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What is CNC turning and milling
CNC mill-turn machining, also known as turning-milling compound processing, is an advanced manufacturing technique that combines the precision of turning with the versatility of milling in a single setup. This integration allows for the creation of intricate geometries and complex features on a workpiece without the need for multiple setups, thereby enhancing efficiency and precision. The process begins with the raw material (metal or plastic) being loaded into the machine. Once the program is initiated, the machine rotates the material and moves the cutting tools along the desired path. The turning spindle handles operations like creating cylindrical shapes and profiles, while the milling spindle is responsible for tasks such as drilling holes or milling slots. This seamless combination of processes not only boosts productivity but also minimizes setup times and potential errors, making it an ideal choice for industries where high-quality, complex parts are required, such as automotive, medical, aerospace, and electronics.
How does cnc turning and milling work?
CNC turning and milling is an advanced manufacturing process that enables turning and milling operations to be performed simultaneously in a sequential manner by means of a machining center equipped with a lathe spindle and a milling spindle. The process first involves loading the raw material (metal or plastic) into the machine and then loading a program that causes the machine to begin rotating the material and moving the cutting tool along the desired path. The lathe spindle is responsible for turning operations, such as creating cylindrical shapes or contours, while the milling spindle is used for milling operations, such as creating holes or slots in the material. This integrated approach to machining increases productivity, reduces clamping errors, and ensures high accuracy and consistency of parts, which are widely used in the production of automotive, medical, aerospace, and electronic parts.
SCZY LTD Specialized CNC turning and milling services
With a team of highly skilled engineers, SCZY LTD offers a full range of CNC mill-turn services, including precision component machining, tight tolerances and consistent quality control for one-off fixtures, high-speed machining for increased efficiency, and customized solutions to meet complex requirements, ensuring high-quality and efficient deliveries.
Our CNC turning and milling services include:
1/ Precision machining of parts using turning and milling equipment;
2/ Tight tolerances and consistent quality for one-off fixtures;
3/ High-speed machining capability for improved efficiency;
4/ Customized solutions to meet complex customer needs;
Why can you trust SCZY LTD?
CNC equipment
Equipped with advanced multi-axis turning/milling systems, SCZY LTD efficiently manufactures complex parts from stainless steel, plastics, superalloys, etc. Our precision machining meets aerospace, medical and industrial needs with ±0.01mm tolerance capability.
higher quality
SCZY LTD deploys comprehensive QC systems and tools—including gauges, concentricity testers, roughness meters, projectors, CMMs, micrometers, and salt spray testers—to ensure every detail from dimensional accuracy to surface finish meets strict standards, guaranteeing superior product quality.
high efficiency
SCZY LTD mill-turn machines efficiently integrate multiple functions through disposable fixtures for fast, high-precision manufacturing, shortening the process chain and reducing errors, and the multi-axis linkage function enables the machining of complex shapes, further enhancing productivity.
Competitive price
SCZY LTD is committed to building partnerships with its customers, always selecting the most appropriate facility to deliver high quality components at competitive prices.
CNC Machining Parts Gallery
Large or small workpieces with machinable lengths and widths of 1–2000 mm. SCZY LTD can also provide surface treatment and assembly services upon request.
Turning And Milling Composite Surface Treatment
We provide one-stop, high-quality surface treatment covering sandblasting, anodizing, electroplating, electrophoretic coating, baking, chemical conversion coating, passivation, polishing, blackening, and QBQ protection, meeting strict industry requirements. Each process includes professional testing with data on film thickness, hardness, color, salt spray corrosion resistance, and adhesion. These ensure quality, giving products excellent protection, aesthetics, reliability, and stability.
Standard (As-Machined)
This finish refers to parts just after the machining process, sometimes followed by minor grinding. It contains tool marks, small burrs & chips, but provides tight tolerances. The roughness can be as low as 3.2 μm. This finish is suitable when aesthetics is not a requirement.
Bead Blasting
Bead blasting strikes the tiny glass, ceramic, or other beads on the machined surface at high pressure to remove tool marks, burrs, chips, and other surface irregularities. It produces a light and smoothie texture with an attractive appearance.
Anodized (Type II Or Type III)
The CNC-machined aluminum or non-ferrous parts can be anodized, which refers to adding and protective oxide layer on their surface. Type II is clear and color anodizing, whereas type III (MIL-A-8625/MIL-PRF-8625) refers to hard coating. Anodized surfaces resist harsh environments and save the parts from corrosion, wear, and surface degradation.
Powder coating
It is the electrostatic deposition of a thin powder layer(powder of epoxy, polyester, etc) and curing at high temperature, up to 400. Powder coat surfaces are highly corrosion-resistant and can be achieved in any color. It is applicable to all material-type machine parts with complex geometries.
