CNC Gantry Drilling Boring Milling Machining Center

• After-sales Service: Product Package After-Sales Service
• Warranty: The Warranty Period Is 12 Months or 18 Months Upon
• Type: Planer type Milling Machine
• Object: Box Type, Shell Type, Bearing Type and Other Parts
• Structure: Bed type
• Milling Cutter Type: Cylindrical Milling Cutter
• Model NO.: SKZX5050
• Milling Cutter Structure: Overall Welding Tooth
• Controlling Mode: CNC
• Automatic Grade: Automatic
• Precision: High Precision
• Certification: ISO 9001, SGS
• Condition: New
• Drive Mode: Two-Speed Gearbox + Timing Belt
• Spindle Speed: 10~3000rpm
• Main Motor Power (S1/S6).: 22/26kw
• Spindle Torque: 770/945nm
• Transport Package: Strong Packaging to Prevent Rain, Snow, Moisture,
• Specification: Table area5000× 5000mm
• Trademark: JSYZSK1
• Origin: China
• HS Code: 8459619000
• Production Capacity: 2000 Sets Per Year

Product Description

SKZX5050 CNC Gantry Drilling and Milling Machining Center is a large-scale workbench with movable column and fixed beam high-speed drilling and milling gantry machining center independently developed by our company for wind power generation, slewing bearing, chemical equipment and other industries. It shows high-speed drilling, high-speed cutting, with internal and external cooling functions.

    This product has a wide range of applications and strong processing capacity. Mainly used for all kinds of extra-large bearing rings, inner and outer ring hole and rough finishing, machine tools can realize the box, shell, bearing and other parts of the bore and hole system, it is distinguished by contour complex shape, various types of plane for boring, milling, drilling and other processes, which makes it suitable foe different functions like expansion, hinge, countersinking plane, tapping, milling thread and straight, arc interpolation.,etc.

    The machining center adopts the international advanced machine tool structure and technology, high precision of executive components, good reliability, and excellent dynamic quality, it applies finite element analysis, and effectively predicts and optimizes the static and dynamic performance of the machine tool, so that the performance of the machine tool is effectively guaranteed, it is also prepared with high performance-price ratio, CNC system, hydraulic system, feed system, speed regulation system.,etc. 


1. the basic performance and characteristics of the machine tool
Feature 1: The spindle box adopts a sliding ram structure, which can realize high-power heavy-duty cutting and high-speed drilling functions, and  the guide rail is a square quenching-pasted sliding guide pair, with high rigidity, good vibration absorption and high stability.  The Y-axis slide seat has a long length of inclusion for the ram guide, which keeps the square ram cutting smoothly when extended machining. The ram guide rail is ground by German WALDRICH guide rail grinding machine, with high precision and good stability.
Feature 2: Self-developed programming software, CAD/CAM graphics can be automatically converted into processing program functions when drilling, eliminating the cumbersome steps of manual programming.
Feature 3: This machine tool has drilling real-time torque detection function, that can set and protect the tool torque when the tool wear cutting torque is greater than the set torque value for tool lifting shutdown protection, which ensure that the tool will not be damaged, and also reduce the cost of tool use.
Feature 4: This equipment adopts German SP laser geometric measuring instrument from the guide rail installation, detects the straightness and levelness of the guide rail, so that the machine tool slides on the guide rail more smoothly and accurately, and uses laser interferometer correction to accurately detect and compensate for pitch error, backlash, positioning accuracy and repeated positioning accuracy also can ensure the dynamic, static stability and processing accuracy of the machine.
Feature 5: The use of Taiwan Jianchun center effluent spindle, front four rear two group bearings, so that the spindle has high precision, high load and low temperature rise, with German SIEMENS high-power servo spindle motor, through Taiwan GTP two-speed gearbox automatic shift transmission Passed to the power head spindle, it has low speed and high torque and a wide constant power range. It can be drilled at high speed and milled at low speed and heavy load. The gearbox and spindle have a constant temperature cooling circuit system to ensure the stability of the ram temperature, reduce the thermal deformation of the spindle and improve the machining accuracy of the machine tool.
Feature 6: The lubrication system is divided into two forms: grease lubrication and automatic thin oil lubrication. Grease lubrication parts: X,  Y, Z axis ball screw support bearing; Automatic thin oil lubrication parts: each axis guide rail pair, ball screw pair; Automatic thin oil lubrication is a timed, quantitative automatic mode, automatically controlled by the numerical control system, and can collect information, with oil circuit blockage alarm, oil shortage alarm and oil shortage preload shutdown function.
2. the structure and performance of the main components of the machine tool
The main functional parts and key parts of the machine tool have high quality, and imported or famous brand supporting products are adopted. The basic large parts are cast by high-quality resin sand molding and high-strength cast iron materials, so that the machine tool has high rigidity and stable accuracy. The main castings are all finite element analysis and special rib arrangement, which fully meets the needs of high-torque cutting and high-speed drilling of machine tools.
The machine tool is fixed for gantry frame and table moving structure. The workbench does front and back (X) movement on the bed, the slide seat does left and right (Y) movement along the beam, and the ram does up and down (Z) movement along the slide. Its structure is mainly composed of bed, workbench, column, beam, slide, ram power head, lubrication system, chip removal system, cooling and safety Protective device, hydraulic balance system, electrical system, CNC system and other main components.
2.1: Bed, workbench (X-axis).
2.1.1: The bed and workbench are made of high-quality resin sand molding, high-strength cast iron materials, annealed stress relief treatment, rough processing,
artificial aging vibration, eliminate internal stress, and have high mechanical stability and thermal stability. The components are arranged with special rib plates densely shaped honeycomb well-shaped rib plates, which have compact structure and high stiffness and strength.

