CNC machining, like any other production technique, has its own set of design requirements and rules. Precision components and products can be produced in many industries using the subtractive manufacturing approach, but there are advantages and disadvantages to this technology that should be considered during the design phase as well as while it is being used in production.
There are a few things to keep in mind while designing CNC-machined parts: One might be thankful for the many. For rapid prototyping and production, CNC machining is extensively utilized because it can quickly create accurate, high-quality parts from a wide range of metals and plastics. To help product designers come up with better part designs, let's take a look at some of the most important design opportunities available.
Possibility of repetition
In the design phase of a CNC machined object, there is no need to be concerned about human error. It is possible to obtain excellent repeatability with CNC machines because of their automation and powerful computer software. This means that you can be sure that your product is manufactured accurately and consistently every time. As a product designer, you can see exactly what your product will look like and how it performs through this method.
• Detachment and attention to detail
As well as being precise and repeatable, CNC machining allows for sophisticated and elaborate components to be manufactured. Increasing design freedom is now possible thanks to modern CNC equipment, such as 5-axis CNC milling and turning. Engraved details or lettering can also be included into a product's design, which can be done with incredible precision. If a part is intricate or elaborate, it may take longer to machine and thus cost more than a simple part.
Computer Numerical Control (CNC) Design Restrictions
However, while considering the possibilities for design, keep in mind that CNC machining has some limitations as well. For both the machine operator and the client, the entire manufacturing process can be made smoother if these limits are taken into mind throughout the design phase.
Radius of the Internal Organs
For the CNC machining process, part designs should have at least a 1mm internal radius around the edges because of the equipment utilized. By using rounded internal corners, the tool may move in an even, round path, which results in an improved surface polish. The greater the internal radii may be, the better, as it enables for more material to be taken away at once, resulting in faster machining times when appropriate.
There are also nooks and crannies.
With features like cavities or pockets, it's vital to think about the CNC machine's tooling. Typically, end mills have a cutting length of 3 or 4 times their diameter, which makes them ideal for milling. This means that to ensure machinability, cavities and pockets in your product should have a depth of up to three times the end mill's diameter. A shallower cavity reduces tool vibrations and deflection, which improves the quality of your finished product if you adhere to this design rule.