Chinese Direct Manufacturer CNC Drilling Machine SK703-4050 Edm Small Hole Drilling Machines
Main Characteristics:
This machine is a high-speed EDM equipment with small holes. The copper tube is used as the electrode and guided by the guide. A high-efficiency pulse power supply is applied between the electrode and the workpiece. In the process, the Spindle-driven electrode is servo-fed under the control of the servo system, and pulse high-frequency discharge is generated between the electrode and the workpiece, which can control the erosion of the workpiece. In the process, the high-pressure water quality working fluid is ejected from the inner hole of the electrode, and the chips are forced to be discharged and cooled in the processing area to ensure the smooth processing. Machining aperture range is generally in the range of 0.2-4. The depth-diameter ratio of the aperture is about 1 mm can reach 300:1, and the processing speed is generally 1-40/min. It can penetrate directly from the inclined surface and surface without the limitation of hardness and toughness of the material. CNC EDP is a set of advanced functions such as Z-axis deep precise processing, X-axis and Y-axis servo detection, and it is easy to use and operate. Single, stable, reliable, wide range of applications and other characteristics of products. It can be used for deep and precise small holes which are difficult to be machined by many traditional processing methods, such as cutting perforation, blowhole, group holes and nozzle holes of various metals and super-hard conductors.
The key parts of the machine bed, pillar, spindle box and so on are all made of Mihanna (dense drying) castings. The structure is stable and the quality is maintained permanently. The castings are computerized and analyzed by finite element analysis method. Reasonable structural strength and reinforcement are provided to provide high rigidity of machinery. Casting material number is FC-300. Casting structure adopts one-piece forming technology, box structure and large pentahedron processing machine, which is completed by one clamping process. The machine tool has high rigidity, high strength and excellent geometric shape and position accuracy. It can also ensure the long-term stability and high accuracy of machine tools.
Note: Casting process control of dense-drying castings and its application
Casting process control of dense-baked metal castings: dense-baked metal castings undergo a series of strict casting process control, such as control of graphite carbon and bound carbon content in iron; control of metallurgical quality of molten iron, i.e. cleanliness and supercooling; control of wedge value after inoculation; control of 5 elements, alloying elements and nitrogen content, etc., after casting, the expected iron base and graphite distribution can easily be obtained. Improve mechanical properties.
In addition, in order to prevent deformation after processing, the castings are annealed thoroughly, which is conducive to the elimination of internal stress.
1.With rail support, it can support heavy load, move quickly and ensure accurate positioning.
With wide and solid marble base, full support design under heavy load and solid structure, the heavy load capacity during processing can be ensured.
The main shaft head is reinforced with ribs and bones. The contact length ratio between the main shaft head and the column is appropriate to provide the stable support of the main shaft.
Three-axis motor and precision high-speed ball screw drive and pull directly to enhance rigidity and precision.
The X/Y axis is supported by Z-axis rigid rail of linear sliding track, which can make rapid displacement and obtain the best circular precision. Ensure accurate positioning.
The electric box adopts side-hanging design, which saves space and makes limited space available for maximum use.
In order to ensure the quality of the whole machine, the main outsourced parts are made by world famous brand manufacturers.
KT510-M System
Spindle Bearing: Japan NSK
Ball screw: Taiwan Yintai
| |
SK703-3040 |
SK703-4050 |
SK703-5063 |
SK703-6080 |
| worktable travel(mm) |
300*400 |
400*500 |
500*630 |
600*800 |
| Spindle head stroke(mm) |
300 |
300 |
400 |
500 |
| servo travel(mm) |
400 |
400 |
400 |
500 |
| Electrode diameter(mm) |
0.2-4 |
0.2-4 |
0.2-4 |
0.2-4 |
| Max.Machining Speed(mm/min) |
40-60 |
| Max.aspect ratio |
300-1 |
| Working fluid |
running water |
| Working pressure(mpa) |
7 |
| Max.Processing Current(A) |
303 |
| Max. power consumption(KVA) |
3 |
| control mode |
Basic three-axis CNC, multi-axis CNC can be customized according to customers, up to 7 axes |
Spindle motor, servo motor: Mai Xun
Pneumatic components: Taiwan
Note: The above matching manufacturers are our designated suppliers. In case of special circumstances, they will replace the products at the same level, but the quality standards are not lower than those of the above suppliers.