2.1.2: The bed and workbench guide pair adopts imported heavy-duty roller linear guide pair, which has small dynamic and static friction changes, high sensitivity of the workbench, small high-speed vibration, no crawling at low speed, high positioning accuracy and excellent servo drive performance; At the same time, the bearing capacity is large, the cutting vibration resistance is good, which can improve the characteristics of the machine tool, improve the accuracy and precision stability of the machine tool, and extend the service life of the machine tool.
2.1.3: The X-axis drive adopts AC servo motor to drive the ball screw auxiliary drive through deceleration to achieve X-direction feed. The screw is pre-stretched during installation, eliminating clearances and achieving high transmission accuracy.
       
Heavy-duty roller linear guide                  Precision large lead ball screw
2.2: Columns, beams (Y-axis).
2.2.1: The column and beam are made of high-quality resin sand molding, high-strength cast iron material, annealed to stress relief, rough processing, artificial aging vibration to eliminate internal stress.
The left and right columns are fixed and installed on both sides of the bed, and the anchor bolts are firmly installed on the prefabricated foundation, and the gantry beams are fixed and installed on the left and right columns to form a solid gantry frame structure with high rigidity machining performance.

In order to meet the heavy-duty cutting of the machine tool, the cross-section is large, and two stepped distribution imported heavy-duty roller guide rail structures are adopted, with large span distance, which will make the Y-axis guide rail have sufficient bending rigidity and torsional rigidity, and make the Y-axis guide rail have a long enough precision retention. It has the characteristics of small high-speed vibration, no crawling at low speed, high sensitivity of Y-axis slide, high positioning accuracy, excellent servo drive performance, short distance from spindle center to Z-axis guide surface, small flipping torque, and good structural rigidity. At the same time, the bearing capacity is large, and the cutting vibration resistance is good.
2.2.2: The Y-axis drive adopts AC servo motor to drive the high-precision ball screw nut sub-drive through deceleration to realize the lateral Y-axis movement of the slide. The screw is pre-stretched during installation, eliminating clearances and achieving high transmission accuracy.
2.3: Slide seat, ram power head (Z axis).
2.3.1: The slide seat and ram are made of high-quality resin sand molding, high-strength cast iron material, and are annealed to relieve stress, rough processing, artificial aging vibration to eliminate internal stress. Good rigidity, high precision, excellent performance. The ram moves up and down along the slide to form a Z-axis movement with a stroke of 1000mm. The Z-axis guide rail is a square quenching-pasting guide rail pair, with high rigidity and good vibration absorption, and the ram guide rail is ground by the German WALDRICH guide rail grinder, so that it can achieve high precision retention and cutting vibration resistance. The slide seat has a long length of cover for the ram guide, which keeps the square ram cutting smoothly when extended machining.
2.3.2: The Z-axis AC servo motor is directly connected to the ball screw pair through a high-rigidity coupling to realize the up and down movement of the ram, which can withstand heavy cutting loads. The screw is pre-stretched during installation, eliminating clearances and achieving high transmission accuracy.
2.3.3: The slide seat is equipped with two single-acting hydraulic balancing cylinders of hydraulic balancing device, which is used to balance the weight of the ram and the main gearbox, so that the ram has good dynamic response performance and start-stop reaction block; At the same time, the no-load torque of the ball screw
is reduced, the wear of the ball screw is reduced, and the accuracy and stability of the ball screw are maintained. The Z-axis ball screw and spindle are located in the center of the slide, which will not cause uneven force and thermal deformation and displacement caused by offset.
2.3.4: The ram type drilling and milling power head spindle adopts Taiwan Jianchun brand effluent spindle, the spindle is made of high-quality alloy steel, carburized and quenched, and the spindle bearing adopts the bearing of Japan's NSK company, grease lubrication. The use of front four rear two sets of bearings, so that the spindle has high precision, high load and low temperature rise, not only can withstand large power and high torque cutting, but also has high spindle accuracy and life. The center of the spindle is located in the center of the Z-axis ram guide for optimal rigidity and stability.
2.3.5: The ram and the gearbox adopt a separate structure, so that the heat generated in the gearbox cannot be transmitted to the ram. The ram spindle gear transmission adopts TaiwanGTPTwo-speed gearbox to achieve a large shifting range and torque, through automatic gear shifting to achieve high and low gear shifting, infinitely adjustable speed in each gear. The shift mechanism has the ability to transmit smoothly, with low noise, resistance to shock loads and very hightransmission rigidity.
2.3.6: The spindle grabber is based on the disc spring on the spindle to act on the nails of the shank through the four-lobe claw broaching mechanism with tensile force, and the gripper is realized by the close fit between the tool and the spindle taper hole. With spindle orientation function.
