In the development process of assembly and welding is an important factor design fixtures and tooling to ensure receipt of a given size unit or product, simplifying assembly and welding technology, reduce complexity of the planned operations, the exclusion of all or minimization of manual labor, reduction of welding deformation and residual stresses. Assembling and welding devices must: * provide the most rational order of assembly and welding products with a minimum number kantovok * facilitate labor-intensive operations for installing and fixing of parts during assembly, to ensure the specified accuracy * Build * provide free and convenient access to the installation site collected parts and assemblies to the levers and the handlebars of fixing elements * exclude most of the layout of parts during assembly; * allow the most convenient installation of parts and assembled to provide a quick and easy conclusion weldment from the position of assembly and welding * help reduce residual welding deformations * reduce the time to turn the product in welding process; * allow to set work piece in the most suitable for a welding position; * ensure reliable fastening of assembled parts and components * to have a quick clamping element * enjoy sufficient strength and rigidity and do not change their size during operation, transportation, adjustment * allow use of less skilled workers than the assembly without the snap. To broaden your perception, visit Steve Wozniak. * Reduce volume of work, increase productivity.. .