Main technical specifications
1.Processing range
2.Axial Servo Drive System
3,lubrication system
Lubrication Form: Auto.
Lubrication position: three-axis ball screw, three-axis Guide
Lubricant capacity: 4L
Lubrication time: self-determined
4,Machine weight
5,Power capacity required for machine : 3KVA
* Our company reserves the right to change the above specifications at any time due to technical requirements.
Mechanical specification parameter table
General layout and composition of machine
It is composed of main engine, electric control cabinet and working fluid system.
The main machine is composed of bed worktable, pillar, spindle head and other components.
3,The electric control cabinet is composed of an electric box, an industrial computer system, a detection control unit and a pulse power supply unit.
4,The working fluid system consists of a tank, a pump, a filtering system and a pipeline.
Main technical parameters (see table)
Equipment Indicators
1,Machine Tool Accuracy
LK-SK703100 Accuracy Index of CNC EDM Small Hole Machining Machine Tool
| Inspection items |
Tolerance |
| 1,Flatness of table surface |
0.03 |
| 2,Straightness of Worktable Moving in Vertical Plane |
X axis:0.020 Yaxis:0.028 |
| 3,Straightness of Worktable Moving in Horizontal Level |
Xaxis:0.028 Yaxis:0.025 |
| 4,Parallelism of Worktable Movement to it |
Xaxis:0.045 Yaxis:0.04 |
| 5,Verticality of Worktableh Y-direction Moving to X-direction |
0.03/300 |
| 6,Verticality of Upper and Lower Motion on Z Axis to Workingtabel |
0.040/400 |
| 7,Parallelism of the guide mounting hole to the up and down motion of W axis |
X,Y 0.02/100 |
| 8.Positioning Accuracy of X, Y and Z Axis |
0.02.5 |
| 9,Repeated positioning accuracy of X, Y and Z axes |
0.015 |
Note: X-axis, Y-axis positioning accuracy and repetitive positioning accuracy are detected by GB/T 17421.2-2000 detection method. The indexing accuracy and repetitive indexing accuracy of rotating shaft and B axis are tested by GB/T 17421.2-2000.
2,Processing Indicators
(1)Machining accuracy:≤±0.05mm,.(Workpiece material: superalloy or stainless steel; workpiece thickness≤10mm; Electrode material: brass tube;diameterØ1.0mmThrough hole; vertical surface processing)
(2)Mini.machined surface roughness:Ra≤2.6μm
(3)Remelt Layer Thickness≤0.020mm(Workpiece material: superalloy or stainless steel,Thickness of Workpiece≤40mm, Electrode diameter≤Ø1mmThrough hole
Basic Scheme of Host
1,In order to complete the automatic processing of small holes in different positions of the specified workpiece, the machine has four motion axes, of which three axes are numerically controlled. The main machine adopts C-type structure, the bed adopts high-quality castings to produce high-strength body structure and resin sand technology to cast as a whole. The worktable is equipped with X, Y and axis to complete the displacement of workpiece holes. Tools and workpieces are installed on the worktable surface, and the liquid receiving plate does not rotate along the axis. X and Y are rectangular linear motion axes and horizontal rotating coordinate axes. The Z axis is a linear motion axis, which drives the spindle head to move vertically to adjust the distance between the spindle and the workpiece. The spindle head is equipped with S as the linear servo motion axis to complete the servo feed of the electrodes in the machining process; W as the linear motion axis to complete the adjustment of the position between the guide and the workpiece; R as the rotating axis to complete the rotating high-voltage liquid conduction, rotating feed and clamping of the electrodes in the machining process.
