China used gantry cnc milling machine boring machine
Product Description
Detailed descriptions of China used gantry cnc milling machine boring machine:
SKZX4020 is a gantry CNC machining center with fixed columns and and beams and moving table independently developed by our company. It adopts an internationally advanced machine tool structure, with the worktable moving back and forth (in the X-axis) on the bed base, the carriage sliding left and right (in the Y-axis) along the beam, and the milling head sliding up and down (in the Z-axis) along the carriage. Through finite element analysis using ANSYS, effective prediction and optimization of the static and dynamic performance of the machine tool have been conducted, ensuring the effective performance and providing a high cost-performance ratio.
This product has a wide range of applications and strong machining capabilities. The machine tool can perform processes such as boring, milling, drilling, and other procedures on various components, including box-type and shell-type parts, with complex hole patterns, contours, surfaces, and various flat surfaces. It features functions such as expansion, hinge, flat keyway milling, tapping, milling threads, linear and circular interpolation, and more. It is widely used in various mechanical processing fields such as steel structures, bridges, pressure vessels, chemical industry, environmental protection, engineering machinery, ships, aerospace, and war industries. The machining process is controlled by a numerical control system, making operation convenient and enabling automation, high precision, and batch production of diverse products.
The characteristics of this China used gantry cnc milling machine boring machine:
Feature 1: The main spindle box adopts a sliding sleeve structure, enabling high-power and heavy-duty cutting capabilities. The guide rail is a square quenching-plastic sliding guide pair, providing high rigidity, excellent vibration absorption, and stability. The Y-axis carriage has an extended coverage length over the sliding sleeve guide, ensuring smooth cutting when the sliding sleeve extends during processing. The sliding sleeve guide is precision ground using a German WALDRICH guide rail grinder, resulting in high accuracy and stability.
Feature 2: The equipment on-site employs the German SP high-precision laser geometric measurement instrument for real-time monitoring and guidance during installation. The equipment can detect the spatial geometric accuracy of ground horizontal level, straightness of guide rails, verticality, and other parameters. Particularly, it performs measurements of parallelism and contour consistency of the bed guide rails over large spans, ensuring parallelism on both sides of the bed guide rails. This ensures smoother and more precise movement of the machine tool on the guide rails, enhancing equipment accuracy and operational stability. Calibration is conducted using a dual-frequency laser interferometer to accurately compensate for pitch errors, reverse clearances, positioning accuracy, and repetitive positioning accuracy. This is crucial for ensuring the dynamic and static stability as well as machining precision of the machine.
Feature 3: The lubrication system is divided into two forms: grease lubrication and automatic thin oil lubrication. Grease lubrication is applied to the following components: the support bearings of each axis ball screw. Automatic thin oil lubrication is applied to the following components: each axis guide pair, ball screw pair. The automatic thin oil lubrication operates in a timed, quantified, and fully automatic manner, controlled by the numerical control system. It is capable of information collection and features alarms for oil circuit blockage, oil shortage, and automatic shutdown in case of oil shortage for pre-tensioning.
Main Component Structure and Performance:
The main functional components and key parts of the machine tool are of high quality, utilizing imported or well-known brand products. The foundational components are all cast using high-quality resin sand molding and high-strength cast iron material HT300, providing the machine tool with high rigidity and stable precision. The main castings undergo finite element analysis with specially arranged rib structures, fully meeting the requirements for high-torque cutting and high-speed drilling.
Its structure consists of the bed, worktable, column, gantry beam, carriage, sliding saddle-type milling power head, automatic lubrication system, chip removal system, cooling and protective devices, hydraulic system, electrical system, numerical control system, and other main components.
5.1.Bed-table
5.1.1.The bed and worktable are constructed using high-strength cast iron material HT300 and resin casting process. They undergo annealing for stress relief, rough machining, manual aging vibration to eliminate internal stress. Special rib plates are arranged to create a compact structure, enhancing the rigidity and strength of the bed.
5.1.2.The bed-to-worktable guide pair adopts heavy-duty rolling column linear guide pair, with minimal changes in dynamic and static frictional forces. This results in high sensitivity of the worktable, minimal high-speed vibrations, no crawling at low speeds, and high positioning accuracy, coupled with excellent servo drive performance. Simultaneously, it has a large load-bearing capacity, good cutting anti-vibration performance, which can enhance the characteristics of the machine tool, improve its accuracy and stability, and prolong the machine tool's service life.
5.1.3.The X-axis drive utilizes an AC servo motor, which, through a reduction mechanism, drives the ball screw pair to achieve X-axis feed.
