8. MSBS CALCULATION - H-division-24-25-Even/Repo-10 GitHub Wiki

MOTOR SIZING FOR DC MOTOR 2 (PUNCHING)

Mass of the combined system of slider crank mechanism includes crank, slider, hollow aluminum rod, and nylon rods is 30.6 gm i.e 0.0306kg

The force which acts here is Horizontal force

F=μ*mg

Coefficient of friction is assumed to be 0.45

F=0.450.03069.8 F=0.134946N

TORQUE CALCULATION

T=Fr T=0.1349460.05 T=0.0067473

SAFETY FACTOR

Tmax = 1.5*T Tmax=0.01012

MOTOR SIZING FOR DC MOTOR 1(SLAPPING)

Spur Gear 1 – 5 cm dia – 20 g

Spur Gear 2 – 6 cm dia – 25 g

Spur Gear 3 – 5 cm dia – 20 g

Bearings (2 total) – 5 g (2.5 × 2)

Rotating arm – 2 g

All parts are rigidly attached and rotate together (Gears 1 and 3 rotate with arm around Gear 2)

Masses (in kg):

Gear1 = 0.02 kg

Gear2 = 0.025 kg

Gear3 = 0.02 kg

Bearings = 0.005 kg

Arm = 0.002 kg Total mass = 0.072 kg

**TORQUE CALCULATION

T=F*r

Here, Tangential force comes into act the value of tangential force is 0.0166N

Radius is 3cm i.e 0.03m

T=0.0166*0.03 T=0.000498kg-cm

SAFETY FACTOR

Tmax = 1.5T Tmax=1.50.000498 Tmax=0.000747