THE INFLUENCE OF SOME CUTTING PARAMETERS ON THE DIMENSIONAL ACCURACY OF THE HEMISPHERICAL SURFACE WHEN 3 AXES-CNC MILLING

  • Bùi Ngọc Tuyên
  • Trần Thị Yên
Keywords: Hemispherical surface, 3 axes CNC milling, cutting speed, feed rate; side step, dimensional accuracy

Abstract

Hemispherical surface is one of the comon geometrical features that is used
in designing tools, paterns,… In oder to exactly machine the surfaces, we must
use multi axes CNC milling (3 axes, at least). The paper presents a study of the
influence of cutting parameters (cutting speed, feed rate; side step) on the
dimensional accuracy of the hemispherical surface when 3 axes CNC milling by
ball endmill. Based on the general full factorial design of experiments with using
Minitab software, the authors have established an experimental regression
model of the relation between deviations of diameter of the hemispherical
surfaces and cutting parameters including cutting speed, feed rate, side step
when 3 axes CNC milling speciments made by 6061 aluminum alloy. The study
has defined the level of impact of the cutting parameters and their interactions
to the machining accuracy as well as predicted the deviation of hemispherical
surfaces when machining them under the experimental conditions

điểm /   đánh giá
Published
2020-11-12
Section
RESEARCH AND DEVELOPMENT