5.2 Column-Gantry Beam:
5.2.1:The column and gantry beam are constructed using high-quality resin sand molding and high-strength cast iron material HT300. They undergo annealing for stress relief, rough machining, manual aging vibration to eliminate internal stress. The left and right columns are securely fixed on both sides of the bed, firmly installed on a pre-made foundation using anchor bolts. The gantry beam is fixedly installed on the left and right columns, forming a sturdy gantry frame structure with high rigidity for mechanical processing performance.
5.2.2:To meet the heavy-duty cutting requirements of the machine tool, the gantry beam adopts two-step distributed heavy-duty rolling guide rail structures. This design provides the Y-axis guide rail with sufficient bending stiffness and torsional stiffness, ensuring long-term precision retention. It features minimal high-speed vibrations, no crawling at low speeds, high sensitivity of the Y-axis carriage, high positioning accuracy, and excellent servo drive performance. Additionally, it has a large load-bearing capacity, good cutting anti-vibration performance, strong rigidity, and excellent stability.
5.2.3 The Y-axis utilizes an AC servo motor connected through a high-rigidity coupling to directly drive the high-precision ball screw and nut pair, enabling the lateral movement of the Y-axis carriage.
5.3:Y-axis carriage - Sliding Saddle-type Milling Power Head
5.3.1:The sliding saddle - Y-axis carriage is constructed using high-quality resin sand molding and high-strength cast iron material HT300. It undergoes annealing for stress relief, rough machining, manual aging vibration to eliminate internal stress, resulting in good rigidity, high precision, and excellent performance. The sliding saddle moves up and down along the carriage to constitute the Z-axis movement, with a travel distance of 1250mm. The Z-axis guide rail is a square quenching-plastic guide pair, providing high rigidity and excellent vibration absorption. The sliding saddle guide is precision ground using a German WALDRICH guide rail grinder, achieving high precision retention and cutting anti-vibration performance. The carriage has an extended coverage length over the sliding saddle guide, ensuring smooth cutting when the sliding saddle extends during processing.
5.3.2:The Z-axis AC servo motor is directly connected to the ball screw and nut pair through a high-rigidity coupling to achieve the up and down movement of the sliding saddle.
5.3.3:On the Y-axis carriage, there are two single-acting hydraulic balance cylinders forming a hydraulic balancing device. This device is utilized to balance the weight of the sliding saddle and the main gearbox, reducing the no-load torque of the ball screw, minimizing wear on the ball screw, and maintaining the accuracy and stability of the ball screw. Both the Z-axis ball screw and the main spindle are located at the center of the Y-axis carriage, preventing any offset that may lead to uneven force distribution and thermal deformation displacement.
5.3.4:The spindle of the sliding saddle-type milling power head is made of high-quality alloy steel, carburized and quenched. The spindle bearing assembly adopts bearings from the Japanese company NSK, lubricated with grease. The use of grouped bearings provides the spindle with high precision, high load capacity, and low temperature rise. This configuration allows the spindle to withstand high power and torque cutting while maintaining high spindle precision and longevity. The center of the spindle is located at the center of the Z-axis sliding saddle guide, ensuring optimal rigidity and stability.
5.3.5:The sliding saddle spindle gear transmission adopts an imported dual-speed gearbox to achieve a wide speed range and torque. The automatic shifting mechanism allows for high and low-speed gear shifting, with stepless speed adjustment within each speed range. The shifting mechanism is characterized by smooth transmission, low noise, resistance to impact loads, and very high transmission stiffness.
5.3.6:The tool clamping on the spindle is achieved by a disc-shaped spring on the spindle applying tension through a four-jaw clamping mechanism to the pull stud on the tool handle. Tool clamping is realized through the close coordination of the tool and the spindle taper hole.
5.4:Automatic Lubrication System
The machine tool is equipped with an automatic lubrication device that can automatically lubricate various components such as guide rails and ball screw assemblies. Lubricating oil is periodically pumped into the linear guide pair sliders, ball screw pair nuts, and various rolling bearings to ensure the most thorough and reliable lubrication. This eliminates the need for tedious manual operations and enhances the lifespan of various components. The lubrication pump station and components use high-quality products from well-known domestic manufacturers.
5.5:Chip Removal System
The iron chips in the machining area of the worktable can be conveyed to the iron chip lifting device in front of the bed by the spiral chip conveyor on both sides of the bed. Subsequently, they are transported to the cart by the front chain-type chip lifting device. The iron chip cleaning process is convenient and efficient.
5.6:Cooling and Protection Devices
5.6.1:The tool cooling system (equipped with external cooling) includes the cutting fluid device and cutting air blowing device, which can promptly remove the heat generated during the machining process.
5.6.2:Iron chip shields are installed around the machine tool to ensure the safe and thorough recovery of iron chips generated during the machining process. The X/Y guide rails of the machine tool are equipped with enclosed protective covers to prevent iron chips from entering the internal parts of the machine, protecting the guide rails and screws from corrosion. Clear warning signs are affixed to various moving parts of the machine tool.
