CNC machining, called “computer numerical control”, is a recognized and widely used machining technique in all high-tech industrial sectors. What are the advantages of this industrial production technology?
Speed, reliability, precision and robustness, why is CNC machining a cutting-edge technology?
CNC milling and turning are processes for manufacturing parts by removing material. These production technologies allow high levels of precision and repeatability of operations. Machines can be programmed to operate reliably 24/7 if required. CNC milling is an ideal solution for producing parts (simple or complex) on demand.
CNC low volume machining offers great production flexibility, making it possible to produce single parts (prototyping), in medium series or in large series. The manufacturing time of a part can vary according to the quantity, the size or the expected complexity.
CNC technology also makes it possible to work with a large number of materials while maintaining their mechanical properties. More than 50 industrial grade metals, alloys and plastics can be machined by CNC milling and turning. FIDEMECA, specialist in CNC bar turning , has developed real know-how in the machining of noble and difficult materials such as the different shades of stainless steel, titanium, aluminum, steel, inconel , pure iron, plastics or copper alloys.
CNC machining: how to control costs?
To obtain the most cost-effective CNC machined parts, it is recommended to produce large series. Thus, the unit price gradually decreases until it stabilizes. The cost will also vary depending on the method used (3 or 5 axis machining). 3-axis CNC milling is generally the cheapest method for manufacturing uncomplicated parts with high tolerances.
CNC turning on a lathe is also a very competitive process when cylindrical parts such as threaded rods and shaft couplings are required.
5-axis CNC machining can be indexed or continuous. In the case of indexed milling, the part is automatically positioned to allow the tools to perform the first milling operations. Additional movements are made between milling steps without removing the part from its support.
In the case of continuous milling, the machine can move simultaneously in all directions while cutting the part.
Both of these 5-axis processes eliminate the added cost and potential human error of manually repositioning a part. Because of these advantages, 5-axis machining is the best solution for complex components but still more expensive than conventional 3-axis CNC milling.
What are the key controls for quality design?
CNC low volume machining is the best manufacturing method when you need simple parts with tight tolerances, excellent mechanical properties, and scalable low-volume production. To make the most of each of these strengths, you need to consider several key factors during the design process.
