Chuck-on attachment

N-Head

4 bits. Pull the lever. Holes stay in the sample.

½″ corded · Oakidle

Pattern

Pick a head count, then click a numbered hole and drag. Symmetric mirrors the ring; uncheck to move one spindle.

Symmetric

#X mmY mm

Bits

Click a size, then a spindle — or grab a bit from the rack on the bench.

Sample is blank — drill to leave holes

Vision

Printed marks on the stock. Scan, then the X/Y leadscrews match pitch. Pitch motors fit 4-head rectangles.

Printed template

CAM

Motors 50.0 mm × 50.0 mm · scan to lock

Driver

Hex arbor chucks into a conventional drill. The head is only a gearbox.

850 W cont · 1600 W peak · 2800 r/min · 0.5″ chuck

Cut

MaterialDrill speed 1800 r/minFeed 5.0 mm/s

Telemetry

Waiting for solver…

View

Drive shaftsForce vectorsGear cutawayDown camera

How the model is calculated

A conventional drill chucks the ½″ hex arbor and turns a 1:1 sun. 4 U-joint shafts pick off the planets. Kienzle Kc = Kc1.1 · (h / 1 mm)^(−mc). Chip h = (f/z)·sin(κ) for a 118° point. Torque T = Kc · f · d² / 8, times 4 at the chuck. Power P = T·ω versus the selected drill. Thrust uses 0.65·Kc·d·f·(1+0.6μ). U-joint angle α = atan(offset / 55 mm). Carrier deflection δ = FL³ / 3EI.

4-head pattern

50 × 50 mm

Click a numbered hole, then drag to set spacing and orientation. Symmetric: one hole moves the ring.

Symmetric

Spindle 1 · -25.0, 25.0 mm

CAM

Drill clear · envelope OK

Drag the sample to slide it under the bits · Orbit empty space · Pull the lever to drill

N-Head chuck-on multi-spindle attachment for a conventional drill

4-head pattern