Solving the Problem of Technological Adaptation of the Shaping Process of Thin-Shell Parts on the RO-3M Automated Stretch-Strengthening Press

The solution to the problem of technological adaptation of the sheet metal forming process by stretch forming is implemented in the form of additional tabs in the AviaForm software module, enabling the automation of several functions for technological adaptation of the control algorithm on a virtual model of the RO-3M press. Automatic selection of the sheet metal length has been introduced, with the ability to change the values of the technological allowances. It is now possible to calculate the average elongation of the sheet metal after “summing” all sections along the line formed by the working surface of the stretching punchin several “significant” sections, including the largest section, while also not forgetting the left and right allowance sections of the sheet metal before the press clamps. A method has been developed that enables the calculation of average elongation when changing the length of a sheet metal blank at the initial stage of the stretch forming process evaluation in the AviaForm software module, rather than at the final stages of process modeling in the QForm base program. The surface geometry of the stretch punch corresponding to the shell part surface remains unchanged, requiring no additional adjustments. Additional techniques are created in the AviaForm module that, when rotating the stretch punch model around a vertical axis, insert the position of the upper surface ridge into the vertical longitudinal plane of symmetry of the RO-3M virtual press. The AviaForm software module includes pre-defined “templates” for determining the optimal stretch forming scheme for a sheet metal blank of the appropriate length. The use of templates supports an auto-fill function with a preliminary selection of stepwise movements of the RO-3M press working elements, as well as the input of recommended stepwise movement values for automatically launching the calculation scheme in the QForm base program.