MATERIAL: 303 Stainless Steel
SPECIFICATIONS: (61) 0.002 in. diameter holes with 10:1 aspect ratio; 0.020 in. part thickness
A V22 equipped with a 0.050 mm diameter drill was used to machine 61 individual 0.002 in. micro holes into a flat 0.020 in. thick 303 stainless steel plate.
To reduce tooling runout, a high precision collet holder assembly featuring a BIG "Mega Micro" collet chuck, BIG "micro" collet, and BIG precision "micro" nut was used.
Makino's hybrid ATLM tool tip contact sensor was utilized for automated, quick, repeatable set-up of the micro cutters. The machine's SGI control system provided high-precision positioning accuracy of the drill tip throughout the machining process, enabling a precise and stable chip load while achieving high Z axis rapid feedrate.
The part was fixtured to an Erowa Compact Combi / Right Angle tooling chuck for simple on and off chucking and in-process inspections.