Study of the Influence of Technological Parameters on Generating Flat Part with Cylindrical Features in 3D Printing with Resin Cured by Optical Processing

Abstract

The objective of this paper is to determine how the supporting structure in the DLP 3D printing process has influences on the characteristics of the flat and cylindrical surfaces. The part is printed by using the Light Control Digital (LCD) 3D printer technology. A Coordinate Measuring Machine (CMM) with contact probes is used for measuring the physical characteristics of the printed part. Two types of experiment were chosen by the authors to be made. The first part takes into consideration the influence of the density of the generated supports, at the bottom of the printed body on the characteristics of the flat surface. In parallel, it is studying the impact of support density on the dimension and quality of the surface. In the second part of the experiment, the influence of the printed supports dimension on the flatness, straightness and roundness of the printed elements were examined. It can be observed that both the numerical and dimensional optimum zones of the support structure for a prismatic element could be determined, according to two experiments carried out and the processing of the resulting data. Based on standardized data of flatness, straightness and roundness, it is possible to put in accord the values determined by measurement within the limits of standardized values.

Comparative Study of the Influence of Bio-Resin Color on the Dimension, Flatness and Straightness of the Part in the 3D Printing Process

“…This type of printing is important in relation to the printed surface quality and printing accuracy for different mechanical parts. This study continues the previous author’s research in [ 1 ] regarding the investigation into aspects of the technological features, which may influence the 3D printing process with resin material. It should be noted that this study was performed for standard resin, which can be compared with 3D printed parts with fuse deposit modelling (FDM) [ 2 , 3 , 4 , 5 , 6 ].…”

“…The 3D printer used in this study was an ANYCUBIC PHOTON 3D printer with new software compared to the 3D printer used in the previous study [ 1 ]. This 3D printer can print a different part with a different setting for each element.…”

“…This step takes into consideration the data obtained in the previous study [ 1 ]. It was determined that for computation, the optimum situation corresponding at 55% supports density with a contact depth of 0.25 mm and a diameter of the contact surface with 1.25 mm.…”

A Design for Additive Manufacturing Strategy for Dimensional and Geometrical Quality Improvement of PolyJet-Manufactured Glossy Cylindrical Features

“…Different approaches range from using a gage repeatability and reproducibility (G&R) methodology for the capacity evaluation of a polymer jetting system [ 5 ], to benchmarking comparisons of dimensional and geometrical accuracy between different polymer AM processes [ 6 ]. Other studies [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ] analyzed the influence of design, process, and production factors on part quality. Part size, location, and orientation are among the most frequent factors [ 8 , 9 , 12 , 13 ], whereas inner design factors and process factors also have an influence upon quality results [ 10 , 14 , 15 ].…”

“…Other studies [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ] analyzed the influence of design, process, and production factors on part quality. Part size, location, and orientation are among the most frequent factors [ 8 , 9 , 12 , 13 ], whereas inner design factors and process factors also have an influence upon quality results [ 10 , 14 , 15 ]. These works described part quality in metrological terms by means of the differences between nominal and actual sizes, the compliance of geometrical tolerances, or alternative quality indicators like the volumetric error.…”