3D modelling and simulation of engraving machine obtained from repurposed 3D printer

U ovom radu opisana je izrada 3D modela uređaja za graviranje dobivenog prenamjenom 3D pisača. Model je napravljen na temelju izmjera 3D pisača Replicator 2x proizvođača MakerBot napravljenih u laboratoriju. Za prenamjenu 3D pisača u uređaj za graviranje korištena je metoda reverzibilnog inženjerstva. Reverzibilno inženjerstvo [1] je metoda inženjerstva kojom se na temelju stvarnog modela konstruira virtualni. Metoda reverzibilnog inženjerstva podrazumijeva dupliciranje postojećeg dijela, podsklopa ili proizvoda bez pripadajućih tehničkih crteža, dokumentacije ili virtualnog modela. U novi model nastoji se uključiti što više elemenata postojećeg proizvoda, kako bi se što više ubrzao proces razvoja novog proizvoda. 3D model uređaja izrađen je programu Autodesk Inventor Professional 2019. U radu je detaljno opisana izrada pojedinih dijelova uređaja, zajedno sa pripadajućim skicama i izvršenim naredbama.This paper describes the modelling of engraving machine obtained from repurposed 3D printer. The model was made based on measurements of 3D printer Replicator 2x from MakerBot made in laboratory. Repurposing of 3D printer was done by the method of reverse engineering. Reverse engineering [1] is a method of engineering that constructs a virtual model based on actual model. The reverse engineering method involves duplicating an existing part, subassembly or product without techincal drawings, documentation or virtual model. The new model is meant to include as many elements of the existing product as possible, in order to speed up the process of developing a new product as much as possible. The 3D model was made in Autodesk Inventor Professional 2019. The paper describes in detail the construction of some individual parts of the device, along with correspoding sketches with executed commands