2.4: Hydraulic balancing system
The machine tool is equipped with a hydraulic balance system to maintain the dynamic balance of the ram power head and the automatic loosening of the spindle clamping knife, which adopts integrated installation to ensure the reliability of the whole machine movement and convenient maintenance.
2.5: Lubrication system
This machine tool is equipped with an automatic lubrication device, which can automatically lubricate the motion pairs such as guide rails and lead screws. Regularly pump the lubricating oil into the lubrication points such as the linear guide rail sub-slider, ball screw sub-wire mother and each rolling bearing of each component to lubricate it most fully and reliably, eliminating cumbersome manual operation and improving the service life of various parts. It can adjust the oil supply cycle and oil supply volume of each lubrication point, and realize fully automatic centralized lubrication through electrical system control.
2.6: Machine tool safety guards
The X axis and Y axis of the machine tool are equipped with stainless steel telescopic protective covers, which can effectively prevent the erosion of guide rails and lead screws by the splash of iron filings and coolant, and improve the service life. The whole machine adopts a semi-closed protective cover, and the operating surface has a transparent viewing window. The main motor and feed motor should be equipped with overload and overheating electrical protection functions, and the main mobile pipeline guide rails all adopt protective devices for safety protection; The beam is equipped with a safety fence equipped with a safety rope; Each moving part of the machine tool is affixed with obvious warning signs.
2.7: Cooling system
The tool cooling system has a high-pressure internal cooling pump and a low-pressure external cooling pump respectively for the internal and external cooling of the tool. With the characteristics of large outlet pressure, large flow rate and good reliability, coolant according to the user's workpiece according to the situation, it is recommended to use anti-rust function emulsion, light mineralized oil and other non-corrosive liquids. The spindle end is equipped with a cutting blowing device.
2.8: Chip evacuation system
    The iron filings in the processing area of the table can be transported to the iron chip lifting device in front of the bed by the screw chip conveyors on both sides of the bed, and then transported to the waste trolley by the chain chip lifting device on the front side. Iron filings are easy and quick to clean. There is a grille pedal on the twister.
2.9: Electrical Systems
The electrical system conforms to ISO national standards, CNC system control, independent electrical cabinet, reliable sealing of electric cabinet, the use of high-power industrial cooling air conditioning to prevent dust and dehumidification, maintain the constant temperature of the electric cabinet, and ensure the safe operation of the machine tool; Electrical components are imported brands; The working area of the machine tool is equipped with lighting facilities, which is convenient for the operator to observe and operate at night; The machine tool is equipped with three-color lamp, which prompts three kinds of information: program operation, work cycle completion and fault alarm. The machine tool is equipped with a wireless electronic pulse handwheel, which is convenient for all-round operation; The logic control of the machine tool adopts the built-in PLC control of the system, which can detect and alarm faults, and the alarm interface is fully Chinese.
2.10 CNC systems and operating stations
The machine tool is equipped with German Siemens SINUMERIK 828D CNC system, and the CNC console is installed on the gantry, which is easy to operate. Centralized operation control box and handheld unit with Ethernet interface and LCD screen. With data acquisition function. In order to facilitate programming, storage, display and communication, the operation interface has functions such as man-machine dialogue, error compensation, automatic alarm, fault self-diagnosis and processing program rehearsal.
Support network communication and data interaction. The adopted control system supports industrial Ethernet communication protocol, supports standard network communication protocol OPC-UA, etc. There is an interface for automated production lines and MES communication.
The machine has a chip breaking function, which can set the chip breaking time and chip breaking cycle on the man-machine interface. After setting the position, when the drill bit fast forward contact the workpiece, it will automatically switch to the working feed, and when the drill bit drills through the workpiece, it can automatically switch to fast rewind to realize the automatic feed cycle, and the working feed speed is set by numerical control. The machine tool has electronic handwheel operation function, and also has automatic chip breaking, chip removal, suspension, drill break protection functions, etc.
2.11 Inspection Systems
The X, Y, Z axis servo feedback system adopts the full closed-loop control of the grating ruler to improve the machining accuracy of the machine tool, ensure the high-precision and stable operation of the machine tool, and have long-term accuracy retention.
3. The main technical parameters

