protect cutting tools, and improve overall productivity.

 

Automation and Integration: Gantry machining centers can be integrated into automated manufacturing systems, such as production lines or robotic cells. They can interface with robots, conveyors, and other equipment to enable seamless material handling and maximize productivity.

 

 

CNC gantry-type milling machine are mobile worktable structures, mainly composed of worktable, bed, sliding seat, column.crossbeam, ram, hydraulic system, lubrication system, pneumatic system, cooling filtration system, chip removal device，fixed operation panel, and electronic control system.

 

How does CNC gantry machining center ensure workpiece accuracy

CNC gantry machining centers employ various mechanisms and techniques to ensure workpiece accuracy. Here are some key factors that contribute to workpiece accuracy in CNC gantry machining centers:

 

Rigidity and Stability: Gantry machining centers are typically designed with a robust and rigid structure to minimize vibrations and deflection during machining. The machine's frame, columns, and crossbeam are constructed using high-quality materials and optimized for stiffness to maintain positional accuracy.

 

Precision Linear Guides: Gantry machining centers utilize high-precision linear guides for the movement of the axes. These guides ensure smooth and accurate motion, reducing backlash and positioning errors. They provide stability and maintain the desired positioning of the tool relative to the workpiece.

 

Servo Motors and Feedback Systems: Gantry machining centers are equipped with servo motors that provide precise control over the movement of each axis. These motors receive feedback from encoders or linear scales that measure the actual position of the axes. The feedback data is continuously compared with the desired positions, allowing the control system to make real-time adjustments to ensure accuracy.

 

CNC Control System: The CNC control system is responsible for interpreting the part program and translating it into precise movements of the gantry machining center. The control system uses algorithms to compensate for factors like machine dynamics, thermal expansion, and tool wear. It continuously monitors the machine's position and adjusts the commands to achieve the desired accuracy.

 

Tool Measurement and Compensation: Gantry machining centers may incorporate automatic tool measurement systems that verify the length and diameter of cutting tools. This information is used to compensate for any tool deflection or wear during the machining process, ensuring accurate cutting and dimensional integrity of the workpiece.

 

Thermal Stability: Thermal stability is crucial for maintaining accuracy in gantry machining centers. Advanced machines may incorporate temperature sensors and compensation algorithms to adjust for thermal expansion and contraction. The machine's structure and coolant systems are designed to minimize the effects of temperature variations on the workpiece.

 

Calibration and Maintenance: Regular calibration and maintenance of the gantry machining center are essential to ensure workpiece accuracy. This includes checking and aligning the axes, verifying the accuracy of the feedback systems, and inspecting and replacing worn components.

 

By combining these elements, CNC gantry machining centers can achieve high levels of workpiece accuracy. However, it is important to note that workpiece accuracy also depends on factors such as the quality of the cutting tools, the stability of the workholding system, and the accuracy of the part program and toolpath generation.

 

 

Technical specification		FRT-2217	FRT-3018	FRT-4022	FRT-6035
Travel
Work table travel(X/Y/Z)	mm	2200/1700/1000	3000/1800/1000	4000/2200/1000	6000/3500/1200
Distance from spindle surface to worktable	mm	0-1200	0-1200	0-1400	0-1600
Rail way	Two linear guide rail, one hardened rail
Work table
Table size	mm	2200x1300	3000x1500	4000x1800	6000x2500
The maximum load capacity of the work table	T	5	7	12	20
Splindle
The spindle taper(model sleeve diameter)	mm	BT50/155	BT50/155	BT50/190	BT50/190
The spindle motor power	kw	18	22	26	30
Splindle speed	rpm	6000	6000	6000	6000
Accuracy
Position Precision	mm	0.01/1000	0.01/1000	0.01/1000	0.01/1000
Repeated position precision	mm	±0.01	±0.01	±0.01	±0.01
Size
Net weight	T	23	30	40	75

 

 

1, CNC control system standard function

2, Spindle constant temperature system

3, automatic power off device

4, hydraulic unit system

5, cutting fluid unit

6, automatic lubrication system

7, three-color warning light

8, working light

9, hand wheel control box

10, RS-232 interface

11, heat exchanger configuration

12, chip remover and chip bucket

13, Foundation bolts and level adjustment pads

14, controller operation manual and circuit diagram

15, Mechanical Safety Operation Manual

16, precision test table

17, splash protection and manual door

18, a set of mechanical adjustment tools

 

 

☆CNC system Simens/Mutsubishi/Fanuc/KND

☆Each axis grating device☆Disc magazine /chain magazine

☆Spindle center water output 2-7MPa

☆12000-15000 mechanical spindle

☆Four-axis function

☆Right-angle milling Head

 

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