In many of the industries we serve here at US Machine and Tool, precision and accuracy are vital, including aerospace, construction, and energy. CNC machining allows these industries to receive components that will meet their standards all while offering numerous advantages over traditional machining methods. For procurement managers and engineers alike, understanding these benefits is key to making informed decisions about production methods.

What Is CNC Machining?

CNC machining is an automated manufacturing process in which pre-programmed software directs the movement of tools and machinery. Equipment such as mills and lathes are controlled via computer code, enabling precise, repeatable, and efficient shaping of raw materials. 

This contrasts with traditional machining, which relies heavily on manual operation, requiring constant oversight and physical adjustments by skilled operators. 

How CNC Machining Outshines Traditional Methods

1. Precision and Consistency

One of the most significant advantages of CNC machining is its precision. With tolerances as tight as ± 0.00025”, CNC machines can create highly accurate parts that meet exact specifications. This level of accuracy ensures consistency across production runs, which helps eliminate variations common with manual/ traditional machining. The repeatability of CNC machining also reduces the risk of defects, ensuring that every part meets quality standards, even in large-scale production.

2. Efficiency and Speed

CNC machining drastically reduces lead times compared to traditional methods. Once the design is programmed, the machine can produce parts continuously with minimal downtime or need for manual adjustments. If adjustments to the design are needed, they can also be made quickly, making CNC machining particularly well-suited for repetitive and rapid prototyping. 

For example, a team can use CNC machining to create and refine prototypes faster than traditional methods would allow.

Cost Advantages of CNC Machining

1. Lower Labor Costs

Automation plays a key role in reducing labor costs. Unlike traditional machining, which requires skilled operators to manually guide tools, CNC machines operate with minimal supervision. 

2. Shorter Production Times

Because CNC machines operate continuously without breaks, they significantly reduce production time. Faster production translates into lower overall costs, particularly for large-scale manufacturing runs where efficiency is critical.

Production time is also shortened, due to the minimal setup. Unlike metal stamping, where custom dies must be built, CNC machining is based on code, so minimal part fixturing is required to start production. 

Applications and Material Versatility

1. Wide Range of Materials

CNC machining can handle a variety of materials, from metals like aluminum, steel, and titanium to plastics. This versatility makes it an ideal solution for industries with diverse material requirements.

2. Industries That Rely on Precision

Certain industries demand high accuracy, and CNC machining can deliver it. Aerospace, medical, and construction sectors, for example, depend on CNC machining for components like turbine blades, and surgical instruments, where even the smallest deviation can compromise performance or safety.

Things to Consider Before Switching to CNC Machining 

While CNC machining has its advantages, there are a number of things to consider before making the switch, such as: 

• Production Volume – CNC machining offers significant cost advantages for both low and high-volume production runs.
• Design Complexity – The complexity and requirements of each design will have a large impact on the machining process you choose. The best way to make this decision is to consult an expert and discuss the process together. 
• Material Requirements – Assess whether the materials you’re working with are compatible with CNC machining or if other methods are a better fit for your materials. 
• Consistency Needs – If your project requires tight tolerances and consistency, CNC machining is a clear choice. 

CNC machining has changed the metal fabrication industry by revolutionizing how custom parts are produced. The method’s precision and efficiency make it a great fabrication solution for a number of industries. Learn more about leveraging CNC machining and US Machine & Tool’s capabilities by emailing us at sales@usmachineandtool.com.