Uticaj rezolucije ravanskog paralelnog mehanizma na tačnost kompleksne mašine alatke za proces obrade sečenja žicom

Abstract

U okviru ovoga rada je predstavljena kompleksna višeosna mašina alatka koja je namenjena za proces obrade sečenja žicom. Kompleksnu mašinu alatku čine dva dvoosna rekonfigurabilna paralelna mehanizma spojenih žicom koja u ovom slučaju predstavlja alat same mašine. Rezolucija paralelnih mehanizama nije konstantna unutar celog radnog prostora pa i greške pozicionoranja platforme imaju različite vrednosti u različitim delovima radnog prostora. Ove greške se odražavaju na greške obrade kompleksne višeosne mašine a u ovom radu je prikazana analiza koja dovodi u vezu greške pozicioniranja platformi paralelnih mehanizama sa greškama obrade. Takođe, razmotra se i mogućnost umanjenja greške obrade rekonfigurisanjem paralelnih mehanizama od kojih je napravljena kompleksna višeosna mašina namenjena za proces obrade sečenja žicom.

Within this paper, a complex multi - axis machine tool is presented, which is intended for the wire cutting processing. The complex machine tool consists of two two-axis reconfigurable parallel mechanisms connected by a wire, which in this case represents the tool of the machine itself. The resolution of parallel mechanisms is not constant within the entire workspace, so the positioning errors of the platform have different values in different parts of the workspace. These errors are reflected in the machining process errors of a complex multi-axis machine, and in this paper an analysis is presented that connects the positioning errors of the platforms of parallel mechanisms with the processing errors. Also, the possibility of reducing the machining error by reconfiguring the parallel mechanisms from which the complex multi-axis machine intended for the wire cutting processing is made is considered.