CNC Turning Service In China

We specialize in providing high precision CNC lathe service. As a leading manufacturer in China, we guarantee competitive prices direct from the factory, and have 80 professional workers to ensure accurate execution of projects. Our services include high-precision machining (tolerance to ±0.005mm) for all production volume levels, and round-the-clock technical support to ensure all your needs are met.

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Best CNC Machining Factory

Our services are utilized to machine both the outer and inner cylindrical surfaces of disc or shaft components, also adept at handling the outer and inner conical surfaces with any taper angle, conical and cylindrical threads, and complex outer curved and inner surfaces. Beyond these applications, Our CNC turning capabilities extend to reaming, drilling, and grooving.

We process the tool trajectory, cutting parameters, displacement, auxiliary functions, and machining process route of the parts according to the program format and instruction code. This is specified by the Hokare CNC turning, which records the program lists contents.

Here at Hokare, we can produce the CNC turning based on your drawing and samples upon request. Just send us your layout and design and our designer will make your ideal turning parts accurately

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Hokare’s customized CNC Turning services play a key role in a wide range of sectors, especially in hydraulics, medical equipment, electrical motors and appliances, sanitary ware, valves, automotive and motorcycle, instrumentation and bearings.

CNC Turning: The Complete FAQ Guide     

In this guide, you will learn the fundamental aspects of CNC turning.

You will find everything in this guide if you want to learn about the working principle, necessary software, classification, custom CNC machining, or limitations.

Keep reading.

What is CNC Turning?

It refers to a manufacturing process where bars of materials are held and rotated in a chuck.

While at it, the tool is fed to the piece to remove the material, hence creating the desired shape.

CNC turning is a complex and detailed technique for creating custom parts and components using a lathe.

How does the CNC Turning Process Work?

It is an operation where the cutting tools move linearly and the workpiece rotates.

This rotation is performed using a lathe, and the turning process reduces the size of the workpiece.

During the CNC turning process, the material is established on a chuck and rotated at a given RPM.

As the workpiece rotates, sharp CNC turning tools are moved to the piece to remove unwanted material to create the desired shape.

It happens because the turning process is subtractive machining.

This leads to the creation of the final piece though the shapes often come out as cylindrical.

The lathes used in this process are either vertical or horizontal, depending on the tolerance and weight of the workpiece.

Is CNC Turning the same as CNC Lathing?

Mechanically, both these processes are similar as far as the actual manufacturing work is concerned. They only vary in a few conceptual elements, which include the following;

Efficiency – CNC turning is seemingly, more efficient in terms of production of parts than CNC lathe.

The former produces more parts within a specific period than the former.

Design – The CNC turning centers have one or more tool changers that are enclosed and can also use flood coolant. The lathe machines, on the other hand, have a single tool changer but

Expense – CNC turning is quite expensive since the machines involved can produce several parts within a fixed duration.

In contrast, a CNC lathe is relatively affordable since it is comparatively less efficient than CNC turning.

In essence, the major difference between these two processes is CNC turning tends to be more expensive, powerful, and heavier.

CNC lathing, in contrast, allows basic machining operations to be carried out on a conventional lathe.

Why should you Consider CNC Turning?

High production – This technique executes high volume and, at the same time affords flexible scalability.

You only need to ensure the design specifications and parameters are entered into the CNC machine accordingly.

Higher precision – This method uses a digital template and autonomous machining of CNC to eliminate any form of human error. It achieves a high accuracy within 1/1000th.

Reliability and endurance – Most modern CNC turning centers tend to work around the clock, even during weekends and holidays.

The only instance they halt operations is when there is a need for repair and maintenance. It thus shows the process offers high reliability and constant endurance.

Low maintenance – The system uses software, which continually updates automatically when needed. The machines for this task also rarely require in-depth service apart from changing a few cutting implements with proper intervals.

Production efficiency – This process produces uniform pieces with zero variance.

Each part perfectly matches the exact specifications of its prototype.

Safety operations – Consistent pieces and an expedient production process come along with a safer environment.

Operators are distant away from sharp tools hence reducing incidents of possible injuries.

Less labor – CNC turning requires a few personnel to implement the required production tasks. One skilled programmer can load all the machines with the required designs.

Also, one operator can administer a wide range of autonomous CNC turning centers alone.

Cost-effective – The collective result from less labor, precision, specialization, efficiency, and high speeds leads to reduced costs. This is vital as it allows you to create a competitive advantage and a higher profit margin.

How does CNC Turning compare with CNC Milling?

CNC turning utilizes computer-controlled machines to form a different final product.

The process herein uses a single-point cutting tool, which inserts into the material cut.