2,Machine tools are equipped with water conductivity automatic control working fluid system, which automatically detects and processes water conductivity. The system is equipped with three-stage filtration, gas-liquid booster pump for high-pressure working liquid and stainless steel plate for working liquid tank. The system consists of stainless steel water tank, self-priming pump, high-pressure pump, throttle valve, filter, water conductivity automatic control system and pipeline. It realizes flushing in the process of processing, cooling and chip removal in the processing area.
3,In order to improve the accuracy and reliability of the machine tool's motion position, the X, Y and Z axes of the machine tool are driven by AC servo motors, and the Taiwan linear guideway and the Taiwan ball screw drive.
Pulse power supply
1,Green High Frequency Power Supply with High Efficiency, Energy Saving and Low Loss to Improve Roughness by Using Digital Pulse Power Supply
Effectively control the remelting layer on the machined surface.
Pulse power supply has the functions of short circuit current protection and adaptive control.
Pulse parameters and processing current are controlled by computer, and can be set freely under the menu of processing homepage.
4,Selection of pulse parameters: pulse width 30, stop 15.
Control system
1,X, Y and Z motion axes are driven by AC servo motor.
2,The control system adopts industrial computer, LCD color display and USB interface. The control software developed independently by our company is adopted.
3,It realizes 3-axis point-to-point NC, and each NC axis has the function of travel limitation.
4,Coordinate display, processing status display, processing point display;
5,Single hole processing time monitoring;
6,It has the function of power outage memory and the function of sending messages when the electrodes are used up.
7,Driver failure alarm;
Technological Measures for Controlling Machining Accuracy
1,After each hole is processed, the loss part of the electric extreme part is automatically repaired to improve the consistency of the hole size and reduce the taper.;
2,In the process of processing, the regulation can be automatically changed.
3,It has an external flushing fluid to facilitate the penetration of the outlet of the hole.
4,Zero-alignment of workpiece hole surface and time-limited monitoring technology are adopted to improve the consistency of hole size.
5,By using the combined guide, the length of the guide is large and the rigidity of the guide is good, which can improve the processing straightness and dimensional accuracy of the hole.
6,Each NC axis is equipped with absolute zero position. When each piece is processed, the absolute zero position can be returned to eliminate accumulated error and improve the position accuracy of the hole.
Major Parts Supplier
| S/N |
Spare parts |
Manufacturer |
QTY |
| 1 |
NC Controller |
Longkai, Suzhou |
1 |
| 2 |
Spindle Servo Motor |
Yintong |
1 |
| 3 |
Z-axis servo motor |
yankong |
1 |
| 4 |
X.Y Axis Servo motor |
Mai Xun |
2 |
| 5 |
Bed Castings |
Mihanna Grade Cast Iron |
1 |
| 6 |
principal axis |
Taiwan |
1 |
| 8 |
Spindle bearing |
Japan NSK |
1 |
| 9 |
X.Y.Z Axis Ball Screw |
Taiwan Yintai |
1 |
| 11 |
Drive assembly |
Taiwan |
1 |
| 12 |
Cooling assembly |
Taiwan |
1 |
| 14 |
Self (manual) lubrication system |
Taiwan |
1 |
Standard equipment for mainframe
KT510-M Controller Sheet Metal for Build Hardware Factory
Automatic lubrication system Foot bolts and pads
T-groove table
Horizontal adjustment screw and gasket
Hold-all
Working lamp
Warning lights
Electric box heat exchanger
Casting is Taizheng, Taiwan
Motor protector MOELLER
Electromagnetic contactor MOELLER
Relay, adapter board is Omron
Chinese panel isTaiwan Xinquan
Fully enclosed anti-splash device
Three-axle slideway telescopic shield
Mechanical, Electrical and Operational Instructions
Random Accessories
List of Random Accessories of CNC EDM Machine Tool
| S/N |
name |
spe |
QTY |
| 1 |
Foot screw |
|
6 |
| 2 |
Parallels |
|
6 |
| 3 |
Nuts and washers |
M8 |
each4 |
| 4 |
T-groove nut |
(Screw holeM8) |
4 |
| 5 |
Drill chuck wrench |
JST4 |
1 |
| 6 |
Pressboard |
|
4 |
| 7 |
Double-headed bolt |
100,130,160mm |
each4 |
| 8 |
Ladder pad iron |
B/M/S |
2 |
| 9 |
Synchronized Tooth Belt |
230XL |
2 |
| 10 |
Seal ring |
For high pressure pumps |
3 |
| 11 |
Electrode Seal Ring |
Φ0.3~Φ3.5mm |
30 |
| 12 |
Carbon brush |
Used for rotating head |
4 |
| 13 |
Synchronized Tooth Belt |
MXL123 |
2 |
| 14 |
Cross screwdriver |
75×5mm |
1 |
| 15 |
screwdriver |
75×5mm |
1 |
| 16 |
Adjustable wrench |
250×30mm |
1 |
| 17 |
Inner hexagonal wrench |
4,5,6,8,10,12 |
each1 |
Installation, commissioning, acceptance and training, after-sales service
1,Installation and commissioning
Please install 380 V, 50 Hz three-phase power supply in advance and suggest a voltage regulator.
