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The Art of CNC Finish Turning: A Comprehensive Guide

CNC (Computer Numerical Control) technology has revolutionized the manufacturing industry, providing precision, speed, and consistency. One of the vital applications of CNC is in the area of finish turning. This in-depth look at CNC finish turning will guide you through its intricacies, benefits, and applications.

Grasping the Basics of CNC Finish Turning

CNC finish turning is a process adopted in the manufacturing industry to produce parts with a high degree of precision. It involves a cutting tool used on a rotating workpiece to remove the undesired material and achieve the final automotive or mechanical part. With computer programming's intervention, this method creates parts with exact specifications accurately time after time.

The Significance of CNC Finish Turning

Precision is the cornerstone of numerous industries. Industries such as automotive, aerospace, medical, and military require components produced with high accuracy levels. CNC finish turning is a crucial process in delivering such precision. It ensures the parts' fine details are not lost, achieving high surface finish quality. Notably, CNC finish turning is also efficient for large scale production.

Machines Used in CNC Finish Turning

CNC finish turning operations are carried out by a variety of machinery. The CNC lathe, for instance, is prominent in this process. Installed with a sharp cutting tool, the lathe handles the workpiece held in place by a chuck. As the workpiece rotates, the cutting tool removes excess material, shaping the workpiece as per the programmed guidelines.

Moreover, multi-axis machines have also gained popularity in CNC finish turning. They offer greater flexibility by operating on multiple axes concurrently, which allows for complex shapes and intricacies to be turned more efficiently.

The Process of CNC Turning

CNC finish turning requires a particular set of steps to attain precision. They include programming, setting up, selecting the right cutting tools, and monitoring the operation.

Programming is the paramount phase in this process. It involves feeding the designated measurements for the specific part into the machine*s computer system.

The configuration phase includes securing the workpiece onto the chuck and positioning the cutting tools. The precision of these settings impacts the quality of the finished product.

Selection of the right cutting tool is another crucial factor. The tool's material, geometry, and size impact the speed, feed, and depth of cut, which influence finishing quality.

Lastly, monitoring the operation to ensure that everything is working as expected is essential. This not only guarantees precision but also extends the lifespan of the machine and cutting tools.

CNC Finish and Surface Quality

The quality of the surface finish is predominantly determined by the turning process parameters, such as cutting speed, feed rate, depth of cut, and the properties of the workpiece material.

Selecting an appropriate feed rate is vital. A slower feed rate often results in a finer surface finish. Conversely, a fast feed rate could result in a rough surface.

Similarly, the depth of cut impacts roughness. A greater depth of cut might lead to a poorer finish because of the increased rate of tool wear.

Lastly, workpiece material properties affect how it reacts to cutting forces, thus influencing the finish. Selecting the right tool material for the application minimizes wear and tear and guarantees a better surface finish.

The Versatility of CNC Finish Turning

CNC finish turning is not confined to one sector or application. From creating car parts to intricate components for clocks, CNC finish turning has proven to be an indispensable technique. Automating the process has only extended its benefits, allowing industries to streamline their production processes while maintaining consistent quality.

In every aspect of its utilization, CNC finish turning remains a critical component in advanced manufacturing processes. Its flexibility and the ability to operate with precision make it a fundamental tool in any production setup. Its understanding and appropriate use are integral to excelling in the manufacturing industry.

Whether you are an industry expert, an enthusiast, or someone on the learning curve, the insights gained through understanding CNC finish turning are invaluable. Appreciate its subtle nuances and embrace its powerful significance, and you will find yourself a step ahead in the manufacturing world.

cnc finish turning

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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