Freakazoid: Competitive Battle Bot
Anteater Combat Engineering (ACE)
2025
1/Summary
Designed and manufactured a 1-lb BattleBot featuring a modular 3D-printed chassis optimized for lightweight durability and rapid part replacement.
Integrated a belt-driven spinning weapon system with custom tolerances for reliable engagement and minimized frictional losses during combat.
Validated structural performance through finite element analysis (FEA) and iterative prototyping, ensuring strength, maneuverability, and resilience under impact conditions.
2/Design Breakdown
Weapon + Weapon Hub
Weapon Design - Exploded View
Button Head Torx Screw
Needle Thrust Bearing
Washer
Washer
Weapon Hub Bearing
Scalar Weapon Shaft
Weapon Belt
Weapon Hub
Weapon Hub Bearing
Horizontal Spinning Weapon
Washer
Washer
Needle Thrust Bearing
Button Head Torx Screw
Chassis
Chassis - Exploded View
M3 Pan Head Screw
M3 Pan Head Screw
M3 Pan Head Screw
Chassis Top Plate
Roller Bearing
Chassis Main Body
5 Spoke D-Shaft Wheels
Roller Bearing
Weapon Design
We transitioned from a blade-style weapon to a hammer design to increase striking reliability and energy transfer. The increased contact area reduces the risk of snagging on opposing bots while improving the bite and distributing impact forces more effectively. The hammer profile concentrates mass behind the strike face for higher impulse, while integrated cutouts reduce weight, refine moment of inertia for faster spin-up, and assist with balancing and manufacturability.
Motor Mounting Design
The chassis features a snap-fit system to secure the brushed motors without any external hardware. I designed complementary semi-cylindrical cutouts in the base and top plate, each conforming to half the motor profile. The interlocking geometry provides a precise press-fit, reducing part count, easing assembly, and maintaining stability under dynamic loads.
