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首页> 外文期刊>International Journal of Computer Integrated Manufacturing >Evaluation of workpiece orientation and configuration of multi-axis machine tool using visibility cone analysis
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Evaluation of workpiece orientation and configuration of multi-axis machine tool using visibility cone analysis

机译：使用可见性锥分析评估多轴机床的工件方向和配置

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Multi-axis machining of a complex surface is not only efficient but also reduces workpiece set-up errors. However, engineers usually rely on experience when determining set-up orientation and often cannot finish complex surfaces in one set-up. In this paper, a rational evaluation method for workpiece orientation and configuration of machine tool before tool path planning is proposed to increase the efficiency and reliability of process planning.By incorporating the visibility cone into workspace analysis, a software module is constructed in this research for optimum workpiece orientation and configuration of machine tool. First, the configurations of three-, four- and five-axis machine tools were synthesised, and the workspace was then analysed using form-shaping function. Both position vector and normal vector of each point along the u and v directions in the machining surface were employed to calculate the visibility range as the point of the visibility cone. In 3-axis machining, all normal vectors of the surface were projected on a unit sphere. All normal vectors were ensured to be within the visibility range of the ball-mill cutter as the workpiece set-up orientation changed. In 4-axis machining, the intersection between the visibility cone of each point and the workspace was obtained by changing the set-up orientation. In 5-axis machining, according to different workspaces of 5-axis machine tools, the visibility range of the machining surface was determined to yield the intersection between the visibility cone and the workspace by changing the workpiece orientation.The proposed method for evaluating manufacturability has been demonstrated to generate optimum workpiece set-up orientation and the suitable configuration of machine tools. Tool interference with workpiece surface can be avoided, which can help improve the planning of tool path.View full textDownload full textKeywordsmanufacturability analysis, visibility cone analysis, multi-axis machine tool, workpiece orientationRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09511921003700861
机译：复杂表面的多轴加工不仅效率高，而且减少了工件设置错误。但是，工程师在确定装配方向时通常依靠经验，并且常常无法在一个装配中完成复杂的曲面。为了提高工艺规划的效率和可靠性，本文提出了一种合理的评价机床路径规划前的机床方向和构型的评价方法。最佳的工件方向和机床配置。首先，对三轴，四轴和五轴机床的配置进行综合，然后使用成形函数分析工作空间。沿加工表面中u和v方向的每个点的位置矢量和法向矢量都用于计算可见性范围作为可见性圆锥体的点。在三轴加工中，曲面的所有法线向量都投影在单位球体上。随着工件设置方向的改变，所有法向矢量都确保在球磨机的可见范围内。在四轴加工中，每个点的可见锥和工作空间之间的交点是通过更改安装方向获得的。在5轴加工中，根据5轴机床的不同工作空间，确定加工表面的可见范围，以通过更改工件方向来确定可见锥与工作空间之间的交点。被证明可以产生最佳的工件设置方向和合适的机床配置。可以避免刀具与工件表面的干涉，这有助于改善刀具路径的规划。查看全文下载全文关键字可加工性分析，能见度圆锥分析，多轴机床，工件方向相关的var addthis_config = { ，services_compact：“ citeulike，netvibes，twitter，technorati，美味，linkedin，facebook，stumbleupon，digg，google，更多”，发布号：“ ra-4dff56cd6bb1830b”}；添加到候选列表链接永久链接http://dx.doi.org/10.1080/09511921003700861

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