Machining strategy
5-axis work that keeps hinge and cradle in one coordinate system
A phone stand looks simple until you stack the tolerances. The hinge bore, the cradle face and the cable slot all have to line up, or the phone sits at the wrong viewing angle. We machine the body on a 5-axis center so the hinge axis, base face and slot are cut without re-fixturing. That removes the datum shift that shows up when you move a part across three machines.
For 7075-T6 arms we rough, stress-relieve, then finish. Aluminum moves after heavy stock removal, and a stand that was straight on the bench can bow 0.03 mm after anodizing if the internal stress is left in. A light finish pass after relief holds the geometry.
- 1
Hinge boreBored and reamed in the same setup as the base, ±0.005 mm on diameter
- 2
Cradle faceFlat within 0.02 mm so the phone does not rock
- 3
Cable slotCut with a 3 mm end mill, corners relieved for molded plugs
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