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- Overview
- Main Parameters
- Control System Function
- Model Selection Guidance
- Recommended Products
Technical Specifications
Machine Model: DK7725 CNC EDM Wire Cutting Machine
| Item | Unit | Parameter |
| X-axis | mm | 250 |
| Y-axis | mm | 300 |
| Tabletop dimensions | mm | 580 × 400 |
| Maximum load | kg | 100 |
| Maximum Cutting Taper | ° / mm | ±6° / 80 mm |
| Maximum Cutting Workpiece Thickness | mm | 500 |
|
Electrode Wire Diameter |
mm |
φ0.12～φ0.2 |
|
Machining Accuracy |
mm |
≤ 0.015 |
|
Optimal Machined Surface Roughness (Single Cut) |
μm |
Ra ≤ 2.0 |
| Accuracy Inspection Standard | GB/T 7926-2015 | |
| Working Fluid | Dedicated working fluid for wire cutting (DX-1, DX-4, Nanguang-1) | |
| Stepping Motor | – |
90BF006 |
| Maximum Cutting Speed | mm²/min | 150 |
| Required Power Supply | KVA | 2 (3-phase ~380V, 50Hz) |
| Weight | kg | 1000 |
| Overall Dimensions | mm |
1485 × 1010 × 1400 |
| CNC Cabinet | – |
Single-board computer/PC/upright cabinet |
Reference Test Conditions
| Test Piece | Regular Octagonal Test Piece |
| Material | Cr12 Cold-Work Tool Steel |
| Material Hardness | HRC 58–60 |
| Workpiece Thickness | 10 mm |
| Cutting Mode | Single Cut |
| Electrode Wire | φ0.18 mm Molybdenum Wire |
| Wire Speed | Approximately 10 m/s |
| Working Fluid | Water-Based WEDM Working Fluid |
| Electrical Settings | Standard Factory Single-Cut Parameters |
| Ambient Temperature | 20 ± 2 °C |
| Machine Preparation | 30-Minute Warm-Up and Normal Machine Calibration |
| Measurement Method | Measure the across-flats dimensions at the upper, middle and lower sections with a 0.001 mm-resolution measuring instrument. Report the maximum dimensional deviation. |
| Inspection Reference | GB/T 7926-2015 |
Note
Reference values are based on the stated workshop test conditions. Actual results may vary with material, thickness, electrical settings, wire condition, working fluid and measurement method.
Control Functions
| No. | Function Description | Remarks |
| 1 | Integrated programming and control software | |
| 2 | Graphical tracking | |
| 3 | Arbitrary angle rotation | |
| 4 | Symmetrical machining | |
| 5 | Wire break protection | |
| 6 | Automatic shutdown upon program completion | |
| 7 | USB read/write functionality | |
| 8 | Four-axis coordinated cutting | |
| 9 | Automatic retraction on short-circuit | |
| 10 | Forward and reverse machining | |
| 11 | Machining simulation |
Key Components
| Name | Origin (Manufacturer) | Remarks |
| Control System | ||
| X8, AutoCut or HL control system | Configuration-dependent | |
| Mechanical Parts（optional） | ||
| Casting | Domestic | HT200 resin sand |
| Ball Screw Pair | Domestic: Shaanxi Qishan | Grade P3 |
| Guide Rail | Domestic: Bearing steel | Quenched |
| Roller | Domestic: Shanghai Danli | |
| Bearing | Domestic: Harbin (Grade P5); Japanese: NSK | |
| Electrical Parts | ||
| AC Contactor | Siemens | |
| Relay | Omron | |
| High-Frequency Power Tube | Imported from Japan | |
| Transformer | Wuxi | |
| Stepper Motor | Changzhou Songya | |
| Others | Japan, Taiwan, Joint Venture | |
Standard Accessories
| No. | Accessory |
| 1 | Work Light |
| 2 | Simple Fixture |
| 3 | Electrode Wire Vertical Alignment Device |
| 4 | Hand Lever |
| 5 | Wire Tensioner |
| 6 | Working Fluid System |
| 7 | Worktable Splash Guard |
Included Documentation
| No. | Documentation |
| 1 | Packing List |
| 2 | Factory Quality Inspection Report |
| 3 | One Copy of the System Operation Manual |
| 4 | One Copy of the Machine Tool User Manual |
After-Sales Service
- From the date of delivery, the supplier provides a one-year mechanical warranty. Under normal operating conditions, the supplier is responsible for free maintenance and replacement of spare parts; however, consumable parts, wear parts, and tools are not covered under the warranty.
- After the one-year warranty period, the supplier will provide the necessary spare parts for repairs and offer repair services at reasonable charges.
Operator Training
The supplier shall provide free on-site training for 1–2 technical personnel at supplier’s site, with a duration of 1 to 2 days.
| No. | Item | Training Content |
| 1 | Programming | Instruction on programming techniques |
| 2 | Operation | Introduction to overall machine structure, startup procedures, and control panel key functions |
| Program call-up, detailed operation instructions | ||
| Operational precautions and safety measures | ||
| 3 | Mechanical Maintenance | 1) Overview of mechanical structures: |
| – Structure of X, Y, Z, U, and V axes | ||
| – Hydraulic and lubrication system structure | ||
| 2) Common mechanical issues and maintenance: | ||
| – Wire breakage handling procedures | ||
| 4 | Electrical Maintenance | 1) Identification of common electrical components and symbols |
| 2) Basic electrical knowledge introduction | ||
| 3) Explanation of machine electrical control diagrams | ||
| 4) Troubleshooting of common electrical faults | ||
| 5 | Testing | Practical hands-on testing and machine operation verification |
Model Selection Guidance
The DK7725 provides 250 × 300 mm X/Y travel, a 100 kg table-load limit and a listed maximum workpiece thickness of 500 mm. Compare the DK7720 when 200 × 250 mm travel is sufficient, or the DK7735 when the job requires 350 × 450 mm travel and a 300 kg table load. See all single-cut wire EDM machines.
Information Required for a Technical Quote
Please send the workpiece material, maximum X/Y dimensions, thickness and weight; target tolerance and surface roughness; required power supply and destination country; and any preferred control system or automation requirement.
