GEFRA, a traditional developer and producer of sorting and inspecting machines OPTISORT.

We continuously improve our systems for the benefits of our customers, therefore we have advanced our SFS System (SFS = shape from shading) and are able to include all necessary components into a smaller camera system including the extensive lighting. The SFS technology uses several images with different directions of lighting. These pictures are combined together and calculated by an algorithm to one single image. As a result, an image is produced containing all shape information of the surface. Every small surface defect can be shown and detected very effectively.
The new computer system we have developed allows us to increase the speed with SFS from top and bottom up to 450 ppm. The smaller ring light allows us to change the position between top and bottom that we will have a much better image which gives a very good result.
Furthermore is it possible to develop and upgrade this system in house at GEFRA, giving the benefit of a short reaction time and updates to our customers.
Due to the fact, that the correct lighting position of the SFS process is mandatory, we use servo motor driven axes to set the position of the flash lighting. With this, GEFRA customers gain time and secure inspection quality to set the correct lighting within a few seconds, when changing to the part which will be inspected next. The machine saves all necessary data of the lighting position in the part data list.

We offer two main machine designs, a steel ring type for inspecting screws and long rod-shaped parts, and a glass ring design for inspection of nuts, washers, rivets, and other flat parts.
Our range begins with screws in diameter of 1,4 mm and goes up to 18 mm. Length of screws can be inspected up to 160 mm. Inspecting ratio up to 2000 ppm depending on size and inspection equipment.
For flat parts with a surface up to 90 x 90 mm and a height of 130 mm.

Our portfolio begins with inspecting measurements of production parts as for example, shaft diameter, head diameter, thread quality, and so on. Further we can inspect surface defects, scratches, cracks, symmetry, straightness, flatness, ovality, and differences of material quality or hardness. Equipped with a color camera, it is possible to detect deviations of colors on the surface e.g. coating errors. We also offer loading systems and packaging stations which are also controlled by the machine.
Our software system GEFRA AutoControl is easy to use with a minimum of training and developed to an operator friendly standard. The user does not need any programming skills nor any profound knowledge of computer systems.
It is possible to do trainings for your operators at your plant or at GEFRA site. We have an end inspection of all machines in house at GEFRA and technicians who install the machine at your location on site. We offer online service via LAN connection and team viewer.
Our inspection data can be passed through to your product data acquisition system, and GEFRA OptiSort machines are able to correspond with peripheral machines such as packing stations or loading belts.

If you are not sure, if your parts can be inspected to the quality you need, just call us and send us some sample parts, we will try to get them running on our demo machines, in order to give you a possible solution, if we can achieve your inspection needs with a GEFRA OptiSort system.