3-Axis Heavy Duty VMC & Heavy Cutting CNC Milling Machine
Built with HT300 Premium Cast Iron and Triangular Box-Column Structure for High-Torque Heavy Metal Cutting Precision
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Features
Triangular Box Column Rigidity: Heavy-duty cast iron box column structure provides maximum cutting rigidity and vibration dampening.
High-Torque BT40/BT50 Spindle: High-power direct/belt drive spindle delivers strong milling, drilling, and tapping torque.
High-Speed Umbrella/Arm ATC: 16–24 tool magazine completes tool changes in under 2 seconds to optimize multi-process jobs.
Pre-Tensioned C3 Ball Screws: High-grade ball screws on all axes ensure long-term thermal stability and ±0.02mm accuracy.
In-Depth Engineering Description & Technical Overview
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Premium Heavy Duty VMC Structural Architecture
The Heavy Duty VMC (Vertical Machining Center) from DUOMI CNC is custom-engineered to excel in high-torque, heavy cutting operations across demanding industrial sectors such as mold & die fabrication, automotive engineering, aerospace, and energy equipment manufacturing.
Premium HT300 High-Tensile Cast Iron Base
Our primary machine frame components are poured using HT300 high-tensile cast iron with a surface hardness treated to HB250. Every structural casting undergoes high-temperature stress-relief annealing followed by extended natural aging to achieve zero residual internal stress, ensuring lifetime geometry stabilization without mechanical deformation.
Advanced Rib Reinforcement & Vibration Damping
- 3-Layer Base Rib Design: Provides superior foundation support during aggressive material removal rates.
- 2-Layer Column Cross-Ribbing: Shifts structural resonance frequencies far outside operational spindle harmonics, reducing micro-vibration during rough milling.
- 1:1:1 Golden Ratio Interface: The contact connection between the spindle head stock and column adopts a 1:1:1 proportion, delivering maximum cutting rigidity and thermal symmetry.
High-Rigidity Guideway Motion System
Equipped with Taiwan HIWIN 45mm heavy-duty roller linear guideways on linear axes, this 3 Axis CNC Milling Machine merges the dampening capability of box ways with the speed and agility of linear guidance systems.
Advanced 6-Stage Manufacturing & Casting Process
To deliver ultimate dynamic stability for heavy metal cutting CNC operations, our structural machine bed undergoes a rigorous ISO 9001-certified manufacturing workflow:
- Lost Foam Mold Milling: Ultra-precise CNC pattern milling for intricate internal rib geometry.
- Automated Line Molding: High-density sand compaction eliminates casting voids and internal wall porosity.
- Resin Sand Reinforcement: Maximum mold wall strength prevents dimensional deformation under molten iron pressure.
- Induction Furnace Melting: Precise alloy composition management to maintain surface hardness ≥ HB250.
- Monolithic Casting Pouring: Instant foam vaporization creates a seamless single-piece structural frame.
- Thermal Annealing & Aging: Complete internal stress release guarantees long-term accuracy.
Precision Capabilities & Drive System
- High-Torque BT40 Direct Drive Spindle: Standard 8,000 RPM (BT40-φ150mm) spindle delivers high torque for heavy-duty metal removal on tool steels and superalloys.
- Positioning Accuracy: High-precision ground ball screws (4016 series) deliver ±0.02mm / 300 mm positioning tolerance and ±0.02mm / 300 mm repeatability.
- High-Speed CNC Control System: Powered by the Mitsubishi CNC Controller, enabling real-time look-ahead algorithm control, high-speed contouring, and thermal drift compensation.
- Tooling Efficiency: Integrated 24-tool magazine reduces chip-to-chip downtime for continuous automated manufacturing operations.
Industrial Applications
This Heavy Cutting CNC Machine is optimized for processing high-hardness and difficult-to-machine alloys, including: - Tool & Die Steel: P20, H13, D2, NAK80 - Exotic Superalloys: Inconel, Hastelloy, Titanium Alloys, Stainless Steel 316L/17-4PH - Heavy Ferrous Metals: Cast Iron, Structural Steel, Toughened Bronze, Tungsten
For custom non-standard configurations, specialized spindle options, or OEM requests, contact DUOMI CNC engineering team.
Purchase & Delivery Guarantees
Direct Factory Assurance — Built, Tested, and Supported from Dongguan to Your Shop Floor
Runs on Your System
Standard GSK control (100% Fanuc G-code compatible) or optional Mitsubishi/Siemens. Direct CAD file import for code-free toolpath generation.
Factory Video FAT
Live drilling/tapping tests on your actual workpiece recorded before dispatch. Final 50% balance payment is paid only after your video approval.
40-Day Build & Rugged Crate
Guaranteed maximum 40-day manufacturing cycle. Sealed in anti-rust vacuum aluminum foil and bolted in fumigation-free timber crates (EXW/FOB/CIF).
Direct Engineer Care
Direct 1-on-1 WhatsApp group with your machine's build engineers, 12-month full warranty, and critical replacement parts dispatched via DHL within 24–48h.
Every DUOMI machine is built under a transparent 13-step factory production & responsibility chain.
Parameters
Download Technical Brochure| Model | DNC-LV 855 |
| X-axis Travel | 800 mm |
| Y-axis Travel | 550 mm |
| Z-axis Travel | 550 mm |
| Table Size | 1000 * 550 mm |
| Max. Table Load Capacity | 500 Kg |
| T-Slots (No. – Width × Spacing) | 5-18*90 mm |
| Spindle Speed | 8000 rpm |
| Spindle Taper | BT40-φ150 mm |
| Main Motor Power | 7.5 Kw |
| Ball Screw (X/Y/Z Axis) | 4016/4016/4016 |
| Rapid Traverse Speed (X/Y/Z Axis) | 36 M/Min |
| Linear Guideway Size (X/Y/Z Axis) | 35/45/45 |
| Positioning Accuracy | ±0.02mm/300 mm |
| Repeat Positioning Accuracy | ±0.02mm/300 mm |
| Tool Magazine | 24 |
| Machine Weight | 4800 Kg |
| Overall Dimensions (L × W × H) | 2500*2500*2600 mm |
| CNC Controller | Mitsubishi System (High-Speed & Precision) |
Machining Samples
Real parts processed by our machines
Frequently Asked Questions
We “only” do drilling & tapping. Why do customers still choose Duomi over general-purpose CNC machines?
What does “Your part defines the solution” mean in practice?
What is the positioning accuracy of this Heavy Duty VMC?
How does the triangular box-column structure benefit heavy metal cutting CNC operations?
What materials can be processed on this 3 Axis CNC Milling Machine?
What spindle specifications and tooling options come standard?
What CNC controllers are supported on DUOMI VMC machines?
Can DUOMI provide customized non-standard CNC machinery?
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