# EOLT Robot Cells for Multiple Testing of Haptic Components > Source: https://mcd.site team.de/en/industries/automation-industrial/eolt-robot-cells-for-multiple-testing-of-haptic-components/ > Last updated: 2026-10-05 --- EOLT Robot Cells # Multiple Testing of Haptic Components [Learn More](#) ![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-robot-cell_mcd-01-scaled-e1788358067590-1024x561.png) ## This end-of-line test line, featuring five stations and two robotic cells, inspects the tactile, visual, and functional characteristics of automotive control panel bezels and switches. Through a centralized and intelligent network of test cells, all test processes are flexibly controlled, monitored, and individually adapted to different test specimens. The line combines robot-assisted haptic tests, dynamic force-displacement and torque measurements, and optical inspections (AOI) into a seamless testing system. This ensures precise, reproducible, and efficient quality assurance in the end-of-line process. ## Challenges and Concept ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) ![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-robot-cell_mcd-02-4-1.png) The end-of-line test line consists of five coordinated stations that enable end-to-end quality testing of automotive control panel bezels and switches. Two integrated robot cells handle the haptic testing processes and ensure a high degree of reproducibility in the measurement results. Using 6-axis industrial robots, dynamic rotational actuations, friction forces, and force-displacement curves are precisely recorded and evaluated. The setup is supplemented by mechanical test methods, such as the wobble circle test, as well as by electrical connections for functional testing of the components. The entire line is controlled centrally via the MCD manufacturing control system (MES tool), which enables flexible adaptation to different test specimens and complete documentation of the test data. NIO parts are automatically separated using pneumatic chutes equipped with a through-feed sensor, while graphical analysis is performed using special tool monitors. ## Scope of Testing and Functionality ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) ![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-robot-cell_mcd-05-1-scaled.png) The two robotic cells form the core of the haptic testing process within the end-of-line test line. Here, 6-axis industrial robots precisely simulate real-world actuation processes on automotive control panels and switches. Both rotational movements and friction and actuation forces are dynamically recorded and evaluated in real time. Particular emphasis is placed on the multiple testing of haptic components, during which various mechanical properties—such as resistance, synchronous movement, and springback behavior—are evaluated. In addition, force-displacement measurements and wobble circle tests are used to ensure the highest level of accuracy. In addition to mechanical and tactile testing, automatic contact testing is performed to verify the functionality of the components. The results are centrally recorded and visualized in the MCD system and made available for quality assessment. This ensures consistent, reproducible, and efficient testing in the mass production process. ## Test Methods Used and Results ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30132.svg) ![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-robot-cell_mcd-04-1-scaled.png) Visual inspection of automotive control panel bezels and window regulator switches is performed using state-of-the-art AOI (Automated Optical Inspection) systems. During this process, all relevant visual characteristics—such as LED color, brightness, and position, as well as the quality and legibility of symbols—are precisely recorded and evaluated. In addition, various lighting scenarios—such as search lighting, day and night designs, and functional lighting—are automatically tested to ensure consistent visual quality. High-resolution specialty cameras, combined with the MCD Vision ToolMonitor, enable detailed image analysis in real time. Combining optical inspection with haptic and functional testing processes creates a comprehensive quality system. This ensures seamless inspection of all control elements and supports error-free mass production in the automotive sector. ## FREQUENTLY ASKED QUESTIONS ### FAQs What is an EOL test line with robotic cells? An EOL (End-of-Line) test line is an automated testing system located at the end of the production line. Using integrated robotic cells, automotive instrument panel bezels and switches are tested for tactile, visual, and functional quality to ensure the quality of each component. What tests are performed on the production line? The line combines several types of testing: haptic tests (e.g., torque, friction, force-displacement), mechanical wobble circle tests, electrical functional tests, and optical AOI inspections of LEDs, symbols, and lighting. What role do robotic cells play? The robotic cells perform precise and repeatable haptic testing. 6-axis articulated-arm robots simulate real-world operating movements while measuring the forces, torques, and mechanical resistance of the components. How is the visual inspection of the components performed? Visual inspection is performed using AOI (Automated Optical Inspection) systems equipped with specialized cameras. These systems automatically analyze LED color, brightness, symbol quality, and various lighting conditions. How are the test results processed? All data is collected, analyzed, and visualized centrally via the MCD manufacturing control system (MES tool). This ensures complete traceability and documentation. What happens to defective parts (NIO)? Reject (NIO) parts are automatically sorted out via pneumatic chutes. An integrated through-feed sensor ensures reliable separation from the good material. For which products is the test line suitable? The system is specifically designed for automotive control panel bezels and window regulator switches, but can be flexibly adapted to different test specimens and variants. What are the advantages of combining robotic and AOI inspection? This combination enables comprehensive quality control: mechanical, tactile, and visual properties are tested in a single system. This increases precision, repeatability, and efficiency in the end-of-line process. ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp) ## KEY FACTS System Architecture & Control ### End-of-Line Test Line ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### with 5 stations and 2 robotic cells ### Central Control ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### About MCD Production Control (MES Tool) ### Graphical Analysis ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### About Tool Monitors and Vision Systems Haptic and Mechanical Testing ### Robot-Assisted Haptic Testing ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### using 6-axis articulated-arm robots ### Multiple Testing of Haptic Components ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### Torque, Friction, Force-Displacement ### Integration ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### mechanical wobble circle testing and electrical contacting Visual Inspection & Quality Assurance ### AOI inspection for ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### LED Color, Brightness, and Icon Quality ### Automated NIO Handling ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### via a pneumatic chute with a through-feed sensor in the test adapter ## REFERENCE PROJECTS [![](https://mcd.site team.de/wp-content/uploads/2026/07/vts-2030_automated-with-robot_mcd-002-1-scaled.png)](https://mcd.site team.de/en/industries/automation-industrial/vts-2030-with-robotics-for-automated-testing-systems/) VTS 2030 with Robotics for Automated Testing Systems [![](https://mcd.site team.de/wp-content/uploads/2026/07/INLINE-SYSTEM-multiple-pcb-test_mcd-001-910x1024.png)](https://mcd.site team.de/en/industries/automation-industrial/inline-system-for-testing-multiple-printed-circuit-boards/) Inline system for testing multiple printed circuit boards [![](https://mcd.site team.de/wp-content/uploads/2026/07/INLINE-SYSTEM-mechatronic-components_mcd-003-1024x995.png)](https://mcd.site team.de/industries/automation-industrial/inline-system-mechatronic-components-automation/) In-line testing system for mechatronic components ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp)