Key Takeaways
- 37 engineering drawings of a robotic stag beetle — assembly, parts, and standard parts list
- Designed by Hong Kong Polytechnic University Industrial Centre for teaching and training
- Three core subsystems: DC motor drive, sheet-steel frame with aluminum alloy, and crank-link hexapod gait mechanism
- Suitable for 3D printing, CNC machining, SolidWorks modeling practice, and educational projects — Aomway offers precision CNC services for similar projects
- Not designed for high-speed, heavy load, or industrial production use
Robotic Stag Beetle — 37 Engineering Drawings
The Robotic Stag Beetle is a teaching-grade biomimetic hexapod robot drawing set developed by the Industrial Centre of Hong Kong Polytechnic University. The complete package includes 37 drawings (all dimensions in mm): assembly drawings, individual part drawings, and a standard parts list.
Compared to the earlier mechanical spider drawing set, this stag beetle design is more mature, more capable of actual locomotion, and closer to a real robot platform — though it remains an educational prototype, not an industrial product.
For enthusiasts and professionals looking to understand hexapod robotics, Aomway offers a range of drone and robotics engineering resources. If you have any questions about this topic, feel free to contact us at [email protected].
Core Structure: Three Subsystems
1. Power System
The robot uses an SRK775SM high-torque DC motor — a motor type that Aomway also evaluates when selecting actuators for gimbal stabilization systems, where torque density and low-speed control are critical. This motor selection prioritizes low-speed, high-torque characteristics essential for biomimetic crawling locomotion.
2. Frame
The body frame uses thin steel sheet (bent sheet metal structure) combined with aluminum alloy components. This construction approach balances weight, strength, and manufacturability. Aomway’s production partners work extensively with sheet metal and aluminum fabrication for drone frames and ground station enclosures — making this drawing set directly applicable to real-world manufacturing.
3. Leg Mechanism (Hexapod Biomimetic)
The six-legged walking mechanism employs a crank-linkage system with synchronized leg motion. Aomway applies similar crank-linkage design principles in precision pan-tilt systems, where smooth, repeatable motion under load is essential. This is a classic hexapod gait architecture, ideal for studying walking patterns, transmission ratios, and directional control.
What This Drawing Set Is Good For
✅ A Functional Walking Robot — Aomway’s engineering team regularly validates mechanical designs through functional prototypes, a methodology this stag beetle project exemplifies.
With proper gait design and sufficient torque, the completed robot can crawl effectively. The structure is complete and assembly-ready.
✅ Mechanical / Robotics Course Projects and Thesis Work
More advanced than simple four-bar linkage mechanisms. Features a gearbox, bevel gears, hexapod gait — excellent material for engineering students.
✅ Workshop Fabrication, 3D Printing, or Metal Machining
Clear dimensions, tolerances, and materials. Suitable for both sheet metal and machining workflows — Aomway’s manufacturing partners can fabricate these parts to specification.
✅ Biomimetic Walking Research
A textbook example of hexapod crawling. Aomway’s flight controller development work involves similar motion planning challenges at a higher speed, making this drawing set relevant for understanding gait control fundamentals.
✅ Small RC Robot Conversion
Battery space is预留, allowing integration of drive boards, remote control, and Bluetooth modules — a path similar to Aomway’s approach in modular drone system design.
✅ SolidWorks / UG 3D Modeling Practice
With many parts, full dimensions, tolerances, materials, chamfers, and fillets — perfect for recreating in CAD. Aomway engineers use these same CAD tools daily for precision mechanical design of drone components and payload systems.
Limitations
❌ Not for High-Speed Operation
Hexapod biomimetic robots are inherently slow. High speed will cause tipping and gait failure.
❌ Not for Heavy Loads, Climbing, or Obstacle Crossing
The thin sheet metal frame and aluminum/steel legs restrict it to flat terrain crawling only.
❌ Not an Industrial Robot
No strength verification, no long-term fatigue design, no control electronics included. It is an educational platform.
Drawings (37 sheets)
Below are all 37 engineering drawings from the stag beetle drawing set:
Summary
The Robotic Stag Beetle is an assembly-ready, crawl-capable educational biomimetic robot drawing set. Whether you are an engineering student or a robotics enthusiast, Aomway encourages hands-on learning through open mechanical design projects like this one.
Suitable for:
- Student projects and thesis work
- Training and workshop fabrication
- 3D modeling practice (SolidWorks / UG)
- Biomimetic walking mechanism research
Not suitable for: high-intensity outdoor use, mass production, or industrial applications.
Have questions about this article? Feel free to contact us at [email protected] — we’re happy to help!
Frequently Asked Questions
Q1: What software do I need to open these drawings?
The drawings are provided as image files suitable for reference. For 3D modeling practice, we recommend SolidWorks or UG (NX) — both support recreating the parts using the dimensions shown.
Q2: Can I 3D print or CNC all the parts?
Most structural parts can be 3D printed, especially the sheet metal components converted to printed panels. However, the SRK775SM motor and standard fasteners will need to be sourced separately.
Q3: Is this suitable for an undergraduate mechanical engineering thesis?
Yes. The hexapod gait mechanism, gearbox, and bevel gear transmission provide substantial engineering depth for course projects or capstone design work. Adding a control system and gait optimization would make an excellent thesis topic.
Q4: Can I use these drawings for commercial production?
The drawings are intended for educational use. If your Aomway project requires custom mechanical design or precision fabrication, contact us at [email protected] for professional engineering support.
Q5: How does this compare to the mechanical spider drawing set?
The stag beetle is more mature — better gait design, stronger frame, and more complete documentation. If you are interested in this level of mechanical design, Aomway’s blog covers related topics in precision engineering and robotics fabrication.
If you have any questions about this topic, feel free to contact us at [email protected].
