Papers by Keyword: Chip Geometry

Abstract: During the process of high-efficiency cutting Ti6Al4V the material presents serrated chips. Periodic high-frequency serrated ship will cause fluctuations in the cutting force, which then affect the tool wear and surface integrity of workpiece and so on. On the basis of experiment of turning Ti6Al4V, the frequency and the geometric characteristics of serrated chip has been analyzed through observing the microstructure of chip using optical microscope and SEM. The results show that cutting speed and feed rate have great influence on the frequency and the geometric characteristics of serrated chip. Involving low-speed, large feed and large cutting depth can reduce the generated frequency of serrated chip.

Abstract: In this paper, the micro-scale machining characteristics of a non-ferrous structural alloy, aluminum 7050-T7451 is investigated through a series of cutting experiments. The effects of cutting speed and undeformed chip thickness on the chip geometry, cutting ratio, effective rake angle and shear angle in orthogonal micro-scale cutting of Al 7075-T7451 are presented. Explanations for the observed trends are also given.

Abstract: Frequently, to validate FEM simulations of the cutting process it is compared the predicted results with the experimental cutting forces. In addition, other parameters are measured and it is possible to predict the chip geometry in some particular conditions. This paper presents a new development of the photogrammetry and its applications in the study of the chip geometry. In the orthogonal milling case, it is possible to obtain a 3D model of the deformed chip employing photogrammetry digitization techniques.