Design Element | Suggestions (Industry Standard Values) | Reasons and Benefits |
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Material Thickness | Recommended range: ≥0.5 mm (typical: 1 - 50 mm) | Achieves precise machining, maintains rigidity, and avoids deformation. |
Corner Radii | Minimum internal radius ≥ 0.5 mm | Minimizes stress concentrations, reduces tool wear, and prevents cracking. |
Hole Diameter | Minimum recommended hole diameter ≥ 1.0 mm | Ensures reliable tool operation, precise drilling, and reduces tool breakage risk. |
Hole Depth-to-Diameter Ratio | Maximum depth typically ≤ 10:1 (ideal ≤ 5:1) | Prevents drill deflection, improves accuracy, and ensures surface quality. |
Threaded Hole Depth | Recommended depth ≤ 3x thread diameter | Ensures sufficient thread strength without increasing complexity and cost. |
Minimum Wall Thickness | Typical minimum wall ≥ 0.5 mm | Maintains structural integrity, reduces deformation during machining. |
Tolerances | Typical CNC tolerance: ±0.025 - 0.125 mm | Provides high precision machining, balancing accuracy and cost efficiency. |
Undercuts | Minimize or clearly define (use special tools if necessary) | Reduces machining complexity, lowers cost, and improves manufacturability. |
Surface Finish | Standard finish: Ra 1.6 - 3.2 µm; Precision: Ra 0.4 - 0.8 µm | Ensures desired surface quality, balancing appearance, performance, and machining cost. |
Text and Logos | Minimum engraving depth ≥ 0.2 mm | Ensures legibility and clarity in engraving without compromising strength. |
Fillets | Minimum fillet radius ≥ 0.5 mm | Reduces internal stresses, improves structural strength, and simplifies tool paths. |
Chamfers | Typical chamfer ≥ 0.3 mm x 45° | Reduces edge sharpness, enhances safety, and simplifies assembly. |
Internal Cavities | Limit depth ≤ 4x cavity width | Improves accessibility, ensures accurate tool operation, and reduces tool vibration. |
Part Complexity | Simplify geometry wherever possible | Reduces machining time, lowers costs, and minimizes potential errors. |