CNC Turning

In CNC turning, the material rotates at changing speeds and cutting tool cutting transverses, thus forming cylindrical cuts with precise measurements.

It is common to create tubular or circular shapes from comparatively large materials.

Furthermore, it is an automated process with the possibility of adjusting speeds to attain great accuracy rather than turning a lathe by hand.

CNC Milling

In contrast, CNC milling utilizes commands and codes programmed into the system and set to run.

It involves cutting a material using a milling cutter to remove the material surface by advancing in a direction at an angle.

The mill cuts the materials by drilling and turning along the axes depending on the dimensions set into the computer.

You can control CNC milling machines either by a computer or by manual override.

Computer programming enables the machines to make precise cuts.

Users can also override the machines manually as a way of slowing or speeding up the process.

What are the Types of CNC Turning?

The primary types of CNC turning include the following;

Taper turning – It is a type, which forms a cylindrical shape with a gradually decreasing diameter.

Grooving – It is carried out whenever a shaped tool is pressed into the workpiece gouge to allow it to form a narrow cavity.

Parting – It is the type used to gouge deep into the workpiece to remove a finished piece from the original stock piece.

Facing – It involves shifting the cutting tool at right angles to the axis of rotation of the rotating workpiece.

Straight – It is the type, which reduces work diameter into a constant motion to prevent variation in work diameter cut. It is also referred to as cylindrical turning.

Threading – It involves cutting in a helical path to create grooves, which can be screwed into other objects.

Spherical generation – This is attained when a program makes a form around a fixed axis of revolution. It can also be done when a particular semi-circular tool is utilized to lower the diameter to zero to create a perfect sphere.

What Parts Need CNC Turning?

They are numerous and cut across a wide range of sectors, and they include the following;

  • Gun barrels
  • Crankshafts
  • Baseball bats
  • Bushing
  • Fittings
  • Musical instruments
  • Cue sticks
  • Camshafts
  • Table and chair legs
  • Spacers
  • Manifold

How much does CNC Turning Cost?

There are a lot of factors to take into account when determining the cost of CNC turning.

It thus makes the final cost assessment a bit difficult since you need to factor in the prevailing factors.

For example, you need to determine the material usage, geometry, and cutting time into account.

The pricing also comprises labor, tool wear, tooling, machine cost, and setup.

It can be difficult to attain precise assessment for each parameter.

The price tag is also dependent on time consumption since all factors herein are directly related to it.

In a nutshell, there is no specific or fixed amount for CNC turning.

It depends on various parameters, which must be taken into account to determine the actual price.

And it is one of the major reasons the vendor may take a bit of time before providing you with a quote for a project.

What are the common Materials used for CNC Turning?

CNC turning uses a wide range of materials, which include the following;

  • Aluminum
  • Bronze
  • Carbon and alloy steels
  • Brass
  • Stainless steel
  • PVC
  • Polycarbonate
  • ACETAL
  • PTFE
  • Titanium
  • Acrylics
  • ABS

Is there MOQ in CNC Turning?

The MOQ depends entirely on the policies of a particular manufacturer you are seeking this service.

Some have a high MOQ, whereas others offer a relatively low MOQ.

In general, an ideal manufacturer will always provide flexible MOQ depending on the material type used.

The bottom line, however, is to ensure you inquire regarding the MOQ before sealing the production deal.

What Quality Approvals Does CNC Turning Comply with?

They are quite several and include the following;

ISO9001 – It refers to an international standard which specifies requirements for quality management systems.

It demonstrates the organization’s ability to manufacture products which meet regulatory and customer requirements.

PMPA – It is an acronym for Precision Machined Products Association.

It designs and regulates policies safeguarding and representing the interests of precision machine products.

API Q1 & Q2 Certification – It refers to an international standard that outlines requirements and provides recommendations for various parameters.

These parameters include performance, dimensional, design, materials, dimensional and functional interchangeability.

ASTM International is a standard agency that creates and publishes voluntary consensus technical parameters for systems, products, and services.

What are the Determinant Features of How CNC Turning Machines Works?

The workpiece or part is clamped and then rotated by the main spindle.

The cutting tool working on the material is mounted and moved in various axes.

The rotation takes place using a lathe, and the turning process reduces the diameter of the workpiece.

This often determines the length and provides an ideal smooth finish for the part.

During the CNC turning process, materials such as plastic, wood, and metals rotate with a computer numerical control program.

The bar length varies depending on the bar feeder. This determines the intensity of handling required for volume tasks.

CNC turning centers come with tooling mounted on a turret, and they are computer-controlled.

It thus implies the more tools a turret can hold, the more options it provides for part complexities.

CNC turning centers have different tooling options, outer diameter limitations, spindle options, speed, and power capabilities.

