The Parametric Drawing System of Shaft Based on Feature

Abstract:

The paper mainly studied the parametric drawing system of shaft based on feature. Firstly, the shaft was classified, and its characteristic was analyzed. Then, the special menu and image block menu of the system were designed in AutoCAD. And a friendly-interface parametric drawing system of shaft was built with geometry sculpts technology, object-oriented technology and parametric design technology, based on the platform of AutoCAD, with the development tool of Object ARX. It implemented the drawing of hardware working drawing of shaft according to the selected proportion, and improved the efficiency of the shaft design.Overview of shaftShaft is one of the main parts of machinery, depending on the axis shape; shaft can be divided into two categories: direct axis and crank shaft. According to the different load of the nature, direct axis can be divided into three types: spindle, drive shaft and the shaft. According to different shape, direct axis can be divided into two kinds: optical axis and stepped shaft. Optical axis has the following characteristics: simple shape, easy processing, less stress concentration source, optical axis is mainly used for drive shaft; Stepped shaft, in contrast to the optical axis. It is often used in the shaft. The classification of the shaft can be clearly said to use figure 1. In addition, there are some special shaft, such as the camshaft and wire soft shaft, etc.Fig. 1 Classification of the shaftOn the basis of the characteristics, the shaft information model can be considered. Usually a mechanical parts contains numerous features, shape features are the most important characteristics of these, which is the carrier of other information. We can decompose research the shape feature and think that some auxiliary features and the main features combined shape feature of axis, the main characteristics of the spatial position is adjacency relations; Auxiliary features is attached to a primary, auxiliary features can be attached to the main outline of the surface or end^[1].Combining with the actual situation of this system, we analyze the features of commonly used straight shaft parts; we obtained the shape of the feature classification results as shown in table1.Table 1 Straight shaft parts classification of shape feature

• Periodical: Applied Mechanics and Materials (Volume 757)
• Pages: 153-157
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.757.153
• Online since: April 2015
• Authors: Zhi Xue Sun*, Yang Zhang
• Keywords: Characteristic Analysis, Object Arx, Parameterized Design, Shaft

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