5.7:Hydraulic System
The machine tool is equipped with an independent hydraulic system, used to maintain the dynamic balance of the spindle carriage and the tool clamping on the main spindle. The system is installed in an integrated manner, ensuring the reliability of the overall machine movement and facilitating maintenance.
5.8:Electrical System
The electrical system complies with ISO or national standards and is controlled by a numerical control system. It has an independent electrical cabinet with reliable sealing. The cabinet is equipped with industrial cooling air conditioning for dust removal and dehumidification, maintaining a constant temperature to ensure the safe operation of the machine tool. Imported brands are used for electrical components. The machine tool is equipped with lighting facilities for convenient observation and operation during night shifts. It is also equipped with a tricolor lamp to indicate program operation, completion of the work cycle, and fault alarms. The machine tool comes with an electronic pulse handwheel for versatile operation. The logical control of the machine tool is implemented using a built-in PLC control system, capable of fault detection, alarm, and alarm interface in English .
5.9:Numerical Control System and Operator Station
The machine tool is equipped with the Japanese FANUC 0i-MF numerical control system, with the CNC operator station installed on the gantry for convenient operation. It features a centralized control cabinet, a handheld pendant, an Ethernet interface, and an LCD display screen. The system includes data acquisition capabilities. The user-friendly interface incorporates human-machine dialogue, error compensation, automatic alarms, self-diagnosis of faults, and functions such as program preview for programming, storage, display, and communication convenience.
5.10:Tool changer
The machine tool is equipped with a set of rotary tool changers, with a tool capacity of 24 tools, designed for automatic tool changes in the milling power head. It enables quick tool changes, providing stability, smooth operation, and minimal noise during the tool change process.
5.11:90°Angular Milling Head
Below the main spindle, there is a set of fully automatic right-angle milling heads designed for side milling, boring, drilling, and other machining operations.
Fully Automatic Right-Angle Milling Head
| Installation Method |
Automatic |
| C-axis Angular Increment (Automatic) |
5° per division |
| Tool Clamping |
Automatic |
| Taper Hole |
BT50 |
| Maximum Torque |
1000Nm |
| Cooling Method |
External Cooling |
The working environment:
Factory height: ≥8.5 meters
Factory humidity: Relative humidity ≤95%
Ambient temperature: -5 to 45°C
Power supply:
Power supply (three-phase): AC 380V±10%
Power frequency: 50Hz±1 Hz
Total electrical capacity ≥ 60 KVA
Compressed air: 0.6 MPa
Product Parameters
Main technical parameters of this China used gantry cnc milling machine boring machine :
| |
Item |
Parameters(mm) |
Remarks |
| Machining Range |
X-axis Travel (Table Movement) |
4000mm |
|
| Y-axis Travel (Carriage Movement) |
2000mm |
|
| Z-axis Travel (Ram Movement) |
1250mm |
|
| Distance from Spindle End to Worktable Surface |
150-1400mm |
|
| Worktable |
Worktable Dimensions |
4000×2000 mm |
|
| T-slot Width |
22 mm |
|
| Number of T-slots |
11 |
|
| Worktable Load Capacity |
10t |
|
| Guideways |
X axis |
65# |
|
| Y axis |
65# |
|
| Z axis |
rectangular slide block |
|
| Screws |
X axis |
Φ63 |
|
| Y axis |
Φ63 |
|
| Z axis |
Φ50 |
|
| Spindle |
Main Motor Power |
30KW |
|
| Spindle Output Torque (Continuous) |
1050Nm |
|
| Spindle Taper Hole Taper |
BT50 |
|
| Pull Stud Specification |
MAS P50T-I(45°) |
|
| Spindle Speed |
10-3000rpm |
|
| Feed System |
Table Movement Speed (X) |
1~8000mm/min |
|
| Carriage Transverse Movement Speed(Y) |
1~8000mm/min |
|
| Ram Vertical Movement Speed(Z) |
1~4000mm/min |
|
| Minimum Feed Amount |
0.001mm |
|
| Accuracy |
Positioning Accuracy(X,Y,Z) |
0.02/0.02/0.02mm |
|
| Repeat Positioning Accuracy(X,Y,Z) |
0.016/0.013/0.012mm |
| |
Cooling Method |
External Cooling |
|
| |
Control System |
FANUC 0i-MF |
|
| |
Machine Weight |
Around 35T |
|
| Parameter |
Unit |
Model 1 |
Model 2 |
Workpiece |
Maximum drilling center distance (width * length ) |
mm |
10000*20000 |
12000*12000 |
| Maximum processing workpiece thickness |
mm |
300 |
300 |
Drilling power head |
Quantity |
|
4 |
4 |
| Spindle taper hole |
|
BT50 |
BT50 |
| Maximum drilling diameter |
mm |
φ60 |
φ140 |
φ60 |
φ140 |
| Spindle motor power |
kw |
4*22 |
4*37 |
4*22 |
4*37 |
| Spindle speed |
r/min |
30-3000 |
30-3000 |
Gantry longitudinal movement (X-axis) |
Maximum stroke |
mm |
20000 |
12000 |
| X-axis moving speed |
