info:eu-repo/semantics/article
Selective polishing method to increase precision in large format lightweight machine tools working with petrous material
Fecha
2019-01-01Registro en:
01206230
24222844
WOS;000461817600008
SCOPUS;2-s2.0-85071377439
10.17533/udea.redin.n90a08
Autor
Arango-Lopez, ID
Copete-Murillo, LOD
Arango-Lopez, ID
Copete-Murillo, LOD
Institución
Resumen
In this article two complementary methods are developed. Firstly, a method to add precision in large machine tools with modular lightweight structures (APLM), which performs the compensation of geometrics and dynamics errors using embedded intelligence, and secondly, an alternative polishing method called selective polishing (SP). This systematic process comprehends measurement tools and algorithm resources. Phenomena occurred in the machine structure, due to interaction between the cutting tools and the petrous materials in the grinding and polishing processes are modeled mathematically. Using validated flatness models, the variables and parameters were discretized to determine the errors with respect to the Z axis. To validate the method, a test machine of 3m(2) workspace with a multi-body lightweight structure design was built. The geometrical errors were determined using precision instruments and those were compared with a pattern surface. A higher flatness is achieved through a combined grinding-traditional polishing and selective polishing process using the same machine. This method saves time and energy consumption.