All these aspects affect the types of parts that can be economically made.

Some CNC turning machines have a single spindle, allowing all work to be carried out from one side.

In contrast, some have two spindles: main and sub-spindle.

In this case, a workpiece can be partially machined first on the main spindle and moved to the sub-spindle.

Is there a Standard Tolerance in CNC Turning?

The standard tolerance in CNC turning for any dimension is ± 0.125 mm.

However, features with tighter tolerance down to ± 0.050 mm can also be created. Furthermore, tolerances of ± 0.025 mm can still be feasible.

Which Sectors Benefit from CNC Turning?

CNC Turning Machine

CNC turning is utilized in a wide range of industries for various applications. The notable ones, however, include the following;

Medical industry – It is one business that requires precision and high volume to meet certain needs of the facilities.

Some parts created through CNC turning for medical practice include MRI machines and research equipment.

Medical instruments, electrical parts, and orthotic devices are also among such parts.

Electronics industry – It is used in creating different types of small components used in the electronics industry.

Heat sinks, insulators, radio frequency interference protection, and electrical insulation are some of the parts in this sector.

Marine sector – CNC turning helps create different components for boats, particularly those requiring a perfect fit with others.

Examples of these parts include propellers, boat parts, engine components, prototype molds, and insulating cases, among others.

Military – It comes in handy for designing and producing parts in the military for purposes of communication and defense.

Some of the parts include communication components, plane parts, transportation components, and electronics.

Automotive sector – Most automobile parts are created using CNC turning. They include shafts, bushings, fittings, and spacers, among others.

Transport industry – Some parts that may require CNC turning to construct include freight trains and shipping vessels.

18-wheel trucks, passenger rail, and cargo planes also use parts made from CNC turning.

What types of software do you use for CNC turning?

Several types of software are available for different kinds of CNC turning results.

You need to be particular to attain desirable results.

You can find some for free, but you can also purchase others. Some of the notable options to choose from include the following;

Rhino3D – You can use it to create, edit, and render solids, surfaces, curves, and polygon meshes. It comes with a free 3D modeling tool and complete accessibility and accuracy.

AutoCAD is a popular option that is often used to create 2D and 3D drawings.

It is used in different industries, thus its popularity among users.

SolidWorks – It is a parametric feature-based 3D software used for modeling.

You can also use it for auto-generated 2D and 3D modeling drawings.

NanoCAD – You can draw 2D, 3D, and parametric designs.

In essence, you can use this software to build any component, ranging from machine components to blueprints.

Wings3D – It is a tool designed for creating 3D models, which are, in turn, imported to a CAM program.

Google Sketchup – It is not necessarily a CAD program but allows you to produce 3D drawings. You can integrate it with a CAM program to create G-code.

Does CNC Turning have Design Limitations?

Yes.

The design limitations of CNC turning result from the cutting process’s dynamics. Such restrictions revolve around the following elements;

Tool access – If a cutting tool cannot reach a particular surface, it cannot be CNC-turned. It prohibits the fabrication of parts using hidden internal geometries.

It thus places a limit on the maximum depth of an undercut.

Work holding – The geometry of the final part determines how it shall be held at the CNC turning center.

It also influences the number of setups required. Of course, this has an effect on cost as well as the accuracy of the component.

Tool geometry – Most CNC turning tools are cylindrical with a flat or spherical end. This limits the number of part geometries which can be produced.

Tool stiffness – The cutting tool can vibrate or deflect during turning. This can lead to tool breakage or loose tolerance.

And it even worsens when the length-to-diameter ratio of the cutting tool increases.

For such reasons, it becomes difficult to easily CNC turn deep cavities.

Workpiece stiffness – Workpiece tends to vibrate or deform due to cutting forces and temperatures developed during CNC turning. It thus limits many aspects, such as wall thickness.

Is CNC Turning Friendly to the Environment?

Yes.

It plays a significant role in turning the environment greener.

This process uses modern machines, which are eco-conscious.

They utilize advanced technology, which goes a long way to prevent environmental degradation.

CNC turning also enables you to integrate different processes and operations.

And this goes a long way in making sure the environment remains clean.

What Factors do you Consider when Choosing CNC Turning Company?

Some of the critical aspects to look into when selecting an ideal CNC turning company include the following;

· Advanced Technology

This technique involves the use of computers to control machine tools in manufacturing.

All these tools are programmed and encoded using computer software.

Therefore, you must ensure you are going for a company which utilizes the latest CNC turning technology.

It helps bring significant improvements and efficiency to production. It also helps keep costs relatively low.

· Technical Support

Disruptions and technicalities in CNC turning centers and systems are inevitable.

Choosing the right company prepared for such occurrences gives you faster production time.

