Threads design tip for CNC machining

October 25

Thread features on your parts will come out much better if your design allows you to follow some standard CNC machining guidelines.

For the size of threads a minimum of M2 should be observed with HLH’s recommendation of M6 or larger. HLH can accommodate and cut a range of different thread types, most common are metric threads, but imperial UNC and UNF, pipe threads and other standards are also achievable with a preference for metric.

 

All threads and details should be clearly marked on your engineering drawing, this sometimes gets overlooked. The length of your threads are recommended to be 3x the hole diameter. If you have any other questions about designing threads for CNC machining then email our rapid project team today – info@HLHPrototypes.com.

 

Follow this design tip and other tips coming up to achieve a part design that is well suited for CNC machining. Below is some further CNC machining guidance which may help you with designing a successful part for CNC machining.

HLH Max CNC Machining Size: 3000x1200x850mm

Advantages
High speed
High dimensional accuracy
Great surface finish
Wide material selection
High volumes
Rapid prototypes

Drawbacks
It can be expensive for complex
parts and for larger parts.

Tolerances: ISO 2768-1 states the tightest tolerances possible as standard are +/- 0.05mm for metals or +/- 0.2mm for plastics. Tighter tolerances should be discussed case by case.

Surface Finishes
Polishing
Sand blasting
Painting
Plating & More

Popular Materials
Plastic ABS, PC, Acrylic
Metal SS304, 316
Aluminium 6061, 7075
Plus many more

Tips and Tricks
Radius internal corners
Loosen tolerances where possible
Keep features perpendicular to the six sides
Reduce the number of setups
Keep it simple

At HLH, we make things for you. FreeQuote@HLHPrototypes.com

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