Gantry Machining Center
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Gantry Machining Center

The gantry machining center is a CNC machine tool with the Z-axis of the spindle set perpendicularly to the worktable. It features a door-type frame structure composed of two columns and a top beam, which has high rigidity and is suitable for processing large and complex workpieces in fields such as aerospace and shipbuilding. Its main structure includes a rectangular worktable, a lifting crossbeam, and a ram system. It is equipped with turret or chain-type tool magazines and can expand its processing capabilities through accessories such as right-angle heads.

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Product Introduction

Machine Tool Features

1. Bed – Worktable

Major components including the bed, worktable, column, crossbeam, saddle, and spindle headstock are manufactured using high-strength cast iron and resin sand casting technology. These components are optimized through 3D CAD software, featuring rationally arranged ribs to enhance rigidity and strength. The machine adopts a fixed-bed gantry framework. The column and crossbeam form an integrated structure, while the worktable moves along the X-axis on the bed. The columns are fixed at both ends of the bed, and the spindle headstock moves vertically along the Z-axis on the crossbeam mounted between the columns.

Bed Guideways: Utilize imported heavy-duty linear roller guides, ensuring excellent accuracy retention, high sensitivity and precision of the worktable, and superior servo drive performance. They offer high load capacity, excellent vibration damping during cutting, which improves overall machine performance, enhances precision and its long-term stability, and extends machine service life.

X-Axis Drive: A servo motor, connected via a planetary reducer (for X-axis models over 3 meters), drives a pre-tensioned ball screw. This mechanism moves the worktable back and forth on the bed, providing X-axis feed motion. The screw pre-tensioning increases the stiffness of the screw assembly.

2. Crossbeam

The crossbeam guideways employ a vertically crossed layout, providing excellent mechanical properties. This design significantly improves cutting accuracy and rigidity, ensures sufficient bending and torsional stiffness of the crossbeam, enabling the machine to handle heavy-duty cutting operations.

Crossbeam Guideways: Utilize imported heavy-duty linear roller guides, known for their excellent accuracy retention. They are suitable for high-power cutting and ensure stable operation.

Y-Axis Drive: A servo motor drives a ball screw, which moves the saddle left and right along the crossbeam, providing Y-axis feed motion.

3. Spindle Headstock

The spindle headstock adopts a ram structure with linear guides. The Z-axis utilizes four guideways, providing excellent vibration absorption and ensuring stable cutting during operation.

Z-Axis Drive: A servo motor drives a ball screw, which moves the spindle headstock up and down on the saddle, providing Z-axis feed motion. The Z-axis servo motor is equipped with an automatic brake that engages during power loss, locking the motor shaft to prevent movement.

Spindle Assembly: Manufactured by a specialized Taiwanese factory, ensuring high precision and performance. Tool clamping is achieved via disc springs on the spindle applying tension through a four-finger claw mechanism onto the pull stud of the tool holder, securing the tool tightly within the spindle taper.The machine features a spindle orientation function.

4. Pneumatic System

Primarily used for tool clamping/unclamping, spindle center through-air, and spindle nose seal air blast.

5. Machine Protection

X-axis bed guideways are protected by stainless steel telescopic covers.

Y-axis crossbeam guideways are protected by bellows-type covers.

The entire machine is fully enclosed to contain chips and coolant splash, ensuring a safe and comfortable working environment for the operator.

6. Lubrication System

Bearings for all three axes are lubricated with grease.

All ball screw assemblies are lubricated automatically with oil.

Guideways for all three axes have automatic lubrication points. Lubricant is distributed to the guideway pairs, with the lubrication cycle automatically controlled by the CNC system.

7. Balancing System

Utilizes a nitrogen-over-oil balancing cylinder to ensure stable movement of the spindle headstock. A hydraulic cylinder is used for tool unclamping, while disc springs provide the clamping force for the automatic tool clamping device.

8. Cooling System

The spindle ram features external tool coolant capability at its nose. Coolant is typically non-corrosive, such as emulsion or light mineral oil.

