| Summary: | 碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 101 === Under manufacturing industry''s constant demand for progress, the five-axis machine tool has gradually replaced the three-axis machine tool, and substantially increased the processing efficiency, product quality and business profits. With the rapidly advancing computer technology, the efficient numerical control programs related to cutting technology are booming.
In the past, the time spent in the five-axis processing to generate a tool path based on the engineering drawing varies according to the setting precision of the parameters, generally speaking a processing with higher demand on precision would cost more time to generate the tool path. If the cutter selected for the generated tool path is different from the actual one, the user would have to get back to the CAM software to modify the related settings, and then redo the tool path generation process. This is a highly time consuming cycle. This study uses the contact point’s data provided by UG, coupled with the cutter''s tip point and tool axis vector data provided by the cutter location file, to deduce an algorithm of bi-directional conversion of the cutter location files with three typical cutters - the ball cutter, flat-end cutter and ball nose cutter. This paper demonstrates how a PC-based controller can save users time by not having to get back to the CAM software to recalculate the cutter location due to the unmatched setting of cutter size or type. Instead, through a developed Windows interface on the controller, users can make quick conversion and replacement, and even use the OpenGL to establish a virtual machine for simulation on the controller.
In this paper, a stand-alone cutting tool is used to generate a cutter location file. Through a Windows interface, the developed algorithm allows users to get an approximate cutting result with a cutter of same type but different size or with a cutter of different type. And then the solid cutting software VERICUT is used for verification, followed by a real machining to get experimental results.
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