Technical Drawing for CNC Machining
The quality of CNC-machined parts is heavily influenced by their initial design. Even with the best tools and programming, a poorly designed part can compromise both the quality of the end product and the efficiency of the CNC prototype service. Traditionally, technical drawings have served as a vital tool to clarify the part’s technical requirements among engineers, designers, and manufacturers.
Are technical drawings still relevant?
Though manufacturers often request 3D CAD files for quotes and modern CNC machines can read digital files to understand part geometry, technical drawings maintain their importance. Utilizing technical drawings can make the CNC prototype service more efficient, speeding up the manufacturing process and reducing costs.
Why technical drawings are crucial
While 3D CAD files offer a detailed view of a part, they may not convey certain specifics that a CNC prototype service needs to know. Technical drawings can provide additional information such as:
- External or internal threading
- Tolerances that exceed standard specifications
- Surface finishing requirements like surface roughness
Even if your part design doesn’t include these features, providing a technical drawing alongside the CAD file can serve as an invaluable reference throughout the CNC prototype service process.
Advantages of using technical drawings
Some CNC machining companies may actually prefer technical drawings to digital CAD files for several reasons:
- They offer a quick visual interpretation of the part’s geometry.
- They easily lay out the part’s functions, dimensions, and critical features.
- They allow for a straightforward assessment of manufacturing costs.
Get expert design assistance.
If you’re unsure about how to design your part, whether in a 3D CAD file or a technical drawing, our expert team at HLH Prototypes can offer guidance. Providing design tips and advice is part of our comprehensive CNC prototype service. Feel free to take advantage of our free project review to get started on the right foot.