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Machines
Special Issues
Coordinate Measurements of Free-Form Surfaces
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Coordinate Measurements of Free-Form Surfaces

A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Machine Design and Theory".

Deadline for manuscript submissions: 31 July 2025 | Viewed by 847

Special Issue Editor

Dr. Marek Magdziak

E-Mail Website
Guest Editor
Department of Manufacturing Techniques and Automation, Faculty of Mechanical Engineering and Aeronautics, Rzeszów University of Technology, 35-959 Rzeszów, Poland
Interests: metrology of geometrical quantities; coordinate metrology

Special Issue Information

Dear Colleagues,

This Special Issue concerns various aspects of measurements of free-form surfaces of complex products that are performed, among others, using CNC machine tools (on-machine measurement). The metrology of geometrical quantities and the coordinate measuring technique are the important parts of the product production process. The measurements of parts characterized by complex geometrical shapes are often conducted in, e.g., automotive and aviation industries. The accuracy of coordinate measurements of free-form surfaces depends on various factors, e.g., environmental conditions, algorithms of inspection software of measuring systems, and geometrical deviations of machines. In addition, users of coordinate measuring systems must plan the right measurement strategy to achieve the highest measurement accuracy. The measurement strategy may include different methods of distribution of measurement points, scanning velocities, and algorithms of probe radius correction.

Dr. Marek Magdziak
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • on-machine measurement
  • coordinate metrology
  • free-form surfaces
  • measurement strategy

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Published Papers (1 paper)

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Research

23 pages, 10547 KiB  
Article
Effect of 3D Printing Orientation on the Accuracy and Surface Roughness of Polycarbonate Samples
by Paweł Turek, Anna Bazan and Marcin Bulicz
Machines 2025, 13(1), 9; https://doi.org/10.3390/machines13010009 - 27 Dec 2024
Viewed by 435
Abstract
The study evaluates models produced using fused deposition modeling (FDM) technology in five orientations, fabricated from polycarbonate (PC) material with a FORTUS 360mc printer. The models included simple shapes (planes and cylinders) and complex free-form surfaces. Accuracy was assessed using a GOM Scan [...] Read more.
The study evaluates models produced using fused deposition modeling (FDM) technology in five orientations, fabricated from polycarbonate (PC) material with a FORTUS 360mc printer. The models included simple shapes (planes and cylinders) and complex free-form surfaces. Accuracy was assessed using a GOM Scan 1 scanner and GOM Inspect 2019 software, focusing on 3D deviations and dimensional and geometric deviations (form, position, and orientation, which have not yet been analyzed in similar studies and may limit the usage of the printed elements). Surface roughness was analyzed using a MarSurf XR profilometer, measuring Ra and Rz parameters. All models were characterized by a predominance of negative 3D deviations. The analysis of variance showed no effect of model orientation on the values of linear dimensional deviations and geometric deviations. The largest deviations were negative and associated with the size of the models. The average value of the absolute deviation of linear dimensions associated with the size of the model was 0.30 mm. The average value of the absolute deviation of other linear dimensions was 0.07 mm. The average value of orientation and position deviations for each model varied in the range of 0.15–0.20 mm, and for form deviation 0.16–0.20 mm. One of the models had a higher surface roughness (Ra = 17.2 µm, Rz = 71.3 µm) than the other four models (Ra in the range of 12.7–13.8 µm, Rz in the range of 57.2–61.2 µm). During the research, three distinct surface types were identified on the models. The research indicated the validity of taking surface type into account when analyzing its microgeometry. Full article
(This article belongs to the Special Issue Coordinate Measurements of Free-Form Surfaces)
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