IMPROVEMENT OF CONSTRUCTION OF THREE-DIMENSIONAL MODELS OF TENSION SPRINGS FOR IMPLEMENTING THEIR DRAWINGS IN THE AUTODESK INVENTOR PACKAGE

Abstract

The work proposes developments to improve the modeling of parametric spatial models of tension springs, complementing the functionality of the Autodesk Inventor package to reduce design time and execution of drawings in accordance with the current standard (GOST 2.401-68).

The solution to the problem was carried out using the capabilities of the Autodesk Inventor package and the modified theory of circular helical surfaces, which considers the issue of tangency and intersection, methods of forming such surfaces with detailed coverage of their properties and geometric parameters. At the same time, the theory of helical lines with circular helical surfaces, obtained on the basis of helical lines and a circle as a generatrix, with a deep study of the geometric properties of helical lines with a monotonically variable pitch and with a circular pitch, is distinguished by its generality in the approach, the mathematical rigor of the proofs of the theory.

The work provides for the possibility of modeling parametric spatial models of tension springs for building drawings, and for carrying out studies of the stress-strain state. It is also possible to change the position of the hooks and the two transitions between the hooks and the spring relative to the spring axis.

New algorithms and approaches are proposed that make it possible to significantly expand the range of possible changes in the information of the analytical and geometric parametric spatial model of the tension spring. At the same time, the design time for three-dimensional models of tension springs is reduced, their drawings are made in accordance with applicable standards. The method of modeling the parametric spatial model of the tension spring has been tested and introduced into the educational process and can be applied in production to optimize the development of design documentation at the design stage.

Key words: tools, parameterization, hook, transition, work coils, intersection of coils, circular helical surfaces, tension spring, design documentation, Autodesk Inventor.