High- performance manufacturing with trochoidal milling strategies

Abstract

Along with technological progress, manufacturing processes have been constantly innovated, hoping to reduce manufacturing time, extend the useful life of tools and offer high quality finishes of the product, however, information on the product is scarce. Machined in 7075 - T6 aluminum, which, due to its mechanical properties, is more used for the manufacture of molds and dies than other materials. In this project, a high-performance machining is studied, improving cycle times by comparing trochoidal and conventional milling roughing strategies, without the use of coolants that can contaminate the chip allowing the recycling of material, these strategies are found in a large part of CAM software. The experimentation was carried out in a Hision CFV 1100 vertical machining center with Fanuc Oi MF control, supported by the Taguchi L18 methodology for the milling parameters and roughing strategy. 9 tests were carried out for each strategy with a 25 mm flat cutting tool with 4 high speed steel (HSS) lips based on the 3 levels of the milling parameters, in the range of 800 m / min to 1000 m / min, with a feed per tooth of 0.25 to 0.35 mm / tooth. The results obtained for both time and temperature have a behavior described by Mr. Salomón for high-speed machining (HSM), an ANOVA statistical analysis was carried out that determined that the trochoidal machining strategy presents a reduction in the 93.27% compared to the conventional machining strategy and a stable temperature of 25ºC in the cutting tool.