9. Chip Removal System

Chips generated on the worktable are conveyed by screw conveyors on both sides of the bed to a front-mounted chain-type conveyor.

10. Electrical Cabinet Heat Exchanger

The sealed heat exchanger prevents air exchange between inside and outside the cabinet, effectively blocking moisture, oil mist, and dust. It is compact, lightweight, and requires simple maintenance.

Electrical Cabinet Air Conditioner (Optional): A dedicated cabinet cooler (air conditioner) can be installed based on external environmental conditions. It features electronic temperature control (±1°C), maintaining a constant temperature inside the cabinet, controlling heat, and providing dehumidification to extend the lifespan of electronic components.

11. Tool Magazine Structure (Standard)

The machine is equipped with a reliable Taiwanese-made 24-tool arm-type (disc cam type) tool changer, offering short tool change times.

Chain-Type Tool Magazine (Optional): Offers a 40-tool capacity. It features a double-arm automatic tool changer with a cam-driven mechanism, motor-driven for speed and stability. It includes a large-capacity tool pot storage, driven by a motor and cylindrical cam positioning mechanism for high stability.

12. Spindle Oil Chiller (Optional)

An optional constant-temperature controlled oil chiller prevents thermal growth of the spindle from affecting machining accuracy. It improves machining precision and efficiency, prevents spindle center shift or thermal deformation, extends machine life, stabilizes oil pressure, prevents oil chattering, and operates with low noise.

13. Machine Quality Control

Quality control is implemented through standardized production processes and professional attention to detail. From casting machining to final assembly, every step follows strict, professional standards. Every assembly procedure, every hand scraping operation, and even the tightening of each screw reflects professional manufacturing capability. A product quality management system and a problem responsibility system are in place, ensuring each machine meets leading market standards.

Specifications:

Category	Item	Specification
Worktable	Table Size	2200 mm x 1300 mm
Worktable	Maximum Table Load	3 Tons (3,000 kg)
Working Range	X-Axis Travel	2000 mm
	Y-Axis Travel	1600 mm
	Z-Axis Travel	700 mm
	Gantry Width	1650 mm
Spindle	Speed Range	8000 rpm
	Maximum Spindle Motor Power	15 kW
	Spindle Nose to Table Min./Max. Distance	65 - 765 mm
	Spindle Taper	BT40 / Cat 40 (with 150mm pull stud)
Servo System	3 Axis Motor Torque	35 / 18 / 18 Nm
Feed System	Rapid Traverse	X-Axis: 18 m/min
		Y-Axis: 18 m/min
		Z-Axis: 18 m/min
	Maximum Cutting Feed Rate	10000 mm/min
Accuracy	Positioning Accuracy	X-Axis: ±0.005/300mm
		Y-Axis: ±0.005/300mm
		Z-Axis: ±0.005/300mm
	Repeatability	X-Axis: ±0.005mm
		Y-Axis: ±0.005mm
		Z-Axis: ±0.005mm
Tooling	Max. Tool Diameter (Adjacent/No Adjacent Tool)	Ø150 mm / Ø250 mm
	Max. Tool Length	350 mm
	Max. Tool Weight	20 kg
	Tool-to-Tool Change Time	3.5 sec
Utilities	Air Pressure Requirement	5 - 7 kgf/cm² (approx. 0.49 - 0.69 MPa)
Overall Dimensions	Machine Dimensions (L x W x H)	5850 mm x 3570 mm x 3400 mm

Main Components List:

