Matrox > Case Studies > Machine Vision-based Assembly System Fits and Mounts Wheels onto Cars

Machine Vision-based Assembly System Fits and Mounts Wheels onto Cars

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 Machine Vision-based Assembly System Fits and Mounts Wheels onto Cars - IoT ONE Case Study
Technology Category
  • Analytics & Modeling - Computer Vision Software
Applicable Industries
  • Automotive
Applicable Functions
  • Discrete Manufacturing
Use Cases
  • Computer Vision
  • System Integration
The Customer

IBG Automation GmbH 

About The Customer

Automation solutions provider.

The Challenge

Using manual assembly methods to mount wheels onto cars in continuous operation is extremely costly for automotive manufacturers. This is mainly because several assembly workers are required to perform the work.

The Solution

Two six-axis industrial robots—one located on each side of a car body—gather wheel bolts and rims from their supply stations and screw them onto the car. The robots are synchronized with the conveyor and follow the car’s movement during assembly. Attached to each robot is specialized lighting with polarized and infrared filters. A Matrox Iris GT smart camera is also attached to each robot. The smart camera locates the rim’s centre point and calculates its position (x, y), rotation (Rz) of the bolt circle, and distance to the camera (z) in calibrated coordinates. Before these coordinates are given to the robot, the smart camera checks to see whether the rim design that it has located matches the rim that is expected to be given by the PLC. This last test prevents the wrong rim design from being mounted on the vehicle. Thirteen different wheel combinations—seven rim designs and four types of lacquer (white, silver, anthracite, and black)—are identified. The entire automated wheel assembly process has a cycle time of only 54 seconds.

The image processing system is based upon the Matrox Iris GT smart camera. The application was developed with Matrox Design Assistant, an integrated development environment (IDE) that is bundled with the camera. 


Operational Impact
  • [Cost Reduction - Labor]

    By automating this process, automotive manufacturers not only see labor costs drastically reduced, but overall manufacturing quality improves as assembly errors are eliminated.

  • [Efficiency Improvement - Production]

    The Matrox system detects a 99.9% rotational availability of the wheel bolt ring.

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