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CNC milling is a specialized form of precision machining that uses computerized controls to operate machine tools. While both CNC machining and precision machining involve the creation of high-accuracy parts, they differ in several key areas.
Precision machining refers to a broader set of techniques used to produce components with extremely tight tolerances, often below 0.01mm. It includes manual and automated methods, and is typically used for complex, high-precision parts. CNC milling, on the other hand, is a specific type of precision machining that relies on computer numerical control to guide the movement of cutting tools.
One of the main differences between the two is the level of precision they can achieve. Precision machining is capable of producing parts with tighter tolerances and smoother surface finishes than standard CNC machining. Surface finish is usually measured in Ra (roughness average), and precision machining can reach much lower values.
Another key difference is the role of human operators. In precision machining, skilled machinists may use both manual and CNC techniques, while general CNC machining relies almost entirely on automated systems. This makes CNC milling more consistent and less dependent on operator skill.
Batch size also plays a role. CNC machining is ideal for large-scale production runs, while precision machining is often used for low-volume or custom jobs. For small batches under 50 pieces, traditional precision methods might be more cost-effective.
Complexity is another factor. Precision machining is better suited for intricate parts that require multiple operations like drilling, milling, and grinding. Simple parts can usually be made using standard CNC processes.
Repeatability is another advantage of precision machining. Since it reduces human error, it ensures greater consistency across different production runs.
If you need high-precision parts, whether for prototyping or mass production, Cheetah Precision has the expertise to deliver. Our advanced multi-axis CNC mills and experienced technicians are ready to handle even the most demanding projects. Contact us today to learn more about our capabilities.