Taking spiral chute as example, a method of unfolded drawings and views about irregular spiral surface is introduced. The surface is undevelopable and too complicated to get its views or to draw unfolded drawings by m...Taking spiral chute as example, a method of unfolded drawings and views about irregular spiral surface is introduced. The surface is undevelopable and too complicated to get its views or to draw unfolded drawings by manual method. In this article, a series of the boundary equations of the spiral chute are derived by the movement rule of coal flow, and the solid and views of the spiral chute are generated based on redevelopment of SolidWorks. Unfolded drawing is drawn applying triangular development principle. The views and unfolded drawings not only are produced automatically, precisely and parameterized, but also involve more technological information. So it has an important significance on the irregular spiral surface＇s developments and processing.展开更多
A software for the management of computer aided design（CAD） drawings was developed. It can be used to classify and register information including geometric features of the drawings, and to search appropriate referen...A software for the management of computer aided design（CAD） drawings was developed. It can be used to classify and register information including geometric features of the drawings, and to search appropriate reference drawings matching the given conditions of a new design. The thumbnails of the drawings can be displayed in an order of preference and can be used to zoom and access the PDF file or CAD data of a selected drawing. The thumbnails and the data structure are two key elements of the software.展开更多
At present many CAD software products did not fully meet the requirements of National Standard 《Technical drafting and Mechanical Drawing》 that greatly affects the quality and speed of engineering design. Taking com...At present many CAD software products did not fully meet the requirements of National Standard 《Technical drafting and Mechanical Drawing》 that greatly affects the quality and speed of engineering design. Taking computer-aided design of typical mechanical parts as an example, this paper proposes an approach to develop corresponding functions in CAD software to enhance the standardization of engineering design.展开更多
基金Supported by the National Natural Science Foundation,China (No.51005237)the Postdoctoral Science Foundation,China (No.20100471407)
文摘Taking spiral chute as example, a method of unfolded drawings and views about irregular spiral surface is introduced. The surface is undevelopable and too complicated to get its views or to draw unfolded drawings by manual method. In this article, a series of the boundary equations of the spiral chute are derived by the movement rule of coal flow, and the solid and views of the spiral chute are generated based on redevelopment of SolidWorks. Unfolded drawing is drawn applying triangular development principle. The views and unfolded drawings not only are produced automatically, precisely and parameterized, but also involve more technological information. So it has an important significance on the irregular spiral surface＇s developments and processing.
文摘A software for the management of computer aided design（CAD） drawings was developed. It can be used to classify and register information including geometric features of the drawings, and to search appropriate reference drawings matching the given conditions of a new design. The thumbnails of the drawings can be displayed in an order of preference and can be used to zoom and access the PDF file or CAD data of a selected drawing. The thumbnails and the data structure are two key elements of the software.
文摘At present many CAD software products did not fully meet the requirements of National Standard 《Technical drafting and Mechanical Drawing》 that greatly affects the quality and speed of engineering design. Taking computer-aided design of typical mechanical parts as an example, this paper proposes an approach to develop corresponding functions in CAD software to enhance the standardization of engineering design.
