I. Articulated Robotic Arms
Basic Concepts
- 6 rotating axes (6 DOF), human arm-like structure
- Working radius 0.5-4m, repeat positioning accuracy ±0.02mm
- Payload range from a few kg to several hundred kg
Typical Applications
| Area | Application | Parameters |
|---|---|---|
| Automotive manufacturing | Spot welding | 30-50 weld points/minute |
| Electronics assembly | SMT mounting | Accuracy 0.01mm |
| Logistics handling | Palletizing | 1000 boxes/hour |
Market Status
- Global stock exceeds 3 million units, 59.7% of industrial robots
- Major manufacturers: Fanuc, ABB, Yaskawa, Kuka (combined over 65% share)
II. SCARA Robotic Arms
Mechanical Structure Characteristics
- 4 DOF: 2 horizontal joints + 1 vertical linear + 1 end rotation
- High speed: cycle time can be as short as 0.3 seconds
- Accuracy: ±0.01mm ~ ±0.02mm
Typical Applications
- Electronics manufacturing: mobile phone assembly, PCB component insertion
- Semiconductor industry: wafer handling, chip packaging
- Medical field: laboratory automation
Market
- Market share approximately 15%
- Major manufacturers: EPSON, YAMAHA, KUKA, ABB
III. Cartesian Coordinate Robots
Performance Advantages
- High rigidity: box beam structure, can withstand several tons of heavy loads
- High precision: repeat positioning accuracy ±0.02mm
- Load capacity: 5kg-5000kg
Typical Applications
- Automotive manufacturing: body welding, handling
- CNC machining: machine loading/unloading
- Logistics and warehousing: palletizing, packaging
IV. Delta Parallel Robots
Performance Characteristics
- High-speed motion: acceleration 15-20g, speed exceeding 10m/s
- High precision: ±0.01mm
- Lightweight design, payload 1-5kg
Application Fields
- Food packaging: chocolate sorting (200 pieces/minute)
- Pharmaceutical industry: tablet counting, capsule packaging
- Electronics manufacturing: SMD component picking
V. Collaborative Robotic Arms
Safety Features
- Force feedback system: millisecond response, sensitivity 0.1N
- Physical protection: rounded design, soft material covering
- Motion limits: speed <1m/s, power <80W
Market Development
- 2023 global market size: approximately $1.5 billion
- Annual growth rate: 20-30%
- Major manufacturers: Universal Robots, FANUC, ABB, KUKA
Application Advantages
- Easy programming: drag-and-drop teaching, graphical interface, training 4-8 hours
- Flexible deployment: 20-40kg, can quickly transfer between workstations
VI. Other Types
Traditional Types (Gradually Being Replaced)
- Cylindrical coordinate type: simple handling, gradually replaced by SCARA
- Polar coordinate type: early painting and welding, market share <5%
Emerging Types
- Dual-arm collaborative robot: two 7-DOF robotic arms
- Soft continuum robot: flexible materials, minimally invasive medical surgery
- Modular reconfigurable robot: quick replacement of end effectors
Summary
| Type | Characteristics | Market Share |
|---|---|---|
| Articulated | High DOF, complex trajectories | 59.7% |
| SCARA | High-speed precision, planar assembly | 15% |
| Cartesian | High rigidity, heavy load | 15% |
| Delta | High speed, lightweight | 5% |
| Collaborative | Safe and flexible | Rapid growth |
Main Trends:
- Intelligence: integrated AI algorithms, autonomous decision-making
- Flexibility: modular design, rapid product changeovers
- Safety: advances in collaborative robot technology
- Integration: deep integration with vision, force control, and IoT