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Precise Machining: Exploring CNC Turning and Milling Techniques for Custom Parts Creation

As manufacturing and engineering industries continue to evolve, so do the methods of creating intricately designed parts. Computer numerical control (CNC) is one such advancement that has revolutionized the fabrication of custom components. With CNC machinery comes a level of precision and efficiency that rivals many traditional techniques. In this blog post, we'll explore the CNC turning and milling processes that help turn raw materials into refined, high-quality parts.

CNC Turning: A Closer Look at this Machining Process

One of the most commonly used CNC processes, turning involves the rotation of a workpiece while a cutting tool removes excess material. The spinning action is facilitated by a lathe, which holds the workpiece securely in place. Turning is ideal for situations where radial symmetry is required, as it easily creates cylindrical and conical shapes.

Types of CNC Turning Operations

Several operations can be performed using CNC turning, depending on the desired result. Some common methods include:

Facing- The cutting tool moves parallel to the workpiece's axis, resulting in a flat surface created on the end.

Grooving- A narrow, recessed channel is formed as the cutting tool moves axially or radially.

Threading- Using an axial or radial motion, the cutting tool creates screw threads on the workpiece's external or internal surface.

Knurling- A diamond or straight pattern is embossed on the workpiece's surface, offering increased grip.

CNC Milling: Adding a New Dimension to CNC Machining

While CNC turning is certainly effective for creating radial parts, CNC milling provides even greater versatility. Milling machines use a spinning cutter to remove material in a linear motion, both horizontally and vertically. This technique allows for intricate shapes and contours, making it ideal for a wider range of applications than turning alone.

Types of CNC Milling Operations

With numerous milling operations available, CNC machinery can create parts with a high degree of complexity. Some common milling techniques include:

Face Milling- Similar to facing in turning, the cutter moves parallel to the workpiece's surface, resulting in a smooth, flat finish.

Pocket Milling- The cutter removes material within a confined, recessed area, creating pockets or cavities on the workpiece's surface.

Contour Milling- By following a predefined path, the cutter generates complex, three-dimensional shapes and curves.

Drilling- The cutter penetrates the workpiece, creating cylindrical holes that may extend all the way through or to a specific depth.

Combining CNC Processes for Ultimate Precision

Though CNC turning and milling can each produce high-quality parts, a combination of the two often delivers even greater accuracy and complexity. Many manufacturing facilities now employ machines that incorporate both turning and milling capabilities, which provides several advantages:

1. Greater Efficiency- Combining multiple operations within one machine reduces the need for separate setups, ultimately saving time and labor.

2. Reduced Costs- With fewer machines required for a project, the overall cost of production may be lower.

3. Improved Accuracy- The combination of turning and milling allows manufacturers to simultaneously work with multiple axes, achieving intricately detailed and precise parts.

CNC Turning and Milling Applications

CNC turning and milling techniques can be applied to a diverse array of industries, each demanding reliable, high-quality components. Some of these industries include:

Aerospace- Airplane, helicopter, and spacecraft parts are often carefully engineered using CNC turning and milling processes due to their efficiency and precision.

Automotive- Vehicle components, such as engine blocks, shafts, and gears, are frequently machined using a combination of turning and milling techniques.

Medical- The creation of customized implantable devices and surgical instruments is made possible by the precision and flexibility offered by CNC processes.

Electronics- Many small, intricate parts, such as connectors and PCB boards, rely on CNC milling for their fabrication.

Whether it's a simple turned cylinder or a complex milled mechanism, CNC processes offer the precision and efficiency required to bring intricate designs to life. As technology continues to advance, so will the capabilities of these powerful machines, providing even more opportunities for custom component creation. With the right mix of turning and milling expertise, manufacturers are equipped to face the challenges of modern engineering and deliver innovative solutions for years to come.

cnc turning and milling parts

What is CNC Turning

CNC turning is a process that involves using computer numerical control (CNC) machines to shape and finish various materials, such as metals and plastics, into desired shapes and sizes.
This process is typically used in the manufacturing industry to produce precision parts and components for a wide range of applications, including automotive, automation, aerospace, medical, machinery, and industrial.

CNC Turning service

Asianstar Professional CNC Turning Service

Asianstar CNC turning Service offers precision machining for a wide range of materials, including metals, plastics, and composites. With high level facilities and skillful operators, we can produce high-quality parts with tight tolerances and intricate designs.

Our CNC turning capabilities allow us to produce parts with diameters ranging from 0.5 mm to 480mm and lengths up to 450mm. We offer both single and multi-axis turning, as well as live tooling options for added complexity and accuracy.

We use proven processes and quality control measures to ensure that every part we produce meets our clients' specifications and expectations.

Whether you need a single prototype or high-volume production runs, our CNC turning service can provide the precision and reliability you need to get your project completed on time and on budget.

