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Mastering the Art of CNC Milling and Turning Operations

Operating a Computer Numerical Control (CNC) machine requires a high degree of skill, precision, and understanding of machinery. Particularly, the processes of CNC milling and turning are integral to manufacturing industries. This blog post unravels the multiple layers of these operations and guides you towards becoming a proficient CNC operator.

What is CNC Milling and Turning?

CNC Milling and Turning are two primary machining processes facilitated by the CNC machine. Milling involves the rotation of the cutting tool to remove material from a workpiece. On the contrary, turning operates on the principle of rotating the workpiece while the cutting tool stays stationary.

The World of CNC Milling

In CNC milling, the machine operates in multiple axes to create custom-designed parts from metal or plastic. It can perform various operations like drilling, tapping, and boring. The automation of the CNC machine ensures superior precision and repeatability in the manufacturing process.

Understanding Milling Tools

Recognizing and handling the right milling tool for each operation is paramount to successful CNC milling. The two main types of milling tools are end mills and face mills that vary in shape and size, each designed for specific kinds of milling operations.

Exploring Milling Techniques

CNC milling encompasses several techniques, including conventional milling (or Up milling) and climb milling (or Down milling).

Conventional milling, where the cutter rotates against the feed direction, is ideal for roughing applications and longer tool life. Meanwhile, climb milling, which moves in the same direction as the feed, provides a higher quality finish and is optimal for finishing applications, albeit with faster wear on the tools.

Stepping into CNC Turning

CNC turning primarily uses a lathe, a spinning machine that carves out circular shapes. This operation is ideal for producing intricate parts such as bolts or even aerospace components.

Appreciating Turning Tools

CNC turning tools have different shapes〞diamond, round, square〞each catering to a specific need. For instance, diamond-shaped tools offer precision for fine finishing, while square tools are suitable for roughing operations.

Unveiling Turning Techniques

In turning, two main techniques are longitudinal and transversal. Longitudinal turning, or &turning in the long*, moves the tool parallel to the axis of the workpiece, while &cross turning* or transversal turning involves moving the tool perpendicular to the workpiece*s axis.

Role of the CNC Operator

A CNC operator bridges the gap between design and manufacturing. They are responsible for programming the machine, setting up the tools, running test operations, and supervising the process. They need to be skilled, detailed-oriented, and knowledgeable about machinery to ensure the completion of the project to specifications.

Tips to Become a Proficient CNC Operator

1. Get Certified: Certification from a recognized institution signifies your competency and increases your job prospects.

2. Understand G-Codes: G-codes are the programming language of CNC machines. Spend time familiarizing yourselves with different G-codes.

3. Safety First: Always follow safety guidelines. Wear safety gear, ensure the work area is clean, and the tools are correctly installed.

4. Practice, Practice, Practice: Like any skill, the key to becoming proficient at CNC operations is practice. Utilize both theoretical knowledge and practical training.

5. Keep Up with Trends: The world of CNC is continually evolving. Stay updated with new technologies, techniques, and tools in the world of CNC machining.

Embracing the Future of Manufacturing

As industries evolve, so does the role of the CNC operator. With the advent of technologies such as Artificial Intelligence (AI) and the Internet of Things (IoT), CNC machining is bound to move towards more automation, accuracy, and efficiency. Be part of this transformation and lead the way to a promising future in CNC operations.

While we close, remember that the journey towards mastering CNC milling and turning operations is one of continuous learning, attention to detail, and relentless pursuit of precision. Employ these insights to turn into a skilled CNC operator, shaping the future of manufacturing.

cnc operator milling and turning cb

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.


  • Q1.Do you support ODM/OEM?

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

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