Precision CNC Machining Services for High-Quality Metal Fabrication

Product Description

Machine Picture

Machine Introduction

General Description

• The 5-Axis Gantry Milling Center with double pendulum head is the solution for large size parts with complex shapes and tight tolerances, offering the highest contour accuracy.
• This machine is a cross beam moving type (bridge type) five-axis simultaneous gantry machining center with fixed worktable, which is especially suitable for the machining of extra large and heavy workpieces.
• The movement of the crossbeam adopts the international advanced dual-drive synchronization technology, which realizes the center of gravity drive for the large span moving parts and makes the movement smooth and accurate positioning.

Highlights

Worktable

• Fixed worktable, after FEA precision structural analysis and optimization, theoretically it obtains unlimited load capacity, and the weight of processed parts has no impact on machining accuracy.
• Spiral chip removal slots are equipped on both sides of the bed, providing different chip removal speeds according to customer needs. The spiral can quickly remove chips.
• It is also treated twice by aging, which can eliminate the internal stress of the casting crystalline organization and make the accuracy stable after processing and have long-term accuracy retention.
  

Excellent gantry axis structure (X-axis)

• The guide rail seat is a box shaped structure with spacer bars. The guide rail seat castings are made of high-quality resin sand molding and cast;
• The X-axis adopts a 55 gauge heavy-duty roller type linear guide rail, with two on each side and a total of four.
• The transmission system adopts the most advanced international synchronous transmission structure, with a total of 4 servo motors+planetary gearbox+grinding gear combination transmission for 2 synchronous shafts with very high synchronization accuracy, providing sufficient rigidity and accurate accuracy.
  

Box-in-box beam

The beam adopts the box-in-box structure, and the guide structure formed by the four linear guides on T-shaped distribution, which can both meet the needs of fast and accurate movement, and can provide sufficient rigidity and greatly reduce the overturning due to the influence of inertia when changing direction quickly.

Crossbeam slide and ram spindle

• Four 55mm roller type linear guideways distributed in four directions, with excellent rigidity and stability.
• Double screw and double motor drive, which effectively improves the inertia and torque of Z-direction sliding table movement.
• The Z-axis rail adopts a four-way distribution to effectively improve the resistance to cutting torque.
• The Z-axis ram and crossbeam slide board are designed with a hugging structure, effectively improving the rigidity and stability of both sides. At the same time, the closed-loop chain size is made by special splicing technology and precision scraping, with high precision and good stability;
  

Spindle

The spindle adopts Italian origin HSD model, which A/C head model, electric spindle with high stability and rigidity.

Pneumatic & lubrication system

• SMC pneumatic components with reliable quality and easy installation and adjustment;
• Automatic timing circulation lithium grease lubrication device with central discharge lubricates with the correct amount of lubricant.

Hydraulic system

Compact structure, high efficiency, energy saving, low failure rate, and maintenance free hydraulic system for the safe and reliable operation of machine tools.

Spindle cooling system

Excellent cooling effect and accurate temperature control circulating cooling system for temperature control of the A/C axis and electric spindle.

Control System

New generation CNC system SINUMERIK ONE from Siemens, of which new hardware enhances the performance of NC and PLC, and combined with innovative features, improve the machining speed, precision, and surface quality of the machine tool.

Machine Applications

The machine tool can complete five-axis five axis simultaneous processing on the workpiece with just one time loading, which is suitable for processing large and medium-sized complex parts for aerospace, mold, automotive, railroad, marine and other industries with high processing efficiency, parts can be obtained high surface quality.

 

Machine Features

• Compact one-piece structure of the machine guide rail base and worktable brings large loading capacity and stable structure.
• High stability: box-in-box symmetrical crossbeam structure design for high speed and stability keeping.
• High acceleration: maximum acceleration 0.4G, rapid speed 40m/min, feeding speed 20m/min.
• Less footprint obtained, only 60% of the table moving type;
• Fixed worktable for big loading capacity, suitable for processing extra large workpiece;
• Long-term use of accuracy retention and better stability can be kept for all moving parts keep weight unchanged;
• Constant weight of moving parts ensures the machining contour accuracy and no machining overcutting;

Machine Specifications

Parameters	unit	BMI 5A3016	BMI 5A3020
Worktable area	mm	3200 × 1600	3200 × 2000
Max. loading on worktable	t	20	30
X/Y/Z travel	mm	3200 × 1600 × 800	3200 × 2000 × 1000
Guide way		X: 2 linear guide on each side, Y: 4 heavy-duty linear roller guide wayZ: linear roller guide way
Dist.from spindle nose to table surface	mm	280-1080 (customizable)	280-1280 (customizable)
Spindle		B head/standard,A,C head/optional
Tool magazine capacity		20
Max loading height	mm	1000 (customizable)	1200 (customizable)
Max loading width	mm	2000	two thousand and four hundred
Feeding speed	m/min	0-20
Rapidt speed	m/min	40
positioning accuracy	mm	0.01
Repeat positioning accuracy	mm	0.005
Weight of machine	t	40	42
Dimension (without electrical cabinet)	mm	7400 × 4300 × 5500	7400 x 4700 x 6200
Control system		5-axis simultaneous standard Siemens/ONE/Heidenhain

 

Machine Configuration

No.	Name	Origin	Manufacturer
1	Spindle assembly	Italy	HSD
2	Linear guide	Japan / Germany	THK/INA
3	Ball Screws	Japan / Germany	THK/I+F
4	Ball screw support bearings	Japan	NSK
5	Rack and pinion	Germany	Alpha/Atlanta
6	Planetary Reducer	Germany	Alpha/Stober
7	Numerical control system	Germany	SIEMENS
8	Programmable Designer	Germany	SIEMENS
9	Three-axis motor	Germany	SIEMENS
10	Main electrical components	Germany	SIEMENS
11	Lubrication system	Taiwan	Bijur
12	Pneumatic system	Japan	SMC
13	Drag chain	Germany	IGUS
14	Water cooler	China	Tongfei
15	Chip Conveyor	Shanghai	Fuyang
16	Optical scale	Spain	Fagor