CNC Manufacturing Flashcards


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created 8 months ago by jessicaschneider
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1

Tip 1

(1 for vertical straight line)

Add a radius to internal vertical edges

R>1/3D

2

Tip 2

(2 many cavities to limit)

Limit depth of cavities

3

Tip 3

("3" is the limit of threads)

Limit length of threads

(1/2 or more of diameter of unthreaded length at bottom of hole)

(Threads have max of 3x length of hole diameter)

4

Tip 4

(4 holes and threads standard drill and tap size)

Use standard drill and tap size for holes and threads

(diameters 10mm up add 0.1mm)

(diameters over 10mm ass 0.5mm)

5

Tip 5

Increase thickness of thin walls

(metal, thicker the better, over 0.8mm)

(plastic, keep minimum thickness)

6

Tip 6

Avoid small features, Width to Height ratio

7

Tip 7

Minimize number of machine setups

(or separate into multiple geometries)

8

Tip 8

Center axial symmetry, avoid 3-axis and 5-axis

9

Tip 9

Add tolerances only when necessary, use a single datum as reference

10

Tip 10

Laser over CNC engraving (for text, size and add vector for accuracy)

11

Tip 11

Avoid multiple surface finishes

12

Tip 12

Account for bank size and material removal

13

Tip 13

Machinability, what's the best material

(aka soft metals)

14

Tip 14

Consider price of bulk material

15

Tip 15

Buy bulk, economic advantage in material