CAPABILITIES

CNC Machining Service

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Tight Tolerances

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Parts as Fast as 2 Days

Tight Tolerances

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CNC Machining Capabilities

CNC Machining Materials

Typ. Lead Time:

Min Linear Tolerance:

TECHNOLOGY SUMMARY

What is CNC Machining?

What is CNC Machining?

CNC machining is a process of using computer-controlled tools to remove material from a workpiece. This can be done to create a variety of shapes and sizes, and is often used for creating prototype parts or small batch production runs. CNC machining can be used on a variety of materials, including metals, plastics, and composites. The process generally starts with a computer-aided design (CAD) file that contains the dimensions and geometry of the desired part. This file is then loaded into a CNC machine, which uses the information to control the movement of the cutting tools. CNC machining is a highly versatile manufacturing process, and can be used to create parts with complex geometries. It is also relatively fast and precise, making it an ideal choice for small batch production runs.

About the CNC Machining Process

CNC machining is a type of manufacturing that uses computers to control the machines and tools. The desired cuts are programmed according to corresponding parts, which perform this task in an automated fashion while also being able produce different shapes with relative ease due to computerized controls.

Types of CNC Machining

There are a variety of CNC machining processes, each of which is suitable for different materials and applications. The most common CNC machining processes include milling, turning, and drilling. Milling is an ideal process for machining materials that are difficult to machine using other methods, such as aluminum. Turning is well suited for machining round objects, such as shafts and spindles. Drilling is the preferred process for creating holes in workpieces. In addition to these three processes, there are a number of other CNC machining processes, such as sawing and grinding. Each of these processes has its own advantages and disadvantages, so it is important to select the best process for the specific application.

How Does CNC Machining Work?

The first step in CNC machining is to create a computer model of the desired part. This model can be created using CAD software or by scanning an existing part. Once the model is complete, it is fed into a CNC machine. The machine then uses a series of cutting tools to remove material from the workpiece, following the contours of the model. The finished part is then deburred and cleaned before being sent to the customer.

CNC machining is a complex process, but it offers a number of advantages over traditional manufacturing methods. It is more accurate and allows for greater complexity in design. Additionally, CNC machines can operate around the clock, without the need for breaks or downtime. As a result, CNC machining has become the go-to manufacturing method for many industries.

CNC vs 3D Printing

CNC machining is a subtractive manufacturing process, which means that material is removed from a larger block to create the desired shape. This is done using a variety of tools, including drill bits, end mills, and lathes. CNC machining is precise and can create complex shapes. 3D printing, on the other hand, is an additive manufacturing process. This means that material is added layer by layer to create the desired shape. 3D printers use a variety of materials, including plastics, metals, and ceramics. 3D printing is faster and less expensive than CNC machining, but it is not as precise.

CNC Design Considerations

When designing a part for CNC machining, there are a number of important factors to consider. The first is the material that you will be machining. Different materials have different properties that will affect the machining process. For example, some materials are harder than others and will require different cutting tools. In addition, the size and shape of the part are also important considerations. Parts that are too small or too large can be difficult to machine, and parts with complex shapes may require multiple operations to generate the desired finish. Finally, it is also important to consider the tolerances that you require for the finished part. Tighter tolerances will generally require more expensive and time-consuming machining operations. By carefully considering all of these factors, you can ensure that your CNC machined part meets your design requirements.

Our Quality Promise

All CNC-machined parts inspected using hand metrology, CMM, and/or laser scanners.

All parts manufactured & inspected at ProtoXYZ facilities.

Quality guaranteed. If a part is not made to spec, we’ll make it right.

Inspection report included with every order.

Tolerances

We follow ISO 2768 standards for CNC Machining. Tighter tolerances are available upon request.

Nominal Size

Plastics (ISO 2768-m)

Metals (ISO 2768-f)

0.5 mm ≤ x ≤ 3 mm

± 0.1 mm

± 0.05 mm

3 mm < x ≤ 6 mm

± 0.1 mm

± 0.05 mm

6 mm < x ≤ 30 mm

± 0.2 mm

± 0.1 mm

30 mm < x ≤ 120 mm

± 0.3 mm

± 0.15 mm

120 mm < x ≤ 400 mm

± 0.5 mm

± 0.2 mm

400 mm < x ≤ 1,000 mm

± 0.8 mm

± 0.3 mm

Plastics (ISO 2768-m)

Nominal Size

Tolerance

0.5 mm ≤ x ≤ 3 mm

± 0.1 mm

3 mm < x ≤ 6 mm

± 0.1 mm

6 mm < x ≤ 30 mm

± 0.2 mm

30 mm < x ≤ 120 mm

± 0.3 mm

120 mm < x ≤ 400 mm

± 0.5 mm

400 mm < x ≤ 1,000 mm

± 0.8 mm

Metals (ISO 2768-f)

Nominal Size

Tolerance

0.5 mm ≤ x ≤ 3 mm

± 0.05 mm

3 mm < x ≤ 6 mm

± 0.05 mm

6 mm < x ≤ 30 mm

± 0.1 mm

30 mm < x ≤ 120 mm

± 0.15 mm

120 mm < x ≤ 400 mm

± 0.2 mm

400 mm < x ≤ 1,000 mm

± 0.3 mm

CNC Machining FAQs

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What are ProtoXYZ’s stocked materials for machining?
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Why should I have my part machined rather than 3D printed?

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