¿Cómo se puede utilizar el mecanizado CNC para la creación de prototipos en el diseño de productos?

CNC machines are categorized based on their capacity for simultaneous movement and rotation. They are divided into various types, such as 3-axis, 4-axis, and so on. For instance, in a 4-axis machine, it allows for concurrent movement along the x, y, and z axes, along with rotation around one additional axis, making it a versatile choice for a wider range of machining tasks.

CNC machining prototypes allows for true experimentation with fit, form, and function. It also allows for true measurement of other variables such as stress, weight, volume, etc. Producing prototype parts on a CNC machine can be far more expensive than a 3D printed version, but allows for true DFM (Design for Manufacturing) testing and problem solving potentially saving the customer a lot of time and money in the long run.

CNC machining has revolutionized prototype design, making it faster, more precise, and versatile. Precision and Accuracy: CNC machining delivers unmatched precision with tolerances as tight as a few micrometers. Rapid Turnaround: These machines operate round the clock, significantly reducing the time needed to create prototypes. Material Versatility: CNC machines can work with various materials, offering the flexibility to experiment. Complex Geometries: CNC machining can produce intricate and complex shapes, ensuring prototypes closely resemble the final product. Repeatable Results: Consistency is guaranteed. Easy Design Iteration: Modifying the design is a breeze; updates to CAD files to translate into updated prototypes.

Being in the product development I have used CNC machining is many ways during the design cycle but this is not the only process. With metal 3D printing having gained momentum and becoming more mainstream my choice of CNC parts for prototyping is limited to close tolerance parts only. For simple metal shapes CNC is still cheaper and quicker way to go but for more complex parts I find 3D printing to be better. For plastic parts I use 3D printing exclusively as the materials available are pretty close to what the actual injection molded parts will be and it is a lot cheaper to do this as compared to CNC operations. Also, 3D printers are cheap and affordable, just buy one and print on demand.

Cost and time are the main deterrents. Undercuts etc are not an issue, if it can be tooled, it can be CNC'd. With technology now a days the only time it makes sense to use CNC is when tighter tolerances and non complex shapes are required. This can be the whole part or certain surfaces of the part. I find using 3D printing of both complex metal and simple/complex plastic components for prototyping cheaper and quicker.

Prototype design holds significant importance, as it must strike a delicate balance between aligning with the final manufacturing design while remaining viable and feasible for CNC machining. In certain scenarios, opting for a hybrid approach, which combines CNC prototyping with traditional machining methods, can present an even more promising solution for achieving consistently reliable results.