Development of a CAPP system for multi-tasking machine tools to deal with complicated machining operations
Development of a CAPP system for multi-tasking machine tools to deal with complicated machining operations
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DOI：
10.1299/jamdsm.2020jamdsm0006
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Yuki Inoue;K. Nakamoto
中科院分区：
文献类型：
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作者：
Yuki Inoue;K. Nakamoto
总是有强大的动力来缩短机械产品的制造业时间。通过多任务机械工具寻求更高的效率，引起了人们在加工领域的许多优势的关注。有许多不同类型的多任务机床结构，它们具有转弯和铣削功能。因此，加工操作通常很复杂，生成数值控制（NC）程序需要大量时间和劳动。为了减少准备时间，需要计算机辅助过程计划（CAPP）系统来自动确定加工过程参数，例如加工序列，切割工具，切割条件。这项研究旨在开发一个CAPP系统，用于使用两个面对纺锤体来处理复杂的加工操作的多任任务机床。引入了两个面对旋转纺锤体之间的工件的切换开关，以意识到复杂目标形状的6面加工一个工件形状和目标形状分别分为与主转弯纺锤体侧和子旋转纺锤体相关的两个域。然后，可以根据假定的主轴侧从每个域识别加工功能。此外，可以通过识别通过相同的加工方法同时加工的加工功能来实现使用复数和铣削功能的平行加工。案例研究的结果证实，开发的CAPP系统对多任任务机床的复杂加工操作有效。
There is always strong impetus to shorten the manufacturing lead-time of mechanical products. Seeking higher efficiency through multi-tasking machine tools has attracted attention for its many advantages in the field of machining. There are a lot of different kinds of multi-tasking machine tool structures that have both turning and milling functions. Therefore, the machining operations are generally complicated, and it takes a great deal of time and labor to generate numerical control (NC) programs. To reduce preparatory time, computer aided process planning (CAPP) systems are needed to automatically determine machining process parameters such as machining sequence, cutting tool, cutting conditions. This study aims to develop a CAPP system for multi-tasking machine tools with two confronting spindles to deal with complicated machining operations. Chucking switch for a workpiece between two confronting turning spindles is introduced to realize 6-face machining of complex target shapes A workpiece shape and target shape are divided into two domains related to the main turning spindle side and sub turning spindle side, respectively. Then, the machining features can be recognized from each domain according to the assumed spindle side. Moreover, parallel machining using plural functions of turning and milling can be achieved by recognizing machining features that are simultaneously machined by the same machining method. The results of case studies confirmed that the developed CAPP system is effective for NC program generation of complicated machining operations on multi-tasking machine tools.