Large CNC Machining: A Complete Guide to You

In today's rapidly evolving industrial landscape, the demand for large-scale machining solutions has grown significantly. Large CNC machining refers to the process of using computer-controlled machines to fabricate complex and sizable components for various industries. Whether it's aerospace, automotive, or construction, large CNC machining plays a crucial role in meeting the requirements of diverse sectors.
What is Large CNC Machining

Most CNC machining services are only equipped to handle light- to medium-duty projects, which can leave you stuck when you have a big job to do. Large CNC Machining is here to help.

Large parts CNC machining is a type of CNC machining that involves the use of large machines. These machines are typically used to create parts for large parts, vehicles, and other large objects.

This blog post will explore large parts machining and its precautions and applications. Stay tuned!

What Is Large CNC Machining?

Large CNC machining using computer numerically controlled (CNC) machine tools to remove material from heavy workpieces. This machining is typically used to create large, complex parts and structures that would be challenging or impossible to produce using traditional methods.

The size of the part dictates the size of the CNC machine, which can range from a small benchtop model to a massive structure that occupies an entire factory floor.

large CNC machining in China

Cautions For Large Parts CNC Machining

CNC machining is a complex process that requires precision and care. There are some cautions you need to take when performing this type of machining, particularly if you are working with heavy materials.


CNC machine tools can be huge and heavy, making them difficult to move and requiring a large workspace. When choosing a workspace for CNC machining, it is essential to consider the size and weight of the machines. The workspace should be tall enough to accommodate the height of the machines and wide enough to allow for easy movement.


In large CNC machining, the material is removed by rapidly moving a cutting tool across the surface of the workpiece. The high speeds and forces can generate a significant amount of heat, which can cause the workpiece to deform.

To prevent this, manufacturers often use coolants or lubricants to dissipate the heat and keep the workpiece cool. They may also use special techniques to avoid generating too much heat, such as using different cutting tools or altering the speed of the cut.


When performing heavy CNC machining, it is vital to take measures to support the workbench. Otherwise, the enormous weight of the machined material could cause the workbench to collapse.

One method to do this is to put a wood block under the workbench. This will help distribute the weight evenly and prevent the workbench from tipping.

Another option is to use a metal stand. This will provide more sturdy support for the workbench but add more weight to the overall setup.

Regardless of your choice, ensure the support is secure and won’t shift during the machining process.


Because of the large volume of material that is being machined, there is a greater risk of collisions. To prevent this, the CNC machine must be properly calibrated. And the operator must have a good understanding of the project and maintain control of the machine throughout the process.

High Pressure

Large parts machining exerts tremendous pressure on the materials being worked on. This can cause the materials to lose their shape or even break. 

To prevent this, it is essential to use high-quality materials designed to withstand high-pressure levels. And the pressure must be evenly distributed across the material’s surface to avoid weakening or damage.

Loading Tools

Large parts CNC machining makes it difficult for humans to move bulky materials. So, a loading tool is essential for efficiently loading and unloading parts.

The tool helps to securely grip the workpiece, allowing it to be moved without damage. And it can quickly release the workpiece when it is in the proper position.

Without it, the process would be significantly slowed down, and there would be a greater risk of damage to the workpiece.

Use CNC Router

One of the most significant benefits of CNC routers is their large working envelope. This means they can usually handle larger parts than other machining equipment. CNC routers are also extremely precise, making them ideal for high-accuracy tasks.

What is Large CNC Machining


A big fly cutter can smooth large materials in large component machining. The fly cutter is a circular cutting tool with multiple blades that rotates on a spindle. This cutter is ideal for machining large materials because it can make very smooth cuts.

When choosing a fly cutter, it is vital to consider the size of the material and the type of finish you want. If the cutter is too small, it will not be able to cut through the material. If the cutter is too big, it will create a lot of vibration and damage the material.

Equipment For Large CNC Machining

Transport Equipment

In heavy machining centers, the large processed materials require special transport equipment to move them into the processing area. This transport equipment can include cranes, hoists, and conveyors. Once the material is in the processing area, it can be laser cut, shaped, and finished using various methods, including lathing, milling, and drilling. 


A shaper is a machine used for large machining. It is a large, powerful machine capable of removing large amounts of material from the material.

Shapers typically create flat surfaces but can also create shapes and contours. Shapers are very versatile machines and essential to many manufacturing operations.

Grinding Machine

A grinding machine uses abrasive wheels to remove material from the material.

The grinding wheel is mounted on a spindle and rotates at high speed, removing material from the workpiece as it passes. The grinding process will generate lots of heat, so coolants are typically suitable for keeping the workpiece and tools from overheating.

Grinding machines can remove excess material from a workpiece, create a smooth surface finish, or create a desired shape or contour.

Applications of Large CNC Machining

A. Aerospace industry

The aerospace industry heavily relies on large machining for the production of large aircraft components. From wing structures to engine parts, CNC machines can accurately fabricate complex and critical components with high precision and reliability. Heavy CNC machining ensures the tight tolerances required for aerospace applications, enabling the industry to meet strict quality and safety standards.

B. Automotive industry

In the automotive industry, large CNC machining plays a crucial role in the production of complex engine parts. Cylinder heads, engine blocks, crankshafts, and camshafts are just a few examples of components that require precision machining.

C. Energy sector

Turbine blades, generator parts, and large-scale gear systems are among the components that benefit from CNC machining’s accuracy and repeatability. Large CNC machines enable the energy sector to produce reliable and efficient equipment for electricity generation.

Choosing a Reliable CNC Machining Service

To leverage the benefits of large CNC machining, it is crucial to partner with a reliable CNC machining service. When selecting a provider, consider factors such as their experience, expertise, technological capabilities, quality control measures, and adherence to project timelines.

A reputable service provider will offer comprehensive solutions, tailored to your specific requirements. We are a professional China provider of CNC machining services, including milling, turning, wire EDM machining, 5-axis machining, and Swiss machining. Contact us for custom CNC machined parts.

large parts CNC machining


We hope that this blog post has helped you gain a better understanding of Large CNC Machining. Please visit our homepage if you have any questions or want to learn more about our services. Alternatively, you can leave a comment below, and we will get back to you as soon as possible. Thank you for reading!


What Types Of Components Can Be Manufactured Using Heavy CNC Machining?

Heavy CNC machining can manufacture a wide range of parts, such as large aircraft parts, and complex engine components. Also includes power generation equipment, heavy construction machinery parts, mining equipment, ship components, and more. It is capable of creating intricate geometries and meeting stringent tolerances.

What Industries Benefit From Large CNC Machining?

Industries such as aerospace, automotive, energy, defense, and marine benefit from large CNC machining for the production of oversized components and complex parts.

How Accurate Is Large CNC Machining?

Large CNC machining offers exceptional accuracy, thanks to advanced control systems and calibration processes. It can achieve high tolerances, ensuring precise and reliable manufacturing.

Can Large CNC Machines Handle Different Materials?

Yes, large CNC machines can work with a wide range of materials, including metals, plastics, and composites. The material selection depends on the specific application requirements.

What Is The Cost Of Large CNC Machining?

The cost of large CNC machining depends on various factors, such as the complexity of the parts, material selection, machine size, and project specifications. It is best to consult with a CNC machining service provider for accurate cost estimates.

How Can I Find A Reputable CNC Machining Service Company?

To find a reputable CNC machining service company, consider factors such as experience, expertise, technological capabilities, customer reviews, and adherence to quality standards. Referrals and recommendations from trusted sources can also be valuable in the selection process.

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