Specializing in Grinding, Crafting Intelligent Solutions
ROKAE, with years of expertise in the grinding industry, introduces the new NB25h series industrial robots specifically designed for grinding applications. This innovative intelligent grinding solution has been widely adopted in the automotive parts sector, including high-load scenarios such as turbocharger housings, pistons, and servo housings.
1. High-Performance Robots Address Grinding Challenges
1.1 High Torque, Advanced Protection
Through comprehensive optimization of structural design, ROKAE has developed high-inertia, high-rigidity robots. The newly launched NB25h series features quasi-hypoid gear transmission, enhancing hardware structure:
• Superior load and impact resistance
• 57mm large hollow wrist diameter
• Six-axis ±720° rotation
• IP67 protection rating
1.2 Highly Sensitive Collision Detection
Based on a refined dynamics model for real-time external force detection, this feature provides sensitive yet robust collision detection, uniquely implemented at scale by ROKAE:
• Significantly reduced collision forces without additional hardware
• Automatic retraction upon collision to eliminate applied forces
• Rapid recovery post-collision without losing origin point, no power-off restart required
1.3 Precision
Enabled by TrueMotion high-speed path accuracy maintenance technology and global stiffness-flexibility error identification and compensation algorithms:
• Accurate operation at taught positions regardless of speed
• Smooth trajectories with stable motor performance
1.4 Speed
Utilizing OptiMotion optimal motion planning based on dynamics, the robot achieves top-tier joint speeds, combined with global vibration suppression algorithms, ensuring:
• Seamless execution of short segments and small trajectories in various orientations
• Acceleration and deceleration within minimal time without oscillation
• Optimal speed for shortest cycle times within safety limits
• Enhanced robot lifespan
2. Advanced AI Algorithms to Meet Complex Production Line Demands
2.1 Intelligent Vision System
• Real-time acquisition and processing of workpiece information.
• Automatic generation of object edge trajectories.
• Online real-time adjustment of process parameters.
• Automatic detection and compensation of system errors.
2.2 Compliant Force Control System
• Real-time compensation for normal displacement, maintaining constant polishing pressure.
• Suitable for high-surface-precision flat polishing scenarios.
2.3 Offline Programming Software
• ROKAE's offline programming and simulation software, RokaeStudio, supports complex continuous surface path modeling and robot interference verification.
• Significantly enhances programming efficiency and simplifies operational complexity.
3. Comprehensive Service System to Support Practical Production Applications
• ROKAE collaborates with upstream tool manufacturers and partners to provide comprehensive pre- and after-sales services.
• Robots are compatible with mainstream electric grippers and suction cups, with optional standard pipeline packages supporting multiple product models for easy and quick model changes.
Case Study: Polishing of Automotive Steering Knuckles
Steering knuckles, also known as "king pins," are critical components in automotive steering bridges. After die casting, they often develop flash and burrs that can severely impact subsequent assembly precision and quality. Deburring and polishing are essential steps in the manufacturing process.
1. Scene Challenges
• High precision required for polishing trajectories, especially at turning points where speed and accuracy are critical.
• Cycle time must be controlled within 65 seconds, with a pass rate exceeding 99%.
2. Solution
• ROKAE utilized an NB25-35/1.8 industrial robot with a 35kg payload and 1813mm reach.
• Equipped with a dual-head force-controlled polishing tool and a rotary mechanism to polish both sides of the same product, enhancing efficiency.
• High-bandwidth collision detection ensures zero-point retention under multi-dimensional collisions, providing stable and reliable production.
3. Customer Benefits
• Continuous 24/7 operation with cycle times reduced to under 60 seconds, increasing production by 50%.
• Supports 3-4 product types with excellent consistency, achieving a pass rate of ≥99.5%.
4. Customer Feedback
"In the past, we relied on imported robots for deburring operations post-die casting. After partnering with ROKAE, we quickly decided to integrate their robots into our standard deburring machines. This decision was swiftly validated; ROKAE robots met the stringent requirements for trajectory precision and high-speed performance in deburring processes, demonstrating impressive reliability. Additionally, the ROKAE team promptly addressed many technical challenges involving software integration. We have successfully promoted various deburring machine models to customers, which are now running smoothly at multiple customer sites, significantly improving production line efficiency and enabling more efficient, precise manufacturing."