No.	Standard Configuration	Specification / Name	Origin / Brand
1	Control System	SYNTEC 22MA-4 (All-in-One)	Taiwan / SYNTEC
2	Mechanical Spindle	Belt-driven, BT40-Ø150	Taiwan / Okada
3	X-Axis Ball Screw	R50-12	Taiwan / HIWIN
4	Y-Axis Ball Screw	R50-12	Taiwan / HIWIN
5	Z-Axis Ball Screw	R50-12	Taiwan / HIWIN
6	X-Axis Linear Guideway	45mm Heavy-Duty Roller Guide, 8 Blocks	Taiwan / HIWIN
7	Y-Axis Linear Guideway	45mm Heavy-Duty Roller Guide, 4 Blocks	Taiwan / HIWIN
8	Z-Axis Linear Guideway	Turcite-B coated Heavy-Duty Hard Guideway	Machine Tool Matched
9	Three-Axis Screw Bearings	X: 4072; Y/Z: 3062	Japan / NSK or NACHI
10	Screw Pre-tension Nut	YSR	Taiwan / Yinsh
11	Z-Axis Balancing System	Balancing System	Wuxi / Huajin
12	Centralized Auto Lubrication System	Volumetric Type	Hegu
13	Pneumatic System	-	Taiwan / AirTAC
14	Lighting System	Work Lamp	Guangdong
15	Tool Clamping Cylinder	Boost Type	Taiwan / AirTAC
16	Electrical Cabinet Heat Exchanger	Circulation Type	Taiwan-funded
17	Inner Guard (Telescopic Cover)	Steel Helmet Telescopic Type	Zhongxin Heavy Industry
18	Full Enclosure	Full Enclosure (Factory Color)	Zhongxin Heavy Industry
19	Chip Removal System	Two-Screw One-Chain Conveyor	Zhongxin Heavy Industry
20	Oil Chiller*	-	Taiwan-funded (Optional)
21	Disc-Type Tool Magazine	24-Tool, Arm Type	Taiwan / Okada or Shoulun
Note: In case of component shortage, it will be replaced with a substitute of the same specification, same or higher grade, and equivalent brand. * denotes optional item.

Standard Machining Functions Introduction:

No.	Function (English)	Description
1	Number of Control Paths	1
2	Maximum Total Controlled Axes (Servo + Spindle)	6
	Maximum Controlled Servo Axes	5
	Maximum Controlled Spindles	1
3	Simultaneously Controlled Axes	4
4	Display Unit	10.4" Color LED
5	Servo HRV Control	High-speed, high-precision servo control
6	Program Capacity	512K (1280m)
7	I/O Link i	1024 / 1024
8	Automatic Data Backup	Backup of machine tool data
9	Memory Card Edit/Run	DNC / Online Machining
10	Program Folder Management	Functions for using macro programs and machining programs
11	FSSB High-Speed Rigid Tapping	Reduces rigid tapping time and error
12	Intelligent Backlash Compensation	Backlash compensation
13	PMC Axis Control	Used when tool magazine is a servo-driven type
14	Data Transmission via Embedded Ethernet	Data transmission function via Ethernet
15	USB to CF Card Program Transfer	Data transmission function
16	Servo Guide Mate	Servo optimization
17	Spindle Intelligent Load Meter	Monitors spindle current and other statuses
18	AI Contour Control	Optimal speed and acceleration control with look-ahead
19	Smooth Tolerance Control	Determines appropriate machining speed via commanded tolerance
20	Intelligent Overlap	Reduces part machining cycle time
21	Spindle HRV Control	High-speed, high-precision servo control
22	Inch/Metric Conversion	Conversion of machine tool units
23	HRV2 Control	High-speed, high-precision servo control
24	HRV3 Control	High-speed, high-precision servo control
25	SYNTEC 22MA-4 All-in-One	Servo tuning for high-speed, high-precision machining in a short time
26	Flexible Feed Gear	Arbitrary DMR
27	Least Command Increment (0.0001mm, 0.0001deg, 0.00001 inch)	Minimum system unit
28	Mirror Image	For each axis
29	Rigid Tapping Retract	Rigid tapping retract
30	Buffer Register	System data buffer
31	Positioning (Spindle Orientation)	Spindle positioning function for tapping, tool change
32	Linear Interpolation	Linear machining function
33	Circular Interpolation	Circular machining function
34	Helical Interpolation	Helical machining function
35	Thread Cutting, Synchronous Feed	Thread cutting, synchronous feed
36	Rotary Axis Rollover	Rotary axis rollover
37	Chamfering/Corner R at Any Angle	Chamfering/Corner R at any angle
38	Canned Cycles for Drilling	Canned cycles for drilling
39	Dogless Reference Point Setting	Dogless reference point setting
40	Automatic Corner Override	Automatic control of feed override at corners
41	Scaling	Scaling
42	Plane Selection	G17, G18, G19
43	Programmable Mirror Image	Programmable mirror image for each axis
44	Single Block	Program execution in single blocks
45	Program Restart	Restart after temporary program interruption
46	Tool Diameter / Nose Radius Compensation	Tool parameter compensation
47	Tool Life Management	Tool life management
48	Extended Tool Life Management	Extended tool life management
49	Backlash Compensation	Machine axis backlash compensation function
50	Position Tracking	Position tracking
51	Abnormal Load Detection	Abnormal load detection for each axis
52	Position Switch	Program protection function
53	Background Editing	Program editing possible in edit mode
54	Multi-language Display Function	10 system operation interface languages
55	Self-diagnostic Function	Monitors machine tool status
56	Help Function	View system alarms
57	Nano Interpolation	Nano interpolation
58	Work Coordinate System	G52 ~ G59
59	Absolute/Incremental Command	Can be mixed within the same block
60	Fault Diagnosis	Checks current machine tool fault conditions
61	Screen Clear	Manual or automatic screen clearing
62	Power Consumption Monitoring	Monitors machine tool power consumption