CNC Turning service

Components Sizes of Asianstar CNC Turning Service

Unit (mm) Min Max
Out Diameter 0.5 480
Inner Diameter (Hole) 0.3 465
Length 1.0 450
Groove Diameter 0.4 above
Thread M1.2 above

Components Tolerance of Asianstar CNC Turning Service

Unit (mm) Tolerance according to sizes
Height Tolerance Diameter Size 0.5 to 3 3 to 6 6 to 30 30 to 120 120 to300 300 to480
Tolerance ±0.003 ±0.010 ±0.020 ±0.030 ±0.035 ±0.040
Length Tolerance Length Size 0.5 to 3 3 to 6 6 to 10 10 to 20 20 to 30 30 above
Tolerance ±0.010 ±0.020 ±0.250 ±0.250 ±0.030 ±0.035

Components shape and position tolerance of Asianstar CNC Turning Service

Tolerance Class followed Tolerance (mm)
Straightness and Flatness Verticality Symmetry
10 10 to 30 30 to 100 100 to 300 300 to 1000 1000 to 3000 to 100 100 to 300 300 to 1000 1000 to 3000 to 100 100 to 300 300 to 1000 1000 to 3000
H ±0.015 ±0.02 ±0.03 ±0.05 ±0.10 ±0.15 ±0.02 ±0.025 ±0.03 ±0.035 ±0.02 ±0.03 ±0.04 ±0.05

Capability of Asianstar CNC Turning Service

Type of Turning Machine Diameter Size (mm) Length Size (mm) Productivity (PCS/Month)
Auto Turning Machine Simple Turning Machine Multi Turning Machine Pin Turning Machine Min 0.5 Max 480 Min 1.0 Max 450 200’000/Item


Multiple Machining Processes

Multiple Machining Processes

Asianstar has various machining processes to support different types of components from client, we can choose the best suitable manufacturing solution to carry result in perfect performance and cheap cost

Flexible Custom Service

Flexible Custom Service

With skillful machining technologies, Asianstar is flexible to support clients on different materials and different structures of the components, we also flexible on the components quantities and even assembly

Create Designing for Clients

Create Designing for Clients

Not only producing according to clients drawings, Asianstar also propose the better designing to clients, supporting clients to buildup improved designing or even new generation components

Standard Procedures

Standard Procedures

Asianstar production, as experienced by many years, is strictly following internal Standard Operating Procedures, to make sure the production schedule is smooth and plans are well carried out well without accidents

Standard Procedures

Standard Procedures

Asianstar strictly controlling product quality by system. We start QC controlling from production plan once setting up, to production process by monitoring QC checking and until the final Inspection before packing

Fast Lead-Time Delivery

Fast Lead-Time Delivery

Asianstar strictly control the production processes, teams keep the plan moving ahead according to the procedures, we have internal time management schedule which mostly bring earlier lead-time of delivery

Asianstar: Professional CNC Machining Supplier

From year of 2005, Asianstar Company establish the CNC Machining Factory in Guangdong Province, China.
We mostly provide CNC Turning, Milling, Drilling, Grinding, and Multi Machining processes service on various materials.
With the Belief of becoming a key supplier in the supply-chain of Precision Components, we strictly control our product quality, keep high precision on our components production, buildup the whole-process QC System and submit the satisfaction for every order.
By long term development, we have buildup partnership with world-wide clients, supporting our partners in Designing, Optimizing, Producing and Testing on each type of components.


CNC Turning Service

CNC Turning Service

Our CNC Turning Service provides different sizes of roll shape work-pieces, the diameter range is from 0.5mm to 480mm, reaching tolerance +/-0.003mm.

CNC Milling Service

CNC Milling Service

Our milling machines and CNC centers are able to produce complicated structure part, five-axis devices produce multi-sides at one-time jag which bring high precision result

Sheet Metal Fabrication

Sheet Metal Fabrication

Our Sheet Metal Fabrication provides slicing, punching, bending, welding, painting and assembling for set products, unique tooling for each project to raise production efficiency

Aluminum Extrusion

Aluminum Extrusion

Our Aluminum Extrusion brings clients various shapes of aluminum parts, high efficiency for mass quantity, our precision extrusion mold control tolerance within 0.01mm

Forging Service

Forging Service

For some steel serious products, we apply Forging Service to make out their outer shape and them use CNC devices to start drilling, forming, rolling, cutting, etc.

Finishing Service

Finishing Service

Our Surface Finishing Service uses chemical or electro post-treatments after machining tasks are finished, normally includes Oxide, Anodizing, Passivation, E-Plating, Painting,etc.


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    Yes, we support ODM/OEM, we provide custom-made service for clients or even support clients on designing or improving

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