Precision CNC Turning

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Certifications ISO 9001:2015 | ISO 14001:2015

CNC Turning Process

CNC Turning workflow

is a precision manufacturing method that controls the lathe for rotational processing through computer

numerical control technology

. Rotate the workpiece through numerical control, and fix and move the cutting tool. The workpiece is clamped on the spindle and rotates at high speed—the cutting tool moves along the preset path to cut the material. The cutting depth, feed rate, and spindle speed are controlled by programming (G code /CAM). This processing method is suitable for the mass production of cylindrical, conical, or

axisymmetric parts

Shengyi Intelligent Technology has over 20 sets of CNC turning machines. We are dedicated to providing customers with high-quality turned parts. Our professional engineers will customize the most suitable production method for you according to the customer's requirements and price range based on the customer's requirements and price range. While ensuring quality, the customer's price is also our key consideration.

CNC Turning Application

Automobile Industry

✓
Car wheel hub screws
, metal screws used to fix tires, need to be high-strength and not prone to rust. Precise threads are quickly cut through CNC turning to ensure that each screw is of consistent size and will not slip during installation.
✓
Engine piston rings
and metal rings are used outside the piston to help seal and dissipate heat. The wear-resistant alloy steel is processed by CNC turning to control the thickness and roundness of the ring, ensuring a tight fit with the cylinder wall and reducing fuel consumption.
Medical Industry

✓ The
metal shaft connecting
the two pieces of the
surgical scissors
needs to be smooth and corrosion-resistant. Made of medical stainless steel, it is polished to a mirror finish after CNC turning to avoid bacterial residue and facilitate high-temperature disinfection.
✓
Denture metal brackets
, the metal frames that support false teeth, need to fit the shape of the patient's mouth. Customized according to the patient's tooth modulus data, a lightweight yet sturdy bracket is made by CNC turning of titanium alloy, providing comfortable wearing for a long time.
Electronics Industry

✓ The
mobile phone metal buttons
, such as the volume or power button on the side of the phone, should have a smooth feel. The minor keys are CNC turned from aluminum alloy, and the surface is sandblasted to prevent fingerprints and have a delicate touch.
✓
Notebook computer heat dissipation copper tubes
, hollow copper tubes that help with heat dissipation, have complex grooves inside. By CNC turning, heat dissipation patterns are engraved inside the copper tubes to enhance heat dissipation efficiency and prevent the computer from overheating.
Home Appliance Industry

✓ The
washing machine drum rotating shaft
, a metal shaft connecting the motor and the drum, withstands high-speed rotation. Durable rotating shafts are made by CNC turning with high-strength steel, and balance tests ensure no vibration during operation.
✓
Coffee machine metal filter screen
, a circular metal mesh for filtering coffee grounds, with holes evenly distributed. Hundreds of micro-holes are precisely CNC machined on the stainless steel sheet, which is aesthetically pleasing and effectively filtering.
Aerospace

✓ The unmanned aerial
vehicle propeller shaft
, the slender metal shaft connecting the motor and the propeller, must be lightweight. CNC turning of aviation aluminum materials turns out hollow shafts to reduce weight while ensuring strength during high-speed rotation.
✓
Rocket fuel valve parts
, small valves that control fuel flow, must withstand high temperatures and pressures. Precision threads and sealing surfaces are machined on titanium alloy materials through CNC turning to ensure zero fuel leakage.

Common CNC Turning Materials

Common Metal Materials

✓ Aluminum

✓ Stainless steel

✓ Brass

✓ Copper

✓ Titanium

✓ Mild steel

✓ Alloy steel

✓ Tool steel

✓ Spring steel
Common Plasticl Materials

✓ ABS

✓ Polycarbonate

✓ Nylon

✓ Polypropylene (PP)

✓ POM

✓ PTFE (Teflon)

✓ PMMA (Acrylic)

✓ Polyethylene (PE)

✓ PEEK

✓ Bakelite

✓ FR4

✓ Rubber

✓ Carbon Fiber

ISO 14001:2015ISO 14001 certification drives us to practice sustainable manufacturing, with green production as the core goal. We optimize cutting parameters to reduce the waste rate. The recovery rate of aluminum chips reaches 95%, and the coolant circulation system reduces hazardous waste emissions by 30%.
The upgrade of high-efficiency equipment has reduced energy consumption (case: annual electricity bill savings of 80,000 yuan), meeting the ESG audit standards of European and American customers.

ISO 9001:2015Through ISO 9001 certification, we have established a closed-loop of full-process quality management: from drawing review to finished product inspection, precise control is achieved. The standardized process ensures that the dimensional tolerance of parts is stable (±0.02mm), and the surface finish reaches Ra1.6μm. First Piece Inspection (FAI) and Process Monitoring (SPC) intercept batch defects. For example, in the processing of a certain medical part, the defect rate was reduced to 0.15%.

Surface Finishes

✓ Standard (As-Milled) (Ra 125μin)

✓ Bead blast + Anodized color

✓ Anodized

✓ Electrically conductive oxidation

✓ Black oxide

✓ Brushed

✓ Bead Blast

✓ Spray painting - Matt paint

✓ Spray painting - High gloss paint

✓ Powder coat - Matt

✓ Powder coat - High gloss

✓ Chrome plating

✓ Galvanization

✓ Nickel plating

✓ Silver plating

✓ Gold plating

✓ Tin plating

✓ Vacuum plating - High gloss paint

✓ Vacuum plating - Matt paint

✓ #1000 sanding

✓ Silkscreen

✓ Laser engraving

✓ Smooth machining (Ra1.6µm, 63 µin)

✓ Electrophoresis

✓ Passivation

✓ Etching

✓ Electropolished (Ra0.8µm, 32µin)

✓ PVD (Physical Vapor Deposition)

✓ Pickling

✓ Dyeing

CNC Turning Frequently Asked Questions
(FAQ)

What is the minimum machining diameter for CNC turning?

It can usually process outer circles with a diameter of φ2mm or more, and the micro lathe supports precision shafts with a diameter of φ0.5mm.
How can the long shaft parts avoid bending deformation?

Use tailstock or tool rest for auxiliary support, and cut in stages to reduce stress. The preferred material is 4140 alloy steel.
How long does the delivery cycle take?

For small-batch standard orders, it takes 3 to 7 days. The fastest express service is 48 hours (depending on the complexity of the parts).
What format is required for the design file?

We accept formats such as STEP, IGES, STL, and DWG, and offer free manufacturability analysis and optimization suggestions.