	project	Parameter (mm).	Notes
Processing range	Maximum machining part size (L× W×H)	5000×5000×1000 mm
	Table longitudinal stroke (X).	5000 mm
	Lateral movement stroke of the ram (Y).	5000 mm
	Vertical movement stroke of the ram (Z).	1000 mm
	Distance from spindle end to table	250~1250mm
workbench	Worktop size	5000×5000 mm
	The workbench bears load	36t
	T-slot width	28 mm
	Number of T-slots	24
	Gantry span	5350 mm
spindle	Number of spindles	1
	Drive mode	Two-speed gearbox + timing belt
	Spindle speed	10~3000rpm
	Main motor power (S1/S6).	22/26KW
	Spindle torque	770/945Nm
	Spindle end taper	ISO50
	Pull nail specifications	MAS P50T-I(45°)
Feed system	Table movement speed (X).	1~6000mm/min
	Lateral movement speed of the ram (Y).	1~6000mm/min
	Vertical movement speed of the ram (Z).	1~10000mm/min
	X, Y, Z feed speed	1~6000mm/min
	Minimum feed	0.001mm
	Table mobile servo motor (X).	4.3KW
	The ram moves the servo motor (Z) vertically	5.2KW
	The ram moves the servo motor (Y) laterally	4.3KW
precision	Positioning accuracy	X,Y0.03mm	Fully closed loop
		Z0.015mm
	Repeatable positioning accuracy	X,Y0.02mm
		Z0.01mm
Machine dimensions (L× W×H)		13000×8600×5750 mm
Machine weight		100T
Electrical capacity		Approx. 60KVA
CNC system		SIEMENS 828D

