Dimenzioniranje i 3D oblikovanje povratne zaklopke s polugom i utegom

This article presents the dimensioning and 3D modeling of a swing check valve with lever and weight in welded design, based on the existing 2D workshop documentation in cast design and reverse engineering. Based on analytical calculations, pipe wall thickness of a swing check valve housing was selected for the nominal pipe diameter DN 300 and water test pressure p = 2.4 MPa. All 3D models of components, as well as the assembly, were made in the program tool SolidWorks. The 3D model of the swing check valve with flanges was subjected to stress analysis (Finite Element Analysis) for the purpose of checking the accuracy of the analytical calculations. Fluid flow analysis (Flow Simulation) was used for presenting fluid flow process and rate through the swing check valve assembly. A low-budget 3D MakerBot Replicator 2X printer was used for constructing a reduced-scale 3D assembly model of the swing check valve with lever and weight, by implementing the FDM (Fused Deposition Modeling) technology.Prikazano je dimenzioniranje i 3D oblikovanje povratne zaklopke s polugom i utegom u zavarenoj izvedbi na temelju postojeće 2D radioničke dokumentacije u lijevanoj izvedbi i reverznog inženjeringa. Na temelju analitičkog proračuna odabrana je debljina stjenke cijevi kućišta povratne zaklopke za nazivni promjer cijevi DN 300 i vodni ispitni tlak p = 2,4 MPa. Svi 3D modeli dijelova, kao i sklop, izrađeni su u programskom alatu SolidWorks. Na 3D modelu kućišta povratne zaklopke s prirubnicama u zavarenoj izvedbi provedena je analiza naprezanja (Finite Element Analysis) sa svrhom provjere točnosti analitičkog proračuna. Analizom strujanja fluida (Flow Simulation) prikazan je tijek i brzine strujanja fluida kroz sklop povratne zaklopke. Na niskobudžetnom 3D MakerBot Replicator 2X pisaču, primjenom FDM tehnologije taložnog očvršćivanja materijala, izrađen je umanjeni 3D model sklopa povratne zaklopke s polugom i utegom

Studentski poduzetničko-tehnološki inkubator u Bjelovaru

According to the Statute of the Technical College in Bjelovar [1], one of the institution’s activities is to promote new technologies, innovations and entrepreneurship. With the aim to foster development of entrepreneurial skills and innovativeness of students, Technical College in Bjelovar has founded the Student Entrepreneurial-technological Incubator Bjelovar (hereinafter: student incubator).Prema Statutu Visoke tehničke škole u Bjelovaru [1], jedna od djelatnosti ustanove je promicanje novih tehnologija, inovacija i poduzetništva. S ciljem poticanja razvoja poduzetničkih vještina i inovativnosti studenata, Visoka tehnička škola u Bjelovaru osnovala je Studentski poduzetničko-tehnološki inkubator Bjelovar (u nastavku: Studentski inkubator)

3D oblikovanje i proračun kućišta vijčane pumpe

Shown is the 3D design and calculation of a three-spindle screw pump housing based on existing 2D workshop documentation of a cast version of the housing construction. A control calculation of the thickness of the wall of the housing of the three-spindle screw pump has been made for materials SL–25, NL–42, AlSiMg and test pressure of 1,5 MPa (15 bars). Each 3D model of positions, assemblies and generated 2D workshop documentation are made in the software tool SolidWorks with advanced techniques of 3D modelling. In the software module SolidWorks Simulation stress analysis of the housing of a three-spindle screw pump was performed, that is, Finite Element Analysis – FEA for materials SL–25 , NL–42 and AlSiMg, that confirmed the accuracy of the calculations made, and the analysis of the fluid flow of the 3D model of the assembly of the three-spindle screw pump. With help of the 3D printer MakerBot Replicator 2X with application of FDM technology of sedimentary hardening of materials, a miniature 3D model of the assembly of the three-spindle screw pump was created. The practical application of the improvement and development of screw pumps is emphasized.Prikazano je 3D oblikovanje i proračun kućišta trovretene vijčane pumpe na temelju postojeće 2D radioničke dokumentacije u lijevanoj izvedbi. Izrađen je kontrolni proračun debljine stjenke kućišta trovretene vijčane pumpe za materijale SL–25, NL–42, AlSiMg i ispitni tlak 1,5 MPa (15 bara). Svi 3D modeli pozicija, sklop i ˝generirana˝ 2D radionička dokumentacija izrađeni su u programskom alatu SolidWorks naprednim tehnikama 3D oblikovanja. U programskom modulu Solidworks Simulation provedene su analize naprezanja kućišta trovretene vijčane pumpe Finite Element Analysis – FEA za materijale: SL–25 , NL–42 i AlSiMg koje su potvrdile točnost provedenog kontrolnog proračuna, te analiza toka strujanja fluida u 3 modelu sklopa trovretene vijčane pumpe. Pomoću 3D pisača MakerBot Replicator 2X primjenom FDM tehnologije taložnog očvršćivanja materijala izrađen je umanjeni 3D model sklopa trovretene vijčane pumpe. Istaknuta je praktična primjenjivost unapređenja i razvoja vijčanih pumpi

