Research On Parametric Modeling Method And System Design For Mining Equipment

In recent years,the coal mining industry has continued to develop steadily,and the demand for mining equipment is also increasing.The traditional mining equipment model design system has problems such as long development cycles.However,with the development of computer-aided design and computer graphics and other technologies,based on parameters Mine equipment design based on modeling has become an important technical means for the design and manufacture of mechanical products.Parametric modeling method can effectively solve the problem of long product development cycle,and intuitively reflects the actual situation of product design and development.Therefore,it has important theoretical and practical significance for the research of mining equipment parametric modeling method.This paper designs and implements a parametric modeling method based on the CSG construction principle and improved constrained Delaunay triangulation algorithm,and applies it to the roadheader equipment modeling system.This method can effectively improve the design efficiency of products and meet the needs of users who design products with different specifications.The main research work of this article is as follows:(1)An improved constrained Delaunay triangulation algorithm based on tree structure is proposed.The algorithm first uses the point-by-point insertion method to construct the initial triangle network in the non-constrained domain.The tree structure node pointer is used to quickly locate the triangle to improve the speed of the triangle network.Then,the top triangle and the insertion point are used to locate the first triangle to further improve the embedding.The edge influence domain search algorithm improves the efficiency of the fast search of the influence domain,enables the constrained edges to be reasonably embedded in the triangle network,and reduces the triangle network reconstruction;finally,5 coal mine terrain data points are used for testing,and the time complexity and different thresholds of different algorithms are respectively tested The efficiency of the algorithm is compared and analyzed.The experiments show that the efficiency of the algorithm in the process of constrained triangulation is significantly improved.(2)Analyze the system requirements,and design and implement a parameterized modeling system for the roadheader on this basis.The system is based on the proposed improved constrained Delaunay triangulation algorithm,using the Blu-ray digital mine software as the platform and VB6.0 as the programming tool to realize the secondary development on the Blu-ray platform.The system uses the normal volume normal vector stretching algorithm to convert the two-dimensional area to the three-dimensional model entity.The interface parameters of the system adopt the human-computer interaction mode,and the internal parameter size programming method is used to realize the rapid design and three-dimensional visualization of the model.