Machine Tool Working Environment Conditions:

Three-Phase AC Power Supply: 380V ±10% ~ 15%; 50Hz ±1Hz. Main power cable: 8mm² or larger. Grounding wire: 8mm² or larger.

Ambient Temperature: 8 ~ 40 °C.

Relative Humidity: ≤ 80%.

Keep away from strong light sources, vibration sources, and heat sources. Keep away from high-frequency generators, discharge equipment, welding machines, etc., to avoid electrical interference that may cause faults in the machine's NC system.

Recommended Oils and Greases Chart:

Lubrication Part	Quantity	Recommended Lubricant			Notes
Lubrication Part	Quantity	Ambient Temp. 10~40°C	Ambient Temp. 5~10°C
Ball Screws	Oil Lubrication	2-4 Liters	Way Oil #68	Way Oil #32	1. Check and refill daily before operation or when an alarm appears.
	Grease Lubrication	0.7-0.8 Liters	Lithium Grease #000		2. Change oil grade for low temperatures.
	Grease Lubrication	0.7-0.8 Liters	Lithium Grease #000		3. For grease cartridges, the brand must match the lubricator manufacturer.
Spindle & Screw Cooling Unit	Water Chiller	15-35 Liters	BASF G48 Antifreeze (No other medium allowed)	-	1. Check and refill antifreeze/oil daily before operation or when an alarm appears.
Spindle & Screw Cooling Unit	Oil Chiller	20-40 Liters	Great Wall No. 10 Spindle Oil	Great Wall No. 5 Spindle Oil	2. Change oil grade for low temperatures.
Hydraulic Station		25 Liters	Hydraulic Oil HM #32	Hydraulic Oil HM #20	1. Check daily before operation; change oil annually. 2. Change oil grade for low temperatures.
Booster Cylinder		0.1-0.2 Liters	Hydraulic Oil #32	Hydraulic Oil #20	1. Check daily before operation; refill when oil cup is only 1/3 full. 2. Change oil grade for low temperatures.
Cutting Fluid		100-350 Liters	Select appropriate cutting fluid based on workpiece material & machining conditions (quantity based on actual tank capacity).	-	Check for ice in the tank before startup when ambient temp. is below 5°C.
4th Axis		0.8~1 Liters	Gear Oil #150	Gear Oil #100	1. Check daily before operation; change oil every 6 months. 2. Change oil grade for low temperatures.
Tool Changer Arm System		7 Liters	Gear Oil #100	15W-40 Antifreeze Diesel Engine Oil	1. Check daily before operation; change oil every 2400 operating hours or 6 months. 2. Change oil grade for low temperatures.

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Gantry Type Machining Center