3D oblikovanje i proračun kućišta vijčane pumpe

Shown is the 3D design and calculation of a three-spindle screw pump housing based on existing 2D workshop documentation of a cast version of the housing construction. A control calculation of the thickness of the wall of the housing of the three-spindle screw pump has been made for materials SL–25, NL–42, AlSiMg and test pressure of 1,5 MPa (15 bars). Each 3D model of positions, assemblies and generated 2D workshop documentation are made in the software tool SolidWorks with advanced techniques of 3D modelling. In the software module SolidWorks Simulation stress analysis of the housing of a three-spindle screw pump was performed, that is, Finite Element Analysis – FEA for materials SL–25 , NL–42 and AlSiMg, that confirmed the accuracy of the calculations made, and the analysis of the fluid flow of the 3D model of the assembly of the three-spindle screw pump. With help of the 3D printer MakerBot Replicator 2X with application of FDM technology of sedimentary hardening of materials, a miniature 3D model of the assembly of the three-spindle screw pump was created. The practical application of the improvement and development of screw pumps is emphasized.Prikazano je 3D oblikovanje i proračun kućišta trovretene vijčane pumpe na temelju postojeće 2D radioničke dokumentacije u lijevanoj izvedbi. Izrađen je kontrolni proračun debljine stjenke kućišta trovretene vijčane pumpe za materijale SL–25, NL–42, AlSiMg i ispitni tlak 1,5 MPa (15 bara). Svi 3D modeli pozicija, sklop i ˝generirana˝ 2D radionička dokumentacija izrađeni su u programskom alatu SolidWorks naprednim tehnikama 3D oblikovanja. U programskom modulu Solidworks Simulation provedene su analize naprezanja kućišta trovretene vijčane pumpe Finite Element Analysis – FEA za materijale: SL–25 , NL–42 i AlSiMg koje su potvrdile točnost provedenog kontrolnog proračuna, te analiza toka strujanja fluida u 3 modelu sklopa trovretene vijčane pumpe. Pomoću 3D pisača MakerBot Replicator 2X primjenom FDM tehnologije taložnog očvršćivanja materijala izrađen je umanjeni 3D model sklopa trovretene vijčane pumpe. Istaknuta je praktična primjenjivost unapređenja i razvoja vijčanih pumpi

CAD/CAM system customizing for 2.5D and 3D milling on Haas VF6 4-axis CNC milling machine

U ovom radu opisana je problematika konstruiranja složenog kalupa, pomoću programskog alata SolidWorks. Za konstruiranje kalupa korišteni su programski moduli Surface i Mold, pomoću kojih se izradio zahtjevni 3D model žlice (programski modul Surface), te s obzirom na nju konstruirani su matrica i žig (programski modul Mold). Nakon 3D modeliranja kalupa, izrađena je simulacija 3D obrade glodanja u programskom modulu SolidCAM, gdje je nakon definiranja obrade generiran G-kod za stroj Haas VF-6 na kojemu je sam kalup i izrađen.In this thesis we work on modelling a complex mold, with the help of SolidWorks software. For constructing this mold, moduls of Surface and Mold were used for making the spoon (Surface) and then, based on the spoon, mark and countermark (Mold) where made. After modelling a mold in 3D, 3D milling simulation was made in the SolidCAM module, where a G-code of milling for the Haas VF-6 was generated and a mold was made

CAD/CAM system customizing for 2.5D and 3D milling on Haas VF6 4-axis CNC milling machine

U ovom radu opisana je problematika konstruiranja složenog kalupa, pomoću programskog alata SolidWorks. Za konstruiranje kalupa korišteni su programski moduli Surface i Mold, pomoću kojih se izradio zahtjevni 3D model žlice (programski modul Surface) te s obzirom na nju konstruirani su matrica i žig (programski modul Mold). Nakon 3D modeliranja kalupa, izrađena je simulacija 3D obrade glodanja u programskom modulu SolidCAM, gdje je nakon definiranja obrade generiran G-kod za stroj Haas VF-6 na kojemu je sam kalup i izrađen.In this thesis we work on modeling an complex mold, with a help of software SolidWorks. For constructing this mold, moduls of Surface and Mold were used, for making of spoon (Surface), and then based on spoon it was made mark and countermark (Mold). After 3D modeling of a mold, it was made 3D milling simulation in modul of SolidCAM, where was generated G-code of milling for a machine Haas VF-6, where a mold was made