Polishing
Polishing can be applied through electrochemical and mechanical methods. It produces a smooth and fine, mirror-like finish with Ra as low as 0.3 μm. This surface finish is preferred for machined parts if low-surface friction is essential for performance or aesthetics is important.
Black-Oxide
Black oxide is a surface treatment for ferrous materials that creates a sleek black appearance and offers mild corrosion resistance. It chemically converts the metal surface into an oxide layer, preserving tight tolerances. This finish is ideal for precision components where a low-reflective, durable surface is desired.
Turning And Milling Services Available Materials
SCZY LTD specializes in machining aluminum alloy, brass, titanium alloy, and engineering plastics (ABS, POM) with advanced five-axis CNC technology. Our custom services deliver ±0.01mm tolerance precision, serving aerospace, medical, and automation sectors with precision parts.
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Aluminum $High machinability and ductility, good strength-to-weight ratio. Aluminum alloys have good strength-to-weight ratio, high thermal and electrical conductivity, low density and natural corrosion resistance. Can be anodized.
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Stainless steel $$$High tensile strength, corrosion and temperature resistant. Stainless steel alloys have high strength, ductility, wear and corrosion resistance. They can be easily welded, machined and polished.
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Mild steel $High machinability and weldability, high stiffness. Mild steels are low-carbon metal alloys offering good mechanical properties, machinability and weldability at low cost. Can be carburized to increased hardness.
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Copper $$$Excellent thermal and electrical conductivity Copper offers excellent thermal and electrical conductivity, it's often used for busbars, wire connectors, and other electrical applications. Copper has a glossy reddish-orange appearance.
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Titanium $$$Excellent strength to weight ratio, used in aerospace, automotive and medical industries. Titanium is a metal with excellent strength-to-weight ratio, low thermal expansion and high corrosion resistance that is sterilizable and biocompatible.
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Tool steel $$$Tool steel has high hardness and can maintain high hardness and red hardness at high temperatures, as well as high wear resistance and appropriate toughness. Tool steel is generally divided into carbon tool steel, alloy tool steel and high-speed tool steel.
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Superalloy $$$Superalloys have excellent high-temperature strength, good oxidation resistance and hot corrosion resistance, good fatigue properties, fracture toughness and other comprehensive properties, and are mainly used in the aerospace and energy fields.
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Brass $$$Brass has strong wear resistance, high strength and hardness, and strong resistance to chemical corrosion. Brass is often used to make wear-resistant parts such as valves and watch movements.
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Alloy steel $$Alloy steel has special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and magnetism.
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Plastics $Engineering plastics have excellent comprehensive properties, such as high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used in harsh chemical and physical environments for a long time and can replace metals as engineering structural materials.
Extensive Industry Experience
SCZY LTD’s milling and turning deliver precision across industries: milling masters complex contours for micro-optical brackets, aviation connectors, etc., while turning excels at rotary parts—ensuring optical shaft finish, oil/gas valve core stability, and more. Together, they reliably meet diverse needs of clients in 20+ countries.
Automotive
Robotics
Energy
Medical Equipment
Optical Lens
Aerospace
CNC Turning and Milling Composite FAQ
Browse our turning and milling composite machining services FAQ to learn more about our turning and milling composite machining services and how we can support your manufacturing needs.
Turning and milling composite machining can complete multiple processes such as turning, milling, and drilling in a single clamping, reducing clamping errors (tolerance up to ±0.01 mm) and shortening the production cycle by more than 30%. It is especially suitable for processing complex irregular parts.
Supports metals such as aluminum alloy, stainless steel, and titanium alloy, as well as engineering plastics such as ABS and POM. For high-hardness materials (such as titanium alloy), cutting parameters can be optimized to ensure processing stability.
Dimension tolerances as tight as ±0.01mm and surface roughness as low as Ra≤0.8μm meet the stringent requirements of industries such as aerospace and medical for precision components, and multi-axis interpolation ensures accuracy for complex surfaces.
Suitable for parts with complex curved surfaces, irregular structures, or multiple process integration, such as aerospace brackets, medical device connectors, and automated equipment shaft parts, especially suitable for small and medium batch customization.
Prototypes: 1-3 days; small to medium batches (50-500 pieces): 5-10 days. Specific delivery times are adjusted based on part complexity and material. Rush orders are supported with a 24-hour rapid response.
It can be directly connected to surface treatment processes such as sandblasting, anodizing, and electroplating. Due to its high processing precision, it can maintain dimensional stability and surface finish after surface treatment.
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