It also makes it easy to control losses and, at the same time, lowering production costs.

Therefore, go for a company with adequate resources and great support for handling technicalities.

· Workpiece Material

Different CNC turning centers are designed for various materials.

In the same regard, different companies tend to deal with other materials depending on their capabilities.

Production factors and resources also determine the type of workpiece material a specific company prefers.

Thus, confirm whether your preferred company deals with a specific type of material you’re looking for.

Can you get Custom CNC Turning?

Absolutely yes.

Most of the companies providing this service offer flexibility in terms of customizing the CNC turning parts.

CNC Turning Machine

You need to provide a prototype of your part to the company.

The designers and operators will customize it to fit your particular requirements.

What Surface Treatment can you apply to CNC Turning Products?

The common ones you’re likely to come across include the following;

As machined – It is the natural finish you obtain once the part is completely turned.

It has minor visible tool marks with a standard surface roughness of (Ra) 3.2 μm.

Nevertheless, you can always increase this surface finish requirement to 1.6, 0.8, and 0.4 μm.

Powder coating – It is a type of finishing which adds a wear and corrosion coat to the surface of the components.

It offers higher resistance to impact compared to other types, such as anodizing. It is available in a wide range of colors, and you can apply it to any metal.

Bead blasting – It appears as a matter finish with a relatively light texture.

It is attractive and, hence, ideal for visual reasons.

Anodizing Type II – It is also referred to as a clear color finish. It adds ceramic, wear, and corrosion-resistant layers to the part’s surface.

You can dye it in different colors.

Anodizing Type III is also known as a hard coat, relatively similar to a clear color finish, but this one offers greater protection than Type II.

How Long does CNC Turning take?

There are a lot of variables that determine the exact duration CNC turning can take from one project to another.

The size of the project is one factor that determines the routing time.

The time will be a bit longer for relatively large projects than for an average project.

The simplicity or complexity of the design is another factor that influences the routing time.

Simple projects do not require much time, whereas complex designs will consume relatively more time.

In a nutshell, estimating the actual routing time for CNC turning is a bit difficult.

Nonetheless, the moment programming is worked out, and a workpiece is ready for CNC turning center, it will be faster to accomplish.

Typical lead times, however, range between 5-6 weeks.

However, there is always an option for expediting the process to shorten the lead time to four weeks.

But you have to pay a premium to that effect.

What are the Shortcomings of CNC Turning?

Costly – CNC turning centers are relatively expensive and require higher initial investment than manually operated machines.

Reduced employment – Since the operations of this machine are automated, it means there will be a need less human labor.

A single skilled operator is enough to handle several autonomous CNC turning centers without assistance.

Skills loss – This leads to decreased demand for manual machine operators since most aspects of this process are automated.

This leads to gradually losing long-preserved skills since the number of students adopting the same reduces.

Operator error – The operator has substantial control over the precision of the CNC turning center.

It thus means any error the operator makes can lead to accuracy issues on the machined part or program used for creating it.

How do NC, CNC, and DNC Machines compare?

NC machine tools are those in which numbers, letters, and symbols control numerous functions.

It runs on a program fed to it automatically without input from human operators.

In contrast, a CNC machine uses a dedicated computer as a machine control unit to perform most of the primary NC machine functions.

On the other hand, DNC is a system where a computer controls different machines through a direct connection in real time.

Here’s how these three machine tool systems compare;

· Feeding Module

In the NC machine tool, the part program is integrated into the system through tapes and similar media.

In CNC, the program is fed into the system through a computer.

By contrast, a part program in the DNC machine system is fed through the main computer.

· Modification

Modification in the NC machine tool requires changing tapes, whereas, in CNC, you can easily attain it with the help of a computer.

In DNC machines, modification is attainable through the use of a single computer.

· Memory

In the NC machine tool, the tape reader forms part of the machine control unit.

In CNC, however, a microprocessor is part of a control unit and does not require a tape reader.

On the other hand, DNC has a large memory, enabling it to store many part programs.

The NC system does not have memory storage; hence, it runs using tape.

CNC systems have memory storage capabilities for storing part programs.

In the DNC system, the same part program can run on a different machine at any given time.

· File Importation

NC machine cannot import CAD files, whereas CNC system can import CAD files and convert them into part programs.

On the other hand, you can process data in the DNC system using MIS software to carry out production planning and scheduling effectively.

· Feedback

NC machines cannot use a feedback system, unlike CNC machines, which can fully utilize the feedback system.

In essence, the former is not software-driven compared to the latter, which is software-driven.

At Hokare Machinery, we offer the perfect solution for all your CNC turning needs.

Contact us today for high quality and cost-competitive CNC parts.

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