Screws are often used to connect 3-D printed parts to other objects. When screwing directly into printed plastic, the reliability is limited, and the connection can wear out over time. For more reliable connections, standard metal nuts are often inserted into slots designed into the object. This article presents an approach where nuts and other ferromagnetic components are integrated directly into the part while printing it. Our prototype machine is a modified Prusa-I3 fused filament fabrication printer with an electromagnetic pick and place tool. We introduce augmented slicing software, where the user can insert generic component models from a library and place them at arbitrary positions in the object. Cavities for the components and additional G-code commands for robotic placing are automatically generated and sent to the printer. A printed component tray is attached to the printbed, allowing different part configurations for each print. The pick and place unit is controlled by our OctoPrint plugin OctoPNP.

中文翻译：

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将金属部件自动原位放置到 3D 打印的 FFF 对象中

螺钉通常用于将 3D 打印部件连接到其他物体。当直接拧入印刷塑料时，可靠性有限，并且连接会随着时间的推移而磨损。为了获得更可靠的连接，通常将标准金属螺母插入设计在对象中的插槽中。本文介绍了一种在打印零件时将螺母和其他铁磁组件直接集成到零件中的方法。我们的原型机是经过改进的 Prusa-I3 熔丝制造打印机，带有电磁取放工具。我们引入了增强切片软件，用户可以在其中插入库中的通用组件模型并将它们放置在对象中的任意位置。组件的腔体和用于机器人放置的附加 G 代码命令会自动生成并发送到打印机。打印组件托盘连接到打印床上，允许为每次打印提供不同的部件配置。取放单元由我们的 OctoPrint 插件 OctoPNP 控制。