ROBOTIC PHOTOGRAMMETRY OPTIMIZES THE PRODUCTION LINE

The coupling of robotics in production systems and production environments is allowing the increase in the efficiency of industrial processes. Through the use of robotic solutions, they are viable to automate most industrial processes with a reliable and safe method, although it is still in the process of improvement in terms of precision, flexibility, interaction between robots and productive inactivity.

Currently there are developments focused on improving the previous concepts in industrial robots. The location of a point in three-dimensional space has even improved, determined by triangulating multiple location perspectives with the use of robotic photogrammetry.

A concept that has been used with optimal results evaluating dimensions and position of objects in space. Showing an increase in the use of robotic photogrammetry for measurement in automated production

The key to the photogrammetry system is a self-contained and freely positionable 3D fringe projection sensor, which identifies its orientation in a higher-level coordinate system exclusively through markers attached to the component or tools associated with reference points.

Digital technology applied to manufacturing in industrial processes has had a great advance, the production of objects or elements in 2D are now projected in 3D CAD systems. The three-dimensional simulation associated with CAM systems design molds or outline objects together with productive equipment and tools, obtaining high-quality product results along with an efficient use of space and ergonomics.

An example of systems designed based on photogrammetry 3D vision technology is presented by the IK4-Ideko technology center (a technology center specialized in manufacturing and industrial production technologies that designs differentiating technological solutions to improve its competitiveness). In 2018 they designed an advanced multi-camera system that provides vision to the robots, orienting their movements and providing another option for the performance of tasks such as locating tools.

The system allows objects to reach the six degrees of freedom, in other words, the three turns and the three displacements that bodies can make. This system provides a breakthrough in precision through a multi-camera vision system that makes it possible to track the six degrees of freedom of an object in parallel. As a result, an evaluation of the exact measurement of the objects is obtained and their position and their appropriate dimensions are determined so that the robotic arm can take them and manipulate them with precision.

The purpose of this system is that regardless of the location of the objects the robot can locate them in order to function in flexible assembly systems.

This alternative also allows converting the data obtained in two dimensions into information in 3D. That is, with a development reconstruction software where the images are corrected and the coordinates of the points are calculated after the measurement, with the aim of perceiving through the vision cameras the same as a human eye would appreciate.

This type of technology based on photogrammetry is already an effective solution that provides high precision measurement in the production line of the automotive and aerospace industries and in machining, milling, welding applications, among others.