Additive Manufacturing

MAR 2018

ADDITIVE MANUFACTURING is the magazine devoted to industrial applications of 3D printing and digital layering technology. We cover the promise and the challenges of this technology for making functional tooling and end-use production parts.

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Page 61 of 67

MARCH 2018 Additive Manufacturing RAPID 2018 ON DISPLAY 60 Software Toolkit Supports 3D Modelling MachineWorks Ltd., Booth 2037 Polygonica from MachineWorks delivers a flexible and interac- tive software toolkit for shaping 3D models. The functionality provided within Polygonica kernel is said to help create, pro- cess or optimize high-end polygonal models faster. Polygonica's geometrical modelling feature enables users to easily manipulate polygon meshes within specified tolerances. For example, Polygonica enables the design of 3D objects not just based on triangles but on recognized structures, such as high-level machining features on a solid model. It also provides embossing or engraving regions of a solid and localized offsetting of the surface of a solid while managing the surrounding topology. Additionally, Polygonica modelling capabilities can mod- ify solids using smoothing and fairing algorithms for more fluid designing. According to MachineWorks, the algorithms behind Polygonica provide accurate calculations of the wall thickness on a solid which is essential for the quality of the 3D model. Similarly, the Polygonica modeller also enables fast calculation of lattices to provide internal structure for a hollow solid. Binder Jetting 3D Printer Expands Dust Management Options ExOne, Booth 904 Large-Frame 3D Printer Supports Dual-Laser Stereolithography UnionTech, Booth 1710 The large-frame RSPro 1400 stereolithography machine from UnionTech measures 1,400 × 700 × 500 mm. The system offers dual-laser, simultaneous printing without visible weld lines. Scanning speed ranges to 18 m/sec. The 3D printer offers closed-loop control strategy for platform movement, laser power, material level, tempera- ture and vacuum. A carbon fiber enhanced recoating blade helps to avoid deformation. Additional features include automatic calibration and one-button start. ExOne showcases the Innovent+ binder jetting 3D printer, as well as expanded dust management options for both this system and the original Innovent. Based on its predecessor, the Innovent+ offers increased powder handling capa- bilities. The system comes with an upgraded recoater design for material flexibility and ease of use. The recoat- er can be quickly removed for system cleaning or powder change-over, and each recoater comes with four screen configurations which allow for greater material flexibility. Screens can easily be switched in and out to meet the needs of the powder. Expanded dust collection options will also be on display. Dust collec- tion has been integrated into both the Innovent and Innovent+ systems through the addition of down-draft duct work that pulls powder from around the buildbox. Dust collection options and down- draft tables for depowdering that are designed to fit the systems' buildboxes are available as well.

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