When the equipment arrives at the factory, it will be inspected with our representative. If damage or shortage is found, please inform us immediately.
After arrival, please first carry out mechanical positioning, rough level adjustment and other work, follow-up installation fine tuning and training, please inform our company at least 7 days in advance to send people to go.
4.Please assist us in arranging accommodation, meals and transportation for installation and commissioning personnel.
5.Please appoint the operator and maintenance personnel of the machine, and appoint special personnel to assist us in the installation and commissioning of machine tools.
6.After the mechanical acceptance is completed, your company should sign the machine acceptance report immediately, in duplicate, and each party should keep one copy.
2,check and accept
1.Installation acceptance work, in principle, is set at seven working days, before which the buyer will prepare for installation and commissioning.
2.Appearance Inspection: The buyers and sellers conduct visual inspection of the appearance, and the tools and accessories are checked and accepted according to the contract and accessories.
3.Acceptance of performance and function: Acceptance and acceptance shall be carried out according to the supply scope of machinery and controllers confirmed by both parties.
4.Acceptance and Acceptance of Mechanical Accuracy: According to our company to provide random factory accuracy test records for acceptance basis. However, the inspection accuracy in the manufacturing process is no longer checked, and the inspection items in the accuracy checklist are taken as the basis for acceptance. The buyer shall be responsible for providing the relevant equipment and measuring instruments required for inspection.
3,Technical training
User factory training: In the process of machine tool installation and debugging, the service personnel of our company train users in operation, programming and maintenance.
Training content:
| S/N |
project |
Training content |
| 1 |
operation |
Start-up and shut-down steps;
Introduction of key function of operation panel;
Operational explanations of the beginning, interruption and end of processing procedures;
Recovery after ATC interruption;
Introduce of the matters needing attention in machine tool operation.
Operational exercises. |
| 2 |
programming |
Introduction of coordinate system;
Introduction of G, M, S and T instructions;
Introduce of the composition and structure of the program are
Description of methods for editing, storing and using programs;
Introduction of programming practice. |
| 3 |
upkeep |
Introduction of the mechanical structure;
Introduction of circuit structure;
Introduction of main points of daily maintenance;
Introduction of general fault diagnosis;
Introduction of general troubleshooting methods;
Upkeep practice. |
4,After-sale service
Establish files for each customer and follow up after-sales service for life from the date of machine tool installation.
The quality, specifications and performance of machine tools conform to the contract. On the premise of correct installation, proper use and maintenance, the machine tools are guaranteed free of charge for 12 months from the date of acceptance.
During the warranty period, it is verified that if the user causes the mechanical appearance or internal damage due to the loading and unloading transportation process and the long storage time, and the man-made damage caused by improper operation and self-disassembly and refitting is not within the scope of the above free warranty, the user must pay all the repair and maintenance costs.
4.Over the warranty period, our company will continue to provide maintenance services for users, and according to our company's fee standards to collect parts costs and service costs.
Audited Supplier 
Chinese Direct Manufacturer CNC Drilling Machine SK703-4050 Edm Small Hole Drilling Machines
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