CREATING A PARAMETRIC MODEL OF AN AUTOMOTIVE ASSEMBLY IN THE AUTODESK INVENTOR SOFTWARE

Abstract

Computer modeling is an integral part of modern technologies. The ability to build 3D models is provided by appropriate application program packages, among which Autodesk Inventor is one of the most effective and widespread. It provides a wide range of tools both for building parametric models of individual parts and assemblies based on them. But not always users who work in Autodesk Inventor pay attention to parameterization of models. Although it is the parametric computer three-dimensional model of the product that allows you to quickly reproduce changes in its geometry in a fairly wide range. It allows you to quickly evaluate all visual, operational, economic pros and cons of a particular design and find optimal options for its implementation.

The work proposes an algorithm for using the Autodesk Inventor program to build parametric models of machine-building units, all elements (details) of which are adaptively connected. Recommendations have been developed for the most effective use of all available capabilities of the computer program at each stage of building a parametric assembly model.

To test and illustrate the application of the algorithm, a step-by-step process of building a parametric model of a wheel brake cylinder of a car is given. Recommendations for choosing the basic part of the machine-building unit are given. It is shown how the application of the iLogic function allows you to add or remove certain elements of the model form from the program browser by changing the control parameters. The authors considered various aspects of the application of derivative components both on the basis of previously created parts and on the basis of previously created assembly; achieving an adaptive connection between details; filling in the table of user parameters for individual parts; creating parts directly in the assembly environment. The expediency is analyzed and an example of creating an external Excel table containing the main geometric parameters of a machine-building unit, which allows you to quickly change the main characteristics of all elements of the unit model, is provided. It is appropriate to use the obtained results in the educational process.

Key words: geometric parameterization, wheel brake cylinder, computer modeling, Autodesk Inventor, educational process.