Comparison of Milling Strategies in the Production of Shaped Surfaces

Varga, Ján; Spišák, Emil; Gajdoš, Ivan; Mulidrán, Peter

doi:10.12913/22998624/156817

Cited by 8 publications

(10 citation statements)

References 11 publications

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“…Varga [24] also used the contact method to evaluate the surface roughness of a complex, shaped surface containing concave and convex parts during 3-axis milling, where the Constant Z strategy achieved the best roughness values out of the milling strategies investigated. In his research, he compared the milling strategies of Linear, Linear 90 • , Constant Z, Spiral, and Radial milling.…”

Section: Introductionmentioning

confidence: 99%

Influence of Tool Inclination and Effective Cutting Speed on Roughness Parameters of Machined Shaped Surfaces

Varga,

Demko,

Kaščák

et al. 2024

Machines

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Free-form surfaces in the automotive or aviation industry where the future shape of the product will contain complex surfaces raises the question of how to achieve the necessary shape of the required quality in the milling process. One of the methods of their production is the use of 5-axis milling, in which it is necessary to consider not only the input data of the process itself, but also the methodology for evaluating the desired results. Correctly answered questions can thus facilitate the choice of the inclination of the tool when machining parts of the surfaces defined in the experiment. The primary goal of the paper was to monitor the influence of tool inclination on the quality of the machined surface and effective cutting speed by evaluating surface roughness and surface topography. The experiment was designed to show the effect of different tool positions while the feed per tooth fz for the finishing operation remained constant. The best result in terms of surface quality was achieved with a tool inclination of 15° in the cutting process. The most unfavorable result was obtained with a tool axis inclination of zero degrees due to unfavorable cutting conditions.

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Section: Introductionmentioning

confidence: 99%

Influence of Tool Inclination and Effective Cutting Speed on Roughness Parameters of Machined Shaped Surfaces

Varga,

Demko,

Kaščák

et al. 2024

Machines

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“…Each part must be manufactured to meet the recommended quality and dimensions, so the requirement for the correct selection of milling strategy is justified. To support this requirement, it is necessary to know the effectiveness and influence of strategies in milling free-form shapes [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…The relationship between machined surface quality and interpolation line was addressed by Zhang et al [57], who developed a mathematical model of surface topography when milling shaped surfaces. In his study [58], Varga analyzed milling strategies with respect to the machined surface, where they applied the so-called fragmentation of relief surfaces.…”

Section: Introductionmentioning

confidence: 99%

Surface Quality Evaluation in the Milling Process Using a Ball Nose End Mill

Varga,

Ižol,

Vrabeľ

et al. 2023

Applied Sciences

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Shaped surfaces are increasingly used in the field of mold-making for casting or injection molding, where future products include shapes with different curvatures. These are surfaces that form convex curves, concave curves, or a combination thereof. Given these machined surfaces, it is important to know the impact of the finishing strategies on these surfaces. This paper deals with the comparison of finishing milling strategies in the production of shaped surfaces and the analysis of different methods for the evaluation of surface topography. In addition, the experimental results evaluate the roughness of the machined surface and surface shape variations. The material used for the experiments was AlCu4Mg aluminum alloy, and Constant Z, spiral and spiral circle strategies were chosen for the finishing strategies. The evaluation of surface topography and surface roughness was carried out at three different specimen heights with respect to the tool’s contact with the machined surface.

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“…Therefore, the importance of selecting the milling strategy intended for finishing is justified and it is necessary to know which of the strategies is appropriate to use for finishing a given surface. In the case of the production of the abovementioned surfaces, not only the selection of the appropriate strategy but also the contact point of the tool with the workpiece plays an equally very important role, as it changes during the production process with respect to the machined area and thus influenced, in particular, the roughness and topography of the surface [7]. The most commonly used milling strategies include zig-zag, offset, spiral, radial, constant Z and others.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Finishing Milling Strategies Using Topography of the Machined Surface

Varga

Ižol²,

Kaščák³

et al. 2023

Acta Metall Slovaca

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The plastics processing and injection molding industry is known for the fact that the future molded part contains a variety of geometric shapes and, in some cases, free surfaces. To produce these shapes, knowledge of CAM systems is required to enable the programmer to select the necessary milling strategies designed to achieve the best possible quality and dimensional accuracy. However, it is equally necessary to understand and appreciate the effect of each strategy and which strategy is best suited for a given type of surface. The paper compares finishing milling strategies by evaluating the topography of the machined surface. The material was AlCu4Mg aluminium alloy, where Constant-Z and Spiral strategy – circle-type finishing strategies were selected for the production process. Surface topography analysis was evaluated and compared at three different heights of the produced part with respect to the tool contact with the machined surface, which showed a variation in toolpaths and therefore also in the quality of machining. The surface topography results demonstrated the Constant Z strategy to be the more suitable strategy for producing the shaped surface, which achieved uniform toolpaths over the whole height of the part.

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Comparison of Milling Strategies in the Production of Shaped Surfaces

Cited by 8 publications

References 11 publications

Influence of Tool Inclination and Effective Cutting Speed on Roughness Parameters of Machined Shaped Surfaces

Influence of Tool Inclination and Effective Cutting Speed on Roughness Parameters of Machined Shaped Surfaces

Surface Quality Evaluation in the Milling Process Using a Ball Nose End Mill

Comparison of Finishing Milling Strategies Using Topography of the Machined Surface

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