4/2016
• 4/2016 table of contents
Ficzere P.; Győri M.:
Transformation of dimensioning due to the appearance of 3D CAD models 5
Modern CAM systems are based on 3D CAD models to generate tool paths, therefore a traditionally prepared part drawing contains a lot of unnecessary information with regard to manufacturing. Completing a detailed 2D draw can require even more time than the designing of the given part.
Karnok D.:
Transparency in logistics networks: a reactive approach 9
In the frame of EU project of FP7 ADVANCE a new dynamic and reactive logistics system was developed. The system was tested in Great Britain by a logistics enterprise having a nationwide network. Using the new data-processing algorithms near half a million pounds were saved a year.
Kovácsné Mezei G.:
Developing visual skills in teaching technical depiction 14
Among the competences of technological professions, space perception is extremely important. Professional subjects can be done well and successfully by those students who possess developed visual cognitive skills. Paper summa-rises the system of these abilities and shows that in technical depiction the tasks of their formation and development arise in a complex way.
Kucsera P.; Béres Zs.:
Development of gauge control for hot rolling mills 21
Authors describe the controlling algorithm development of a real hot rolling mill’s automated gauge control. The mill deformation and other disturbances has to be compensated to achieve accurate thickness. The improved system was introduced into production and its operation accuracy was validated by measurements.
Magdics G.; Kiss P.:
Influencing factors of torque transmissibility in dry friction clutches 27
Dry friction clutches are a key element of today’s manual transmission equipped vehicles. Their dimensioning is often based on simplifying assumptions. Due to the deformation caused by heat, authors suppose that the uniform pressure distribution acting between the friction linings changes, which influences the transmittable torque of the clutch.
Molnárfi Z.; Simon F.; Zobory I.:
Common investigation of test specimen and holder unit for preparation of fatigue test 34
To validate the stochastic-simulation method elaborated at the Budapest University of Technology and Economy for determination of S-N (Wöhler) curves fatigue test series were planned. Fatigue test required a special specimen holder, which eliminated the undesirable bending moment during push-pull loading.
Mózes A.; Drégelyi-Kiss Á.:
Multi-response optimization of resistance projection welding process with design of experiments 38
Resistance projection welding is governed by three principal process parameters (welding current, welding time and electrode force). Instead of the load capacity of the welded joints authors select the three-response (load capacity, expulsion and deformation) optimization method.
Safranyik F.:
Applying of discrete element method for analyse efficiency of vibrating screens 44
Vibrating screens are widely used in agriculture, architecture and in almost all fields of industry. Instead of the analytical solution author suggests the discrete element method for determination of optimal working parameters, which can describe the unsteady periods of screening and higher calculation accuracy can be achieved.
Ficzere P.; Győri M.:
Transformation of dimensioning due to the appearance of 3D CAD models 5
Modern CAM systems are based on 3D CAD models to generate tool paths, therefore a traditionally prepared part drawing contains a lot of unnecessary information with regard to manufacturing. Completing a detailed 2D draw can require even more time than the designing of the given part.
Karnok D.:
Transparency in logistics networks: a reactive approach 9
In the frame of EU project of FP7 ADVANCE a new dynamic and reactive logistics system was developed. The system was tested in Great Britain by a logistics enterprise having a nationwide network. Using the new data-processing algorithms near half a million pounds were saved a year.
Kovácsné Mezei G.:
Developing visual skills in teaching technical depiction 14
Among the competences of technological professions, space perception is extremely important. Professional subjects can be done well and successfully by those students who possess developed visual cognitive skills. Paper summa-rises the system of these abilities and shows that in technical depiction the tasks of their formation and development arise in a complex way.
Kucsera P.; Béres Zs.:
Development of gauge control for hot rolling mills 21
Authors describe the controlling algorithm development of a real hot rolling mill’s automated gauge control. The mill deformation and other disturbances has to be compensated to achieve accurate thickness. The improved system was introduced into production and its operation accuracy was validated by measurements.
Magdics G.; Kiss P.:
Influencing factors of torque transmissibility in dry friction clutches 27
Dry friction clutches are a key element of today’s manual transmission equipped vehicles. Their dimensioning is often based on simplifying assumptions. Due to the deformation caused by heat, authors suppose that the uniform pressure distribution acting between the friction linings changes, which influences the transmittable torque of the clutch.
Molnárfi Z.; Simon F.; Zobory I.:
Common investigation of test specimen and holder unit for preparation of fatigue test 34
To validate the stochastic-simulation method elaborated at the Budapest University of Technology and Economy for determination of S-N (Wöhler) curves fatigue test series were planned. Fatigue test required a special specimen holder, which eliminated the undesirable bending moment during push-pull loading.
Mózes A.; Drégelyi-Kiss Á.:
Multi-response optimization of resistance projection welding process with design of experiments 38
Resistance projection welding is governed by three principal process parameters (welding current, welding time and electrode force). Instead of the load capacity of the welded joints authors select the three-response (load capacity, expulsion and deformation) optimization method.
Safranyik F.:
Applying of discrete element method for analyse efficiency of vibrating screens 44
Vibrating screens are widely used in agriculture, architecture and in almost all fields of industry. Instead of the analytical solution author suggests the discrete element method for determination of optimal working parameters, which can describe the unsteady periods of screening and higher calculation accuracy can be achieved.
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