Adam Gaska, Jerzy Sladek, Ksenia Ostrowska, Robert Kupiec, Marcin Krawczyk, Wiktor Harmatys, Piotr Gaska, Maciej Gruza, Danuta Szewczyk, Renata Knapik, Artur Kmita
Advances in modern manufacturing techniques implies more efficient production but also new tasks for coordinate metrology and producers of Coordinate Measuring Machines (CMMs). Main aim here is accuracy improvement. The solutions used regarding CMM construction are easy and it is hard to improve it now. So accuracy improvement is done mainly using sophisticated mathematical algorithms that are responsible for correction of relevant errors. Different types of errors could be compensated, including: probe head errors, machine dynamics errors and most of all machines geometrical errors. Almost...
TC14 ISMQC 2013
· TC14
· 2013
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Robert Schmitt, Tilo Pfeifer, Yu Cai, Allan Oliveira Da Silva, Philipp Jatzkowski
Automated robotic assembly on moving objects, called as assembly in motion, demands that the assembly robot is synchronised in all degrees of freedom to the moving workpiece, on which assembly parts are installed. Currently this requirement cannot be met due to the lack of robust measurement of the 3D position and the trajectory of the moving workpiece. In this paper, an assembly robot-guided monocular camera system approaching this problem of the trajectory measurement is introduced. The experimental results show the proposed method is able to measure arbitrary trajectories of the assembly...
TC14 ISMQC 2013
· TC14
· 2013
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Ingo Lindner, Tim Eichner, Jerzy Sladek, Michal Wieczorowski
The increasing demand of high precision machine elements manufactured in mass production results in a target conflict with respect to quality control of the production lots, esp. if metal forming techniques are the production principles. Due to high process forces, kinematic movements of forming tools and imprinted change of material properties during tool and workpiece interaction, a change of the workpiece position within the manufacturing processes generates quality losses in the resulting geometries. Today, SPC based post-process or in-situ measurements are the basis for the quality...
TC14 ISMQC 2013
· TC14
· 2013
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Magdalena Niemczewska-Wójcik, Artur Wójcik
The quality of machined surfaces, resulting from the manufacturing process and conditioning their functionality, is determined by the surface geometric structure (SGS). There is a close relationship between surface properties, shape, qualitative imagining of the surface topography, technique and technology employed for machining purposes. If a given surface is to have practical applications in engineering, the correct technological process needs to be chosen. In the paper, various techniques used for measuring of the surface geometric structure were briefly described. The results of the...
TC14 ISMQC 2013
· TC14
· 2013
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Siniša Delcev, Jelena Gucevic, Vukan Ogrizovic
During the accreditation, but also in its maintenance, calibration laboratories must prove their competence. According to the ISO/IEC 17025:2005 standard competence is proved by participating in interlaboratory comparisons or participation in PT (proficiency testing) schemes. However, some accreditation bodies, such as Serbia, insist on participation in PT schemes and not accredit calibration laboratory, or even take away accreditation, unless they are involved in these activities. Of course, participation in interlaboratory comparisons is default. Unfortunately, PT schemes are not organized...
TC14 ISMQC 2013
· TC14
· 2013
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Robert Refflinghaus
Picking and packaging is the last step between the company and their customers. The returns succeeding the order cost up to the tenfold. In order to recognize the occurrence of non-conformities on time before delivery to the customers and to decrease the failure removal costs within the returns processing, quality inspections have to be integrated in the routing of picking and packaging. This leads to complex interactions between individual picking and inspection processes. Therefore, quality, costs and cycle time are difficult to estimate. The problem can be solved by using simulation,...
TC14 ISMQC 2013
· TC14
· 2013
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Robert Schmitt, Martin Peterek
Flexible manufacturing processes for high quality products at low costs are one of the main research objectives in the field of production technology. The quality inspection of large or complex workpieces manufactured on machine tools often takes place beside the production line. To assure the traceability of the quality inspection the features are measured on a CMM in an isolated measurement room. The high invest for a CMM and influences like transport, handling and the loss of the original set up show the need for a machine tool integrated traceable measuring process for product’s quality...
TC14 ISMQC 2013
· TC14
· 2013
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Pawel Pawlus, Wieslaw Grabon, Rafal Reizer
This paper presents study of variation of areal parameters on machined surfaces. These surfaces were measured using stylus equipment. After form removal, parameters from ISO 25178 standard were computed using TalyMap Gold software. Then these textures were divided into the smaller sub-areas, for which the parameters were calculated again. Relative deviations between parameters from measured areas and sub-areas were computed as well as the coefficients of variation of parameters, being the ratios of standard deviations to mean parameter values.
TC14 ISMQC 2013
· TC14
· 2013
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Wieslaw Grabon, Pawel Pawlus, Rafal Reizer
The aim of this work is to compare various methods of oil capacity calculation for surfaces with isolated pockets. These surfaces were measured by stylus profilometer. In reference method, oil capacity was calculated by summation of volume contained in all the separate dimples from measured surface. Oil capacity was calculated also on the basis of material ratio curve using the Svk and Sr2 parameters from the Sk group (areal extension of ISO 13565-2 standard). The second procedure was developed on the basis of Sq parameter group (areal extension of ISO 13565-3 standard). The third method is...
TC14 ISMQC 2013
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· 2013
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Liviu Adrian Crisan, Grigore Marian Pop
This paper presents the results of investigations concerning the influence of process temperatures, at the drilling of carbon fiber reinforced composites, on the quality of the drilled hole (roughness, tolerances, burr formation). With the increasing need of lightweight design, carbon fiber reinforced plastics (CFRP) are a feasible alternative to engineering materials. They have excellent properties and are being extensively used in a variety of engineering applications (aerospace industry, automotive and the wind energy industry). Drilling is the most common machining process applied to...
TC14 ISMQC 2013
· TC14
· 2013
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