Germany GOM sheet molding strains in the mesh measuring system ARGUS

Germany GOM company produced ARGUS sheet metal forming the grid should become measuring analyzer is designed to measure the sheet metal parts stamping strain after the distribution, the measurement results in an intuitive graphical display color temperature can be easily applied to the analysis of the forming process and optimization, in an area with a large strain deformation, will appear as "hot spots." The main purpose of the system include:? Detect deformation forming part of the critical issues to solve complex optimization stamping die stamping process simulation test was used to verify and optimize the ARGUS principle before the sheet metal deformation, using an electrochemical etching???? The method of etching the surface of the metal plate template pattern grid rule. During the forming process, which consists of many small dots of the graph as constituting deformation of the sheet is deformed, but these dots in the forming process even when subjected to pressure and friction effects will not be erased. After forming the use of a high-resolution CCD camera from different angles of the parts were photographed measurements. ARGUS ARGUS measurement software measurements will define the position of each dot in each one photo, and then use the method "photogrammetry computing", depending on the angle photograph of data to calculate the spatial coordinates of each dot. These dot matrix, you can define the shape of the part after deformation. Further, by calculating the change in distance between the respective dots, the parts can be obtained "in-plane deformation (lateral distortion)". Using these data to calculate the strain distribution of parts, hot spots and sheet thickness variation (assuming constant volume). Strain measurement accuracy of the system can reach 0.2 percent, and can also handle more than 100,000 data points. As calculated on the basis strain length and 1 mm dot pitch usually to 6 mm, if the appropriate choice of motherboard in etching can generate additional spacing values ??required by customers. Strain distribution and thickness variation results in color temperature map displayed on the three-dimensional model of the part after molding, by normal rotation operation, you can better understand the measurements and the forming process. ARGUS system components system consists of a high-resolution CCD camera, image processing systems, and ARGUS sheet metal forming analysis software. Portable design, applicable to any place. The system was developed in collaboration with the automotive industry to help them enhance the product development stage sheet metal forming process is understood to verify the results of a conventional molding simulation software, as well as optimization and monitoring of the production process. ? ARGUS technology to automatically identify and calculate the position of the grid points, while sample strain calculations done automatically by the system;? The system does not require calibration and sample surface to be processed can be measured directly;? Process can be manually intervention, but not necessarily;? can be measured against the local area, and just a few minutes time calculations;? there is no limit on the size and complexity of the sample; the? automatic calculation process can ensure high repeated accuracy? ARGUS is suitable for any environment, with stable performance, high measurement accuracy and dot density, high computing speed, and good operability, can greatly improve the productivity of sheet metal forming process! Model specifications and technical parameters of the system specifications ARGUS 2 M / 5M / 12M weight of 1.3 Kg suitcase size 470 × 390 × 190 mm3 12 Kg camera resolution (2M) 1600 × 1200 Pixel Camera Resolution (5M) 2592 × 1944 Pixel resolution camera rate (12M) 4280 × 2840 Pixel data transfer Firewire or Wireless measuring range 100 mm2 -. >> m2 can be freely adjusted measuring grid points Typ 10 000 to 300 000 strain range 0.5% up to> 300% strain accuracy Up to 0.2% Calibration Self-calibration