Considerations on 3D printing joints parts

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Zapciu, A.^1 ; Tasca, G.D.^2 ; Amza, C.G.^2

Machines and Manufacturing Systems Department, University Politehnica of Bucharest, Romania^1

Materials Technology and Welding Department, University Politehnica of Bucharest, Romania^2

关键词: Change process;    Fabricated parts;    Joint tolerances;    Manufacturing methods;    Process parameters;    Surface finishes;    Surface precision;    Translational joints;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/2/022061/pdf
DOI  :  10.1088/1757-899X/400/2/022061

来源: IOP

【 摘 要 】

One of the unique capabilities of additive manufacturing over classical manufacturing methods is the possibility to create interlocking parts without the need of assembly. This is useful for the creation of rotational and translational joints in demonstrative or functional 3D models. This paper focuses on analyzing the process parameters which need to be considered when fabricating parts with cylindrical or spherical rotating joints using material extrusion 3D printing. Several aspects are analyzed, such as joint tolerance and clearance, surface finish requirements, surface shape and dimensions or surface precision and trueness as they result from the converting ideal CAD files to the common file formats used in additive manufacturing. The paper also searches to identify the extent to which it is possible to dynamically change process parameters such as layer height and width or depositing speed in order to improve the characteristics of the inner and outer surfaces of the joints, without influencing other areas of the fabricated parts.