DUOMI CNC

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DUOMI CNC Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from DUOMI CNC, Commercial and industrial equipment supplier, No. 8, Chuangsheng Road, Shangsha Community, Changan Town, Dongguan City.

DUOMI is a drilling & tapping productivity specialist, helping global manufacturers increase machining output, reduce operations, and lower cost per part through high-efficiency CNC solutions.

16/10/2026

Ditch the weld nuts! Flow drilling + NPT 1/4" tapping on an air tank 🔥

How do you create leak-proof threads on a thin-walled air tank? Thermal friction drilling creates a strong bushing 3x the original wall thickness, followed by a chipless NPT 1/4" roll tap. Fast, clean, and 100% airtight! 💨💪 Need custom machining solutions? DM us!

14/10/2026

What Better Proof of Trust Than a Repeat Order?

13/10/2026

Large Workpiece Side Drilling & Tapping Solution

12/10/2026

Quick question for the machinists and shop owners working with sanitary or pharma tubing:

How many of you have had operators spend half their shift deburring the inside of a tube after drilling micro-holes?

We recently analyzed a process at a food-grade mixing equipment plant that was running into a massive bottleneck. They had to drill hundreds of Ø0.8 mm holes through 3.5 mm wall stainless steel tubes—often up to 3 meters long.

Because they were using traditional bench drilling setups, three brutal things kept happening:

The aspect ratio (~4.4:1) meant drill bits buckled and snapped constantly due to uneven manual thrust.
Austenitic stainless work-hardens fast if peripheral cutting speed isn't high enough. The tool rubs, glazes, and snaps.
The exit breakout left nasty rollover burrs on the inside diameter. In sanitary food/pharma equipment, that completely ruins CIP (clean-in-place) compliance.
The real fix wasn't buying "better drill bits"—it was cutting mechanics. By switching to a dedicated tube setup with an integrated 360° rotary axis and running a motorized micro-spindle at 60,000 RPM, the cutting dynamics completely changed.

At 60k RPM with programmed micro-feeds, the tool achieves true high-velocity shearing rather than plastic tearing. The breakthrough comes out completely clean on the inside, eliminating manual deburring entirely. Plus, runout stays within ±0.02 mm across the full 3000 mm stroke.

Curious how other shops tackle micro-drilling on cylindrical profiles—are you using high-frequency spindles, EDM, or specialized tooling geometries?

10/10/2026

High-Efficiency Drilling & Tapping for Square Tubes

07/10/2026

Delivery Isn’t the End. That’s Where Service Begins.

05/10/2026

Ø0.7mm × 14mm, 6.742° Angled Hole — How Do You Drill?

30/09/2026

THE MONEY-MAKER DISPATCHED!

29/09/2026

Ever wondered what’s behind the CNC machines you see in our videos?

Take a look inside DUOMI’s manufacturing facility in Chang’an, Dongguan, China.

From multi-spindle drilling and tapping machines to large gantry machines, automatic tool-changing models and 5-axis drilling systems, our workshop covers a wide range of configurations for different machining requirements.

We also have a dedicated sample-testing area, where customers can send their parts or visit us for machining trials before moving forward with a machine solution.

Our customers come from industries including aerospace, marine, automotive, rail transit, mold-making and furniture.

Different workpieces require different solutions. That’s why we build machine configurations around the application.

Welcome to DUOMI. If you’re ever in Dongguan, you’re welcome to visit our factory and see the machines for yourself.

29/09/2026

EV Frame Threading | Multi-Station Friction Drilling & Tapping

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No. 8, Chuangsheng Road, Shangsha Community, Changan Town
Dongguan City
523000

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