Principal Expert–Heavy-Payload Industrial Robot Mechanical Design

We are looking for a

Principal Expert in Heavy-Payload Industrial Robot Mechanical Design to lead the mechanical development of next-generation high-payload industrial robots .

This is a senior technical role focused specifically on the mechanical architecture, structural design and system-level optimization of heavy-payload industrial robots .

The successful candidate will have extensive hands-on experience in the development of large industrial robot platforms and a deep understanding of the relationship between payload, reach, structural stiffness, robot inertia, transmission systems, accuracy, dynamic performance and reliability .

You will lead mechanical engineering activities from robot architecture and concept design through simulation, prototype validation, reliability testing and mass production , working closely with control, electrical, servo and manufacturing teams.

Key Responsibilities

• 1. Heavy-Payload Robot Mechanical Architecture
• Lead the mechanical architecture and detailed design of high-payload six-axis articulated industrial robots .

• Develop mechanical solutions for large robot structures, including

• Joint modules
• Robot base and body
• Upper and lower arms
• Wrist and end-effector structures
• Transmission systems
• Mechanical interfaces

• Design robot architectures to achieve the required balance between

• Payload capacity
• Reach
• Structural stiffness
• Robot mass and inertia
• Positioning accuracy
• Dynamic performance
• Reliability
• Lead mechanical architecture decisions for new heavy-payload robot platforms and resolve critical system-level mechanical challenges.
• 2. Transmission, Actuator & Core Component Engineering
• Lead the selection, sizing and application of critical robot components, including:
• RV reducers
• Servo motors
• Bearings
• Shafts and transmission components
• Perform transmission-chain calculations and verification covering torque, speed, stiffness, backlash, efficiency, load capacity and service life .
• Evaluate the interaction between reducers, motors, bearings, robot structures and servo systems.
• Optimize actuator and joint configurations for heavy-payload applications.
• Identify mechanical limitations affecting payload, accuracy, vibration and dynamic performance.
• 3. Structural Analysis & Lightweight Design
• Conduct and lead advanced structural analysis using

FEA and multi-body dynamics simulation .

• Perform

• Strength analysis
• Stiffness analysis
• Modal and resonance analysis
• Fatigue and lifetime analysis
• Dynamic response analysis
• Optimize robot structures for high stiffness, low mass and high reliability .
• Develop lightweight structural solutions without compromising payload capability, rigidity or lifetime.
• Analyze the impact of structural deformation and dynamic behavior on robot positioning accuracy.
• 4. Precision, Reliability & Validation
• Lead mechanical reliability and quality improvement for heavy-payload robot platforms.
• Develop and implement robot-level validation and reliability test plans.

• Support

• Payload and performance testing
• Accuracy and repeatability testing
• Endurance / lifetime testing
• Overload testing
• Failure analysis and root-cause investigation
• Translate test and field data into mechanical design improvements.
• Improve robot reliability, service life and mechanical robustness through systematic design optimization.
• Monitor global technology developments in heavy-payload industrial robots and large articulated robot platforms .

• Evaluate emerging technologies in

• Integrated robot joint / actuator modules
• High-performance reducers
• High-stiffness mechanical structures
• Lightweight materials and structures
• High-reliability transmission systems
• Advanced mechanical design and manufacturing technologies
• Contribute to the technical roadmap and platform architecture for next-generation heavy-payload robots.
• Drive improvements in payload, reach, speed, stiffness, accuracy, reliability and cost competitiveness.
• 6. Cross-Functional Product Development
• Work closely with robot control, electrical, servo, manufacturing, process engineering and testing teams .

• Lead mechanical development through the complete product lifecycle

• Resolve complex mechanical and system-level technical issues.
• Provide technical leadership and mentoring to mechanical engineering teams.

Requirements

• Bachelor's, Master's or Ph D degree in

Mechanical Engineering, Robotics, Mechatronics, Automation, Engineering Mechanics or a related discipline.

7+ years of professional experience in industrial robot mechanical development .

• Proven experience in the development of six-axis articulated industrial robots , preferably heavy-payload platforms.
• Strong understanding of the mechanical architecture and system design of large industrial robots.

• Solid experience with

• Robot links and structures
• Joint mechanisms
• Transmission systems
• Reducers
• Bearings
• Servo motors
• Mechanical tolerances and interfaces
• Strong experience in

RV reducers, harmonic-drive gearboxes, servo motors and transmission systems .

• Deep understanding of the relationship between payload, stiffness, inertia, accuracy, vibration and dynamic performance .
• Strong mechanical analysis capabilities, including structural mechanics, tolerance analysis and mechanical system integration.
• Proficiency with 3D CAD tools and engineering simulation.
• Experience with FEA tools such as

ANSYS, Abaqus or equivalent .

• Experience with multi-body dynamics simulation is highly desirable.
• Experience with robot reliability engineering, validation testing and failure analysis.
• Ability to independently lead mechanical architecture and solve complex system-level engineering problems.
• Preferred Qualifications

Direct experience developing heavy-payload industrial robots with payloads of 300 kg or above.

Experience with 500 kg+ six-axis articulated robots is highly preferred.

• Proven experience taking a heavy-payload industrial robot from concept through prototype, validation and mass production .
• Experience with integrated robot joint / actuator module design .
• Experience in lightweight and high-stiffness mechanical design.
• Experience designing high-reliability mechanical systems for demanding industrial applications.
• Experience with leading industrial robot manufacturers or automation companies.
• Familiarity with international standards applicable to industrial robots and machinery safety.

What We Offer

• A senior technical role focused on the development of next-generation heavy-payload industrial robots .
• Significant influence over robot mechanical architecture and system-level performance.
• The opportunity to work on challenging mechanical problems involving high payload, stiffness, accuracy, dynamics and reliability .
• Close collaboration with international R&D teams across Europe and China.
• Opportunities to contribute to global robotics technology development and product platforms.
• Competitive compensation aligned with the candidate's experience and technical expertise.
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