Hexapods for High-Precision and Dynamic Positioning of Headlamps in a Dimensional Measuring Machine

The Dimensional Measuring Machine DM401 Series of the DYMACO Group is a very compact and flexible workstation for in-line automated dimensional measuring of headlamps in the Automotive Industry.

Based on the CAD data of the lamp, specific measurement points are defined for initial calibration. The lamp is picked from the production line and placed inside the inspection machine onto a positioning system with six motion axes. As the metrology is done automatically according to the calibration data, the sample is adjusted inside the machine to a defined position. The positioning is done with high precision in the micronrange and very fast in all degrees of freedom for high throughput rates.

For this kind of motion, the Series Inspection Machine employs a parallel kinematic hexapod robot from PI. The customized H-820 Hexapod provides outstanding precision with identical dynamic behaviour in all axes, low moving net mass and high stiffness.

Flexibility in Production Lines

The use of hexapod systems allow for an outstanding flexibility for a large variety of samples of in-line automation systems by minimizing the required space for motion robotics. The DM series excel in their high flexibility, reliability, simplicity, compact design, and easy programmability. Their high accuracy combined with high speed make the DM401 series the ideal choice for automating inspection applications.

Parallel Kinematic Robots

In a parallel-kinematic multi-axis system, all actuators act directly on a single moving platform. This means that all axes can be designed with identical dynamic properties, thus reducing the moved mass considerably. Hexapods are used for moving and precision positioning, aligning and positioning loads in all six degrees of freedom, i.e., three linear and three rotational axes.


The Italian company DYMACO Group is specialized in the field of Advanced Automation. DYMACO is committed to the design and production of Innovative Inspection, Testing, Process, and Assembly Systems helping industries from all over the world to be competitive in a vast array of applications. DYMACO’s philosophy is to develop in-house Engineering Equipment Capabilities that concern all its products and solutions in order to be able to react quickly to customer requests and guarantee a direct customer service in Europe or in its NAFTA Service Center at Houston US.

Learn more about hexapods for positioning headlamps and the technology of parallel kinematics

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