m/min |
0-8000 |
0-8000 |
Power head lateral movement (Y-axis) |
Maximum stroke |
mm |
10000 |
12000 |
| Y-axis moving speed |
m/min |
0-8000 |
0-8000 |
Vertical ram feed motion (Z axis) |
Z-axis maximum stroke |
mm |
500 |
500 |
| Z-axis moving speed |
m/min |
0-4000 |
0-4000 |
Positioning accuracy |
X, Y axis |
mm |
0.08mm/full stroke (Add grating ruler 0.04/full stroke) |
0.08mm/full stroke (Add grating ruler 0.04/full stroke) |
Repeatability |
X, Y axis |
mm |
0.04mm/full stroke (Add grating ruler 0.02/full stroke) |
0.04mm/full stroke (Add grating ruler 0.02/full stroke) |
Chip removal and cooling |
Chip conveyor type |
|
Chain type |
Chain type |
| Number of chip conveyors |
|
2 |
2 |
| Chip conveyor motor power |
kw |
2*1.5 |
2*1.5 |
| Cooling pump motor power |
kw |
4*4 |
4*4 |
Packaging & Shipping
China used gantry cnc milling machine boring machine packing and loading :
After Sales Service
After service :
The warranty period is 12 months, calculated from the date of successful installation and trial operation.
The equipment provided by the seller is new and unused. The performance of the equipment, after installation, debugging, and operation complies with the relevant national standards or stipulated in the agreement between the parties.
The seller shall provide relevant technical support within 2 hours upon receiving a phone call from the buyer. In the event that the buyer is unable to resolve the issue independently, the seller will conduct troubleshooting at the within 24 hours in sellers' country . Parts identified as quality-related issues during the warranty period will be replaced free of charge.
We have professional technician team and we could offer installation and training in customers' factory , just charge for reasonable labor fee .
Our customers :
Goods sell at home and abroad :
Our honor :
Company Profile
Nanjing Yunyan Digital Technology Co. Ltd is the exporting department of Jiangsu Yizhong CNC Machine Tool (Group) Co., Ltd .
Our group is one of the Top machine tool factories in China, which set up in 2006, located in Chengbei industrial area, Yangzhou city, Jiangsu province. It covers an area of 498700 square meters and nine production lines. We're also the National Torch Plan and High-tech enterprise.
Our main products includes CNC machine center ,CNC gantry drilling machine ,CNC gantry drilling and milling machine ,CNC boring and milling machine center ,Plate Planer and milling machine ,oil press machine,CNC lathe and leveling machine. Meanwhile , with a powerful technician team, OEM machine is our strong suit .
With many years' hard-working, we have built long term and close cooperation relationships with many friends, such as Russia, Australia, United Kingdom, Italy, South Americas, Egypt, India and so on,welcome your consulting .
FAQ
What equipment can you get from our factory ?
Lathe machine
CNC Vertical machine center
Leveling machine
Plate edge milling machine
Boring milling machine
Edge planer
Gantry drilling and milling machine
Oil pressure
Rolling machine
We support customized machines , welcome your asking .
Why choose Jiangsu Yizhong Machine Tool Co.,Ltd?
Quality guarantee :
We have our own factory 498700m2 and we have mature manufacturing experiences since 2006 .
Before machine sending , we will be debugging a long time and confirm it could run well .
We have a rigorous QA and QC procedures and confirm each process following the orders' standard strictly . welcome our customer-self coming to check the machine tools quality .
Delivery time :
Usually our delivery time from 10 working days to 6 months . according to the machines you want to buy .some machines have machine bed in stock .
When we quote you , we will write the machine tool delivery time , and we will abide it carefully .
Advanced technician team :
We recognize that technical innovation is very important for a manufacturer , so our factory set up the Jiangsu Yizhong Industrial design and reach institute years ago ,which makes our factory powerful in customized machines .
If some technical questions our sales person can not answer , they will ask them and they can give a quick response .
By the way , our engineers are available to customers' local factories to assist them to do installation , operation guide and machine tool upkeep .
Sales team :
Our salesmen all are trained before they serve to our customers in factory , so most questions about the machine tools , they can give fast response ,which will save our customers' time .
Our salesmen all love their jobs , so they have passions when working . if you have any technical questions could ask them better before 12pm ,China time .
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