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Cutting tool design
Source publication
The present paper consists in a comparison of vibrations measured during face milling cutting with two constructive variants of milling cutters (one with classic insert clamping and other with a quick insert adjustment mechanism). The goal of the study is to determine if the new clamping mechanism of the inserts has a similar behaviour with the cla...
Contexts in source publication
Context 1
... this end we constructed a combined face milling tool with four inserts, two diametrically opposed, with classic clamping of the insert with central screw and another two with the new mechanism for insert clamping. The geometry of the tool is presented in figure 1. The experiments were conducted by milling successively with the two kinds of insert clamping. ...
Context 2
... observed that the displacement values are comparable and very close to each other, thus the new insert clamping has a similar behaviour regarding vibrations for all cutting trials. for experiment no.1, a -classic clamping b -new clamping For the comparative spectral analyses we observed that around 250Hz and 650Hz, in both cases there are maximum peaks which suggests that around these values the systems start to resonate. The results are presented in figures 8, 9, 10 and 11. ...
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Citations
The article presents the results and process analysis of the face milling of aluminium alloy 2017A with the CoroMill 490 tool on an AVIA VMC 800 vertical milling centre. The study analysed the effects of the cutting speed, the feed rate, the actual number of teeth involved in the process, the minimum thickness of the cut layer (hmin), and the relative displacement in the tool-workpiece system D(ξ) on the surface roughness parameter Ra. To measure relative displacement, an original bench was used with an XL-80 laser interferometer. The analysis of relative displacement and surface roughness allowed these factors to be correlated with each other. The purpose of this article is to determine the stable operating ranges of the CoroMill 490-050Q22-08M milling head with respect to the value of the generated relative displacement w during the face-milling process and to determine its influence on surface roughness. The research methodology presented in this paper and the cutting tests carried out allowed the determination of the optimum operating parameters of the CoroMill 490-050Q22-08M tool during the face milling of aluminium alloy 2017A, which are vc 300 m/m and fz—0.14 mm/tooth. Working with the defined cutting parameters allows all the cutting inserts in the tool body to be involved in shaping the geometrical structure of the surface, while maintaining a low vibration level D(ξ) > 1 µm, a low value of the parameter hmin > 1.5 µm, and the desired value of the parameter Ra > 0.2 µm
