Study on effects of cutting parameters to the chip shrinkage coefficient and surface roughness when machining aluminum alloy A6061

Abstract

In milling process, cutting parameters have an important influence on quality and
machining productivity. The phenomena occurring during the milling process are
shown on the surface of the workpiece being represented by the surface
roughness and the geometrical geometry of the forming chip. A criterion for
determining the degree of deformation of the chip is the chip shrinkage
coefficient. Chip shrinkage coefficient and surface roughness reveal the effect of
the cutting parameters during machining. This study examines the effects of the
cutting speed, the feed rate, and the uncut chip thickness on the chip shrinkage
coefficient and the surface roughness in the experimental aluminum alloy milling.
By analyzing the geometry of the chip formed when changing the cutting
parameters, the results show that the chip shrinkage coefficient, the surface
roughness and the shape morphology of chip formation are influenced by the
cutting parameters including V, S, and t. Base on the best productivity and quality
of the work, the appropriately technical parameters will be selected.