Automatic Rotary CNC Drilling Machine for Double Round Tubes
High-Efficiency 4-Axis Dual-Spindle System for Precision Multi-Angle Pipe Drilling Operations
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Features
4th-Axis Rotary Indexing: 360° continuous rotary axis allows multi-face drilling in a single setup without reclamping.
Pneumatic Tube Clamping: Self-centering chucks and steady rests secure round and square pipes vibration-free.
Automotive Batch Productivity: Engineered for high-volume automotive shafts, brackets, and tubular components.
Rigid Repeatable Positioning: Precision ball screws and servo drives achieve ±0.02mm positioning repeatability.
In-Depth Engineering Description & Technical Overview
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Product Overview
The Automatic Rotary CNC Drilling Machine for Double Round Tubes (Model: DNC-500DD(R2)) is an advanced, industrial-grade 4-axis CNC drilling system engineered for high-precision, multi-angle hole drilling across double round pipes. Featuring high-speed dual servo spindles capable of speeds up to 60,000 RPM and absolute servo positioning, this machine delivers high-throughput automated drilling for complex tube geometry and mass-production workflows.
Designed for rigorous industrial applications, the machine integrates precision HIWIN linear guides, API laser interferometer calibration, and a heavy-duty stress-relieved base to ensure long-term dimensional stability and positioning repeatability within ±0.02mm.
Key Technical Features & Advantages
- Dual Servo-Driven Spindle Efficiency: Operates with synchronized or independent dual spindles (0.55–3.0 kW), dramatically cutting cycle times for double-tube machining while maintaining thermal and mechanical stability.
- High-Precision 360° Rotary Axis: Features a precision continuous rotary axis (A-axis 360°) enabling continuous indexed and multi-angled hole pattern processing on tube diameters from 10 mm to 70 mm.
- High-Speed Micro Drilling Capabilities: Supports micro-drilling hole diameters from 0.2 mm to 4.0 mm with feed speeds on the X-axis up to 60 m/min and Z-axis up to 25 m/min.
- Flexible 4-Axis Control System: Equipped with an intuitive CNC control panel supporting direct CAD/CAM file imports, G-code computer programming, and manual teaching modes with onboard memory for over 10,000 program routines.
- Rigid Frame Construction: Built with an annealed, stress-relieved steel machine bed engineered to dampen high-frequency vibration during elevated RPM processing.
- Automatic Oil Cooling & Lubrication: Integrated spindle and guideway auto-lubrication system reduces friction heat and extends component life under continuous 24/7 continuous production.
Precision Quality Assurance & Standards
To ensure conformity with international industrial standards (CE and ISO compliance), every machine undergoes full dynamic geometric calibration prior to dispatch using an API Laser Interferometer (USA). Volumetric positioning error across the X (500 mm) and Z (200 mm) travel axes is strictly controlled within 0.02 mm.
Material Compatibility & Applications
This automatic rotary CNC drilling machine is optimized for continuous micro-hole and pattern drilling across diverse conductive and non-ferrous metals:
- Ferrous Metals: Carbon Steel, Stainless Steel, Iron Alloys
- Non-Ferrous Metals: Aluminum, Copper, Brass, Zinc, Titanium, Platinum
- Key Industries: Aerospace fluid systems, automotive exhaust & hydraulic tubing, medical device tubing, HVAC heat exchangers, and precision furniture frames.
For complementary tubing automation systems, explore our CNC Precision Drilling Machine for Round Tubes and Long Pipe Double Spindle CNC Drilling Machine.
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-500DD(R2) Round Pipe CNC Drilling Machine |
| XYZ three-axis machining stroke | X 500mm, Z 200mm, A 360° |
| Spindle speed | 1500~60000rpm (Can be selected according to demand) |
| Spindle taper hole | Reducer sleeve |
| Spindle power | 0.55~3.0KW |
| X axis moving speed | 30m/min~60m/min |
| Z axis moving speed | 25m/min |
| Range of Drilling Diameters | 0.2~4mm |
| Clamping diameter of rotating shaft | 10~70mm（Selection on demand） |
| Tool magazine | Pneumatic push tool changer |
| Repeated positioning accuracy | ±0.02mm |
| Programming mode | CAD file import / computer programming / manual programming |
| System program storage capacity | About 10,000 |
| System external signal control | Support |
| Operating voltage | AC 220V/50HZ |
| Machine weight | Approx. 850KG |
| Equipment Footprint | 2200mm x 1200mm x 1700mm |
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 repeated positioning accuracy of the Automatic Rotary CNC Drilling Machine?
What range of hole diameters can this machine drill?
Which tube sizes and clamped diameters are supported?
What materials can be processed on this CNC pipe drilling system?
How does the dual-spindle system improve efficiency?
What programming modes and interface signals are supported?
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