CNC machining is the process of producing metal and plastic parts that require drilling or cutting. CNC CAD machining is a cost-effective and economical method of producing these parts. You can now make it according to your specifications via CAD software.
To ensure quick delivery to market, it is essential autocad to get your CAD design perfect. This will prevent revisions and rework.
Tips to Improve your CAD Designs for CNC Machining
These guidelines will help you improve the quality of your style and make it more affordable.
Features for CNC Design
CNC machine’s machining process is complicated if you add features that are not needed. It is important to study the capabilities of the CNC machine before adding any features that have no influence on the functioning of the component.
Curved holes are a prime example of a feature that CNC machines, lathes and drills can’t produce. If you are not adding these features to enhance the appearance of your product, you should take it off the list.
Make sure you are 100% accurate in your depth-to-width ratios
A more extensive cavity can make CAD designs more complex.
Deep cavities are defined as the ones that are six times bigger in diameter than the tool. They must be at least four times wider than the width. A cavity 15 mm in width cannot be more than 60 mm deep.
Do not use a tolerance that is too high.
It is important to maintain strict tolerances. However, excessive tolerating can increase the time of machine operation and cost. Different CNC machines have different tolerance specifications. The machine will adjust itself to the standard tolerance in the event that your dimensions do not fall within its tolerance range.
Do not use tight tolerances to reduce time and cost. You must have homogeneous tolerances so that you can reduce the time spent setting up the machine.
Radii used to design the edges of the inside
The majority of cutting instruments are cylindrical and are unable to making sharp edges. You should radius the edges of the CAD file.
It is important to plan the internal edges of the CNC machining tool so that it doesn’t get too stressed. To do this, you need to increase the radius of the milling machine by 130%..
Avoid redundant aesthetics
Think about the material that will be removed and the process involved if you’re adding aesthetic features or creating parts with visual appeal. Consider whether the process is a five-axis 3-axis, 5-axis or processing process.
Concentrating on the basics will improve the precision of your computer-aided design (CAD) model. However, aesthetics can also be improved through certain post-machining techniques.
Do not design walls with thin walls.
Research shows that the wall thickness of a material has a direct correlation with the stiffness. Plastics have a minimum wall thickness of 1.5mm while metals have 0.794mm.
Don’t design small features
CNC machines require a minimum diameter of 2.5mm. It is very difficult to machine features smaller than 2.5mm. This can increase machining time and expense. It is better to avoid features with small dimensions.