University of Slavonski Brod, Faculty of Mechanical Engineering
Abstract
Najnoviji napredak u robotici čini robote pogodne za različite potrebe. Osim manipulativnih i instalacijskih aplikacija, koje su najčešće za robotske manipulatore, može se obavljati i glodanje. U bliskoj budućnosti robotski manipulatori s integriranim vretenom, pravilnim reznim alatom i pravilno odabranima parametrima glodanja, mogli bi zamijeniti konvencionalne CNC strojeve kod srednjih tolerantnih strojnih obrada, pogotovo kod upotrebe mekanih materijala krajnjih proizvoda. U principu, trajanje alata i trošenje tijekom glodanja s robotima nije dostupno ili istraživano. Stoga, ovaj rad predstavlja analizu HSS trošenja alata tijekom obrade MDF (ploče srednje gustoće) materijala s antropomorfnim robotom. Težište je na međuodnosu trošenja alata i položaja izratka u području rada robota. Za tu analizu, ispitivanja su provedena u četiri različita položaja prema udaljenosti između baze robota i ispitivanog položaja glodanja. Rezultati pokazuju da porast udaljenosti značajno utječe na trošenje alata, zbog vibracija, što pokazuje sasvim drugačije ponašanje od krutih konvencionalnih CNC strojeva.Recent progress in robotics makes robots suitable for many different applications. Beside manipulative and installation applications, which are the most common for robot manipulator, milling can be performed as well. In the near future, robot manipulators, integrated with spindle, proper cutting tool and milling parameters could replace conventional CNC middle toleranced machining, especially for soft material end products. In general, tool life behaviour in milling with robots is not available or studied. Therefore, this work presents the analysis of HSS tool wear in milling MDF (medium density fibreboard) with an anthropomorphic robot. The focus is on the correlation of the tool wear and the workpiece position in the robot operation area. To analyse this, tests were performed in four different positions according to the distance between robot base and test milling position. Results show that increasing distance significantly affects tool wear, on account of vibrations, what shows completely different behaviour than stiff conventional CNC machine tools
