3D Printing

3D打印在theta和r轴上

Hackadaycontributor泰勒·安德森已经开发了一种新型的3D打印系统,该系统放弃了典型的XY轴,以旋转印刷床和多个独立控制的挤出机头。这个Theta 3D printer他说,可以同时在同一物体上使用不同的印刷材料,而不会减少构建量或负面影响性能。

theta_3d printer

基本的笛卡尔3D打印机使用最常见的轴配置,因为它最容易编程,并且大多数加工工具已经使用了相同的系统。但是,笛卡尔风格的打印机需要较重的打印头移动,这可以减慢机器并降低性能。使用多个挤出机还需要减少构建量,并且它们通常在构建中心附近失去分辨率。三角洲3D打印机更快,但是它们也牺牲了构建量,并且使用多个挤出机在打印机的风格上仍然很少见。

However a 3D printer that uses a “theta” – or rotational – axis combined with an R axis has less mass so it doesn’t sacrifice speed, maintains print resolution even near the center of the prints, and can easily use multiple extruders without build area reduction. Anderson’s Theta printer is optimised for four independent extruders that allow users to print objects in multiple colors and materials. The printer can work with any type of extruder that uses any type of material so it could create objects in plastic. It can even 3D print something with multiple colors or chocolate without worrying about the heads running into the object or the different colors smudging and running together.

theta_mess 3d printer

theta轴是构建平台的旋转方向,而R轴是从平台中心到挤出机的距离。由于这种独特的配置,四个挤出机是完全自主的,并且可以同时打印而无需任何速度或印刷质量牺牲。虽然其他挤出机和电动机可能会使打印机更加昂贵,但它具有模块化设计,因此最终版本可以包括易于更换的零件。它也可以很容易地将其转换为3D扫描仪,并且可以将头部换成铣削头,从而使此打印机配置非常适合高度适应性的全合一3D打印系统。

您可以使用两个独立的打印头观看Theta打印机的视频:

Anderson’s theta printer includes four extruders and a rotating heated print bed driven by ten independent stepper motors. The rotational platform has a build volume of 304mm (12inch) diameter with a 150mm (6inch) Z axis. The printer is completely open source and the parts list can be located onGitHub。您也可以阅读有关构建的所有信息Hackaday.io