4. Configuration of main purchased parts

	Name	Brand	Notes
1	Rolling linear guides	Japan THK/Taiwan HIWIN
2	Ball screws	Japan THK/Taiwan HIWIN/TBI
3	CNC system	Siemens, Germany
4	Servo feed motors and drives	Siemens, Germany
5	Spindle servo motor	Siemens, Germany
6	Precision spindle	Taiwan Yu Tsubaki
7	Automatic lubrication system	Bechil / River Valley / Flow
8	Spindle gearbox	Taiwan GTP
9	Lead screw bearings	NSK
10	Grating ruler	Heidenhain/Fagor
11	Pneumatic components	Japan SMC/Taiwan AirTAC
12	Industrial air conditioning	Lehman/Tongfei/Rico
13	buttons, indicators, etc Main electrical components	Schneider, France

Note: If the supplier of the purchased parts fails to deliver in time within the delivery period, the purchased parts can be replaced by the same brand!
5. List of major random annexes

	Name	Model or codename	Quantity	Notes
1	Machine mattress iron		1 set
2	Anchor bolts		1 set
3	Common repair tools		1 set

6. List of spare parts

	Name	Model or codename	Quantity	Notes
1	Sealing rings	B80×105	2 pcs
2	Sealing rings	B63×85	2 pcs
3	○ Ring	16×2.4	10 pcs
4	Combined gasket	22	10 pcs
5	AC contactor	LC1-D09M7C	2 pcs	Schneider
6	Light	XB2BVB4LC	2 pcs	Schneider

7. Machine tool working environment
1) Height:                ≥8.5M
2) Plant humidity:  relative humidity≤ 85%.
3) Ambient temperature:                -5~45°C
4) Power supply: power supply (three-phase): AC 380V±10%.
                             Power frequency:    50Hz±1 Hz
                             Total electrical capacity ≥ 100 KVA
5)Compressed air:                0.6Mpa
8. Geometric accuracy of machine tools

NO	Test the project	Diagram	Allowable error	remark
1	The perpendicularity between Z-axis motion and Y-axis motion		0.020/500mm
2	The perpendicularity between Z-axis motion and X-axis motion		0.020/500mm
3	The perpendicularity between X-axis motion and Y-axis motion		0.020/500mm
4	Radial runout of spindle shaft bore: a)Close to the spindle end. b) 300mm from the end of the spindle.		a)0.008mm b)0.015mm
5	Parallelism between the motion of the spindle axis and the Z axis:   a)In the XZ vertical plane parallel to the X-axis. b)In the ZY perpendicular plane parallel to the Y axis		a) 300mm on  0.015 measurement length b) 300mm on 0.015 measurement length
6	The perpendicularity between the motion of the spindle axis and the Y-axis		0.02/500mm
7	The perpendicularity between the motion of the spindle axis and the X-axis		0.02/500mm
8	Perpendicularity between table surface and Z-axis motion a)In the ZY perpendicular plane parallel to the Y axis. b)In the XZ vertical plane parallel to the X-axis.		a)0.020/500mm b)0.020/500mm

9. Extra documents
1. 1 copy of product inspection certificate
2. Chinese 1 copy of instruction manual (mechanical, hydraulic, electrical).
3. 1 copy of the basic diagram
4. CNC system programming manual l copy
5. 1 copy of CNC system installation manual
6. CNC system operation manual l copy
7. 1  copy of CNC system error troubleshooting manual
8. AC servo motor drive instruction manual 1 copy
9. Packing list 1 copy
10. Machine tool design, manufacturing and installation standards
1) GB 15760-2004 "General Technical Conditions for Safety Protection of Metal Cutting Machine Tools"
2) GB 5226.1-2008 "Mechanical and electrical safety: Mechanical and electrical equipment Part 1: General technical conditions"
3) GB/T16769-2008 "Measurement method of noise and sound pressure level of metal cutting machine tools"
4) GB/T 25376-2010 "General technical conditions for machining parts of metal cutting machine tools"
5) GB/T 23570-2009 "General technical conditions for welding parts of metal cutting machine tools"
6) GB/T 25373-2010 "General Technical Conditions for Assembly of Metal Cutting Machine Tools"
7) ISO 86362-2007 "Gantry milling inspection conditions - Accuracy inspection"