Hansen, Hans Nørgaard

Quagliotti, Danilo

Salaga, Jacek

Tosello, Guido

Two sets of 5 green and 5 sintered mechanical parts, manufactured by micro powder injection moulding (μPIM), were measured using an optical coordinate measuring machine (OCMM) and a focus-variation microscope (FVM). The examined features of size, including diameter, radii and distances, span in the range of (10-1–101) mm. Comparing the corresponding measurements from the two instruments, a relative maximum deviation of 8 % was found for the linear dimensions of the green parts and a relative maximum deviation of 6 % for the ones of the sintered parts. The maximum relative deviation of the radii was 17 % for the green parts and 30 % for the sintered parts (relative deviations have been evaluated considering focus-variation measurements as reference).OCMM showed some problems in the detection of the smallest dimensional features (above all radii) where the presence of defects on the edges, quite typical for parts produced by μPIM, was particular critical for the measurements.The extraction of results obtained from FVM was less critical because performed with a dedicated post-processing software which allowed to better define the measured dimensions. Furthermore, the chance to measure other geometrical features, such as surface texture and flatness, may depict FVM measurements as more attractive. However, measurements should be suitable for in-line quality control, in a production environment, where fast cycle time is required and measuring times are more compatible to those of the OCMM

Online Research Database In Technology

Comparison of measurements from optical CMM and focus-variation microscope of a μPIMmechanical part - DTU Orbit (09/11/2017) Comparison of measurements from optical CMM and focus-variation microscope of a μPIM mechanical partTwo sets of 5 green and 5 sintered mechanical parts, manufactured by micro powder injection moulding (μPIM), weremeasured using an optical coordinate measuring machine (OCMM) and a focus-variation microscope (FVM). Theexamined features of size, including diameter, radii and distances, span in the range of (10-1–101) mm. Comparing thecorresponding measurements from the two instruments, a relative maximum deviation of 8 % was found for the lineardimensions of the green parts and a relative maximum deviation of 6 % for the ones of the sintered parts. The maximumrelative deviation of the radii was 17 % for the green parts and 30 % for the sintered parts (relative deviations have beenevaluated considering focus-variation measurements as reference).OCMM showed some problems in the detection of thesmallest dimensional features (above all radii) where the presence of defects on the edges, quite typical for partsproduced by μPIM, was particular critical for the measurements.The extraction of results obtained from FVM was lesscritical because performed with a dedicated post-processing software which allowed to better define the measureddimensions. Furthermore, the chance to measure other geometrical features, such as surface texture and flatness, maydepict FVM measurements as more attractive. However, measurements should be suitable for in-line quality control, in aproduction environment, where fast cycle time is required and measuring times are more compatible to those of theOCMM. General informationState: PublishedOrganisations: Department of Mechanical Engineering, Manufacturing Engineering, Technical University of DenmarkAuthors: Quagliotti, D. (Intern), Salaga, J. (Ekstern), Tosello, G. (Intern), Hansen, H. N. (Intern)Number of pages: 2Publication date: 2016 Host publication informationTitle of host publication: Proceedings of euspen’s 16th International Conference & ExhibitionMain Research Area: Technical/natural sciencesConference: euspen’s 16th International Conference & Exhibition, Nottingham, United Kingdom, 30/05/2016 - 30/05/2016Micro Powder Injection Moulding (μPIM), Quality Assurance, Focus-variation Microscope, Optical CMMPublication: Research - peer-review › Article in proceedings – Annual report year: 2016 

Comparison of measurements from optical CMM and focus-variation microscope of a μPIM mechanical part

http://orbit.dtu.dk/en/publications/comparison-of-measurements-from-optical-cmm-and-focusvariation-microscope-of-a-pim-mechanical-part(b9e2ea47-ec57-4283-9e92-4221303888a6).pdf?nofollow=true&rendering=long

Comparison of measurements from optical CMM and focus-variation microscope of a μPIM mechanical part

Abstract

Similar works

Full text

Available Versions

Online Research Database In Technology